Essilor International (compagnie Generale D'optique)

Essilor International (compagnie General D'optique)

Essilor International

Fabien Divo

Benjamin Rousseau

Ahmed Haddadi

Guilhem Escalier

Konogan Baranton

Thierry Bonnin

Isabelle Poulain

Marie-Anne Berthezene

Philippe Pinault

Loic Levraud

Sebastien Gayat

Gildas Marin

Xavier Levecq

Cécile Petignaud

Cédric Lemaire

Christian Joncour

Stephane Boutinon

Laurent Guillermin

Martha Hernandez-Castaneda

Stéphane Boutinon

Pedro Ourives

Laurent Roussel

James Thepot

Christophe Condat

Gaetan Hasbroucq

Sébastien Gayat

Loïc Levraud

Beanjamin Rousseau

Gaétan Hasbroucq

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 measuring at least one geo-morphometric parameter of an individual wearing glasses that includes adjusting the inclination of the image acquisition system so that it lies in an acceptable angular range; adjusting the height of the image acquisition system so that the individual can see the target along a substantially horizontal line of sight; observation of the target, by the individual; acquiring at least one image of the eyes of the individual and of the frame. The method includes processing the at least one image using the processing unit in order to determine each geo-morphometric parameter of the individual from the position of their pupils and the inclination of their glasses and returning the result of the measurements.

Method for measuring morpho-geometric parameters of a spectacle wearing individual

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 device for measuring the objective ocular refraction of a patient for a plurality of visual ranges, which includes a variable proximity optical sight system capable of selectively generating a first target and a second target and an image-capturing device having an optical measurement axis intended for being aligned with a line of sight of the patient, the image-capturing device being capable of capturing a first ocular refraction image when the first target is activated and a second ocular refraction image when the second target is activated. The image-capturing device and the optical sight system are arranged such that the optical measurement axis and the optical sight axis are arranged such that the optical measurement axis and the optical sight axis are contained in a single plane and the optical measurement axis is tilted at an angle alpha between +5 degrees and +85 degrees relative to the horizontal.

Device and method for measuring at least one objective ocular refraction characteristic of a patient for a plurality of visual ranges

Disclosed is a device for measuring ocular refraction and a geometric-morphological parameter of an individual, including: a gaze-stimulating target placed so as to stimulate the gaze of the individual in a posture associated with a proximity value and a sight axis; an illuminating system able to generate at least one illuminating beam in the direction of the eyes of the individual; an image-capturing system; and a computer able to receive at least one first image captured by the image-capturing system. According to the invention, the image-capturing system is able to acquire an image of part of the face surrounding the eyes of the individual, and the computer is able to extract, from the acquired image, a first measurement of a glazing parameter and a first measurement of objective ocular refraction by refraction of the illuminating beam on the eyes of the individual in the given posture.

Device and method for measuring objective ocular refraction and at least one geometric-morphological parameter of an individual

The invention relates to a method for measuring the geometric morphometric parameters of a person wearing glasses (), said method implementing an independent computing device () comprising a screen, a target (), a compact image acquisition system () which is provided with a means of determining the inclination thereof, said system () being connected to said screen, and a computer for controlling the image acquisition system () and processing the images obtained. The main feature of a measuring method according to the invention is that it comprises a step in which the person observes the target () placed in a position known to the image acquisition system (), by rolling his or her head in an upward direction while keeping his or her eyes fixed on the target ().

Method for measuring the geometric morphometric parameteres of a person wearing glasses

Device and method for determining an objective eye refraction parameter of a subject depending on a plurality of gaze directions, the device includes elements for ophthalmologically measuring an objective eye refraction parameter of a subject, and elements of visual stimulation of variable proximity and intended to stimulate the visual accommodation of the subject for first and second proximity values. The device includes opto-mechanical alignment elements for carrying out a first optical alignment of the optical axis of measurement on an eye axis in a first measuring position corresponding to a first angle of lowered viewing associated with a first proximity value to take a first measurement of an objective eye refraction parameter of the subject, and a second alignment of the optical axis of measurement on the eye axis in another measuring position corresponding to another angle of lowered viewing associated with another proximity value to take a second measurement.

