Essilor International

Essilor International (Compagnie Generale D'optique)

Essilor International (Compagnie General D'optique)

Essilor Internaional (Compagnie Générale D'optique)

Centre National De La Recherche Scientifique

Thierry Bonnin

Benjamin Rousseau

Ahmed Haddadi

Isabelle Poulain

Sarah Marie

Guilhem Escalier

Juliette Wierzbicki

Pascal Allione

Laurent Calixte

Nacer Lakhchaf

Valerie Jolivet

Björn Drobe

Gildas Marin

Gilles Le Saux

Jean Sahler

Cécile Petignaud

Bruno Decreton

Melanie Heslouis

Martha Hernandez

Jean Taboury

Sébastien Maurice

Thibault Brossier

Raymond Mercier

Konogan Baranton

Guillaume Giraudet

Fabien Divo

Jérôme Moine

Ludovic Jouard

Sebastien Fricker

Stéphane Gueu

Damien Paille

Carlos Rego

Philippe Pinault

Marie-Anne Berthezene

Bruno Amir

Sébastien Fricker

Sylvain Perrot

Guillaume Broutin

Soazic Mousset

Jean-Luc Perrin

Francoise Ahsbahs

Delphine Tranvouez-Bernardin

Marie-Gaelle Froeliger

Bastien Feret

Laurent Roussel

Bérangère Donetti

Mélanie Heslouis

Maxime Boiffier

Mélanie Tessieres

Nathalie Bar

Patricia Koh

Alvin François

Pierre Rouault De Coligny

Marc Lerenard

Melanie Tessiere

Lucie Ernoult

Valérie Jolivet

A method for determining a value of at least one geometrico-morphological parameter of a subject wearing an eyewear. The method including obtaining at least one image of a head of the subject wearing the eyewear, identifying simultaneously, on the at least one image obtained, a set of remarkable points of the image of the eyewear and a set of remarkable points of the image of the head of the subject, using an image processing algorithm determined based on a predetermined database comprising a plurality of reference images of heads wearing an eyewear, the image processing algorithm being based on machine learning, and determining at least one value of a geometrico-morphological parameter taking into account the sets of remarkable points of the image of the eyewear and head of the subject identified.

Geometrico-morphological parameter of a subject wearing an eyewear

The present disclosure relates to a method for expanding an image database for evaluation of eyewear compatibility. In particular, the present disclosure relates to a method, comprising receiving a user image, receiving a frame image, processing the received frame image by setting, as transparent, pixels of the received frame image except for an anterior face of the frame, defining, within the processed frame image, a left boundary and a right boundary of the anterior face of the frame, the left boundary and the right boundary corresponding to the left eye and the right eye, respectively, receiving a filter image, processing the received filter image by setting, as transparent, pixels in the received filter image outside the frame based on the left boundary and the right boundary, merging the processed frame image and the processed filter image, and overlaying the merged image onto the received user image.

Apparatus, method, and computer-readable storage medium for expanding an image database for evaluation of eyewear compatibility

Disclosed is a method for determining a parameter of an optical equipment including an optical lens including permanent markings and being mounted in a spectacle frame, including: positioning the optical equipment is before a pattern in a first position; positioning a portable electronic device including an image acquisition module in a second position so as to acquire an image showing together the pattern seen through at least part of the optical lenses of the optical equipment in the first position and at least part of the spectacle frame of the optical equipment in the first position; detecting the permanent marking on the optical lens using the image acquired by the image acquisition module of the portable electronic device in the second position; and determining at least one parameter of the optical equipment based on the position of the permanent marking.

Method for determining a parameter of an optical equipment

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

Disclosed is a method for determining at least one fitting parameter of an optical equipment configured to equip a user, the method including: providing an imaging device; taking a plurality of images of the user equipped with the optical equipment when the user takes successively at least two distinct positions; among the at least two distinct positions, identifying at least one period when the user is in a favorable position to determine the at least one fitting parameter, wherein the at least one period is manually identified by an operator; recording the at least one identified period and at least one image taken during the at least one identified period; determining the fitting parameter on the basis of the at least one recorded image.

Method and system for determining fitting parameters of an optical equipment with manual identification

Disclosed is a method for determining an updated visual correction need for designing a new vision correcting device of an individual already having a previous vision correcting device previously designed to correct his/her vision, wherein, in a first step, a previous level of correction of the previous vision correcting device is acquired, in a second step, a current vision acuity parameter of the individual wearing the previous vision correcting device is assessed, and, in a third step, the updated visual correction need is determined based on the previous level of correction of the previous vision correcting device acquired in the first step and on the current vision acuity parameter assessed in the second step. A complementary visual correction need can also be determined.

