US 12,169,273 B2
Tunable lens with deformable reflector
Babak Amirsolaimani, Redmond, WA (US); Yusufu Njoni Bamaxam Sulai, Snohomish, WA (US); Kieran Connor Kelly, Seattle, WA (US); and Spencer Allan Wells, Seattle, WA (US)
Assigned to Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed by Facebook Technologies, LLC, Menlo Park, CA (US)
Filed on Aug. 25, 2021, as Appl. No. 17/411,647.
Claims priority of provisional application 63/230,344, filed on Aug. 6, 2021.
Prior Publication US 2023/0041406 A1, Feb. 9, 2023
Int. Cl. G02B 26/00 (2006.01); G02B 17/08 (2006.01); G02B 26/08 (2006.01); G02B 27/01 (2006.01); G02B 27/28 (2006.01); G02C 7/08 (2006.01)
CPC G02B 26/0825 (2013.01) [G02B 17/08 (2013.01); G02B 27/0172 (2013.01); G02B 27/286 (2013.01); G02C 7/081 (2013.01); G02B 2027/0178 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lens comprising:
opposed first and second reflectors;
wherein the first reflector is configured to at least partially transmit a light beam therethrough to impinge onto the second reflector;
wherein the second reflector is configured to at least partially reflect the light beam propagated through the first reflector back to the first reflector;
wherein the first reflector is further configured to at least partially reflect the light beam reflected by the second reflector back to the second reflector;
wherein the second reflector is further configured to at least partially transmit the light beam reflected by the first reflector;
wherein at least one of the first or second reflectors is deformable by application of a control signal for tuning optical power of the lens; and
wherein the at least one of the first or second reflectors further comprises a flexible membrane that includes a layer of electroactive material disposed between a transparent electrode layer and a conductive reflective layer.