Electrically controllable optical component comprising an array of cells

An electrically controllable optical component (10) comprises a transparent array of cells (3) and two transparent electrodes (5a, 5b) which are parallel and lying opposite each other on either side of the array of cells. Certain of the cells located between the two electrodes contain different electroactive materials, so that said cells exhibit different respective variations in at least one optical quantity in response to an electrical signal applied to the electrodes. An optical function is thus temporarily conferred on the component, resulting from gradients in the optical quantity that are formed parallel to the surface of the component.

Electrochromic single and two-core viologens and optical articles containing them

The present invention relates to a group of novel electrochromic materials. More specifically, it relates to electrochromic materials based on either single or two-core viologen systems and the use of these viologen systems as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.

Methods and systems for augmented reality

A method and system for image display with a head-mounted device, which use a see-through tunable diffractive mirror, such as a see-through tunable holographic mirror or see-through tunable LCD array mirror, which mirror is useful in providing augmented reality.

Ophthalmic device comprising an electrochromic cell

The invention relates to an ophthalmic device (1) which includes an electrochromic cell (3) comprising at least two transparent layers (4, 5) having curved inner surfaces (4a, 5a) and defining therebetween a closed recess (6) filled with an electrochromic composition (7), the recess (6) being defined peripherally by a sealing gasket (11) made from an adhesive material (20), the sealing gasket (11) being suitable for keeping the two transparent layers (4, 5) assembled together.

Producing a transparent optical element comprising a substance contained in cells

The invention concerns a method for producing a transparent optical element (1) including filling cells (10) of the element with a substance having an optical property. It consists in moving an amount of the substance (20) radially on the cells, towards a peripheral edge of the optical element, such that the substance penetrates each cell. Optionally, the cells may be sealed with a film (30) fixed on the partition walls (11) of the cells. The filling and the sealing of the cells may be carried out in a single step of the process.

ELECTRICALLY CONTROLLABLE OPTICAL COMPONENT COMPRISING AN ARRAY OF CELLS

An electrically controllable optical component (10) comprises a transparent array of cells (3) and two transparent electrodes (5a, 5b) which are parallel and lying opposite each other on either side of the array of cells. Certain of the cells located between the two electrodes contain different electroactive materials, so that said cells exhibit different respective variations in at least one optical quantity in response to an electrical signal applied to the electrodes. An optical function is thus temporarily conferred on the component, resulting from gradients in the optical quantity that are formed parallel to the surface of the component.

Management system and method of an active lens

The invention relates to the field of management of an active lens and more particularly to a management system comprising an active lens (1), a first sensor (2) arranged to measure data relating to an incident light on the active lens, a control unit (4) designed for controlling the active lens according to data measured by the first sensor, wherein the management system further comprises a second sensor (3) arranged to measure data relating to a light transmitted from the incident light through the active lens, the control unit being further designed to adjust, according to said data measured by the second sensor, the control already performed according to said data measured by the first sensor. Thus the management system allows taking into account data relating to the light passing through the active lens as a feedback in order to finely control the active lens.

Composition comprising photochromic dyes in an ionic solvent

A photochromic composition that is liquid at 20° C. and includes (a) at least one photochromic dye and (b) an ionic solvent selected from (b)(i) room-temperature ionic liquids (RTIL), (b)(ii) ionic liquid mixtures that are liquid at room temperature, and (b)(iii) room-temperature liquid mixtures of at least one ionic liquid and at least one organic solvent that is miscible therewith. The use of said photochromic composition in optical devices such as ophthalmic lenses is also described.

Ophthalmic device with improved amplitude variation cell

The invention relates to an ophthalmic device including an electrically controllable amplitude variation cell, in particular an electrochromic transmission variation cell. More particularly, the cell (3) comprises a main convex surface on the front. This arrangement makes it possible for the cell to process a lateral luminous flux (RP), unlike cells in the prior art (1AA).

ELECTROCHROMIC SINGLE AND TWO-CORE VIOLOGENS AND OPTICAL ARTICLES CONTAINING THEM

The present invention relates to a group of novel electrochromic materials. More specifically, it relates to electrochromic materials based on either single or two-core viologen systems and the use of these viologen systems as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens. 118.-. (canceled)21. The compound according to claim 19 , wherein R claim 19 , R claim 19 , Rand Rare each independently selected from C-Calkyl claim 19 , C-Calkoxycarbonyl claim 19 , alkanoyl claim 19 , aroyl claim 19 , aryl and heteroaryl claim 19 , wherein the aryl and heteroaryl may be substituted by one or more substituents selected from C-Calkyl and C-Chaloalkyl claim 19 , preferably claim 19 , R claim 19 , R claim 19 , Rand Rare each independently selected from methyl claim 19 , ethoxycarbonyl claim 19 , phenyl claim 19 , p-methylphenyl and p-trifluoromethylphenyl.22. The compound according to claim 19 , wherein the counterion X is selected from halide claim 19 , tetrafluoroborate claim 19 , tetraphenylborate claim 19 , hexafluorophosphate claim 19 , nitrate claim 19 , methanesulfonate claim 19 , trifluoromethane sulfonate claim 19 , toluene sulfonate claim 19 , hexachloroantimonate claim 19 , bis(trifluoromethanesulfonyl)imide claim 19 , perchlorate claim 19 , acetate and sulfate.23. The compound according to claim 19 , wherein R claim 19 , R claim 19 , R claim 19 , Rand Rare each independently selected from H claim 19 , cyano claim 19 , halogen claim 19 , nitro claim 19 , hydroxyl claim 19 , alkyl claim 19 , preferably C-Calkyl claim 19 , haloalkyl claim 19 , alkoxy claim 19 , haloalkoxy claim 19 , alkoxycarbonyl claim 19 , cycloalkyl claim 19 , allyl claim 19 , aryl and heteroaryl.24. The compound according to claim 19 , wherein Re is H and at least one of R claim 19 , R claim 19 , Rand Ris not H claim 19 , preferably at least one of Rand Ris not H.26. An electrochromic composition comprising at least one compound as defined in .27. ...

METHOD FOR PRODUCING AN ANTI-UV PLASTIC FILM WITH NON-UNIFORM SPATIAL DISTRIBUTION OF THE UV ABSORBER AND PHOTOCHROMIC OPTICAL ELEMENTS COVERED WITH SUCH A PLASTIC FILM

Method for producing a plastic film containing a compound absorbing ultraviolet radiation comprising (a) depositing an alcoholic solution of polyvinyl butyral on a transparent plastic support film, (b) evaporating the solvent from the alcoholic solution of polyvinyl butyral so as to form a polyvinyl butyral layer on the transparent support film, (c) printing the polyvinyl butyral layer with an ink absorbing ultraviolet radiation (UV absorber) in a pattern, (d) heating the transparent plastic support film, coated with the printed polyvinyl butyral layer so as to enable at least part of the UV absorber to pass from the polyvinyl butyral layer to the plastic support film, (e) removing the polyvinyl butyral layer, preferably by washing with a suitable solvent. The application also relates to the film obtained by this method and the use of this film for producing a photochromic element with a spatially non-uniform behaviour. 114-. (canceled)15. Method for producing a plastic film containing a compound absorbing ultraviolet radiation , comprising(a) depositing an alcoholic solution of polyvinyl butyral on a transparent support film made of plastic(b) evaporating the solvent from the alcoholic solution of polyvinyl butyral so as to form a polyvinyl butyral layer on the transparent support film,(c) printing the polyvinyl butyral layer with an ink containing a compound absorbing ultraviolet radiation (UV absorber) in a pattern,(d) heating the transparent plastic support film, coated with the printed polyvinyl butyral layer to a temperature and for a time sufficient to enable at least part of the UV absorber to pass from the polyvinyl butyral layer to the plastic support film,(e) removing the polyvinyl butyral layer, preferably by washing with a suitable solvent.16. Method according to claim 15 , wherein the polyvinyl butyral solution is not deposited directly on the plastic support but on an intermediate layer containing a water soluble polymer claim 15 , previously ...

COMPOSITION COMPRISING PHOTOCHROMIC DYES IN AN IONIC SOLVENT

A photochromic composition that is liquid at 20° C. and includes (a) at least one photochromic dye and (b) an ionic solvent selected from (b)(i) room-temperature ionic liquids (RTIL), (b)(ii) ionic liquid mixtures that are liquid at room temperature, and (b)(iii) room-temperature liquid mixtures of at least one ionic liquid and at least one organic solvent that is miscible therewith. The use of said photochromic composition in optical devices such as ophthalmic lenses is also described.

Active optical filter for spectacle lenses

Active optical filter adapted for a spectacle lens, the active optical filter being configured so as to filter light radiations over at least one predetermined range of wavelengths, wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.

Spectacle lens comprising an activable optical filter

A spectacle lens including an activable optical filter, the activable optical filter being configured to be actively switched between at least three configurations, wherein in the first configuration, the color perception of the spectacle wearer is unaltered, in the second configuration the activable optical filter provides a specific filtering function, in the third configuration vision of the spectacle wearer is protected against glare.

Ophthalmic device comprising an ophthalmic spectacle lens and a plurality of electronic components

An ophthalmic spectacle lens and a plurality of electronic components arranged in a form of at least one strip in contact with and along the periphery of the ophthalmic lens. An ophthalmic apparatus includes at least one frame and at least one ophthalmic device.

Electrochromic composition

The present invention relates to an electrochromic composition comprising at least one reducing compound, at least one oxidizing compound which is selected from specific viologen derivatives, and at least one dye. Said composition can be used as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.

TRANSPARENT ELECTROCHROMIC SYSTEMS WITH A PLURALITY OF POLARISATION ELECTRODES

The invention relates to transparent electrochromic systems which each include one pair of supply electrodes and at least one pair of polarisation electrodes. The polarisation electrodes prevent a reaction of mutual neutralisation of the electroactive substances of the systems from causing unnecessary consumption of electric current. Said electrodes also prevent a neutralisation reaction from limiting a lower value of light transmission of the systems. For this purpose, the polarisation electrodes produce an electric field inside the systems, which attracts the electroactive substances that have already reacted with the supply electrodes to different areas.

Active optical filter for spectacle lenses

An active optical filter adapted for a spectacle lens, the active optical filter configured to filter light radiations over at least one predetermined range of wavelengths, wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.

Electrochromic compounds and optical articles containing them

Electrochromic compounds and optical articles containing them The present invention relates to a group of novel electrochromic compounds. More specifically, it relates to electrochromic compounds comprising one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.

TRANSPARENT ELECTROCHROMIC SYSTEM WITH A PLURALITY OF PAIRS OF SUPPLY ELECTRODES

The invention relates to a transparent electrochromic system () which includes two pairs of transparent supply electrodes (-), which are intended for being electrically connected to variable power sources (). The electrodes of the two pairs are supported by separate outer walls () of the system, on either side of a closed volume which contains electroactive substances. The electrochromic system has superior dynamics and switching rate. Various embodiments of the invention correspond to various modes for connecting the electrodes to the power sources, and to various partitions of the closed volume into separate cells (). 1. A transparent electrochromic system , providing a clear vision through said system , and comprising:first and second outer walls defining a closed volume, the system being transparent for a direction of gaze passing through the outer walls and said closed volume between two opposite sides;a liquid or gel contained in the closed volume;first and second electroactive substances distributed in the liquid or gel, with respective oxidation-reduction potential values that are different, at least some of the first and second electroactive substances having an optical effect that varies between an oxidized form and a reduced form of said substances;a first pair of transparent supply electrodes, together supported by the first outer wall, and configured to be connected respectively to two output terminals of a first variable electrical source for supplying the system with electric current, so as to transfer electrons to or from at least some of the electroactive substances, in a reverse mode between said first and second electroactive substances at a same moment of operation of the system; anda second pair of transparent supply electrodes, separate from the electrodes of the first pair, the electrodes of the second pair being together supported by the second outer wall, the supply electrodes of the second pair being configured to be connected respectively ...

Optical element comprising cells sealed by means of a layer of adhesive material

An optical element comprises a base component (1) provided with a set of cells (10) open on a face of the component and a film (2) for sealing the cells. The film is adhesively bonded to ends (12) of separation walls (11) present between the cells. The adhesive bonding is carried out by applying a pressure adjusted so that the ends of the walls penetrate into a layer of adhesive material (3) positioned between the film and the set of cells. A refractive index value of the adhesive material is adjusted with respect to a value of the same index for the material of the ends of the walls m order to obtain an optical element which exhibits a high transparency.

Transparent electrochromic system with a plurality of pairs of supply electrodes

The invention relates to a transparent electrochromic system (100) which includes two pairs of transparent supply electrodes (1-4), which are intended for being electrically connected to variable power sources (20, 21). The electrodes of the two pairs are supported by separate outer walls (10, 11) of the system, on either side of a closed volume which contains electroactive substances. The electrochromic system has superior dynamics and switching rate. Various embodiments of the invention correspond to various modes for connecting the electrodes to the power sources, and to various partitions of the closed volume into separate cells (13).

