Essilor International

Essilor International (compagnie Generale D'optique)

Essilor Intl. (compagnie Generale D'optique)

Essilor International (compagnie General D'optique)

Centre National De La Recherche Scientifique

Benjamin Rousseau

Isabelle Poulain

Guilhem Escalier

Thierry Bonnin

Sebastien Fricker

Konogan Baranton

Melanie Heslouis

Fabien Divo

Renaud Moliton

Nacer Lakhchaf

Gildas Marin

Cécile Petignaud

Marie-Anne Berthezene

Sébastien Fricker

Juliette Wierzbicki

Valerie Jolivet

Cyril Guilloux

Ahmed Haddadi

Matthieu Guillot

Coralie Barrau

Bruno Fermigier

Damien Paille

Sarah Marie

Pauline Colas

Jean Taboury

Delphine Tranvouez-Bernardin

Sylvain Perrot

Pedro Ourives

Loic Levraud

Sebastien Gayat

Thibault Brossier

Mathieu Guillot

Raymond Mercier

Laurent Calixte

Jean Sahler

Marius Peloux

Aude Contet

Thierry Villette

Martha Hernandez-Castaneda

Jean-Luc Perrin

Martha Hernandez

Vincent Roptin

Cécile Pietri

Cédric Buchon

Farid Karioty

Nicolas Lavillonniere

Amandine Debieuvre

Cécile Bonafos, Legal Representative

Antoine Videmann

Thierry Laloux

Mélanie Heslouis

Gilles Garcin

Valérie Parmentier

Laurent Berthelot

Gérard Gelly

Stéphanie Vialet

Nicolas La Villonniere

Stephanie Vialet

Valérie Jolivet

The invention relates to a method for determining at least an optical feature of an ophthalmic lens to be placed in a frame for vision correction of a subject, comprising: a) measuring () a value of a fitting parameter linked to the subject and/or the frame or a value of a dioptric parameter of the subject, thanks to a measurement process, b) providing () a level of uncertainty of said value measured in step a) depending on said measurement process, c) determining () said optical feature of said ophthalmic lens by taking into account said value measured in step a) and said level of uncertainty provided in step b).

Method and device for determining at least an optical feature of a progressive lens to be placed in a frame for vision correction of a subject

An optical device including an active programmable lens having an adjustable optical power depending on a prescription of a wearer and being relative to a vision distance and/or direction of an eye of the wearer, a vision sensor adapted to measure vision data relating to the vision distance and/or direction of the eye, and an optical power controller that includes a memory storing computer executable instructions and adapted to store measured vision data and two predetermined optical power states corresponding to an optical power relative to a range of vision distance and/or direction of the eye, and a processor for executing the stored computer executable instructions, which include instructions for adjusting the adjustable optical power between the predetermined optical power states with a resolution smaller than or equal to 0.25 D when the vision data passes from one range of vision distance and/or direction to another.

Optical device adapted to be worn by a wearer

The invention relates to an optical device () adapted to be worn by a wearer comprising at least: &#x2014;a programmable lens () having an adjustable optical function and extending between at least one eye of the wearer and the real world scene when the optical device is worn by the wearer, &#x2014;an optical function controller () comprising &#x2014;a memory () storing at least computer executable instructions; and &#x2014;a processor () for executing the stored computer executable instructions so as to control the optical function of the programmable lens (), wherein the computer executable instructions comprise instructions for adjusting the optical function of the programmable lens () over a period of time determined so that the wearer does not perceive the adjustment of the optical function.

Disclosed is a method for measuring the refraction of an individual by a refraction measuring appliance, including: an initial step of determining at least one initial value of a visuo-postural parameter of the individual; a step of processing the initial value in order to deduce at least one initial value of a regulating parameter of the refraction measuring appliance, the regulating parameter being associated with the visuo-postural parameter; a step of regulating the refraction measuring appliance according to the initial value of the regulating parameter; and a step of measuring the refraction of the individual by the measuring appliance regulated in this way. Also disclosed is a method for the optical design of an ophthalmic lens, and to a pair of glasses including such a lens.

