Essilor International

Essilor International (compagnie Generale D'optique)

Centre National De La Recherche Scientifique

Essilor International (compagnie General D'optique)

Centre National De La Recherche Scientifique-cnrs

Jerome Ballet

Jean-Paul Cano

Samuel Archambeau

David Escaich

Stephane Perrot

Claudine Biver

Christian Bovet

Willy Chaudat

Aude Bouchier

Loic Quere

Sylvie Vinsonneau

Fabien Berit Debat

Cyril Guilloux

Coralie Barrau

Denis Rousseau

Benoit Callier

Anthony Saugey

Romain Fayolle

Denis Cohen Tannoudji

Pierre Chavel

Frederic Arrouy

Paul Lefillastre

Gilles Mathieu

Pascal Etienne

Vincent Yquel

Jean-Jacques Lussagnet

Florent Deliane

Marjorie Llosa

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 &#x394;Chrom between each of the configurations is smaller than or equal to 20.

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

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.

Spectacle lens comprising an activable optical filter

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 device with selective membrane

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.

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

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.

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

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 (AA).

Ophthalmic device with improved amplitude variation 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.

Ophthalmic device comprising an electrochromic cell

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.

Management system and method of an active lens

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: &#x2014;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, &#x2014;an activity data receiving step during which activity data relating to the activity of the wearer are received by the optical function controller, &#x2014;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.

Method of controlling a programmable lens device

The invention relates to a photo-crosslinkable composition obtainable by a method comprising: (a) the hydrolysis and condensation reaction of a [(epoxycycloalkyl)alkyl]trialkoxysilane in solution in an organo-aqueous medium as described in specification to obtain a solution of an organo-mineral hybrid prepolymer, in which the totality or quasi-totality of the alkoxysilane groups has been hydrolysed, and which comprises in average at least 4 (epoxycycloalkyl)alkyl groups; (b) cooling the obtained polyepoxide prepolymer composition as described in specification: (c) adding to said composition at least one cationic-polymerisation photo-photoinitiator and at least one specific photosensitiser as describes in specification and adding a surfactant; (d) agitating the obtained composition as described in specification thus obtained; (e) filtering the obtained composition as described in specification thus obtained; and (f) storing the obtained liquid filtrate as described in specification thus obtained. The invention also relates to the a photocrosslinkable composition as a negative photosensitive resin in a photolithography process.

Method for preparing a photo-crosslinkable composition

A transparent optical component comprises two sets of cells () disposed in respective superposed layers (). Each cell () contains an optically active material, and the cells in each set are isolated from one another by separating portions () within the corresponding layer. The cells () of one layer are offset relative to the cells of the other layer so as to be located in line with the separating portions () pertaining to the other layer. Such optical component exhibits transparency that is improved compared with components having a single layer of cells or cells that are superposed.

Optically transparent component with two sets of cells

A transparent optical component () comprises at least one transparent set of cells () juxtaposed parallel to a surface of the component, each cell being separated by walls () parallel to the component surface, hermetically sealed and containing at least one substance having an optical property, and at least one absorbing coating (), placed on the walls on one side extending parallel to said component surface. The optical component can be cut out along a predefined contour and optionally drilled. The invention also comprises a method for producing such optical component and its use for producing an optical element. The optical element may be a spectacle lens in particular.

Pixellized transparent optical component comprising an absorbing coating, production method thereof and use thereof in an optical element

A transparent optical component () comprises at least one transparent set of cells () juxtaposed parallel to one surface of the component, each cell being separated by absorbing walls () parallel to the component surface, and each cell being hermetically sealed and containing at least one substance with an optical property. The optical component may be cut out along a predefined contour and optionally drilled. The invention also relates to a method of producing such an optical component and its use for the production of an optical element. The optical element may especially be a spectacle lens.

Transparent pixelized optical component with absorbing walls, its method of manufacture and its use in the manufacture of a transparent optical element

An optical component () comprises a transparent set of cells () juxtaposed in parallel to a surface of the component. Each cell is hermetically sealed and contains a substance with an optical property. The set of cells comprises cells of several sizes. The size of the cells can be varied between various locations of the surface of the component (), for making it possible to cut out the component without altering its optical properties. Furthermore, the variation in size of the cells serves to prevent diffraction or scattering from being visible in certain zones of the component.

Optical component with cells

An optical component comprises a transparent network of cells juxtaposed and separated by walls parallel to a surface of the component, each cell being hermetically sealed and comprising at least one substance with an optical property, and all or part of the surface of said component comprises walls less than 100 nm thick. The optical component is thus pixelized by a cell network, the cells being separated by walls which may themselves be pixelized. Such an optical component is particularly useful for making optical elements such as ophthalmic lenses.

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Charenton le Pont, France

Jerome Ballet