Method for producing an anti-UV plastic film with non-uniform spatial distribution of the UV absorber and photochromic optical elements covered with such a plastic film

Method for producing a plastic film containing a compound absorbing ultraviolet radiation comprising (a) depositing an alcoholic solution of polyvinyl butyral on a transparent plastic support film, (b) evaporating the solvent from the alcoholic solution of polyvinyl butyral so as to form a polyvinyl butyral layer on the transparent support film, (c) printing the polyvinyl butyral layer with an ink absorbing ultraviolet radiation (UV absorber) in a pattern, (d) heating the transparent plastic support film, coated with the printed polyvinyl butyral layer so as to enable at least part of the UV absorber to pass from the polyvinyl butyral layer to the plastic support film, (e) removing the polyvinyl butyral layer, preferably by washing with a suitable solvent. The application also relates to the film obtained by this method and the use of this film for producing a photochromic element with a spatially non-uniform behavior.

Transparent electrochromic systems with a plurality of polarisation electrodes

The invention relates to transparent electrochromic systems which each include one pair of supply electrodes and at least one pair of polarization electrodes. The polarization electrodes prevent a reaction of mutual neutralization of the electroactive substances of the systems from causing unnecessary consumption of electric current. Said electrodes also prevent a neutralization reaction from limiting a lower value of light transmission of the systems. For this purpose, the polarization electrodes produce an electric field inside the systems, which attracts the electroactive substances that have already reacted with the supply electrodes to different areas.

Method for obtaining a material comprising a liquid crystal mix with a stabilized blue phase and optical article comprising this material

A method for obtaining a material containing mesogenic compounds forming a liquid crystal mix with a stabilized blue phase. The method includes the steps of a) inducing the liquid crystal mix, contained in a chemical composition, to form the blue phase, then b) illuminating the chemical composition with a light beam of visible wavelength in order to trigger the polymerization of monomers contained in the chemical composition, to obtain the material comprising the liquid crystal mix in the blue phase stabilized by the polymerized monomers. The chemical composition contains a mesogenic system and a chemical photo-initiator system adapted to trigger the polymerization of the monomers when illuminated by the light beam of visible wavelength, in which the mesogenic system includes the mesogenic compounds forming the liquid crystal mix, a chiral dopant adapted to induce the blue phase, and a monomer mix comprising the monomers adapted to polymerize.

Selective tinting method

The invention relates to a selective dyeing method used for dyeing a substrate (10), selectively within a first exposed surface portion (S1) of said substrate. For this purpose, the substrate consists of a material (2) that is impervious to a dye with the exception of the first portion of the exposed surface. In particular, the impervious material can form a layer which covers a base portion (3) of the substrate in a second portion (S2) of the exposed surface. The substrate is heated such that the dye (C) penetrates a pervious material (1) which constitutes the first portion of the exposed surface. The method is particularly useful for eliminating light diffused by the walls of a multilayer structure which is supported by means of ocular glass.

Electrochromic composition

The present invention relates to an electrochromic composition comprising at least one reducing compound and at least two oxidizing compounds, said at least two oxidizing compounds having similar oxydo-reduction potentials. More specifically, said at least two oxidizing compounds are selected from viologen derivatives. Said composition can be used as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.

Electrochromic two-core viologen derivatives and optical articles containing them

The present invention relates to a group of novel electrochromic materials. More specifically, it relates to electrochromic materials having two-core viologens and the use of these two-core viologens as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.

device eletrocrômico clear power electrodes and electrode polarization

Transparent optical component having cells filled with optical material

A transparent optical component having cells (1) filled with an optical material is proposed, which has a high transparency. The cells of the component are filled to levels (h1, . . . , h5) which vary randomly, and the variations of which are adapted so as not to cause a perceptible optical defect. To do this, the fill levels of the cells are adapted so that the phase shifts experienced by the light rays (R1, . . . , R5) which pass through the cells have a root mean square deviation of less than one quarter of the wavelength (1). Such a component may in particular be an ophthalmic lens.

SELECTIVE TINTING METHOD

The invention relates to a selective dyeing method used for dyeing a substrate (), selectively within a first exposed surface portion (S) of said substrate. For this purpose, the substrate consists of a material () that is impervious to a dye with the exception of the first portion of the exposed surface. In particular, the impervious material can form a layer which covers a base portion () of the substrate in a second portion (S) of the exposed surface. The substrate is heated such that the dye (C) penetrates a pervious material () which constitutes the first portion of the exposed surface. The method is particularly useful for eliminating light diffused by the walls of a multilayer structure which is supported by means of ocular glass. 1. A selective tinting method comprising:providing a substrate having an exposed surface, said exposed surface including a first surface portion formed by a first material and a second surface potion formed by a second material that is different from said first material;providing a dye source configured to release dyes when said source is heated;transferring dyes from said dye source onto said exposed surface of the substrate by heating the dye source in proximity to the exposed surface of the substrate;causing the dyes transferred onto the first surface portion to penetrate into the first material by heating the substrate; andrinsing the exposed surface of the substrate with a dye solvent, so as to eliminate the dyes remaining on said exposed surface,wherein the second material is selected so that dyes originating from the dye source and present on the second surface portion when starting to heat the substrate do not penetrate into said second material during heating said substrate, and are eliminated while rinsing the exposed surface.2. A method according to claim 1 , wherein the second material has a gelation or softening temperature higher than a gelation or softening temperature of the first material.3. A method according to ...

METHODS AND SYSTEMS FOR AUGMENTED REALITY

A method and system for image display with a head-mounted device, which use a seethrough tunable diffractive mirror, such as a see-through tunable holographic mirror or seethrough tunable LCD array mirror, which mirror is useful in providing augmented reality. 1wherein the head-mounted device is configured for the display and visualization, by the wearer, of computer-generated images, an image source (IS),', 'a see-through tunable diffractive mirror (M), situated in front of one eye of the wearer, and', 'a controller configured for tuning the mirror (M),, 'wherein said head-mounted device (HMD) compriseswherein the image source (IS) is configured for the emission of a light beam towards said mirror (M), wherein said emitted light beam is reflected onto said mirror (M) and thereby is directed towards said eye of the wearer, so as to cause visualization of a computer-generated image by the wearer.. Head-mounted device (HMD) intended to be worn by a wearer, This application is a continuation of U.S. application Ser. No. 15/741,327, filed Jan. 2, 2018, which is a U.S. National Stage of PCT/EP2016/065361, filed Jun. 30, 2016, and claims the benefit of priority under 35 U.S.C. § 119 of European Application No. 15306097.5, filed Jul. 3, 2015, the entire contents of each of which are incorporated herein by reference.The invention relates to methods and systems for augmented reality.The invention relates more particularly to the display of computer-generated images.Head-mounted devices with display features are known in the art. Such devices include so-called ‘smart glasses’, which allow the wearer thereof to visualize images or text for augmented reality.WO 2015/032824 and WO 2015/032828 disclose head-mounted devices comprising a spatial light modulator for the display of computer-generated holographic images. In order to improve wearer visual comfort, it is desirable to provide methods and systems wherein images and text are displayed in a customized way that is ...

Light collecting device

A light collecting device is adapted to collect and guide light to a light sensor. The device includes a monocular collecting module including at least one light collector configured to collect light from the environment of the device, a binocular collecting module including a first and a second distant light collector configured to collect light from the environment of the device, and an optical waveguide configured to guide the light collected from the monocular and binocular collecting modules to a light sensor.

Methods and systems for augmented reality

A method and system for image display with a head-mounted device, which use a seethrough tunable diffractive mirror, such as a see-through tunable holographic mirror or seethrough tunable LCD array mirror, which mirror is useful in providing augmented reality.

A METHOD OF CONTROLLING A PROGRAMMABLE LENS DEVICE

A method of controlling a programmable lens device comprising a programmable lens and an optical function controller, the programmable lens having an optical function and extending between at least one eye of the wearer and the real world scene when the device is used by the wearer, and the optical function controller being arranged to control the optical function of the programmable lens, the method comprising: —an optical function data receiving step during which optical function data relating to the optical function of the programmable lens is received by the optical function controller, —an activity data receiving step during which activity data relating to the activity of the wearer are received by the optical function controller, —an optical function modifying step during which the optical function of the programmable electronic lens device is modified by the optical function controller based on the optical function data and the activity data. 1. A method of controlling a programmable lens device comprising a programmable lens and an optical function controller , the programmable lens having an optical function and extending between at least one eye of a wearer and a real world scene when the programmable lens device is used by the wearer , and the optical function controller being arranged to control the optical function of the programmable lens , the method comprising:an optical function data receiving step during which optical function data relating to the optical function of the programmable lens is received by the optical function controller;an activity data receiving step during which activity data relating to an activity of the wearer are received by the optical function controller; andan optical function modifying step during which the optical function of the programmable lens is modified by the optical function controller based on the optical function data and the activity data.2. The method according to claim 1 , wherein the optical function data ...

A METHOD OF CONTROLLING A PROGRAMMABLE LENS DEVICE

A method of controlling a programmable lens device comprising a programmable lens and an optical function controller, the programmable lens having an optical function and extending between at least one eye of the wearer and the real world scene when the device is used by the wearer, and the optical function controller being arranged to control the optical function of the programmable lens, the method comprising: an optical function data receiving step during which optical function data relating to the optical function of the programmable lens is received by the optical function controller, an optical function modifying step during which the optical function of the programmable electronic lens device is modified by the optical function controller based on the optical function data. 1. A method of controlling a programmable lens device comprising a programmable lens and an optical function controller , the programmable lens having an optical function and extending between at least one eye of a wearer and a real world scene when the programmable lens device is used by the wearer , and the optical function controller being arranged to control the optical function of the programmable lens , the method comprising:an optical function data receiving step during which optical function data relating to the optical function of the programmable lens is received by the optical function controller; andan optical function modifying step during which the optical function of the programmable lens is modified by the optical function controller based on the optical function data.2. The method according to claim 1 , wherein the optical function data comprise a computer program adapted to be executed by the optical function controller and during the optical function modifying step the computer program is executed by the optical function controller so as to modify the optical function of the programmable optical lens.3. The method according to claim 1 , wherein the optical function data ...

ELECTROCHROMIC COMPOSITION

The present invention relates to an electrochromic composition comprising at least one reducing compound, at least one oxidizing compound which is selected from specific viologen derivatives, and at least one dye. Said composition can be used as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens. 115.-. (canceled)18. The electrochromic composition according to claim 16 , wherein R claim 16 , R claim 16 , Rand Rare each independently selected from C-Calkyl claim 16 , C-Calkoxycarbonyl claim 16 , alkanoyl claim 16 , aroyl claim 16 , aryl and heteroaryl claim 16 , wherein the aryl and heteroaryl may be substituted by one or more substituents selected from C-Calkyl and C-Chaloalkyl claim 16 , preferably claim 16 , R claim 16 , R claim 16 , Rand Rare each independently selected from methyl claim 16 , ethoxycarbonyl claim 16 , phenyl claim 16 , p-methylphenyl and p-trifluoromethylphenyl.19. The electrochromic composition according to claim 16 , wherein the counterion X is selected from halide claim 16 , tetrafluoroborate claim 16 , tetraphenylborate claim 16 , hexafluorophosphate claim 16 , nitrate claim 16 , methanesulfonate claim 16 , trifluoromethane sulfonate claim 16 , toluene sulfonate claim 16 , hexachloroantimonate claim 16 , bis(trifluoromethanesulfonyl)imide claim 16 , perchlorate claim 16 , acetate and sulfate.23. The electrochromic composition according to claim 16 , wherein the reducing compound is selected from ferrocene and their derivatives such as ethyl ferrocene claim 16 , t-butyl ferrocene; phenoxazine and their derivatives claim 16 , such as N-benzylphenoxazine; phenazine and their derivatives claim 16 , such as 5 claim 16 ,10-dihydrophenazine claim 16 , N claim 16 ,N claim 16 ,N′ claim 16 ,N′-tetramethyl-p-phenylenediamine; phenothiazine and their derivatives claim 16 , such as 10-methylphenothiazine and isopropylphenothiazine; thioanthrene; and tetrathiafulvalene.24. The electrochromic composition ...

Optical Element Comprising Cells Sealed by Means of a Layer of Adhesive Material

An optical element comprises a base component (1) provided with a set of cells (10) open on a face of the component and a film (2) for sealing the cells. The film is adhesively bonded to ends (12) of separation walls (11) present between the cells. The adhesive bonding is carried out by applying a pressure adjusted so that the ends of the walls penetrate into a layer of adhesive material (3) positioned between the film and the set of cells. A refractive index value of the adhesive material is adjusted with respect to a value of the same index for the material of the ends of the walls m order to obtain an optical element which exhibits a high transparency.

Producing a Transparent Optical Element Comprising a Substance Contained in Cells

The invention concerns a method for producing a transparent optical element (1) including filling cells (10) of the element with a substance having an optical property. It consists in moving an amount of the substance (20) radially on the cells, towards a peripheral edge of the optical element, such that the substance penetrates each cell. Optionally, the cells may be sealed with a film (30) fixed on the partition walls (11) of the cells. The filling and the sealing of the cells may be carried out in a single step of the process.

