US 12,138,872 B2
Determining method for an ophthalmic lens with targeted transmission spectrum
Mathieu Feuillade, Charenton-le-Pont (FR); Pierre Fromentin, Bangkok (TH); Gregory Hervieu, Charenton-le-Pont (FR); David Montoya, Charenton-le-Pont (FR); and Aref Jallouli, Dallas, TX (US)
Assigned to Essilor International, Charenton-le-pont (FR)
Appl. No. 16/982,957
Filed by Essilor International, Charenton-le-Pont (FR)
PCT Filed Jun. 3, 2019, PCT No. PCT/EP2019/064377
§ 371(c)(1), (2) Date Sep. 21, 2020,
PCT Pub. No. WO2019/233960, PCT Pub. Date Dec. 12, 2019.
Claims priority of application No. 18305702 (EP), filed on Jun. 8, 2018.
Prior Publication US 2021/0016529 A1, Jan. 21, 2021
Int. Cl. B29C 64/393 (2017.01); B29C 64/129 (2017.01); B29D 11/00 (2006.01); B33Y 10/00 (2015.01); B33Y 50/02 (2015.01); B33Y 80/00 (2015.01); G02C 7/10 (2006.01)
CPC B29D 11/00442 (2013.01) [B29C 64/129 (2017.08); B29C 64/393 (2017.08); B29D 11/00653 (2013.01); B33Y 10/00 (2014.12); B33Y 50/02 (2014.12); B33Y 80/00 (2014.12); G02C 7/10 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of manufacturing an ophthalmic lens having at least one filtering function, the method comprising:
determining a transmission spectrum in a wavelength range from 280 to 2000 nm;
determining a matrix comprising, in separated layers or voxels, a first compound and a second compound absorbing light having a wavelength from 280 to 2000 nm, with regard to the determined transmission spectrum; and
additively manufacturing said matrix by depositing a plurality of predetermined volume elements of said compounds on a predetermined build support,
wherein the first and second compounds comprise compounds that are chosen among :
(i) a first initiator of polymerization comprised in the first compound and a second initiator comprised in the second compound, the second compound comprising an additive, said additive being chemically sensitive to said first initiator,
(ii) an organic cationic dye comprised in the first compound and an organic anionic dye comprised in the second compound additive,
(iii) a transition metallic complex used as a visible or near-infrared dye in the first compound and a monomer in the second compound, the transition metallic complex containing metallic species configured to speed up free radical polymerization of said monomer, and
(iv) a photochromic light management additive comprised in the first compound and a polymer comprised in the second compound, the polymer comprised in the second compound having a reticulation level preventing said photochromic light management additive from spatially rearranging when the photochromic light management additive is dispersed inside said polymer.