Essilor International

Essilor International (compagnie Generale D'optique)

Essilor International (compagnie General D'optique)

Essilor International (compagnie Generale D' O{circumflex Over (p)}tique)

Isabelle Poulain

Benjamin Rousseau

Laurent Calixte

Guilhem Escalier

Thierry Bonnin

Delphine Tranvouez-Bernardin

Cyril Guilloux

Konogan Baranton

Cécile Petignaud

Nacer Lakhchaf

Juliette Wierzbicki

Valerie Jolivet

Ahmed Haddadi

Gildas Marin

Guillaume Giraudet

Fabien Divo

Aude Contet

Damien Paille

Sebastien Fricker

Marie-Anne Berthezene

Soazic Mousset

Melanie Heslouis

Sebastien Gayat

Loic Levraud

Björn Drobe

Gilles Le Saux

Pascal Allione

Bruno Fermigier

Sarah Marie

Philippe Pinault

Sébastien Fricker

Bruno Decreton

Jean-Luc Perrin

Francoise Ahsbahs

Farid Karioty

Amandine Debieuvre

Laurent Roussel

Alain Goulet

Delphine Tranvouez

Clotilde Haro

Mélanie Heslouis

Stéphanie Vialet

Stephanie Vialet

Valérie Jolivet

Sébastien Gayat

Loïc Levraud

Beanjamin Rousseau

Françoise Ahsbahs

A device for determining a head freedom area of an optical lens adapted for a wearer looking at a specific point in a scene through the optical lens comprises at least one input adapted to obtain optical lens data representing the optical features of an optical lens, to obtain wearing data and fitting data representative of the wearing conditions and fitting parameters of the optical lens, and to obtain a specific threshold value for an optical performance criterion; and at least one processor configured for determining the head freedom area that corresponds to the head positions of the wearer that provide optical performances greater than or equal to the specific threshold value when the wearer is wearing the optical lens in given wearing conditions upon given fitting parameters and looking at the specific point in the scene through the optical lens.

Head freedom area of an optical lens

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.

Optical device adapted to be worn by a wearer

The invention relates to a method for determining a progressive ophthalmic device for personalised visual compensation for an individual, according to which the following steps are performed: a) in a first data acquisition phase, determining at least at a first time preceding the appearance of the presbyopia of this individual, at least one value of at least one individual parameter of said individual, and recording each value of the individual parameter of the wearer in a database, in correlation with an associated temporal indicator, b) in a second determination step of the progressive ophthalmic device for personalised visual compensation, determining a desired value of at least one geometric or optical parameter of said progressive ophthalmic device for visual compensation, taking account of said at least one value of the individual parameter determined in step a) and the associated temporal indicator.

Method for determining a progressive ophthalmic device for personalised visual compensation for an individual

A method for determining an ophthalmic lens adapted to a wearer, including: providing wearer data including at least an indication of a prescription of the wearer; providing a locomotion scenario including at least an input locomotion parameter and visual environment data indicative of a visual environment, the locomotion parameter including at least movement data indicative of at least translation movements of the wearer's head; providing an output parameter of a locomotion parameter of the wearer or an optical parameter of the ophthalmic lens having an impact on a locomotion parameter of the wearer; determining an ophthalmic lens adapted to the wearer based at least on the wearer data to have the output parameter as close as possible to the target value of the output parameter when carrying out the locomotion scenario using the ophthalmic lens, wherein the output parameter is retinal flow of the wearer.

Method for determining an ophthalmic lens adapted to a locomotion parameter

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

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 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, implemented by a computer, for determining a lens design of an optical lens adapted to a wearer, the method including: providing a wearer parameter; a lens design determining, during which the lens design of the optical lens adapted to the wearer is determined based at least on the wearer parameters. The wearer parameters include at least optical distortion sensitivity data representative of sensitivity of the wearer to optical distortions.

Method for determining a lens design of an optical lens adapted to a wearer

A quality control method for optometric measurements includes the following steps: (a) recording, via computer, a first record () that includes at least one first value of a first identifier (), enabling identification of a glasses wearer (), and at least one other value of another identifier () enabling identification of an optometric apparatus () on a first optometric measuring site (); (b) carrying out at least one optometric measurement () of the wearer; (c) sending, to a second site (), a digital measurement data set () including the optometric measurement result from step (b), the digital data set being linked, via computer, to the first record; and (d) digitally processing the optometric measurement result from the first record () on the basis of a digital data reference system () and the values of the respective identifiers of the glasses wearer and the optometric apparatus of the first record.

Quality control method for optometric measurements

A method for determining at least one value of a customization parameter for a visual compensation device includes the following steps: a) a user () equipped with an electronic terminal () captures at least one image or video sequence; b) telecommunicating the at least one image to a remote-support center (); c) processing the at least one image in order to derive therefrom an instruction to correct or validate the captured image or video sequence; d) telecommunicating the correction or validation instruction from the remote-assistance center () to the terminal () of the user (); e) displaying or emitting an audio or video message using the terminal; f) repeating the preceding steps until a validated image or video sequence is obtained; g) determining a value of the at least one customization parameter.

Method for determining at least one value of a parameter for customising a visual compensation device

A process for determining a pair of personalized progressive ophthalmic lenses. and a computer program product associated to these processes. Right-handed persons and left-handed persons behave very differently when executing certain near vision tasks, such as writing on a sheet of paper. However, current lens designs do not take into account these behavior differences. The comfort of wearing a pair of ophthalmic lenses can be improved for the wearer for whom the lenses are intended by adapting his near vision according to his handedness.

Process for determining a pair of progressive ophthalmic lenses

The invention relates to a method for determining an ophthalmic lens for a person (i.sub.1, i.sub.2, i.sub.3) to wear said lens, comprising the following steps: i) determination of the size (T.sub.1, T.sub.2, T.sub.3) or height of the eyes (H.sub.1, H.sub.2, H.sub.3) of the person to wear the lens; and ii) calculation of at least one characteristic of the ophthalmic lens according to the size (T.sub.1, T.sub.2, T.sub.3) or the height of the eyes (H.sub.1, H.sub.2, H.sub.3) of the person to wear the lens. The ophthalmic lens can be progressive strength or unifocal. The invention also relates to an optimization method and a method for producing an ophthalmic lens implementing such a definition method. The invention further relates to a set of lenses having at least one characteristic that depends on the size and the height of the eyes of the person to wear the lens.

Method for determining, optimizing and producing an ophthalmic lens and set of ophthalmic lenses

Growing community of inventors

Charenton-le-Pont, France

Isabelle Poulain