Method for determining an updated visual correction need for designing a new vision correcting device

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

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

The invention relates to a method () for correcting an individual behavior for using a pair of spectacles in optimized conditions, said individual wearing frame (). According to the invention said method comprises the following steps: &#x2014;a step () of determining parameters that characterize the behavioral conditions of the individual using correcting means securely fastened to the frame of the frame () in the preceding various situations for a set time; &#x2014;a step () of comparing said parameters with preset reference values; and &#x2014;a step () of correcting the behavior of the individual using detecting means () that are securely fastened to the said frame (), and that trigger when the difference between a parameter and the corresponding reference value diverges beyond a preset threshold value.

Method for correcting a wearer behaviour for using a pair of spectacles in optimized conditions

The disclosed embodiments include a method for determining a geometric definition of a piece of personalized optical equipment adapted to its wearer, comprising at least one geometric definition of a personalized frame of this piece of personalized equipment. In one embodiment, the geometric definition of said personalized frame is determined depending on at least one geometric parameter of personalization of the frame and on a reference frame chosen by the wearer. Further, the value of said at least one geometric parameter of personalization of the frame being determined on the basis of the acquisition of data relating to at least one morphological quantity of the head of the wearer, in such a way that the personalized frame is adjusted to conform with a least one criterion of adjustment of personalization of the geometry of the frame with respect to the morphological quantity of the head of the wearer.

Method for determining a geometric definition of a customized optical device

An apparatus for determining the diameter of an ophthalmic compensation lens to be mounted onto a spectacle frame, or for controlling the mounting of an ophthalmic compensation lens onto the frame includes: an electronic tablet having a screen; a spectacle frame support having an opening and being suitable for holding the glasses frame in a predetermined position, one surface of the spectacle frame being placed near the surface of the screen; elements for storing at least one graphic image including at least one graphic reference mark associated with the ophthalmic compensation lens and/or with the patient who is to wear the ophthalmic compensation lens mounted onto the frame; elements intended for processing the image and capable of generating a projected image; elements for displaying the projected image onto the screen; and elements for aligning the frame with regards to the projected image displayed on the screen.

Apparatus, accessory, and method for determining the diameter of a lens to be mounted onto a glasses frame, or for controlling the mounting of a glasses lens onto a glasses frame

Active vision system comprising: first and second customizable ophthalmic lenses () having an electrically variable occultation between substantially transparent and substantially obscured states; identification device () adapted for identifying whether the wearer's viewing state is in a near vision viewing state when wearing the customizable ophthalmic lenses; and processor () configured to: switch the electrically variable occultation of one of the customizable ophthalmic lenses () from the first to the second light occultation states when a near vision viewing state (NVVS) is identified by the identification device while at the same time the other lens is in the transparent state; and control the electrically variable occultation of the customizable ophthalmic lenses () such that they are in the first light occultation state when the wearer's viewing state is identified as being different from a near vision viewing state (NVVS) by identification device ().

Method for improving visual comfort to a wearer and associated active system of vision

A method of visual testing of an individual () includes the steps of: a) placing the individual at a predetermined observation distance (D) from a display surface () at which the individual observes, with a natural head carriage, the display surface; b) displaying, on the display surface, a visual test including at least one test image () in a visual field of the individual; and c) determining, on the display surface, a boundary () of zones of optimal/degraded vision of the test image by the individual in the configuration resulting from steps a) and b), the boundary delimiting respectively a zone of optimal vision (A) and a zone of degraded vision (B) of the visual field, for which zones the individual indicates that he sees the test image of the visual test in an optimal manner, respectively in a degraded manner.

Method of visual testing of an individual and associated device

Disclosed is a method of determining at least one visual behavior parameter of an individual, including: determination of the position of the center of rotation of at least one eye of the individual in a first reference frame tied to the head of the individual; capture, with the aid of an image capture device, of at least one image of at least one part of the body of the individual in a second reference frame, determination of the position and the orientation, in the second reference frame, of the first reference frame tied to the head of the individual, by searching for the position, in the second reference frame of a distinctive zone of the part of the body of the individual; determination of the position of the center of rotation of the eye in the second reference frame; and determination of the sought-after visual behavior parameter.

Method of determining at least one parameter of visual behaviour of an individual

Growing community of inventors

Charenton-le-Pont, France

Thierry Bonnin