TRANSPARENT OPTICAL COMPONENT HAVING CELLS FILLED WITH OPTICAL MATERIAL

A transparent optical component having cells (1) filled with an optical material is proposed, which has a high transparency. The cells of the component are filled to levels (h1, . . . , h5) which vary randomly, and the variations of which are adapted so as not to cause a perceptible optical defect. To do this, the fill levels of the cells are adapted so that the phase shifts experienced by the light rays (R1, . . . , R5) which pass through the cells have a root mean square deviation of less than one quarter of the wavelength (1). Such a component may in particular be an ophthalmic lens.

Electrochromic device with selective membrane

An electrochromic device including a selective membrane separating two liquid media including at least one electrochromic compound and at least one compound able to be oxidized or reduced and showing low energy consumption.

Electrochromic compounds and optical articles containing them

The present invention relates to a group of novel electrochromic compounds. More specifically, it relates to electrochromic compounds comprising one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.

SELECTIVE TINTING METHOD

A selective dyeing method is used for dyeing a substrate, selectively within a first exposed surface portion of said substrate. For this purpose, the substrate consists of a material that is impervious to a dye with the exception of the first portion of the exposed surface. In particular, the impervious material can form a layer which covers a base portion of the substrate in a second portion of the exposed surface. The substrate is heated such that the dye penetrates a pervious material which constitutes the first portion of the exposed surface. The method is particularly useful for eliminating light diffused by the walls of a multilayer structure which is supported by means of ocular glass. 2. The transparent cellular component of claim 1 , wherein the first material forms a transparent layer having opposite first and second sides claim 1 , the second side facing the base substrate claim 1 , and the second material forms a network of walls arranged on the first side of the transparent layer claim 1 , the walls extending perpendicularly to the upper surface of the base substrate.3. The transparent cellular component of claim 1 , wherein the second material incorporates dyes and the first material is without dyes.4. The transparent cellular component of claim 1 , wherein a distribution of said dyes inside the second material corresponds to a diffusion profile from a surface of said second material.5. A transparent cellular component allowing a clear vision through said component and comprising:a transparent base substrate having an upper surface;a transparent first material supported by the upper surface of the base substrate and having opposite first and second sides, the second side facing the base substrate; anda transparent second material arranged on the first side of the first material, the walls extending perpendicularly to the upper surface of the base substrate,wherein the second material incorporate dyes in a distribution of said dyes inside the second ...

Method of controlling a programmable lens device

A method of controlling a programmable lens device comprising a programmable lens and an optical function controller, the programmable lens having an optical function and extending between at least one eye of the wearer and the real world scene when the device is used by the wearer, and the optical function controller being arranged to control the optical function of the programmable lens, the method comprising: —an optical function data receiving step during which optical function data relating to the optical function of the programmable lens is received by the optical function controller, —an activity data receiving step during which activity data relating to the activity of the wearer are received by the optical function controller, —an optical function modifying step during which the optical function of the programmable electronic lens device is modified by the optical function controller based on the optical function data and the activity data.

Photochromic optical article comprising a saturated photochromic coating and a film absorbing UV radiation

The invention relates to a photochromic optical article with reduced thermal dependency, comprising: (a) a transparent substrate, (b) a saturated photochromic layer having, in the activated state and at a temperature of 20° C. or greater, a relative transmission factor of less than 1% in the visible range, and (c) an anti-UV coating of plastic material at least partially covering the saturated photochromic layer, the said anti-UV coating containing at least one agent which absorbs UV radiation (anti-UV agent) and is distributed in a pattern consisting of a multitude of points, each having a surface area of less than 0.15 mm 2, the average distance between two neighboring points lying between 0.5 and 2 mm and the ratio of the overall surface area of all the points to the total surface area of the anti-UV coating being such that the relative transmission factor of the optical article in the visible range in the activated state and at 20° C. or greater is at least equal to 5%. The invention also relates to two methods for manufacturing such an optical article.

PHOTOCHROMIC OPTICAL ARTICLE COMPRISING A SATURATED PHOTOCHROMIC COATING AND A FILM ABSORBING UV RADIATION

The invention relates to a photochromic optical article with reduced thermal dependency, comprising: (a) a transparent substrate, (b) a saturated photochromic layer having, in the activated state and at a temperature of 20° C. or greater, a relative transmission factor of less than 1% in the visible range, and (c) an anti-UV coating of plastic material at least partially covering the saturated photochromic layer, the said anti-UV coating containing at least one agent which absorbs UV radiation (anti-UV agent) and is distributed in a pattern consisting of a multitude of points, each having a surface area of less than 0.15 mm 2, the average distance between two neighbouring points lying between 0.5 and 2 mm and the ratio of the overall surface area of all the points to the total surface area of the anti-UV coating being such that the relative transmission factor of the optical article in the visible range in the activated state and at 20° C. or greater is at least equal to 5%. The invention also relates to two methods for manufacturing such an optical article.

Plateau-based control of the transmission of a variable transmission lens

The invention relates to a variable transmittance device including at least one variable transmittance lens and a control circuit comprising at least one sensor suitable for measuring an illuminance (E), the control circuit being suitable for automatically controlling the value of the transmittance of the variable transmittance lens depending on the illuminance (E) measured by the sensor, wherein the control circuit defines a plurality of successive illuminance ranges (P) each illuminance range (P) being bounded by a minimum illuminance value (Emin) and a maximum illuminance value (Emax), and wherein the control circuit is suitable for controlling the transmittance of the lens to a plurality of setpoint transmittance values (Tv) respectively corresponding to said plurality of illuminance ranges (P).

Methods and systems for augmented reality

Methods and systems (terminals, devices) for the generation, the retrieval and the display of computer-generated holographic images through a head-mounted display. The holographic images may be used as virtual retrievable tags for display in augmented reality.

Method of controlling a programmable lens device

A method of controlling a programmable lens device comprising a programmable lens and an optical function controller, the programmable lens having an optical function and extending between at least one eye of the wearer and the real world scene when the device is used by the wearer, and the optical function controller being arranged to control the optical function of the programmable lens, the method comprising: an optical function data receiving step during which optical function data relating to the optical function of the programmable lens is received by the optical function controller, an optical function modifying step during which the optical function of the programmable electronic lens device is modified by the optical function controller based on the optical function data.

Variable power optical element

A variable power optical element is divided into cells which contain two liquid crystals mixed according to different proportions. The proportion of one of the liquid crystals in each cell increases on the basis of the radial distance between a central point of the optical element and said cell. An appropriate selection of the two liquid crystals results in a higher variation of the optical power between two control states of said optical element. More particularly, the optical element may consist of an ophthalmic lens which changes between a convergent lens state and a divergent lens state.

VARIABLE POWER OPTICAL ELEMENT

A variable power optical element is divided into cells which contain two liquid crystals mixed according to different proportions. The proportion of one of the liquid crystals in each cell increases on the basis of the radial distance between a central point of the optical element and said cell. An appropriate selection of the two liquid crystals results in a higher variation of the optical power between two control states of said optical element. More particularly, the optical element may consist of an ophthalmic lens which changes between a convergent lens state and a divergent lens state. 1. A variable power optical element , comprising:a substrate;a transparent set of cells separated and closed, juxtaposed substantially parallel to a face of the substrate; anda controllable polarization system configured to cause changes between a homeotropic orientation and a planar orientation of nematic or cholesteric liquid crystals contained in the cells, wherein:the set includes at least one first cell situated close to a central point of the face of the substrate and containing a nematic or cholesteric first liquid crystal, and second cells situated farther from said central point and containing a mixture of said first liquid crystal with a nematic or cholesteric second liquid crystal different from said first liquid crystal, respective proportions of said second liquid crystal in relation to said first liquid crystal in the mixture inside the second cells increasing as a function of radial distances between said second cells and the central point of the face of the substrate,the proportions of the second liquid crystal in the second cells increase as a function of the radial distance such that said optical element has a first or a second optical power value for a light beam passing through the cell set, as a function of a command applied to the polarization system,the polarization system comprises two transparent electrodes facing each other and each extending ...

Selective tinting method

A selective dyeing method is used for dyeing a substrate, selectively within a first exposed surface portion of said substrate. For this purpose, the substrate consists of a material that is impervious to a dye with the exception of the first portion of the exposed surface. In particular, the impervious material can form a layer which covers a base portion of the substrate in a second portion of the exposed surface. The substrate is heated such that the dye penetrates a pervious material which constitutes the first portion of the exposed surface. The method is particularly useful for eliminating light diffused by the walls of a multilayer structure which is supported by means of ocular glass.

Method for controlling an ophthalmic system on the basis of a measurement and information obtained by an external electronic device

A method for controlling an ophthalmic system including at least one optical element, at least one measuring sensor, at least one interface for communication with a communicating external electronic device, and at least one processor connected to the optical element and used to control a variation of a functionality relating to the optical element. The method includes: obtaining at least one measurement using the sensor, selecting at least one piece of information obtained by a communicating external electronic device, determining an instruction based on the measurement acquired by the sensor and the information obtained by the communicating external electronic device, and executing the instruction by the processor to control the variation of the functionality relating to the optical element.

ELECTROCHROMIC COMPOSITION

The present invention relates to an electrochromic composition comprising at least one reducing compound and at least two oxidizing compounds, said at least two oxidizing compounds having similar oxydo-reduction potentials. More specifically, said at least two oxidizing compounds are selected from viologen derivatives. Said composition can be used as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens. 116.-. (canceled)18. The electrochromic composition according to claim 17 , wherein the oxydo-reduction potentials of the electrochromic oxidizing compounds differ from each other from less than 0.2 V.19. The electrochromic composition according to claim 18 , wherein the oxydo-reduction potentials of the electrochromic oxidizing compounds differ from each other from less than 0.15 V.20. The electrochromic composition according to claim 19 , wherein the oxydo-reduction potentials of the electrochromic oxidizing compounds differ from each other from less than 0.1 V.21. The electrochromic composition according to claim 20 , wherein the oxydo-reduction potentials of the electrochromic oxidizing compounds differ from each other from less than 0.05 V.23. The electrochromic composition according to claim 17 , wherein R claim 17 , R claim 17 , Rand Rare each independently selected from C-Calkyl claim 17 , C-Calkoxycarbonyl claim 17 , alkanoyl claim 17 , aroyl claim 17 , aryl and heteroaryl claim 17 , wherein the aryl and heteroaryl may be substituted by one or more substituents selected from C-Calkyl and C-Chaloalkyl claim 17 , preferably claim 17 , R claim 17 , R claim 17 , Rand Rare each independently selected from methyl claim 17 , ethoxycarbonyl claim 17 , phenyl claim 17 , p-methylphenyl and p-trifluoromethylphenyl.24. The electrochromic composition according to claim 17 , wherein the counterion X is selected from halide claim 17 , tetrafluoroborate claim 17 , tetraphenylborate claim 17 , hexafluorophosphate claim 17 , ...

Spectacle lens comprising an activable optical filter and optical equipment comprising such spectacle lens

A spectacle lens includes an activable optical filter having at least an electrochromic device and being configured to be actively switched between at least three configurations. In the first configuration, the activable optical filter is uniform. In the second configuration, the activable optical filter attenuates selectively light from a localized light source. In the third configuration, the activable optical filter is uniform. Furthermore, the chromaticity difference ΔChrom between each of the configurations is smaller than or equal to 20.

Ophthalmic device comprising an ophthalmic spectacle lens and a plurality of electronic components

An ophthalmic spectacle lens and a plurality of electronic components arranged in a form of at least one strip in contact with and along the periphery of the ophthalmic lens. An ophthalmic apparatus includes at least one frame and at least one ophthalmic device.

METHOD FOR CONTROLLING AN OPHTHALMIC SYSTEM ON THE BASIS OF A MEASUREMENT AND INFORMATION OBTAINED BY AN EXTERNAL ELECTRONIC DEVICE

A method for controlling an ophthalmic system including at least one optical element, at least one measuring sensor, at least one interface for communication with a communicating external electronic device, and at least one processor connected to the optical element and used to control a variation of a functionality relating to the optical element. The method includes: obtaining at least one measurement using the sensor, selecting at least one piece of information obtained by a communicating external electronic device, determining an instruction based on the measurement acquired by the sensor and the information obtained by the communicating external electronic device, and executing the instruction by the processor to control the variation of the functionality relating to the optical element. 116-. (canceled)17. A method for controlling an ophthalmic system including: at least one optical element; at least one measurement sensor; at least one communication interface for communicating with a communicating external electronic device; at least one processor linked to the optical element and configured to control a variation of a functionality related to the optical element;the method comprising:acquiring at least one measurement by the sensor of the ophthalmic system;selecting at least one item of information obtained by a communicating external electronic device;determining an instruction based on the measurement acquired by the sensor and of the item of information obtained by the communicating external electronic device; andexecuting the instruction by the processor to control the variation of the functionality related to the optical element.18. The method as claimed in claim 17 , wherein the determining the instruction is performed by the electronic device claim 17 , the method further comprising:transmitting the instruction from the electronic device to the processor of the ophthalmic system before executing the instruction to control the variation of the ...

