Essilor International (compagnie Generale D'optique)

Essilor International

Catherine Roussel

Cedric Lemaire

Cédric Lemaire

Montserrat Burgos

Aude Lapprand

Sebastien Pinault

Christian Massart

Gilles Massey

Muriel Godeau

A method for cutting-out a multi-layer ophthalmic lens () following a desired contour (C), includes: a step of pre-blanking the ophthalmic lens () using a preliminary tool (), according to a preliminary contour (CC); a step of blanking the ophthalmic lens () using a blanking wheel (), following a blanking contour (CC); and a step of finishing the ophthalmic lens () using a finishing tool (). According to the invention, the preliminary contour (CC) is larger than the desired contour (C), and the blanking wheel () used has a granulometry of between 0.1 and 0.5 mm and is controlled in relation to the ophthalmic lens () so as to apply a radial force of between 0.1 and 5 N to the ophthalmic lens () during the blanking step.

Method for cutting-out a multi-layer ophthalmic lens

Growing community of inventors

Charenton-le-Pont, France

Catherine Roussel