Essilor International

Essilor International (compagnie Generale D'optique)

Stéphane Gueu

Cyril Guilloux

Thierry Bonnin

Pascal Allione

Jean Sahler

Fabien Muradore

Loïc Quere

Olivier Pophillat

Nicolas Lavillonniere

Sébastien Maurice

Dominick Hubacz

Christophe Jeannin

Asma Lakhoua

Jean Carrier

Nicolas La Villonniere

Ronald Gauthier

Benoit Cazal

Isabelle Simon

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

Disclosed is a method for determining a parameter of an optical device including at least an optical lens, the method including: an optical system providing step, during which an optical system including a visual target, the optical device and an image acquisition module is provided in an initial configuration state, a parameter determining step during which a parameter of the optical device is determined based on the blur level of the images of the visual target acquired by the image acquisition module through the optical device in at least two different configuration states.

Method for determining a parameter of an optical device comprising at least an optical lens

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

The subject of the present invention is a method and a system for measuring the geometric or optical structure of an optical component. In particular, the invention relates to a method for measuring the geometric structure of a component bounded by a first side () and a second side (), said method comprising steps of: (S) measuring a first signal (MS) resulting from a first conversion of a first probe signal (PS), by at least said first side (); (S) measuring a second signal (MS) resulting from a second conversion of a second probe signal (PS), by at least said second side (); (S) determining a third conversion making it possible to convert a first set of coordinates (R) associated with the measurement of the first signal (MS) to a second set of coordinates (R) associated with the measurement of the second signal (MS); (S) estimating said first side () using the first signal (MS), said first simulation and a first cost criterion (V) quantifying a difference between the estimation (FS) and the first signal (MS); and (S) estimating said second side () using the second signal (MS), said second simulation, said third conversion and a second cost criterion (V) quantifying a difference between the estimation (ES) and the second signal (MS).

Method and tool for measuring the geometric structure of an optical component

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Charenton-le-Pont, France

Stéphane Gueu