Essilor International

Essilor International (compagnie Generale D'optique)

Martha Hernandez-Castaneda

Gildas Marin

Konogan Baranton

Cyril Guilloux

Laurent Calixte

Benjamin Rousseau

Guilhem Escalier

Bruno Fermigier

Fabien Divo

Aude Bouchier

Cécile Petignaud

Adèle Longo

Jean Sahler

Aude Contet

Sarah Marie

Stéphane Boutinon

Melanie Heslouis

Jean-Luc Perrin

Estelle Netter

Farid Karioty

Pedro Ourives

Nisha Singh

Mélanie Heslouis

Adéle Longo

John Carrier

Camille Cathala

Paul Vernerey

A method for inducing a controlled variation of accommodation in an eye of a subject, using an optical system arranged in front of at least one eye of the subject and including displaying an environmental scene, displaying, in this environmental scene, a target visible by the subject through said optical system, said target being displayed in such a way that it is perceived by the subject as moving away from said subject or moving towards said subject within said environmental scene, having the subject observe said moving target.

Method for inducing a controlled variation of accommodation in an eye of a subject

The invention concerns a couple of test images, for a binocular refraction method, that comprises: —a first test image () to be provided to a first eye of a subject, comprising a central image (c) surrounded by a first peripheral image (p), this central image comprising at least one optotype (o); and—a second test image () to be provided to a second eye of the subject, comprising a central image (c) surrounded by a second peripheral image (p) substantially identical to the first peripheral image, this central image being deprived of optotypes, or comprising only optotypes (o) with a low contrast or sharpness level. The invention concerns also an associated binocular refraction method and refraction instrument, and an associated computer program.

Binocular refraction instrument, set of test images, binocular refraction method and computer program associated thereof

Disclosed is a hoist apparatus including: an electric motor, and a control box that can be electrically powered by a power supply, the control box including at least an electronic control circuit, an electrical wiring and an external casing forming a box of the control box, the external casing including at least sidewalls and a removable lid closing the box, the control box controlling the operations of the electric motor thanks to the electrical wiring connected to the electronic control circuit, to the power supply and to the electric motor, and a monitoring device, wherein the monitoring device is an insert of the box, the monitoring device being arranged within an enclosure, the enclosure being an added part of the box or being an exchanged part of the box and wherein the monitoring device is connected to the electrical wiring.

Method for determining a value of a global sensitivity parameter of a subject, methods using this value and system for determining said value

Disclosed is a method for determining an eye parameter of a user of a display device, the eye parameter relating to a dioptric parameter of an ophthalmic lens to be provided to the user, the method including: a display device providing step, during which a binocular display device is provided to the user,&#x2014;an image display step, during which an image is displayed to the user when using the display device; a display parameter modifying step, during which at least one parameter of the display device is modified so as to modify the virtual display distance of the perceived image, wherein the display parameter modifying step is repeated until image subjective quality of the perceived image is perceived by the user as optimal; and an eye parameter determining step during which an eye parameter is determined based on the parameter of the display device.

Method of determining an eye parameter of a user of a display device

A method for determining a cylinder of an ophthalmic lens to be mounted on a spectacle frame is provided, the method including: providing a measuring device configured to run a Jackson Cross Cylinder procedure; determining components of a first vector of the cylinder in a two-dimensional vector cylinder representation; and determining components of a second vector of the cylinder in the two-dimensional vector cylinder representation, the components of the second vector of the cylinder being determined such that a Euclidian distance between the first vector and the second vector is independent of a value of the cylinder.

Method for determining the clyinder of an ophthalmic lens

Disclosed is a measurement method for determining a value of a visual correction need for near vision of an individual in a natural posture for near vision. A recognizing limit distance is determined so that the individual is able to recognize at least one predetermined symbol farther than the limit distance relatively to the individual and unable to recognize the at least one predetermined symbol closer to the individual than the limit distance. A portable medium displaying the predetermined symbol is displaced in front of the face and eyes of the individual to change a frontal distance between his/her eyes and the portable medium and in which when a recognizing limit distance is detected by the individual, the limit distance is measured and the value of the visual correction need is determined from the measured limit distance, wherein the visual correction need includes an accommodation compensation need.

Measurement method for the determination of a value of a visual correction need for near vision of an individual

A method for providing an ophthalmic lens to a wearer including: providing the wearer's astigmatism features measured at a first proximity; providing the wearer's astigmatism features measured at a second proximity, wherein the second proximity is greater than the first proximity; determining customized wearer's astigmatism features based on the combination resulting of linear combinations of the wearer's astigmatism features measured at the first proximity and of the wearer's astigmatism features measured at the second proximity; and applying the customized astigmatism features to the ophthalmic lens.

Method for providing an ophthalmic lens to a wearer

A method for determining a pair of ophthalmic lenses adapted to a wearer, the method including: a wearer data providing, during which wearer data including at least an indication of the distortion dominant eye of the wearer and an indication of the prescription of the wearer are provided; an ophthalmic lenses determining, during which a pair of ophthalmic lenses adapted to the wearer is determined based at least on the wearer data.

Method for determining a pair of ophthalmic lenses

Disclosed is a method for optical design of a pair of ophthalmic lenses for correcting spherical and cylindrical refractive errors of the eyes of a wearer, including a step of defining the need for spherical and cylindrical correction of the wearer for various viewing distances, and a step of determining the spherical and cylindrical power of the ophthalmic lenses at viewing points with various proximities, in accordance with the correction needs of the wearer. The power of at least one of the two ophthalmic lenses is determined such as to limit the deviation obtained therebetween upon adding equivalent spherical power between the viewing points with various proximities and/or varying the cylindrical power vector between the viewing points with various proximities. Also disclosed is a pair of ophthalmic lenses designed according to such a method.

Method for optical design of a pair of ophthalmic lenses and pair of ophthalmic lenses thus obtained

A multifocal lens supply system including a multifocal lens ordering computing unit and a multifocal lens determination computing unit, for providing to a wearer a customized progressive spectacle ophthalmic lens having a customized addition Add, wherein Add=Add+corr, wherein corr is a corrective value which is the output of a function where the input is at least an individual wearer parameter value and at least an output value over the input range is different from nil, and wherein Addis a prescribed addition.

Multifocal lens supply system for providing to a wearer a customized progressive spectacle ophthalmic lens

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.

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Charenton-le-Pont, France

Martha Hernandez-Castaneda