Essilor International (compagnie Generale D'optique)

Essilor International

Benoit Holvoet Vermaut

Frédéric Dubois

David Freson

Luc Martin

Eric Belloni

Thierry Allouis

Jérémie Biton

Martin Luc

Disclosed is a method for testing the feasibility of a pair of spectacles, the pair of spectacles comprising an identified spectacle frame. The method includes steps of: a) acquiring a range of values of at least one first parameter relating to a spectacle wearer, in all of which range it is desired to ensure the feasibility of the pair of spectacles, b) acquiring a range of values of at least one second parameter that relates to a spectacle wearer and that is different from each first parameter, in all of which range it is desired to ensure the feasibility of the pair of spectacles, c) confirming, for a characteristic number of values of each second parameter, that the pair of spectacles is feasible whatever the value of each first parameter comprised in its range.

Method for testing the feasibility of a pair of spectacles

A method of preparing an ophthalmic lens () to be fitted into a surround of a spectacle frame, includes: acquiring a longitudinal profile () of the surround; centering the longitudinal profile; acquiring the geometry of at least one part of an optical face of the ophthalmic lens; calculating a treatment setpoint for treating the ophthalmic lens; and treating the ophthalmic lens. The acquiring operation includes a step of calculating the bidimensional coordinates of a plurality of measurement points (P'i, P&#x2033;i) situated along two distinct longitudinal strands () which are chosen in such a way that they define between them a band which extends along the longitudinal profile, and a step of examining the ophthalmic lens to acquire the tridimensional coordinates for the measurement points with a view to calculating the treatment setpoint.

Method of preparing an ophthalmic lens

A method of calculating a shaping setpoint for an ophthalmic lens along a longitudinal profile includes:

Method of calculating a setpoint for beveling or grooving an ophthalmic lens

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Charenton-le-Pont, France

Benoit Holvoet Vermaut