Essilor International

Essilor International (compagnie Generale D'optique)

Jean Stephane

Eric Gacoin

Jonathan Saulny

Jean-Marc Padiou

Laurent Marcepoil

Patrick Herbin

Alain Batard

Pierre Kress

Khamphone Sisavanh

Disclosed is a method implemented by a computer for determining surfacing data to obtain a surface of a lens element, the surface of the lens element including: a refraction area having a first curvature; and multiple optical elements placed on at least part of the finished optical surface, each optical element having at least a second curvature.

Optical lens

The tool includes a base including a rigid carrier and a flexible collar encircling the rigid carrier; an elastically compressible interface; and a flexible buffer including a central portion that is located in line with the rigid carrier and a peripheral portion that is located transversely therebeyond. This peripheral portion is connected to the carrier exclusively via the interface and via the collar, wherein the collar is configured so that the tool is elastically deformable between a rest position that it adopts in the absence of stress and a reference position in which the transverse end second surface of the flexible buffer is pressed against a reference surface that is spherical and of radius included between 40 mm and 1500 mm.

Optical-grade surfacing tool

A surfacing tool for optical purposes, includes a body () for mounting the tool () on a surfacing machine, an elastically compressible interface (), a flexible buff (), and a connecting structure between the mounting body () and the elastically compressible interface (). The connecting structure includes a bell (), and a supporting body () between the peripheral wall () of the bell () and the periphery of the interface (), the body () for mounting the tool () on a surfacing machine () being connected to the main body () on the side opposite the side facing the interface.

Surfacing tool for optical purposes

A surface device includes a rigid holder (), an elastically compressible interface () connected to the rigid holder, a flexible pad () adapted to be applied onto the surface to be machined () and a flexible belt () applied against and partially covering the side surface () of the interface (), an annular portion () of the side surface () of the interface () being free between the belt () and the holder ().

Optical grade surfacing device

Tool for surfacing an optical surface

Growing community of inventors

Charenton-le-Pont, France

Jean Stephane