US 12,436,322 B2
Optical element comprising at least one holographic diffusive element
Jean-Paul Cano, Charenton-le-Pont (FR); Aude Bouchier, Charenton-le-Pont (FR); and Gilles Le Saux, Paris (FR)
Assigned to Essilor International, Charenton-le-Pont (FR)
Appl. No. 18/040,070
Filed by Essilor International, Charenton-le-Pont (FR)
PCT Filed Aug. 3, 2021, PCT No. PCT/EP2021/071677
§ 371(c)(1), (2) Date Jan. 31, 2023,
PCT Pub. No. WO2022/033929, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. 20305920 (EP), filed on Aug. 10, 2020.
Prior Publication US 2023/0273352 A1, Aug. 31, 2023
Int. Cl. G02B 5/00 (2006.01); G02B 5/02 (2006.01); G02C 7/02 (2006.01)
CPC G02B 5/0252 (2013.01) [G02B 5/0284 (2013.01); G02C 7/022 (2013.01); G02C 2202/24 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An optical element configured to be worn in front of an eye of a wearer, the optical element having two main surfaces,
wherein the optical element comprises at least one holographic diffusive element having diffusive properties resulting from spatial variations of refractive index of said holographic diffusive element, said spatial variation of refractive index being greater than 0.001 at at least one given wavelength, on a distance less than 30 μm.