Device and method for determining at least one objective eye refraction parameter of a subject depending on a plurality of gaze directions

A method of measuring morpho-geometrical parameters of a person wearing eyeglasses includes causing the person to observe a point situated in front at infinity while holding the head naturally on a direction () that is substantially horizontal, acquiring a first image of the position of the frame () in this first posture, causing the person to observe the target () placed in a known position relative to the image acquisition system, by adopting a position that is natural and comfortable and that involves at least a tilting movement of the head; acquiring a second image of the position of the frame () in this second posture, determining the positions of the eyes () from one of the two images, computer processing of the two images obtained in order to determine the morpho-geometrical parameters of the person, and delivering the results of the measurements.

Method of measuring morpho-geometrical parameters of a person wearing eyeglasses

A method of preparing an ophthalmic lens for mounting in a surround of an eyeglass frame, the surround presenting a generally profiled shape with an inside face provided with a first engagement ridge or groove and lying between a rear margin for being turned towards the face of the wearer of the eyeglass frame and an opposite front margin, the method including: acquiring the three-dimensional shape of an acquired longitudinal profile running along the inside face; and shaping the ophthalmic lens so as to form on its edge face a second engagement ridge or groove extending along a deduced longitudinal profile of three-dimensional shape calculated as a function of the shape of the acquired longitudinal profile. The method further includes acquiring a geometrical characteristic that relates to the position of the engagement ridge or groove relative to the front and/or rear margin of the frame, the shape of the deduced longitudinal profile then also being calculated as a function of the geometrical characteristic.

Method of preparing an ophthalmic lens to be flush with a surround of an eyeglass frame

A method includes a step of contactless optical measurement of the local value of at least one refringence optical characteristic of the lens over defined local zone around the measurement point of the lens, and at least one step of determining the axial position of the measurement point on one of the faces of the lens; the axial position of the measurement point obtained is compared with the local value of the optical characteristic of the lens at the measurement point as determined from the contactless optical measurement, in order to deduce therefrom at least one vertex optical power of the lens at the measurement point.

Method and a device for measuring the power of an ophthalmic lens by combined feeling and contactless overall measurement

The measurement apparatus includes: a support arranged to receive a lens; lighting element including an optical system for generating a collimated light beam directed towards the lens under measurement installed on the support; detachment elements for detaching light rays from the light beam, for detaching a localized group of at least three non-coplanar light rays grouped together about a measurement axis in a measurement cylinder of section substantially smaller than the section of the lens under measurement; acquisition elements for identifying the deflections imparted by the lens on the detached light rays and for delivering a signal representative of the deflections; and an electronic and computer system programmed to deduce from said deflections the value of the refractive characteristic of the lens at the measurement point.

Method and apparatus for locally measuring refractive characteristics of a lens in one or several specific points of said lens

A device for automatically measuring characteristics of an ophthalmic lens (L), includes: a support () designed to receive such a lens; on one first side of the lens support, illuminating elements () including an optical system for producing a light beam directed towards the ophthalmic lens mounted on the support; and on a second side of the support, elements for analyzing () the image transmitted by the ophthalmic lens mounted on the support and illuminated by the illuminating elements (); elements for splitting the light beam including a first mask () forming a Hartmann array and arranged on the first side of the lens support to be illuminated, upstream of the lens by the light beam.

Device for automatically measuring characteristics of an ophthalmic lens

Device () for automatically detecting various characteristics of an ophthalmic lens (), the device includes a support () adapted to receive the lens. The support is displaceable in translation along two mutually perpendicular axes, and include elements for forming a positioning image on first acquisition and analysis elements.

Device and a method of automatically detecting various characteristics of an ophthalmic lens

The device includes receiver elements () for receiving the ophthalmic lens; on either side of the receiver elements, firstly lighting elements (S) for illuminating the ophthalmic lens () installed on the receiver elements, and secondly acquisition elements (C) for acquiring the shadow of the ophthalmic lens illuminated by the lighting elements (S); measurement elements (S,C) suitable for measuring the optical deflection power exerted by the ophthalmic lens on at least one light ray and for delivering a signal representative of the deflection power; and an electronic and computer system including geometrical correction calculation instructions for deducing from the measured deflection power a corrected shape for at least a portion of the shadow of the ophthalmic lens as perceived by the acquisition elements (C)

Centering and blocking device for an ophthalmic spectacles lens, an automatic detection method, and associated manual centering methods

Method of manually centering an ophthalmic lens, includes:

Growing community of inventors

Charenton-le-Pont, France

Fabien Divo