US 12,233,611 B2
Functional wafers by 3D printing
Hao Wen Chiu, Dallas, TX (US); Aref Jallouli, Dallas, TX (US); and Haifeng Shan, Dallas, TX (US)
Assigned to Essilor International, Charenton-le-Pont (FR)
Appl. No. 17/915,933
Filed by Essilor International, Charenton-le-pont (FR)
PCT Filed Mar. 31, 2021, PCT No. PCT/EP2021/058511
§ 371(c)(1), (2) Date Sep. 29, 2022,
PCT Pub. No. WO2021/198374, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 20167150 (EP), filed on Mar. 31, 2020.
Prior Publication US 2023/0147427 A1, May 11, 2023
Int. Cl. B29D 11/00 (2006.01); B29C 45/14 (2006.01); B29C 64/118 (2017.01); B29L 11/00 (2006.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01)
CPC B29D 11/00326 (2013.01) [B29C 45/14 (2013.01); B29C 64/118 (2017.08); B29D 11/0073 (2013.01); B29L 2011/0016 (2013.01); B33Y 10/00 (2014.12); B33Y 80/00 (2014.12)] 16 Claims
OG exemplary drawing
 
1. A method of manufacturing an optical lens, comprising:
obtaining a transparent thermoplastic (TP) carrier with at least one smooth surface;
printing, via a 3-D printer on the side opposite to the at least one smooth surface of the transparent TP carrier, at least one transparent layer using a thermoplastic filament, each transparent layer having a predetermined light filtering property, thereby forming a functional layer; and
performing an injection over-molding process to fuse bond the functional layer to a thermoplastic substrate thereby forming the optical lens, wherein the at least one smooth surface of the transparent TP carrier forms a smooth surface of the manufactured optical lens, so that the transparent TP carrier is included in the manufactured optical lens.