Essilor International (Compagnie Generale D'optique)

Essilor International

Luis Castro

Eric Gacoin

Jérôme Moine

Bernard Pons

A method for manufacturing an optical lens, includes the steps of providing a blank () which includes an upper surface and a lower surface () for forming first and second lens surfaces (), an edge surface () forming a first mechanical positioning reference point and a ramp portion () provided between the edge surface and the upper surface, which forms a second positioning reference point; providing a positioning ring () including a cavity defining an inner contour () concentric with the edge surface which forms a first complementary control reference point and a shoulder () forming a second complementary control reference point; fitting the blank into the cavity, the edge surface being in contact with the inner contour and the ramp portion being in contact with the shoulder; and locking the blank in position on a locking and supporting pin, the ring then being positioned there between.

Method for manufacturing optical lenses and assembly for manufacturing such lenses

Method of taping an optical lens member () to be manufactured. An optical lens member providing step (S) is performed during which an optical lens member () is provided, the optical lens member has a first optical surface () associated with a first reference system and a second optical surface () to be manufactured, the first and second optical surfaces being connected by a external periphery surface (), the first reference system being identified by at least one referencing element () on the first optical surface and/or the external periphery surface of the optical lens member, a taping step (S) during which an adhesive tape () is provided on the first surface of the lens member so as to cover at least part of the first surface and leaving the referencing element uncovered.

Method for taping an optical lens member

A method for manufacturing an ophthalmic lens by machining, includes the steps of providing and mounting a blank on a first supporting device having a first machining reference frame in a first position in which a lower surface of the blank is opposite the first device; machining, in the first position in the first reference frame, an upper surface of the blank, machining in a second predetermined machining reference frame which is known relative to the first at least one mechanical referencing element on the blank, and providing a second supporting device including at least one complementary mechanical referencing element configured such as to engage with the at least one mechanical referencing element so that the latter is positioned and supported on the second device in a second predetermined position.

Growing community of inventors

Charenton-le-Pont, France

Luis Castro