US 12,269,228 B2
Method for manufacturing an optical element with a functional film
Youval Katzman, Kibbutz Shamir (IL); and Michel Matz, Charenton-le-Pont (FR)
Assigned to Essilor International, Charenton-le-Pont (FR); and Shamir Optical Industry Ltd, Kibbutz Shamir (IL)
Appl. No. 17/283,918
Filed by Essilor International, Charenton-le-Pont (FR); and SHAMIR OPTICAL INDUSTRY LTD, Kibbutz Shamir (IL)
PCT Filed Oct. 9, 2019, PCT No. PCT/EP2019/077407
§ 371(c)(1), (2) Date Apr. 8, 2021,
PCT Pub. No. WO2020/074608, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 18306330 (EP), filed on Oct. 9, 2018.
Prior Publication US 2021/0347134 A1, Nov. 11, 2021
Int. Cl. B29D 11/00 (2006.01); B24B 13/005 (2006.01); B29C 63/02 (2006.01); B29L 11/00 (2006.01)
CPC B29D 11/00317 (2013.01) [B24B 13/0057 (2013.01); B29C 63/02 (2013.01); B29D 11/00432 (2013.01); B29D 11/0073 (2013.01); B29C 2793/009 (2013.01); B29L 2011/0016 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for manufacturing an optical lens, the method comprising the following successive steps:
a step of providing an optical lens attached to a blocking piece at a convex surface of the optical lens, the blocking piece acting as a receptacle to receive the optical lens;
a step of laminating a functional film on a concave surface of said optical lens opposite the convex surface to obtain a laminated lens surface;
a step of obtaining an assembly constituted by the blocking piece, the optical lens and the functional laminated film, the optical lens with the functional laminated film being fastened to the blocking piece by a bonding material;
a step of cutting a film excess directly on said assembly to reduce the film shape, the film excess comprising parts of the functional laminated film which extend beyond an edge of the optical lens and thus overhang the edge; and
a step of deblocking the optical lens with the functional laminated film, and the blocking piece, the deblocking step being carried out with at least a pressurized fluid jet configured to separate the optical lens with the functional laminated film from the bonding material.