US 12,420,502 B2
Methods of manufacturing an ophthalmic lens including asymmetric gradient index optical elements
Paul Chamberlain, Livermore, CA (US); Sourav Saha, Pleasanton, CA (US); and Arthur Bradley, Bloomington, IN (US)
Assigned to COOPERVISION INTERNATIONAL LIMITED, Fareham (GB)
Appl. No. 18/718,444
Filed by CooperVision International Limited, Fareham (GB)
PCT Filed Oct. 23, 2023, PCT No. PCT/GB2023/052763
§ 371(c)(1), (2) Date Jun. 11, 2024,
PCT Pub. No. WO2024/089401, PCT Pub. Date May 2, 2024.
Claims priority of provisional application 63/420,173, filed on Oct. 28, 2022.
Prior Publication US 2025/0100238 A1, Mar. 27, 2025
Int. Cl. B29D 11/00 (2006.01)
CPC B29D 11/00153 (2013.01) [B29D 11/00355 (2013.01); B29D 11/00788 (2013.01); B29D 11/00951 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method of manufacturing an ophthalmic lens comprising:
providing a lens substrate;
providing a photocurable film;
using a digital light projection system to photocure a plurality of regions of the film, thereby producing a plurality of photocured gradient index optical elements, each of the plurality of photocured gradient index optical elements having an asymmetric refractive index profile that varies in a radial direction and a transverse direction, wherein the photocured film has a uniform thickness; and
applying the film to a surface of the lens substrate,
wherein the ophthalmic lens is a spectacle lens or a contact lens.