Essilor International (Compagnie Generale D'optique)

Essilor International

Sidel Participations

Cédric Lemaire

Ahmed Haddadi

Matthieu Guillot

Konogan Baranton

Michel Nauche

Fabien Divo

Eric Gacoin

Philippe Pinault

Cedric Begon

David Tang

Montserrat Burgos

Sébastien Pinault

Xavier Lippens

Aude Lapprand

Christian Massart

Gaël Mazoyer

Muriel Godeau

Olivier Alix

Gilles Massey

Tony Michel

Patrice Szymanski

Gerard Poirrier

Alain Baron

Romain Batherosse

André Menant

Frédéric Lecomte

Marion Cornet

Catherine Roussel

Jean-François Morisse

Frédéric Brachais

A method for characterizing optical elements of a lens element adapted for a person is presented, the lens element including: a holder including a refraction area having a refractive power based on a prescription for correcting an abnormal refraction of an eye of the person; and a plurality of optical elements configured so that at least one of slow down, retard or prevent a progress of the abnormal refraction of the eye of the person. A two-dimensional representation of the local optical power of the lens element is obtained using a fringe deflectometry method and the images used for the fringe deflectometry method consist of pixels smaller than or equal to 0.05 mm×0.05 mm.

Characterizing an optical element

Method for detecting a defect in a zone of interest of an optical lens, the method including: an image reception step, during which a plurality of images is received, each image includes a view of the zone of interest in front of a plurality of specific patterns, each specific pattern including a bright area and a dark area, and at least one image received is saturated in light intensity; a sampling step, during which each image of the plurality of images are sampled based on a common sampling pattern; a recombination step, during which a recombined image of the zone of interest is determined based on the common sampling pattern; and a defect detection step, during which a defect is detected in the zone of interest of the optical lens based on an analysis of the recombined image.

Method for detecting a defect in a zone of interest of an optical lens

A method of shaping an ophthalmic lens for mounting in a mixed surround of an eyeglass frame that presents at least one half-rim, includes:

Method of shaping an ophthalmic lens

A method of shaping an ophthalmic lens to have a desired outline with a machining device including a blocking support for the ophthalmic lens and at least one first machining tool, the method includes:

Method for shaping an ophthalmic lens for eyeglasses

A device () for machining an ophthalmic lens includes a support for the ophthalmic lens and for driving it in rotation about a blocking axis (A), a machining module () that can be swiveled relative to the support and driving the lens in rotation and that is suitable for pivoting about a swivel axis that is not parallel to the blocking axis of the lens, and at least one drill tool mounted to rotate on the machining module about a first axis of rotation. The machining device includes at least one other machining tool mounted to rotate on the machining module about another axis of rotation that is distinct from the first axis of rotation and that is stationary relative to the first axis of rotation.

Device for machining ophthalmic lenses, the device having a plurality of machining tools placed on a swivel module

A device () enabling automatic detection of the index marks of an ophthalmic lens (), includes a support () which is adapted in such a way as to receive the lens, and, on each side of the support, first elements () for the illumination of the ophthalmic lens installed on the support, and first elements () for analysis and acquisition of the light transmitted by the lens. The device also includes an activatable and deactivatable pattern filter () arranged between the first illuminating elements and the support.

Device for automatically detecting markings on an ophthalmic lens

A method of verifying at least one centering characteristic of an ophthalmic lens provided with markings and mounted on a frame, the method includes:

Automatic method of verifying at least one centering characteristic of an ophthalmic lens provided with markings

Growing community of inventors

Charenton-le-Pont, France

Cédric Lemaire