PIECE OF OPHTHALMIC EQUIPMENT; METHOD FOR SUPPLYING A PIECE OF OPHTHALMIC EQUIPMENT WITH POWER

Piece of ophthalmic equipment comprising a frame (), at least one ophthalmic lens (), wherein the frame and/or the ophthalmic lens comprises a conductive material arranged, on the periphery of the external outline of the ophthalmic lens, in the form of at least one substantially closed turn (), so as to form a supply inductor allowing the electronic component to be supplied with electrical power via mutual inductance with a source magnetic circuit that has an inductance. 1. A piece of ophthalmic equipment comprising a frame , at least one ophthalmic lens having an external outline and arranged in the frame , and at least one electronic component , wherein at least one of the frame and the ophthalmic lens comprises a conductive material arranged , on the periphery of the external outline of the ophthalmic lens , in a form of at least one substantially closed turn , so as to form a supply inductor allowing the at least one electronic component to be supplied with electrical power , and wherein the supply inductor is supplied with power via mutual inductance with a source magnetic circuit that has an inductance.2. The piece of ophthalmic equipment according to claim 1 , wherein the conductive material is arranged in the form of a plurality of closed turns that are arranged on the periphery of the external outline of the ophthalmic lens.3. The piece of ophthalmic equipment according to claim 2 , wherein turns of the supply inductor are insulated from one another claim 2 , are contiguous and are substantially concentric.4. The piece of ophthalmic equipment according to claim 2 , wherein a number of turns of the supply inductor is lower than or equal to 50.5. The piece of ophthalmic equipment according to claim 2 , wherein the plurality of closed turns have cross sections the smallest dimension and the largest dimension of which are larger than or equal to 10 μm and smaller than or equal to 200 μm.6. The piece of ophthalmic equipment according to claim 1 , wherein the ...

Phase change optical device

An optical device including an aerogel located in an encapsulating structure, an optically non isotropic material presenting a refractive index which can be changed upon submitting said material to an electrical field, preferentially a liquid crystal mixture, embedded in the aerogel, and first and second electrodes arranged to generate an electric field in the encapsulating structure.

SPECTACLE LENS COMPRISING AN ACTIVABLE OPTICAL FILTER

A spectacle lens including an activable optical filter, the activable optical filter being configured to be actively switched between at least three configurations, wherein in the first configuration, the color perception of the spectacle wearer is unaltered, in the second configuration the activable optical filter provides a specific filtering function, in the third configuration vision of the spectacle wearer is protected against glare. 1. A spectacle lens comprising an activable optical filter , the activable optical filter being configured to be actively switched between at least three configurations , whereinin the first configuration, the color perception of the spectacle wearer is unaltered and light transmitted through the activable optical filter has a chroma C*1 and hue h° 1,in the second configuration light transmitted through the activable optical filter has a chroma C*2 and hue h° 2,in the third configuration vision of the spectacle wearer is protected against glare and light transmitted through the activable optical filter has a chroma C*3 and hue h° 3, andthe chromaticity difference ΔChrom between (C*2, h° 2) and (C*3, h° 3) is larger than or equal to 20.2. The spectacle lens according to claim 1 , wherein in the first configuration the activable optical filter has a transmittance T1 greater than or equal to 80% and/or light transmitted through the activable optical filter has chroma C*1 smaller than or equal to 15.3. The spectacle lens according to claim 1 , wherein the first configuration corresponds to a non activated configuration of the activable optical filter.4. The spectacle lens according to claim 1 , wherein in the third configuration the activable optical filter has a transmittance T3 smaller than or equal to 8%.5. The spectacle lens according to claim 1 , wherein in the third configuration light transmitted through the activable optical filter has a neutral color or has a chromaticity difference ΔChrom between (C*1 claim 1 , h° 1) and (C*3 ...

CONNECTED OPTICAL ELEMENT

The invention relates to a method for connecting an optical element, for example an ophthalmic lens, to a communication network, in which an identifier is assigned to the optical element in order to route data via the network in accordance with said identifier. 1. A method for connecting an optical element , for example an ophthalmic lens , to a communication network ,in which an identifier is allocated to the optical element so as to route data via the network as a function of said identifier.2. The method as claimed in claim 1 , comprising the steps of:sending of at least one instruction able to be executed by a processor, the instruction being sent by an electronic device connected to the communication network destined for a network communication interface linked to the optical element; andreception of the instruction by the network communication interface linked to the optical element.3. The method as claimed in claim 2 , in which the optical element is linked to a processor and to a memory claim 2 , the method furthermore comprising the steps of:storage of the instruction received in the memory linked to the optical element; andexecution of the instruction by the processor linked to the optical element.4. The method as claimed in claim 2 , in which the instruction is able to be executed by the processor for the activation of a functionality related to the optical element claim 2 , for the activation of a functionality related to an electronic device connectable to the network or for the activation of a functionality related to a device connectable to the optical element.5. The method as claimed in claim 2 , in which the optical element is an ophthalmic lens of electroactive type claim 2 , and in which the activation of the functionality related to the lens comprises a modification of at least one characteristic of an electroactive cell included in the lens.6. The method as claimed in claim 2 , in which the method furthermore comprises claim 2 , the steps of: ...

ELECTROCHROMIC COMPOUNDS AND OPTICAL ARTICLES CONTAINING THEM

Electrochromic compounds and optical articles containing them The present invention relates to a group of novel electrochromic compounds. More specifically, it relates to electrochromic compounds comprising one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens. 2. The compound according to claim 1 , wherein Z is an unsubstituted phenylene or an unsubstituted naphtylene selected from the group consisting of:ortho-branched phenylene,para-branched phenylene; and2,6-branched naphthylene.3. The compound according to claim 1 , wherein Z is a 2 claim 1 ,3 branched pyridinediyl radical.4. The compound according to claim 1 , wherein Z is a pyridiniumyl radical selected from the group consisting of:1,2-branched pyridiniumyl radical, preferably substituted by at least one aryl group;1,4-branched pyridiniumyl radical substituted or fused with at least one bicyclic system, preferably substituted by at least one aryl group, a N-alkylpyridinium group or fused with at least one 1,2,3,4-tetrahydronaphthalene system;3,4 branched pyridiniumyl radical; and3,5 branched pyridiniumyl radical.5. The compound according to claim 1 , wherein Y is N or (N—R)(X) where Ris a C-Calkyl claim 1 , a N—C-Calkylpyridinium or a phenyl.6. The compound according to claim 1 , wherein each one of R-Ris H.7. The compound according to claim 1 , wherein Y is N and n is equal to 1 or wherein Y is (N—R)(X) and n is equal to 2 claim 1 , 3 or 4.8. The compound according to claim 1 , wherein the counterion Xis selected from the group consisting of halide claim 1 , tetrafluoroborate claim 1 , tetraphenylborate claim 1 , hexafluorophosphate claim 1 , nitrate claim 1 , methanesulfonate claim 1 , trifluoromethane sulfonate claim 1 , toluene sulfonate claim 1 , hexachloroantimonate claim 1 , bis(trifluoromethanesulfonyl)imide claim 1 , perchlorate claim 1 , acetate and sulfate.10. The compound according to ...

OPHTHALMIC DEVICE COMPRISING AN ELECTROCHROMIC CELL

The invention relates to an ophthalmic device () which includes an electrochromic cell () comprising at least two transparent layers () having curved inner surfaces () and defining therebetween a closed recess () filled with an electrochromic composition (), the recess () being defined peripherally by a sealing gasket () made from an adhesive material (), the sealing gasket () being suitable for keeping the two transparent layers () assembled together. 1. An ophthalmic device comprising an electrochromic cell comprising at least two transparent layers having curved inner faces that delimit between them a sealed cavity filled by an electrochromic composition , the cavity being delimited at the periphery by a seal formed from an adhesive material , the seal having a width of less than 1000 micrometers and being suitable for supporting the two transparent layers assembled with one another.2. The device as claimed in claim 1 , wherein the transparent layers are ophthalmic lenses that meet claim 1 , with the electrochromic composition of the cavity claim 1 , an ophthalmic prescription of a wearer of the device.3. The device as claimed in claim 1 , wherein the seal has a height (h) of between 40 micrometers and 200 micrometers.4. The device as claimed in claim 1 , wherein the seal is made with a cationically initiated epoxy resin.5. The device as claimed in claim 1 , wherein the seal contains spacing elements suitable for ensuring a gap between the two transparent layers assembled by the seal and forming the cavity.6. The device as claimed in claim 1 , wherein the cavity has a constant thickness (e) between the two inner faces of the transparent layers.7. The device as claimed in claim 1 , wherein the cavity has a variable thickness (e) between the two inner faces of the transparent layers.8. The device as claimed in claim 1 , wherein the inner faces of the transparent layers are each completely covered by a conductive coating.9. The device as claimed in claim 1 , wherein ...

METHODS AND SYSTEMS FOR AUGMENTED REALITY

A method and system for image display with a head-mounted device, which use a see-through tunable diffractive mirror, such as a see-through tunable holographic mirror or see-through tunable LCD array mirror, which mirror is useful in providing augmented reality. 114-. (canceled)15: A head-mounted device intended to be worn by a wearer , configured for display and visualization , by the wearer , of computer-generated images , wherein the head-mounted device comprises:an image source;a see-through tunable diffractive mirror, situated in front of one eye of the wearer; anda controller configured to tune the mirror;wherein the image source is configured for emission of a light beam towards the mirror, wherein the emitted light beam is reflected onto the mirror and thereby is directed towards the eye of the wearer, to cause visualization of a computer-generated image by the wearer.16: A head-mounted device according to claim 15 ,wherein the mirror may be tuned to adjust at least partially the wearer's vision for the visualization of the displayed computer-generated image.17: A head-mounted device according to claim 15 ,wherein the mirror comprises one or more areas of tunable refractive index/indices.18: A head-mounted device according to claim 15 ,wherein the mirror comprises an array of individually tunable pixels.19: A head-mounted device according to claim 15 ,wherein the mirror comprises an array of individually tunable recorded holographic pixels.20: A head-mounted device according to claim 15 ,wherein the mirror comprises a tunable transparent array of liquid crystal,wherein the array is active or passive.21: A head-mounted device according to claim 15 , further comprising at least one sensor selected from:one or more scene cameras,one or more luminance sensors and luminosity sensors, orone or more eye-trackers.22: A head-mounted device according to claim 15 ,further comprising an ophthalmic lens configured to correct at least partially the wearer's ametropia in ...

LIGHT COLLECTING DEVICE

A light collecting device is adapted to collect and guide light to a light sensor. The device includes a monocular collecting module including at least one light collector configured to collect light from the environment of the device, a binocular collecting module including a first and a second distant light collector configured to collect light from the environment of the device, and an optical waveguide configured to guide the light collected from the monocular and binocular collecting modules to a light sensor. 1. A light collecting device adapted to collect and guide light to a light sensor , the device comprising:a monocular collecting module comprising at least one light collector configured to collect light from the environment of the device,a binocular collecting module comprising a first and a second distant light collector configured to collect light from the environment of the device, the light collected by the monocular collecting module is guided to a monocular zone of the light sensor,', 'the light collected by the first light collector of the binocular collecting module is sent to a first zone of the light sensor, and', 'the light collected by the second light collector of the binocular collecting module is sent to a second zone of the light sensor,, 'an optical waveguide configured to guide the light collected from the monocular and binocular collecting modules to a light sensor so thatwherein the optical waveguide is configured so that said first zone and said second zone of the light sensor have no overlap.2. The light collecting device according to claim 1 , wherein the optical waveguide is configured so that the monocular zone of the light sensor and the first and second zones of the light sensor have no overlap.3. The light collecting device according to claim 1 , whereinin said monocular state, the light collected by the first and second light collector of the binocular collecting module is not sent to the first and second zone of the light ...

OPHTHALMIC DEVICE WITH IMPROVED AMPLITUDE VARIATION CELL

The invention relates to an ophthalmic device including an electrically controllable amplitude variation cell, in particular an electrochromic transmission variation cell. More particularly, the cell () comprises a main convex surface on the front. This arrangement makes it possible for the cell to process a lateral luminous flux (RP), unlike cells in the prior art (IAA). 1. An ophthalmic device comprising a cell of electrically controllable variable amplitude , wherein said cell includes at least one transparent layer having a convex main surface front-side.2. The device as claimed in claim 1 , wherein the cell comprises at least a first transparent layer front-side and a second transparent layer back-side claim 1 , the first and second layers defining therebetween a cavity claim 1 , and the first layer has a main surface claim 1 , exterior to the cavity claim 1 , that is convex.3. The device as claimed in claim 2 , wherein the cavity has claim 2 , to within 30% claim 2 , a constant spacing between said first and second layers.4. The device as claimed in claim 2 , wherein the cavity is closed and filled with an electrochromic solution claim 2 , connected to a processing circuit for setting an optical amplitude of the cell.5. The device as claimed in claim 2 , wherein a face internal to the cavity of at least one of the transparent layers is covered with a conductive coating made of indium tin oxide.6. The device as claimed in claim 1 , wherein the cell is of electrically controllable variable transmission in order to be claim 1 , in the visible spectrum:higher than 80% and preferably higher than 85%, in a first state, andlower than 30% and preferably lower than 18%, in a second state.7. The device as claimed in claim 1 , wherein the cell is connected to a control circuit via a connecting element of thickness smaller than 5 μm and of width smaller than 1000 μm.8. The device as claimed in claim 1 , furthermore including a frame comprising at least one aperture ...

