US 11,885,974 B2
Near-eye display (NED) system and method using flexible reflector
Wai Sze Tiffany Lam, Bothell, WA (US); Ying Geng, Bellevue, WA (US); and Scott Charles McEldowney, Redmond, WA (US)
Assigned to META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US)
Filed by Meta Platforms Technologies, LLC, Menlo Park, CA (US)
Filed on Oct. 22, 2020, as Appl. No. 17/076,879.
Application 17/076,879 is a continuation of application No. 16/111,907, filed on Aug. 24, 2018, granted, now 10,852,558.
Prior Publication US 2021/0080734 A1, Mar. 18, 2021
Int. Cl. G02B 27/01 (2006.01); G02B 26/08 (2006.01); F21V 8/00 (2006.01)
CPC G02B 27/0179 (2013.01) [G02B 6/0016 (2013.01); G02B 6/0055 (2013.01); G02B 26/0825 (2013.01); G02B 27/0172 (2013.01); G02B 2027/0178 (2013.01); G02B 2027/0187 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A device, comprising:
a waveguide configured to output a first light having a first polarization to a first side of the waveguide and a second light having the first polarization to a second side of the waveguide;
an optical element assembly disposed at the first side of the waveguide and configured to convert the first light having the first polarization into a third light having a second polarization, and output the third light toward the waveguide; and
a polarizer disposed at the second side of the waveguide and configured to transmit the third light having the second polarization, and block the second light having the first polarization,
wherein the optical element assembly comprises a reflector, and a phase-modulator disposed between the waveguide and the reflector, and
wherein the reflector is configured to provide an optical power that is variable.