US 12,135,470 B2
Electroactive lens assembly
Philip Ekkels, Zwijnaarde (BE); Wouter Woestenborghs, Zwijnaarde (BE); and Jelle De Smet, Zwijnaarde (BE)
Assigned to Morrow N.V., Zwijnaarde (BE)
Appl. No. 17/427,053
Filed by Morrow N.V., Zwijnaarde (BE)
PCT Filed Jan. 30, 2020, PCT No. PCT/EP2020/052373
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2020/157245, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2022478 (NL), filed on Jan. 30, 2019.
Prior Publication US 2022/0107510 A1, Apr. 7, 2022
Int. Cl. G02C 7/08 (2006.01); G02F 1/29 (2006.01)
CPC G02C 7/083 (2013.01) [G02F 1/294 (2021.01); G02C 2202/16 (2013.01); G02C 2202/20 (2013.01); G02F 2202/28 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A lens foil comprising:
a first substrate with a first transparent electrode;
a second substrate with a second transparent electrode;
a Fresnel lens and liquid crystalline material between the first transparent electrode and the second transparent electrode, wherein the first transparent electrode, the second transparent electrode, the Fresnel lens and the liquid crystalline material define an optical device having an optical axis in at least one state of the optical device; and
first and second conductive plugs extending through the lens foil, wherein the first and second conductive plugs are positioned relative to the optical axis of the Fresnel lens such that radial lines extending from the optical axis to the first and second conductive plugs mutually enclose an angle of less than 120 degrees.
 
11. A mutually attached stack of a first and a second lens foils each comprising a first substrate with a first transparent electrode, and a second substrate with a second transparent electrode, between which transparent electrodes a Fresnel lens and liquid crystalline material are present, wherein:
the transparent electrodes, the Fresnel lens and the liquid crystalline material define an optical device,
each lens foil further comprises a first conductive plug and a second conductive plug extending through the lens foil, and
the first and second conductive plug are positioned relative to an optical axis of the Fresnel lens such that radial lines extending from the optical axis to the first conductive plug and the second conductive plug mutually enclose an angle of less than 120 degrees.