PLATEAU-BASED CONTROL OF THE TRANSMISSION OF A VARIABLE TRANSMISSION LENS

The invention relates to a variable transmittance device including at least one variable transmittance lens and a control circuit comprising at least one sensor suitable for measuring an illuminance (E), the control circuit being suitable for automatically controlling the value of the transmittance of the variable transmittance lens depending on the illuminance (E) measured by the sensor, wherein the control circuit defines a plurality of successive illuminance ranges (P) each illuminance range (P) being bounded by a minimum illuminance value (Emin) and a maximum illuminance value (Emax), and wherein the control circuit is suitable for controlling the transmittance of the lens to a plurality of setpoint transmittance values (Tv) respectively corresponding to said plurality of illuminance ranges (P). 1. A variable-transmittance device comprising:one variable-transmittance lens; andone control circuit comprising at least one sensor suitable for measuring a light level (E), the control circuit being suitable for automatically setting the transmittance value of the variable-transmittance lens depending on the light level (E) measured by the sensor,wherein:the control circuit defines a plurality of successive light-level plateaus (P), each light-level plateau (P) being bounded by a minimum light-level value (Emin) and a maximum light-level value (Emax), andthe control circuit is suitable for setting the transmittance of the lens to a plurality of setpoint values (Tv) corresponding to said plurality of light-level plateaus (P), respectively.2. The device as claimed in claim 1 , wherein the sensor is suitable for measuring the light level (E) periodically claim 1 , the measurement period (Tmes) of the sensor being comprised between 5 milliseconds and 1 second.3. The device as claimed in claim 1 , wherein the variation between two successive transmittance setpoint values (Tv) of the lens is comprised between 0.05 and 0.6.4. The device as claimed in claim 1 , comprising an ...

ELECTROCHROMIC TWO-CORE VIOLOGEN DERIVATIVES AND OPTICAL ARTICLES CONTAINING THEM

The present invention relates to a group of novel electrochromic materials. More specifically, it relates to electrochromic materials having two-core viologens and the use of these two-core viologens as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens. 118.-. (canceled)21. The compound according to claim 19 , wherein A and B are respectively selected from nitrogen and —N(R)— claim 19 , and from nitrogen and —N(R)— claim 19 , wherein Rand Rare independently selected from C-Calkyl claim 19 , phenyl and naphthyl which may be both substituted by one or more substituents selected from halogen claim 19 , cyano claim 19 , nitro claim 19 , hydroxy claim 19 , C-Calkyl claim 19 , C-Chaloalkyl claim 19 , C-Calkoxy claim 19 , C-Chaloalkoxy claim 19 , C-Calkylthio claim 19 , C-Chaloalkylthio claim 19 , C-Ccycloalkyl claim 19 , (C-Ccycloalkyl)C-Calkyl.22. The compound according to claim 19 , wherein the counterion X is selected from halide claim 19 , tetrafluoroborate claim 19 , tetraphenylborate claim 19 , hexafluorophosphate claim 19 , nitrate claim 19 , methanesulfonate claim 19 , trifluoromethane sulfonate claim 19 , toluene sulfonate claim 19 , hexachloroantimonate claim 19 , bis(trifluoromethanesulfonyl)imide claim 19 , perchlorate claim 19 , acetate and sulfate.24. The compound according to claim 23 , wherein Rand Rare each independently selected from phenyl claim 23 , m-methylphenyl and p-trifluoromethylphenyl and are preferably identical.27. An electrochromic composition comprising at least one compound as defined in .28. The electrochromic composition according to claim 27 , wherein said composition comprises a fluid claim 27 , mesomorphous or gel host medium.29. The electrochromic composition according to claim 28 , wherein the fluid or mesomorphous host medium is selected from the group consisting of organic solvents claim 28 , liquid crystals claim 28 , polymers claim 28 , liquid crystal polymers and mixtures ...

Methods And Systems For Augmented Reality

Methods and systems (terminals, devices) for the generation, the retrieval and the display of computer-generated holographic images through a head-mounted display. The holographic images may be used as virtual retrievable tags for display in augmented reality.

HEAD MOUNTED DEVICE COMPRISING A FOURIER HOLOGRAM

Head-mounted device intended to be worn by a wearer, 1. A head-mounted device designed to be worn by a wearer , wherein the head-mounted device is configured for the display and visualization , by the wearer , of virtual images , wherein said head-mounted device comprises:at least one light source; andat least one Fourier hologram,wherein the light source is configured to illuminate said Fourier hologram, to cause visualization of at least one virtual image by the wearer.2. The head-mounted device according to claim 1 , wherein said at least one Fourier hologram comprises at least one Fourier hologram located in a frame of the head mounted device.3. The head-mounted device according to any of claim 1 , wherein said at least one Fourier hologram comprises at least one Fourier hologram located in a layer of an ophthalmic lens provided inside the head mounted device.4. The head-mounted device according to claim 1 , further comprising at least one holographic mirror.5. The head-mounted device according to claim 1 , wherein said at least one Fourier hologram comprises at least one transmission Fourier hologram.6. The head-mounted device according to claim 5 , wherein the light source is configured to generate a bright point on an external point source.7. The head-mounted device according to claim 1 , wherein said at least one Fourier hologram comprises at least one reflection Fourier hologram.8. The head-mounted device according to any of the claim 1 , wherein said at least one virtual image comprises at least one holographic image consisting in vector graphics claim 1 , preferably consisting in a plurality of segments.9. The head-mounted device according to claim 1 , wherein said at least one source is a coherent light source.10. The head-mounted device according to claim 1 , wherein said at least one source comprises at least two sources of two different colors.11. The head-mounted device according to claim 1 , wherein said at least one Fourier hologram is recorded on ...

METHOD FOR OBTAINING A MATERIAL COMPRISING A LIQUID CRYSTAL MIX WITH A STABILIZED BLUE PHASE AND OPTICAL ARTICLE COMPRISING THIS MATERIAL

Disclosed herein is a method for obtaining a material comprising mesogenic compounds forming a liquid crystal mix with a stabilized blue phase. The method includes the steps of a) inducing the liquid crystal mix, contained in a chemical composition, to form the blue phase, then b) illuminating the chemical composition with a light beam of visible wavelength in order to trigger the polymerization of monomers contained in the chemical composition, to obtain the material comprising the liquid crystal mix in the blue phase stabilized by the polymerized monomers. The chemical composition contains a mesogenic system and a chemical photo-initiator system adapted to trigger the polymerization of the monomers when illuminated by the light beam of visible wavelength, in which the mesogenic system includes the mesogenic compounds forming the liquid crystal mix, a chiral dopant adapted to induce the blue phase, and a monomer mix comprising the monomers adapted to polymerize. 1. A method for obtaining a material comprising mesogenic compounds forming a liquid crystal mix with a stabilized blue phase , the method comprising:a) inducing the liquid crystal mix, contained in a chemical composition, to form the blue phase; thenb) illuminating the chemical composition with a light beam of visible wavelength in order to trigger the polymerization of monomers contained in the chemical composition, to obtain the material comprising the liquid crystal mix in the blue phase stabilized by the polymerized monomers,wherein:the chemical composition comprises a mesogenic system and a chemical photo-initiator system; the mesogenic compounds forming the liquid crystal mix,', 'a chiral dopant adapted to induce the blue phase, and', 'a monomer mix comprising the monomers adapted to polymerize; and, 'the mesogenic system comprises'}the chemical photo-initiator system is adapted to trigger the polymerization of the monomers when illuminated by the light beam of visible wavelength.221. The method of ...

ACTIVE OPTICAL FILTER FOR SPECTACLE LENSES

An active optical filter adapted for a spectacle lens, the active optical filter configured to filter light radiations over at least one predetermined range of wavelengths, wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm. 117-. (canceled)18. An active optical filter adapted for a spectacle lens , the active optical filter being configured to filter light radiations over at least one predetermined range of wavelengths , wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.19. The active filter according to claim 18 , wherein the central wavelength of the filtering function is greater than or equal to 400 nm and smaller than or equal to 500 nm.20. The active filter according to claim 19 , wherein the central wavelength of the filtering function is greater than or equal to 410 nm and smaller than or equal to 460 nm.21. The active filter according to claim 18 , configured to filter light radiations over at least a second predetermined range of wavelengths claim 18 , wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.22. The active filter according to claim 18 , wherein the active filter is further configured to allow shifting the central wavelength of the filtering function between a first value claim 18 , to a second value claim 18 , in a range of 540 nm to 590 nm.23. The active filter according to claim 18 , wherein the active filter is further configured to allow shifting the filtering function between a first range of wavelengths to a second range of wavelengths.24. The active filter according to claim 18 , wherein the active filter comprises at least one cell comprising a transparent material between two transparent supports and at least two transparent electrodes claim 18 , wherein at least one optical property of the transparent material over the ...

SPECTACLE LENS COMPRISING AN ACTIVABLE OPTICAL FILTER AND OPTICAL EQUIPMENT COMPRISING SUCH SPECTACLE LENS

A spectacle lens includes an activable optical filter having at least an electrochromic device and being configured to be actively switched between at least three configurations. In the first configuration, the activable optical filter is uniform. In the second configuration, the activable optical filter attenuates selectively light from a localized light source. In the third configuration, the activable optical filter is uniform. Furthermore, the chromaticity difference ΔChrom between each of the configurations is smaller than or equal to 20. 1. A spectacle lens intended to be worn by a spectacle wearer , the spectacle lens comprising an activable optical filter , the activable optical filter comprising at least an electrochromic device and being configured to be actively switched between at least three configurations , wherein:in the first configuration, the activable optical filter is uniform and light transmitted through the activable optical filter has a chroma C*1 and hue h °1,in the second configuration, the activable optical filter attenuates selectively light from a localized light source, and light transmitted through the activable optical filter where transmittance is minimum has a chroma C*2 and hue h °2,in the third configuration, the activable optical filter is uniform and light transmitted through the activable optical filter has a chroma C*3 and hue h °3, andthe chromaticity difference ΔChrom between each of the couples (C*1, h °1), (C*2, h °2) and (C*3, h °3) taken two by two is smaller than or equal to 20.2. The spectacle lens according to claim 1 , comprising at least first zone and a second zone claim 1 , wherein in the second configuration claim 1 , the activable optical filter attenuates light in the first zone more than in the second zone.3. The spectacle lens according to claim 1 , wherein the electrochromic device comprises an electrochromic dye compound and at least two transparent electrodes.4. The spectacle lens according to claim 3 , ...

ELECTROCHROMIC COMPOUNDS AND OPTICAL ARTICLES CONTAINING THEM

The present invention relates to a group of novel electrochromic compounds. More specifically, it relates to electrochromic compounds comprising one or several pyridinium rings and the use of these compounds as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens. 4: The compound of formula (I) according to claim 1 , wherein Z is a 2 claim 1 ,3 branched pyridinediyl radical.5: The compound of formula (I) according to claim 1 , wherein Z is a pyridiniumdiyl radical selected from:1,4-branched pyridiniumdiyl radical;2,3 branched N-alkylpyridiniumdiyl radical; or2,5 branched pyridiniumdiyl radical.6: The compound of formula (I) according to claim 1 , wherein Y is independently selected from N and (N—R)(X) with Ra C-Calkyl or Ris an aryl.7: The compound of formula (I) according to claim 1 , wherein each one of Ris selected from H claim 1 , alkyl claim 1 , and heteroaryl.8: The compound of formula (I) according to claim 1 , wherein both Y are N and n is equal to 1 or wherein at least one Y is (+N—R)(X—) and n is equal to 2 claim 1 , 3 or 4.9: The compound of formula (I) according to claim 1 , wherein the counterion X is selected from the group consisting of halide claim 1 , tetrafluoroborate claim 1 , tetraphenylborate claim 1 , hexafluorophosphate claim 1 , nitrate claim 1 , methanesulfonate claim 1 , trifluoromethane sulfonate claim 1 , p-toluenesulfonate claim 1 , hexachloroantimonate claim 1 , bis(trifluoromethanesulfonyl)imide claim 1 , perchlorate claim 1 , acetate and sulfate.11: An electrochromic composition comprising at least one compound according to .12: The electrochromic composition according to claim 11 , wherein said composition further comprises a host medium.13: An electrochromic device comprising a compound according to .14: The electrochromic device according to claim 13 , wherein said electrochromic device is selected from the group consisting of an optical article claim 13 , a window claim 13 , a visor ...