Method and system for measuring refraction, method for the optical design of an ophthalmic lens, and pair of glasses comprising such an ophthalmic lens

An ophthalmic progressive addition lens for a farsighted and presbyopic wearer having a mean refractive power, PPO(&#x3b1;, &#x3b2;), a module of resulting astigmatism, ASR(&#x3b1;, &#x3b2;), an acuity loss value ACU(&#x3b1;, &#x3b2;), wherein the (&#x3b1;, &#x3b2;) functions are determined in as-worn conditions of the lens by the wearer, and a first acuity criterion, AcuityCriterion1 which fulfils following requirement: AcuityCriterion1&#x2265;44 D.deg, and wherein: AcuityCriterion1 is defined as a combination of PPO(&#x3b1;, &#x3b2;), ASR(&#x3b1;, &#x3b2;), ADD, and ACU(&#x3b1;, &#x3b2;).

Ophthalmic progressive addition lens for a farsighted and presbyopic wearer; method for providing such a lens

A method for determining a three dimensional performance of an ophthalmic lens including: calculating a domain in which a condition between a local optical criterion and at a threshold value is fulfilled; determining the three dimensional performance of the ophthalmic lens according to the domain. A method of calculating an ophthalmic lens includes the method.

Method for determining a three dimensional performance of an ophthalmic lens; associated method of calculating an ophthalmic lens

A method for determining an optical system of a personalized progressive lens for a given wearer including: a) providing a mean direction of gaze determined for the wearer in a reference frame tied to the head of the wearer; b) determining a target value for at least one optical design parameter as a function of the mean direction of gaze determined in a); c) calculating the optical system of the progressive lens by an optical optimization procedure on the basis of target values, wherein the target value of each optical design parameter as a function of the mean direction of gaze determined in b) is a target value.

Method for determining an optical system of a progressive lens

A device for testing visual behavior of a person, including: an active display configured to display at least one visually predominant target in a plurality of positions that are variable over time and that are aligned along at least one line or column, and a unit for controlling the display. The unit is programmed so that consecutive display positions of the target follow, over time, a visual tracking protocol.

Device for testing the visual behavior of a person, and method for determining at least one optical design parameter of an ophthalmic lens using such a device

An ophthalmic progressive addition lens for a myopic and presbyopic wearer having a mean refractive power, PPO(&#x3b1;, &#x3b2;), a module of resulting astigmatism, ASR(&#x3b1;, &#x3b2;), an acuity loss value ACU(&#x3b1;, &#x3b2;), wherein the (&#x3b1;, &#x3b2;) functions are determined in as-worn conditions of the lens by the wearer, and a first acuity criterion, AcuityCriterion1 which fulfils following requirement: AcuityCriterion1&#x2265;1340 D&#xb7;deg, and wherein: AcuityCriterion1 is defined as a combination of PPO(&#x3b1;, &#x3b2;), ASR(&#x3b1;, &#x3b2;), ADDp, and ACU(&#x3b1;, &#x3b2;).

Ophthalmic progressive addition lens for a myopic and presbyopic wearer and method for providing same

An ophthalmic progressive addition lens for an emmetropic and presbyopic wearer having a mean refractive power, PPO(&#x3b1;, &#x3b2;), a module of resulting astigmatism, ASR(&#x3b1;, &#x3b2;), an acuity loss value ACU(&#x3b1;, &#x3b2;), wherein the (&#x3b1;, &#x3b2;) functions are determined in as-worn conditions of the lens by the wearer, and a first acuity criterion, AcuityCriterion1 which fulfils following requirement: AcuityCriterion1&#x2265;435 D.deg, and wherein: AcuityCriterion1 is defined as a combination of PPO(&#x3b1;, &#x3b2;), ASR(&#x3b1;, &#x3b2;), ADD, and ACU(&#x3b1;, &#x3b2;).

