公开(公告)号：US20210187690A1

公开(公告)日：2021-06-24

申请号：US16755059

申请日：2018-10-08

Applicant: Essilor International

Inventor： Sébastien PIRAUBE ,  Xavier BULTEZ ,  Jérome MOINE

IPC: B24B13/005 ,  B24B9/14

Abstract: In a method of preparing a lens blank for a surfacing operation, the lens blank is fastened to a support with a base and a support material via which the lens blank is fastened. The support material has a circular periphery. The surfacing transforms the lens blank into a surfaced lens. The method includes: determining the surfaced lens shape based on input data; based on the surfaced lens shape, determining a maximum diameter of the support material shape based on a predetermined maximum thickness defining the maximum thickness of the support material allowed to be cut into during the surfacing of the lens blank; choosing a diameter for the support material shape ≤the maximum diameter for further fastening the lens blank to the support by forming the support material so the support material shape has a diameter corresponding to the chosen diameter.

公开(公告)号：US20210138603A1

公开(公告)日：2021-05-13

申请号：US16484393

申请日：2018-02-07

Applicant: ESSILOR INTERNATIONAL

Inventor： Jérome MOINE ,  Luc MARTIN ,  Sébastien PINAULT ,  Xavier BULTEZ

IPC: B24B13/005 ,  B29D11/00

Abstract: A set includes a molding device having a molding face having the same shape as a contact face of the blocking device. A removable overlay of rigid material has a first face attached to a first face of the semi-finished optical element and a second face opposite to the first face having the same shape as the contact face of the blocking device, the set being configured for having a first subset configuration in which the second face of the removable overlay is in molding contact with the molding face of the molding device, then a second subset configuration in which the second face of the removable overlay is free and then a third subset configuration in which the second face of the removable overlay is retained in contact with the contact face of the blocking device.