ACTIVE OPTICAL FILTER FOR SPECTACLE LENSES

Active optical filter adapted for a spectacle lens, the active optical filter being configured so as to filter light radiations over at least one predetermined range of wavelengths, wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm. 116-. (canceled)17. An active optical filter adapted for a spectacle lens , the active optical filter being configured to filter light radiations over at least one predetermined range of wavelengths , wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.18. The active filter according to claim 17 , wherein the central wavelength of the filtering function is greater than or equal to 400 nm and smaller than or equal to 500 nm.19. The active filter according to claim 18 , wherein the central wavelength of the filtering function is greater than or equal to 410 nm and smaller than or equal to 460 nm.20. The active filter according to claim 17 , wherein the filter is configured to filter light radiations over at least a second predetermined range of wavelengths claim 17 , wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.21. The active filter according to claim 17 , wherein the active filter is further configured so as to allow shifting the central wavelength of the filtering function between a first value claim 17 , to a second value claim 17 , for example in the range of 540 nm to 590 nm.22. The active filter according to claim 17 , wherein the active filter is further configured to allow shifting the filtering function between a first range of wavelengths to a second range of wavelengths claim 17 ,23. The active filter according to claim 17 , wherein the active filter comprises at least one cell comprising a transparent material between two transparent supports and at least two transparent electrodes claim 17 , the transparent ...

MANAGEMENT SYSTEM AND METHOD OF AN ACTIVE LENS

The invention relates to the field of management of an active lens and more particularly to a management system comprising an active lens (), a first sensor () arranged to measure data relating to an incident light on the active lens, a control unit () designed for controlling the active lens according to data measured by the first sensor, wherein the management system further comprises a second sensor () arranged to measure data relating to a light transmitted from the incident light through the active lens, the control unit being further designed to adjust, according to said data measured by the second sensor, the control already performed according to said data measured by the first sensor. Thus the management system allows taking into account data relating to the light passing through the active lens as a feedback in order to finely control the active lens. 1. A management system of an active lens comprising:an active lens;a first sensor arranged to measure data relating to at least one of an incident light on the active lens and a first light source arranged to provide data relating to an incident light on the active lens;a second sensor arranged to measure data relating to a light transmitted from the incident light through the active lens; anda control unit designed for controlling the active lens at least according to at least one of said data measured by the first sensor and said data provided by the first light source.2. The management system of claim 1 , wherein the control unit is designed for:controlling the active lens according to at least one of said data measured by the first sensor and said data provided by the first light source; andadjusting the active lens according to said data measured by the second sensor, wherein the control unit previously controlled the active lens according to at least one of said data measured by the first sensor and said data provided by the first light source.3. The management system according to claim 1 , wherein the ...

ELECTROCHROMIC DEVICE WITH SELECTIVE MEMBRANE

An electrochromic device including a selective membrane separating two liquid media including at least one electrochromic compound and at least one compound able to be oxidized or reduced and showing low energy consumption. 1. An electrochromic device comprising :two electrodes defining a chamber,a selective membrane separating the chamber in two compartments,two liquid materials filling the compartments,at least one electrochromic compound and at least one compound able to be oxidized or reduced dispersed in said liquid materials,wherein electrochromic device has a light transmittance larger than 80% in clear state.2. The electrochromic device according to claim 1 , wherein the selective membrane has a thickness lower than 300 μm.3. The electrochromic device according to claim 1 , wherein the membrane is a polyvinylalcohol membrane.4. The electrochromic device according to claim 1 , wherein liquid materials are gels.5. The electrochromic device according to claim 1 , wherein liquid materials are PMMA based gels.6. The electrochromic device according to having a light transmittance larger than 85% in clear state.7. An optical article comprising an electrochromic device according to .8. The optical article of claim 7 , said article being an optical lens.9. The optical article of claim 7 , said article being an ophthalmic lens.10. A method of preparation of an electrochromic device comprising the following steps:providing a first substrate coated with a first electrode on at least a part of one face of the first substrate,laying a first liquid material on said first electrode,laying a selective membrane on said first liquid material, forming a first compartment between said first electrode and said selective membrane,providing a second substrate coated with a second electrode on at least a part of one face of the second substrate, so as to define a second compartment limited by the selective membrane and the said second electrode,filling said second compartment with a ...

Variable power optical element

The invention relates to a variable power optical element divided into cells (2, 20, 21) which contain two liquid crystals (CL1, CL2) mixed according to different proportions. The proportion of one of the liquid crystals in each cell increases on the basis of the radial distance between a central point of the optical element and said cell. An appropriate selection of the two liquid crystals results in a higher variation of the optical power between two control states of said optical element. More particularly, the optical element may consist of an ophthalmic lens which changes between a convergent lens state and a divergent lens state.

Optical element with variable optical power

OPTICAL ELEMENT WITH VARIABLE POWER

ELECRO-COMMANDABLE OPTICAL COMPONENT COMPRISING A SET OF CELLS

Un composant optique électro-commandable (10) comprend un ensemble transparent de cellules (3) et deux électrodes transparentes (5a, 5b) parallèles et disposées en vis-à-vis de chaque côté de l'ensemble de cellules. Certaines des cellules situées entre les deux électrodes contiennent des matériaux électro-actifs différents, de sorte que lesdites cellules présentent des variations respectives différentes d'au moins une grandeur optique, en réponse à un signal électrique appliqué aux électrodes. Une fonction optique est ainsi conférée temporairement au composant, résultant de gradients de la grandeur optique formés parallèlement à la surface du composant. An electro-controllable optical component (10) comprises a transparent set of cells (3) and two parallel transparent electrodes (5a, 5b) arranged opposite each side of the set of cells. Some of the cells located between the two electrodes contain different electroactive materials, so that said cells have respective different variations of at least one optical magnitude, in response to an electrical signal applied to the electrodes. An optical function is thus temporarily imparted to the component, resulting from gradients of the optical magnitude formed parallel to the surface of the component.

Variable power optical element

The invention relates to a variable power optical element divided into cells (2, 20, 21) which contain two liquid crystals (CL1, CL2) mixed according to different proportions. The proportion of one of the liquid crystals in each cell increases on the basis of the radial distance between a central point of the optical element and said cell. An appropriate selection of the two liquid crystals results in a higher variation of the optical power between two control states of said optical element. More particularly, the optical element may consist of an ophthalmic lens which changes between a convergent lens state and a divergent lens state.

OPTICAL ELEMENT WITH VARIABLE POWER

Un élément optique à puissance variable est divisé en cellules (2, 20, 21) qui contiennent deux cristaux liquides (CL1, CL2) mélangés dans des proportions différentes. La proportion de l'un des cristaux liquides dans chaque cellule augmente en fonction de la distance radiale entre un point central de l'élément optique et ladite cellule. Une sélection adéquate des deux cristaux liquides permet d'obtenir une variation supérieure de la puissance optique entre deux états de commande dudit élément optique. En particulier, l'élément optique peut être une lentille ophtalmique qui varie entre un état de lentille convergente et un état de lentille divergente. A variable power optical element is divided into cells (2, 20, 21) which contain two liquid crystals (CL1, CL2) mixed in different proportions. The proportion of one of the liquid crystals in each cell increases as a function of the radial distance between a central point of the optical element and said cell. An adequate selection of the two liquid crystals makes it possible to obtain a greater variation of the optical power between two control states of said optical element. In particular, the optical element may be an ophthalmic lens that varies between a convergent lens state and a divergent lens state.

Transparent optical component having cells filled with an optical material

A transparent optical component having cells (1) filled with an optical material is proposed, which has a high transparency. The cells of the component are filled to levels (h 1,...,h 5) which vary randomly, and the variations of which are adapted so as not to cause a perceptible optical defect. To do this, the fill levels of the cells are adapted so that phase shifts undergone by the light rays (R 1,...,R 5) that pass through the cells have a root mean square deviation of less than one quarter of the wavelength (1). Such a component may in particular be an ophthalmic lens.

OPTICAL ELEMENT WITH CELLS CLOSED BY MEANS OF A LAYER OF ADHESIVE MATERIAL

Un élément optique comprend un composant de base (1) pourvu d'un ensemble de cellules (10) ouvertes sur une face du composant, et un film (2) de fermeture des cellules. Le film est collé sur des extrémités (12) de parois (11) de séparation présentes entre les cellules. Le collage est réalisé en appliquant une pression adaptée de sorte que les extrémités des parois pénètrent dans une couche de matériau adhésif (3) disposée entre le film et l'ensemble de cellules. Une valeur d'indice de réfraction du matériau adhésif est ajustée par rapport à une valeur du même indice pour le matériau des extrémités des parois, afin d'obtenir un élément optique qui présente une transparence élevée. An optical element comprises a base component (1) provided with a set of cells (10) open on one side of the component, and a film (2) closing the cells. The film is adhered to ends (12) of partition walls (11) present between the cells. The bonding is carried out by applying a suitable pressure so that the ends of the walls penetrate into a layer of adhesive material (3) disposed between the film and the set of cells. A refractive index value of the adhesive material is adjusted relative to a value of the same index for the material of the ends of the walls, in order to obtain an optical element which has a high transparency.

PHOTOCHROME OPTICAL ARTICLE COMPRISING A SATURATED PHOTOCHROME COATING AND A FILM ABSORBING UV RADIATION

TRANSPARENT ELECTROCHROME SYSTEM WITH SEVERAL PAIRS OF POWER ELECTRODES

Transparent optical component e.g. ophthalmic spectacles glass, forming method, involves determining variations of filling levels such that phase differences of light rays present root mean square fourteen times less than light wavelength

The method involves obtaining a layer structure (4) comprising cells (1). An optical material e.g. powder, is introduced in each cell until average filling levels (h1-h5). Random or pseudo-random variations of the filling levels are introduced between the cells. The variations of the levels between the cells are determined such that phase differences of visible light rays (R1-R5), respectively crossing the cells along a direction (N) perpendicular to a convex surface (S1) of the structure, present root mean square that is fourteen times less than a wavelength of the light.

TRANSPARENT ELECTROCHROME SYSTEM WITH SEVERAL PAIRS OF POWER ELECTRODES

Un système électrochrome transparent (100) comprend deux paires d'électrodes d'alimentation transparentes (1-4), qui sont destinées à être reliées électriquement à des sources électriques variables (20, 21). Les électrodes des deux paires sont portées par des parois externes différentes (10, 11) du système, de chaque côté d'un volume fermé qui contient des substances électroactives. Le système électrochrome possède une dynamique et une vitesse de commutation qui sont supérieures. Divers modes de réalisation de l'invention correspondent à des modes différents de connexion des électrodes aux sources électriques, et à des partitions différentes du volume fermé en cellules séparées (13). A transparent electrochromic system (100) includes two pairs of transparent power supply electrodes (1-4), which are intended to be electrically connected to varying electrical sources (20, 21). The electrodes of the two pairs are carried by different external walls (10, 11) of the system, on each side of a closed volume which contains electroactive substances. The electrochromic system has a higher dynamic and switching speed. Various embodiments of the invention correspond to different modes of connection of the electrodes to the electrical sources, and to different partitions of the closed volume in separate cells (13).

COMPOSITION OF PHOTOCHROMIC DYES IN ION SOLVENT.

OPTICAL ELEMENT WITH CELLS CLOSED BY MEANS OF A LAYER OF ADHESIVE MATERIAL

Composition comprising photochromic dyes in an ionic solvent

La présente invention concerne une composition photochromique, liquide à 20 °C, comprenant (a) au moins un colorant photochromique, et (b) un solvant ionique choisi parmi (b)(i) les liquides ioniques liquides à température ambiante (RTIL), (b)(ii) les mélanges, liquides à température ambiante, de liquides ioniques. (b)(iii) les mélanges, liquides à température ambiante, d'au moins un liquide ionique et d'au moins un solvant organique miscible avec le(s) liquide(s) ionique(s). L'invention concerne également l'utilisation d'une telle composition photochromique dans des dispositifs optiques, tels que des lentilles ophtalmiques. The present invention relates to a photochromic composition, liquid at 20 ° C, comprising (a) at least one photochromic dye, and (b) an ionic solvent selected from (b) (i) liquid ionic liquids at room temperature (RTIL), (b) (ii) mixtures, liquid at ambient temperature, of ionic liquids. (b) (iii) mixtures, liquid at ambient temperature, of at least one ionic liquid and at least one organic solvent miscible with the ionic liquid (s). The invention also relates to the use of such a photochromic composition in optical devices, such as ophthalmic lenses.

Method for producing an anti-UV plastic film with non-uniform spatial distribution of the UV absorber and photochromic optical elements covered with this plastic film

método para a produção de um filme plástico anti-uv com distribuição espacial não uniforme de absorvedor de uv e elementos ópticos fotocrômicos cobertos com esse filme plástico. método para a produção de um filme plástico contendo um composto que absorve rediação ultravioleta, compreedendo (a) deposição de uma solução alcoólica de polivinil butiral em um filme de suporte plástico transparente; (b) evaporação do solvente da solução alcoólica de plivinil butiral de modo a formar uma camada de polivinil butiral sobre o filme de suporte transparente; (c) impressão da camada de polivinil butiral com uma tinta que absorve radiação ultravioleta (absorvedor de uv) em um padrão; (d) aquecimento do filme de suporte plástico transparente, revestido com a camada impressa de polivinil butiral de modo a permitir que pelo menos parte do absorvedor de uv passe da camada de polivinil butiral para o filme de suporte plástico; (e) remoção da camada de polivinil butiral, de preferência, através de lavagem com um solvente adequado. o pedido também se refere ao filme obtido por este método e ao uso deste filme para produção de um elemento fotocrômico com um comportamento espacialmente não uniforme. Method for the production of an anti-UV plastic film with non-uniform spatial distribution of UV absorber and photochromic optical elements covered with this plastic film. a method for producing a plastic film containing an ultraviolet absorbing compound comprising (a) depositing an alcoholic polyvinyl butyral solution on a clear plastic backing film; (b) evaporating the solvent from the alcoholic polyvinyl butyral solution to form a polyvinyl butyral layer on the transparent backing film; (c) printing the polyvinyl butyral layer with an ink that absorbs ultraviolet radiation (UV absorber) in a pattern; (d) heating the clear plastic backing film coated with the printed polyvinyl butyral layer to allow at least part of the UV absorber to pass from the polyvinyl butyral layer to the plastic ...

