Essilor International

Essilor International (compagnie Generale D'optique)

Bernard Pons

Eric Gacoin

Mathieu Meynen

Jérôme Moine

Luis Castro

Alexandre Gourraud

Loic Quere

Loïc Quere

Luis Ricardo Castro Martinez

Disclosed is a machining method by turning at least one surface of an ophthalmic lens, using a turning machine having at least one geometrical defect. The method includes a step (-) of determining a turning configuration for machining by turning the at least one surface of the ophthalmic lens, the turning configuration including turning parameters and machine defects parameters associated to the turning parameters.

Machining method by turning at least one surface of an ophthalmic lens, using a turning machine having at least one geometrical defect

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

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.

Method for manufacturing ophthalmic lenses by machining

Growing community of inventors

Charenton-le-Pont, France

Bernard Pons