Ophthalmic progressive addition lens for an emmetropic and presbyopic wearer and method of providing same

An ophthalmic progressive addition lens for a presbyopic wearer which has a prescribed far vision mean refractive power a non nil prescribed addition, ADD, the lens having a far vision reference point, a mean refractive power, PPO(&#x3b1;, &#x3b2;), a module of resulting astigmatism, ASR(&#x3b1;, &#x3b2;), a meridian line, ML(&#x3b1;, &#x3b2;), the (&#x3b1;, &#x3b2;) functions being determined in as-worn conditions of the lens by the wearer for gaze directions (&#x3b1;, &#x3b2;) joining the center of rotation of the eye, CRE, and the lens, wherein &#x3b1; is a lowering angle in degree and &#x3b2; is an azimuth angle in degree, and wherein &#x3b1; lens criterion, CRIT, fulfils following requirement: 0.38&#x2264;CRIT&#x2264;4.50, where: CRIT=NumeratorCRIT/DenominatorCRIT, NumeratorCRIT=(A1/A2)+(PPO(&#x3b1;, &#x3b2;)/(100&#xb7;ADD)); A1=&#x3b1;100%&#x2212;&#x3b1;85%; A2=&#x3b1;100%&#x2212;&#x3b1;60%; DenominatorCRIT=[(PeaksMean/ADD)+(PPO(&#x3b1;,&#x3b2;)/(8&#xb7;ADD))].

Opthalmic progressive addition lens for a presbyopic wearer; method for providing such a lens

An ophthalmic progressive addition lens for a myopic or emmetropic presbyopic wearer which has a prescribed far vision mean refractive power and a non nil prescribed addition, ADD, the lens having a far vision reference point, a mean refractive power, PPO(&#x3b1;, &#x3b2;), a module of resulting astigmatism, ASR(&#x3b1;, &#x3b2;), a meridian line, ML(&#x3b1;, &#x3b2;), the (&#x3b1;, &#x3b2;) functions being determined in as-worn conditions of the lens by the wearer for gaze directions (&#x3b1;, &#x3b2;) joining the center of rotation of the eye, CRE, and the lens, wherein &#x3b1; is a lowering angle in degree and &#x3b2; is an azimuth angle in degree, and wherein a lens criterion, A1/A2, fulfils: A1/A2&#x2265;0.50, wherein: A1=&#x3b1;100%&#x2212;&#x3b1;85%; A2=&#x3b1;100%&#x2212;&#x3b1;60%.

Ophthalmic progressive addition lens for a myopic or emmetropic presbyopic wearer; method for providing such a lens

Disclosed is a method for determining at least one visual behavior parameter of a person. The method includes the following steps: a step of encouraging the person to perform a visual test during which he observes at least one target position, a step of measuring an item of data that is representative of at least one viewing direction of the person during the visual test, a step of determining a reference viewing direction on the basis of the representative data measured, and a step of positioning, relative to the reference viewing direction, at least one measured target position that is determined, in a reference marker associated with the head of the person, on the basis of the data that is representative of the viewing direction of the person measured during the visual test.

Method for determining a visual behavior parameter of a person, and related testing device

A method of calculating an optical system (OS) of an ophthalmic lens according to a given spectacle frame, said ophthalmic lens comprising a back surface (BS) and a front surface (FS) arranged to deliver an ophthalmic vision image (VI), a light-guide optical element having a proximal surface (PS) and a distal surface (DS), said light-guide optical element being arranged to output a supplementary image (SI), wherein the method comprises the steps of: providing at least a morpho-geometrical parameter data of the frame or of the light-guide optical element; optimizing the optical system (OS) according to at least the morpho-geometrical parameter data as a target.

Method of calculating optical characteristics of an optical system according to a given spectacle frame

The invention relates to the field of management systems and methods of an active device and more particularly, with said active device being an active ophthalmic lens, to a management system and method which allow a total or sufficient protection by taking into account the luminous environment of the wearer while avoiding some effects relative to permanent light filtering. According to a particular embodiment of the invention, there is also provided a monitoring of the wearer's health via active, regulated and continuous control of the active device, this control being performed for instance by a health professional via a remote monitoring system.

Management system and method of an active device

Growing community of inventors

Charenton-le-Pont, France

Benjamin Rousseau