US 11,994,703 B2
Compact spatial light modulator projection system
Andrew John Ouderkirk, Redmond, WA (US); Tanya Malhotra, Redmond, WA (US); and Weichuan Gao, 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 May 14, 2020, as Appl. No. 16/874,115.
Claims priority of provisional application 62/850,473, filed on May 20, 2019.
Prior Publication US 2020/0371354 A1, Nov. 26, 2020
Int. Cl. G02B 15/14 (2006.01); G02B 5/30 (2006.01); G02B 13/00 (2006.01); G02B 15/20 (2006.01); G02B 27/01 (2006.01); G02B 27/28 (2006.01); G03H 1/02 (2006.01); H04N 9/31 (2006.01)
CPC G02B 5/3025 (2013.01) [G02B 5/3016 (2013.01); G02B 27/0101 (2013.01); G02B 27/0172 (2013.01); G02B 27/283 (2013.01); G03H 1/0248 (2013.01); H04N 9/3102 (2013.01); G02B 2027/0178 (2013.01); G03H 2001/0264 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical device, comprising:
a first polarization selective reflector positioned relative to a spatial light modulator; and
a first reflective assembly positioned relative to the first polarization selective reflector so that the first polarization selective reflector receives first light from the spatial light modulator and directs at least a portion of the first light having a first polarization toward the first reflective assembly as second light, and the first reflective assembly receives the second light from the first polarization selective reflector and directs at least a portion of the second light toward the first polarization selective reflector as third light having a second polarization, wherein the second polarization is distinct from the first polarization.