US 12,411,361 B2
Contact lens containing a diffractive optical element and related methods
Edward James Harley Evans, Southampton (GB); and Robert Oag, Southampton (GB)
Assigned to COOPERVISION INTERNATIONAL LIMITED, Fareham (GB)
Appl. No. 18/855,331
Filed by CooperVision International Limited, Fareham (GB)
PCT Filed Oct. 16, 2023, PCT No. PCT/GB2023/052679
§ 371(c)(1), (2) Date Oct. 9, 2024,
PCT Pub. No. WO2024/084191, PCT Pub. Date Apr. 25, 2024.
Claims priority of provisional application 63/417,347, filed on Oct. 19, 2022.
Prior Publication US 2025/0116885 A1, Apr. 10, 2025
Int. Cl. G02C 7/04 (2006.01); G02C 7/08 (2006.01); G02C 7/10 (2006.01)
CPC G02C 7/049 (2013.01) [G02C 7/083 (2013.01); G02C 7/10 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A contact lens including a diffractive optical element, an optical filter and an optic axis passing through the optical filter and the diffractive optical element, wherein:
the diffractive optical element is configured to focus visible light; and
the optical filter is configured to block light with a wavelength of 450 nm to 495 nm to reduce the visible light spectrum that can pass through the contact lens.