Electrochromic composition

The present invention relates to an electrochromic composition comprising at least one reducing compound, at least one oxidizing compound which is selected from specific viologen derivatives, and at least one dye. Said composition can be used as a variable transmittance medium for the manufacture of an optical article, such as an ophthalmic lens.

IMPLEMENTING A TRANSPARENT OPTIC COMPONENT COMPRISING A SUBSTANCE CONTAINED IN CELLS

Un procédé de réalisation d'un élément optique transparent (1) comprend un remplissage de cellules (10) de l'élément avec une substance à propriété optique. Pour cela, une quantité de la substance (20) est déplacée sur les cellules, de sorte que la substance pénètre dans chaque cellule. Eventuellement, les cellules remplies peuvent être fermées de façon étanche par un film (30) fixé sur des parois (11) de séparation des cellules. Le remplissage et la fermeture des cellules peuvent être effectués lors d'une unique étape du procédé. A method of making a transparent optical element (1) comprises filling cells (10) of the element with a substance with optical property. For this purpose, a quantity of the substance (20) is displaced on the cells, so that the substance enters each cell. Optionally, the filled cells may be sealed with a film (30) attached to cell separation walls (11). The filling and closing of the cells can be carried out in a single step of the process.

Optical element comprising cells sealed by means of a layer of adhesive material

An optical element comprises a base component (1) provided with a set of cells (10) open on a face of the component and a film (2) for sealing the cells. The film is adhesively bonded to ends (12) of separation walls (11) present between the cells. The adhesive bonding is carried out by applying a pressure adjusted so that the ends of the walls penetrate into a layer of adhesive material (3) positioned between the film and the set of cells. A refractive index value of the adhesive material is adjusted with respect to a value of the same index for the material of the ends of the walls m order to obtain an optical element which exhibits a high transparency.

COMBINING PHOTOCHROMIC DYES IN ION SOLVENT.

La présente invention concerne une composition photochromique, liquide à 20 degres C, comprenant(a) au moins un colorant photochromique, et(b) un solvant ionique choisi parmi(b)(i) les liquides ioniques liquides à température ambiante (RTIL),(b)(ii) les mélanges, liquides à température ambiante, de liquides ioniques.(b)(iii) les mélanges, liquides à température ambiante, d'au moins un liquide ionique et d'au moins un solvant organique miscible avec le(s) liquide(s) ionique(s).L'invention concerne également l'utilisation d'une telle composition photochromique dans des dispositifs optiques, tels que des lentilles ophtalmiques.

SELECTIVE COLORING PROCESS

Un procédé de coloration sélective est utilisé pour colorer un substrat (10), sélectivement à l'intérieur d'une première portion de surface découverte (S ) dudit substrat. Pour cela, le substrat est constitué d'un matériau (2) imperméable à un colorant en dehors de la première portion de la surface découverte. En particulier, le matériau imperméable peut former une couche qui recouvre une partie de base (3) du substrat dans une seconde portion (S ) de la surface découverte. Le substrat est chauffé de sorte que le colorant (C) pénètre dans un matériau perméable (1) qui constitue la première portion de la surface découverte. Le procédé est particulièrement utile pour supprimer une lumière diffusée par des parois d'une structure multicouche qui est portée par un verre de lunettes. A selective staining method is used to stain a substrate (10) selectively within a first exposed surface portion (S) of said substrate. For this, the substrate is made of a material (2) impervious to a dye outside the first portion of the uncovered surface. In particular, the impermeable material may form a layer which covers a base portion (3) of the substrate in a second portion (S) of the exposed surface. The substrate is heated so that the dye (C) penetrates into a permeable material (1) which constitutes the first portion of the exposed surface. The method is particularly useful for suppressing diffused light from walls of a multilayer structure which is carried by a spectacle lens.

A method of controlling a programmable lens device

A method of controlling a programmable lens device comprising a programmable lens and an optical function controller, the programmable lens having an optical function and extending between at least one eye of the wearer and the real world scene when the device is used by the wearer, and the optical function controller being arranged to control the optical function of the programmable lens, the method comprising: an optical function data receiving step during which optical function data relating to the optical function of the programmable lens is received by the optical function controller, an optical function modifying step during which the optical function of the programmable electronic lens device is modified by the optical function controller based on the optical function data.

Electrochromic composition

Composición electrocrómica que comprende: - al menos un compuesto reductor; - al menos un colorante, - un compuesto electrocrómico oxidante seleccionado de derivados de viológeno de fórmula (I); - un compuesto electrocrómico oxidante seleccionado de derivados de viológeno de fórmula (II): **(Ver fórmula)** en las que - R1 y R2 se seleccionan, cada uno independientemente, de grupos fenilo opcionalmente sustituidos; - R3, R4, R5 y R6 se seleccionan, cada uno independientemente, de H, alquilo, alcoxi, alquiltio, haloalquilo, haloalcoxi, haloalquiltio, poliaquilenoxi, alcoxicarbonilo, arilo, arilo sustituido, heteroarilo y heteroarilo sustituido, en los que el grupo alquilo puede estar sustituido con uno o más sustituyentes seleccionados independientemente de alcoxi, cicloalquilo, arilo, arilo sustituido, heteroarilo y heteroarilo sustituido; - n, p, q y r son, cada uno independientemente, un número entero de 0 a 4, en los que, cuando n, p, q o r son dos o más, cada uno de los R3, cada uno de los R4, cada uno de los R5 o cada uno de los R6 pueden ser idénticos o diferentes; - A y B se seleccionan respectivamente de nitrógeno y -N+(R7a)-, y de nitrógeno y -N+(R7b)-, en los que R7a y R7b se seleccionan independientemente de: - alquilo que puede estar sustituido con uno o más grupos seleccionados independientemente de halógeno, alcoxi, cicloalquilo, vinilo, alilo, arilo, arilo sustituido, heteroarilo y heteroarilo sustituido; - arilo y heteroarilo que pueden estar sustituidos ambos con uno o más grupos seleccionados independientemente de: - halógeno, ciano, nitro, alquilo, haloalquilo, arilalquilo, cicloalquilo, cicloalquilalquilo y heterocicloalquilalquilo, alquenilo, alquinilo, alilo, vinilo, arilo, arilo sustituido, heteroarilo, heteroarilo sustituido, -N(arilo)2, -N(arilo)CO(arilo), -CO-arilo y -CO-arilo sustituido; - -OR8, -SR8, -S(O)R8, -S(O2)R8, -S(O2)NR8R9, -NR8R9, -NR8COR9, - NR8CO(arilo), -NR8arilo, - CH2OR8, -CH2SR8, -CH2R8, -CO-R8 y -CO2R8, en los que R8 y R9 ...

Transparent electrochromic system with a plurality of pairs of supply electrodes

The invention relates to a transparent electrochromic system (100) which includes two pairs of transparent supply electrodes (1-4), which are intended for being electrically connected to variable power sources (20, 21). The electrodes of the two pairs are supported by separate outer walls (10, 11) of the system, on either side of a closed volume which contains electroactive substances. The electrochromic system has superior dynamics and switching rate. Various embodiments of the invention correspond to various modes for connecting the electrodes to the power sources, and to various partitions of the closed volume into separate cells (13).

Method for obtaining a material comprising a liquid crystal mix with a stabilized blue phase and optical article comprising this material

The invention relates to a method for obtaining a material (10) comprising mesogenic compounds (101) forming a liquid crystal mix with a stabilized blue phase (100), comprising the following steps: a) preparing a chemical composition comprising a mesogenic system and a chemical photo-initiator system, the mesogenic system including - said mesogenic compounds forming the liquid crystal mix, - a chiral dopant adapted to induce said blue phase, and - a monomer mix comprising monomers adapted to polymerize, and the chemical photo-initiator system being adapted to trigger the polymerization of said monomers when illuminated by a light beam of visible wavelength; b) getting said liquid crystal mix to form said blue phase; c) after getting said liquid crystal mix into said blue phase, illuminating the chemical composition obtained in step a) with a light beam of visible wavelength in order to trigger the polymerization of said monomers; d) obtaining said material comprising said liquid crystal mix in the blue phase stabilized by the polymerized monomers.

Electrochromic two-core viologen derivatives and optical articles containing them

IMPLEMENTING A TRANSPARENT OPTICAL ELEMENT COMPRISING A SUBSTANCE CONTAINED IN CELLS

The invention concerns a method for producing a transparent optical element (1) including filling cells (10) of the element with a substance having an optical property. It consists in moving an amount of the substance (20) radially on the cells, towards a peripheral edge of the optical element, such that the substance penetrates each cell. Optionally, the cells may be sealed with a film (30) fixed on the partition walls (11) of the cells. The filling and the sealing of the cells may be carried out in a single step of the process.

Transparent electrochromic devices with supply electrodes and polarisation electrodes

composition of photochromic dyes in an ionic solvent

TRANSPARENT ELECTROCHROMIC SYSTEMS WITH MULTIPLE POLARIZATION ELECTRODES

Des systèmes électrochromes transparents (100) comprennent chacun une paire d'électrodes d'alimentation (1, 2) et au moins une paire d'électrodes de polarisation (3, 4). Les électrodes de polarisation évitent qu'une réaction de neutralisation réciproque de substances électroactives des systèmes ne provoque une consommation inutile de courant électrique. Elles évitent aussi que la réaction de neutralisation ne limite une valeur inférieure de transmission lumineuse des systèmes. Pour cela, les électrodes de polarisation produisent un champ électrique (E) à l'intérieur des systèmes, qui attire dans des zones différentes les substances électroactives qui ont déjà réagi sur les électrodes d'alimentation. Transparent electrochromic systems (100) each include a pair of supply electrodes (1, 2) and at least one pair of bias electrodes (3, 4). The bias electrodes prevent a reciprocal neutralization reaction of electroactive substances from the systems from causing unnecessary power consumption. They also prevent the neutralization reaction from limiting a lower value of light transmission of the systems. For this, the polarization electrodes produce an electric field (E) inside the systems, which attracts in different areas the electroactive substances that have already reacted on the feed electrodes.

Crosslinked gel formulation

The present invention relates to a gel medium comprising at least one non-aqueous solvent; a crosslinked polymer resulting from the reaction of : a polyfunctional polymer containing at least two carboxyl moieties capable of undergoing crosslinking reactions, said polyfunctional polymer having a molecular weight from 2,000 g/mol to 3,000,000 g/mol, preferably from 10,000 to 1,000,000 g/mol, more preferably from 25,000 g/mol to 400,000 g/mol and a crosslinking agent chosen from a polycarbodiimide or a polyaziridine.

Composition comprising photochromic dyes in an ionic solvent

A photochromic composition that is liquid at 20 °C and includes (a) at least one photochromic dye and (b) an ionic solvent selected from (b)(i) room-temperature ionic liquids (RTIL), (b)(ii) ionic liquid mixtures that are liquid at room temperature, and (b)(iii) room-temperature liquid mixtures of at least one ionic liquid and at least one organic solvent that is miscible therewith. The use of said photochromic composition in optical devices such as ophthalmic lenses is also described.

Ophthalmic lens having a holographic mirror on a low-birefringence base lens

The present disclosure relates to an ophthalmic lens, comprising: - a base lens (10) comprising at least a layer (11) of low-birefringence material and at least one holographic component (20) recorded on a surface of the layer of low-birefringence material, and - an auxiliary lens (30), assembled to the base lens (10). The present disclosure also relates to a method for manufacturing such ophthalmic lens.

Range-based control of the transmission of a variable transmission lens

The invention relates to a variable transmittance device (2) including at least one variable transmittance lens (4) and a control circuit (5) comprising at least one sensor (8) suitable for measuring an illuminance (E), the control circuit (5) being suitable for automatically controlling the value of the transmittance of the variable transmittance lens (4) depending on the illuminance (E) measured by the sensor (8), wherein the control circuit (5) defines a plurality of successive illuminance ranges (P) each illuminance range (P) being bounded by a minimum illuminance value (Emin) and a maximum illuminance value (Emax), and wherein the control circuit (5) is suitable for controlling the transmittance of the lens (4) to a plurality of setpoint transmittance values (Tv) respectively corresponding to said plurality of illuminance ranges (P).

Electrochromic solution

The present invention relates to an electrochromic solution and a use thereof, wherein the said solution comprises: a solvent; a thickening polymer agent having a molecular weight of at least 50,000 g/mol, preferably 200,000 g/mol, more preferably of at least 250,000 g/mol; at least an additive having a molecular weight between 300 and 50,000 g/mol, preferably between 320 and 20,000 g/mol; a redox chemical mixture in solution in said solvent said mixture being constituted of at least one electrochromic reducing compound and at least one electrochromic oxidizing compound, and which colors in the presence of an applied voltage and which bleaches to a colorless condition in the absence of an applied voltage. The invention further relates to a device comprising said solution.

Ophthalmic device with an electrochromic cell

Transparent electrochromic systems with a plurality of polarisation electrodes

The invention relates to transparent electrochromic systems (100) which each include one pair of supply electrodes (1, 2) and at least one pair of polarisation electrodes (3, 4). The polarisation electrodes prevent a reaction of mutual neutralisation of the electroactive substances of the systems from causing unnecessary consumption of electric current. Said electrodes also prevent a neutralisation reaction from limiting a lower value of light transmission of the systems. For this purpose, the polarisation electrodes produce an electric field (E) inside the systems, which attracts the electroactive substances that have already reacted with the supply electrodes to different areas.

Electrochromic solution

The present invention relates to an electrochromic solution and a use thereof, wherein the said solution comprises: a solvent; a thickening polymer agent having a molecular weight of at least 50,000 g/mol, preferably 200,000 g/mol, more preferably of at least 250,000 g/mol; at least an additive having a molecular weight between 300 and 50,000 g/mol, preferably between 320 and 20,000 g/mol; a redox chemical mixture in solution in said solvent said mixture being constituted of at least one electrochromic reducing compound and at least one electrochromic oxidizing compound, and which colors in the presence of an applied voltage and which bleaches to a colorless condition in the absence of an applied voltage. The invention further relates to a device comprising said solution.

Protective layers for transparent conductive oxide electrodes in electrochromic devices

The invention relates to an electrochromic cell comprising a chamber comprising an electrochromic formulation, and at least two electrodes that are part of the same electrochemical cell and that consist in conducting material deposited on the inner surface of the chamber, wherein at least one of the electrodes comprises a layer of a transparent conductive oxide and a layer comprising a conductive polymer, said layer comprising a conductive polymer being the only part of the at least one electrode that is in contact with the electrochromic formulation.

Electrochromic composition

Composición electrocrómica que comprende: - al menos un compuesto reductor; y - al menos dos compuestos oxidantes electrocrómicos; en la que dichos compuestos oxidantes electrocrómicos tienen potenciales de oxido-reducción similares; y se seleccionan de derivados de viológeno de fórmula (I) y (II):**Fórmula** en las que - R1 y R2 se seleccionan, cada uno independientemente, de grupos fenilo opcionalmente sustituidos; - R3, R4, R5 y R6 se seleccionan, cada uno independientemente, de H, alquilo, alcoxi, alquiltio, haloalquilo, haloalcoxi, haloalquiltio, poliaquilenoxi, alcoxicarbonilo, arilo, arilo sustituido, heteroarilo y heteroarilo sustituido, en los que el grupo alquilo puede estar sustituido con uno o más sustituyentes seleccionados independientemente de alcoxi, cicloalquilo, arilo, arilo sustituido, heteroarilo y heteroarilo sustituido; - n, p, q y r son, cada uno independientemente, un número entero de 0 a 4, en los que, cuando n, p, q o r son dos o más, cada uno de los R3, cada uno de los R4, cada uno de los R5 o cada uno de los R6 pueden ser idénticos o diferentes; - A y B se seleccionan respectivamente de nitrógeno y -N+(R7a)-, y de nitrógeno y -N+(R7b)-, en los que R7a y R7b se seleccionan independientemente de: - alquilo que puede estar sustituido con uno o más grupos seleccionados independientemente de halógeno, alcoxi, cicloalquilo, vinilo, alilo, arilo, arilo sustituido, heteroarilo y heteroarilo sustituido; - arilo y heteroarilo que pueden estar sustituidos ambos con uno o más grupos seleccionados independientemente de: - halógeno, ciano, nitro, alquilo, haloalquilo, arilalquilo, cicloalquilo, cicloalquilalquilo y heterocicloalquilalquilo, alquenilo, alquinilo, alilo, vinilo, arilo, arilo sustituido, heteroarilo, heteroarilo sustituido, -N(arilo)2, -N(arilo)CO(arilo), -CO-arilo y -CO-arilo sustituido; - -OR8, -SR8, -S(O)R8, -S(O2)R8, -S(O2)NR8R9, -NR8R9, -NR8COR9, -NR8CO(aril), -NR8arilo, - CH2OR8, -CH2SR8, -CH2R8, -CO-R8 y -CO2R8, en los que R8 y R9 ...

METHOD FOR MANUFACTURING PLASTIC ANTI-UV FILM WITH NON-UNIFORM SPATIAL DISTRIBUTION OF UV ABSORBER AND OPTICAL PHOTOCHROMIC ELEMENTS COATED WITH SUCH A PLASTIC FILM

Composition comprising photochromic dyes in an ionic solvent

Producing a transparent optical element comprising a substance contained in cells

The invention concerns a method for producing a transparent optical element (1) including filling cells (10) of the element with a substance having an optical property. It consists in moving an amount of the substance (20) radially on the cells, towards a peripheral edge of the optical element, such that the substance penetrates each cell. Optionally, the cells may be sealed with a film (30) fixed on the partition walls (11) of the cells. The filling and the sealing of the cells may be carried out in a single step of the process.

photochromic optical article, method for making a photochromic article and method for making such a photochromic optical article

artigo ótico fotocrômico compreendendo um revestimento fotocrômico saturado e uma radiação uv de absorção de filme a invenção se refere a um artigo ótico fotocrômico com dependência térmica reduzida , compreendendo (a) um substrato transparente ; (b) uma camada fotocrômica saturada tendo, no estado ativado e a uma temperarua de 20 <198>c, um fator de transmissão relativa de menor do que 1% na faixa visível (tv), e (c) um revestimento anti-uv de material plástico cobrindo pelo menos parcialmente a camada fotocrômica saturada, o dito revestimento anti-uv contendo pelo menos um agente que absorve radiação uv (agente anti-uv) e é distribuído em um padrão consistindo de uma profusão de pontos , cada um tendo uma área de superfície de menos do que 0,15mm^ 2^, a distância média entre os pontos para a área de superfície total do revestimento anti-uv sendo o modo que o fator de transmissão relativa do artigo ótico ba faixa visível no estado ativado e a 20 <198>c é pelo menos igual a 5%. a invenção refere-se também a dois métodos para fabricar tal artigo ótico. photochromic optical article comprising a saturated photochromic coating and a film-absorbing UV radiation the invention relates to a photochromic optical article with reduced thermal dependence, comprising (a) a transparent substrate; (b) a saturated photochromic layer having, in the activated state and at a temperature of 20 <198> c, a relative transmission factor of less than 1% in the visible range (tv), and (c) an anti-UV coating of plastic material covering at least partially the saturated photochromic layer, said anti-uv coating containing at least one agent that absorbs uv radiation (anti-uv agent) and is distributed in a pattern consisting of a profusion of dots, each having a surface area of less than 0.15mm ^ 2 ^, the average distance between the points to the total surface area of the anti-UV coating being the mode that the relative transmission factor of the optical article b the visible ...

Optical article

Active optical filter for spectacle lenses

Active optical filter adapted for a spectacle lens, the active optical filter being configured so as to filter light radiations over at least one predetermined range of wavelengths, wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.

Method for obtaining a material comprising a liquid crystal mix with a stabilized blue phase and optical article comprising this material

The invention relates to a method for obtaining a material (10) comprising mesogenic compounds (101 ) forming a liquid crystal mix with a stabilized blue phase (100), comprising the following steps: a) preparing a chemical composition comprising a mesogenic system and a chemical photo-initiator system, the mesogenic system including - said mesogenic compounds forming the liquid crystal mix, - a chiral dopant adapted to induce said blue phase, and - a monomer mix comprising monomers adapted to polymerize, and the chemical photo-initiator system being adapted to trigger the polymerization of said monomers when illuminated by a light beam of visible wavelength; b) getting said liquid crystal mix to form said blue phase; c) after getting said liquid crystal mix into said blue phase, illuminating the chemical composition obtained in step a) with a light beam of visible wavelength in order to trigger the polymerization of said monomers; d) obtaining said material comprising said liquid crystal mix in the blue phase stabilized by the polymerized monomers.

A method of controlling a programmable lens device

A method of controlling a programmable lens device comprising a programmable lens and an optical function controller, the programmable lens having an optical function and extending between at least one eye of the wearer and the real world scene when the device is used by the wearer, and the optical function controller being arranged to control the optical function of the programmable lens, the method comprising: an optical function data receiving step during which optical function data relating to the optical function of the programmable lens is received by the optical function controller, an optical function modifying step during which the optical function of the programmable electronic lens device is modified by the optical function controller based on the optical function data.

Set of semi-finished lenses with holographic components

Aa method for manufacturing a set of semi-finished lenses and a lens from a semi-finished lens of the set and a set of semi-finished lenses each intended to be used in the manufacturing of a finished lens of determined target power, each semi-finished lens having a base curve chosen among a number N of base curves, wherein each base curve is associated to a respective range of powers of finished ophthalmic lenses to be manufactured, and each semi-finished lens of the set comprises a recorded holographic component, wherein the holographic components of the set exhibit a limited number of configurations, and each holographic component configuration is associated exclusively to one base curve among the N base curves.

Commande par palier de la transmission d'un verre à transmission variable

Equipement ophtalmique; procédé d'alimentation d'un équipement ophtalmique

Protective layers for transparent conductive oxide electrodes in electrochromic devices

The invention relates to an electrochromic cell comprising a chamber comprising an electrochromic formulation, and at least two electrodes that are part of the same electrochemical cell and that consist in conducting material deposited on the inner surface of the chamber, wherein at least one of the electrodes comprises a layer of a transparent conductive oxide and a layer comprising a conductive polymer, said layer comprising a conductive polymer being the only part of the at least one electrode that is in contact with the electrochromic formulation.

Dispositif ophtalmique comprenant une lentille ophtalmique pour lunette et une pluralite de composants electroniques

L'invention concerne une lentille ophtalmique pour lunette et une pluralité de composants électroniques disposés sous forme d'au moins une bande au contact et en périphérie de ladite lentille ophtalmique. Equipement ophtalmique comprenant au moins une monture et au moins un tel dispositif ophtalmique.

Lens element comprising an activable optical element

A lens element intended to be worn in front of an eye of a wearer having a first optical function, and comprising at least one activable optical element, wherein in a first state the at least one activable optical element contributes with the rest of the lens to focus the image of an object at distance on the retina of the wearer, and in a second state the at least one activable optical element has a second optical function of scattering light so as to slow down the progression of the abnormal refraction of the eye.

A method of controlling a programmable lens device

A method of controlling a programmable lens device

活性化可能光学フィルタを含む眼鏡レンズ及びそのような眼鏡レンズを含む光学機器

【課題】改良された活性化可能光学フィルタを含む眼鏡レンズを提供する。【解決手段】本発明は、少なくともエレクトロクロミック素子を含むと共に少なくとも３種類の構成間で能動的に切り替え可能に構成されている活性化可能光学フィルタを含む眼鏡レンズに関し、－第１の構成において、活性化可能光学フィルタは均一であり、－第２の構成において、活性化可能光学フィルタは局所光源からの光を選択的に減衰させ、－第３の構成において、活性化可能光学フィルタは均一であり、－各構成間の色度差ΔＣｈｒｏｍは２０以下である。【選択図】図１

Protective layers for transparent conductive oxide electrodes in electrochromic devices

An electrochromic cell including a chamber including an electrochromic formulation, and at least two electrodes that are part of the same electrochemical cell and that include a conducting material deposited on the inner surface of the chamber. At least one of the electrodes includes a layer of a transparent conductive oxide and a layer including a conductive polymer, the layer including a conductive polymer being the only part of the at least one electrode that is in contact with the electrochromic formulation.

Optical article

An optical article that includes an ophthalmic lens that includes a substrate, a first layer comprising liquid crystals being disposed on at least part of the substrate, and a first and a second electrode made of a conductive material, and a voltage source electrically connected to the first and second electrodes and configured to control an orientation of the liquid crystals depending on the voltage applied. The ophthalmic lens further includes a second layer made of photoconductive material placed between the electrodes, and the optical article further includes a light projector configured to project a light pattern on the second layer of the ophthalmic lens, the second layer being locally conductive when illuminated by the light pattern, the light pattern corresponding to a pattern of refractive index modification to be induced by the liquid crystals of the first layer.

Optical article

Optical article (1) comprising: - an ophthalmic lens (3) comprising: - a substrate (31), - a first layer (33) comprising liquid crystals being disposed on at least part of the substrate (31), - a first and a second electrode (32, 35) made of a conductive material, - a voltage source (5) electrically connected to the first and second electrodes (32, 35) and configured to control an orientation of the liquid crystals depending on the voltage applied, wherein: - the ophthalmic lens (3) further comprises a second layer (34) made of photoconductive material placed between the electrodes, and - the optical article (1) further comprises a light projector (5) configured to project a light pattern on the second layer (34) of the ophthalmic lens (3), said second layer (34) being locally conductive when illuminated by the light pattern, said light pattern corresponding to a pattern of refractive index modification to be induced by the liquid crystals of the first layer (33).