US 12,352,968 B2
Waveguide for angular space light modulator display
Brandon Hellman, Tucson, AZ (US); and Yuzuru Takashima, Tucson, AZ (US)
Assigned to Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
Appl. No. 17/631,713
Filed by Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
PCT Filed Jul. 31, 2020, PCT No. PCT/US2020/044395
§ 371(c)(1), (2) Date Jan. 31, 2022,
PCT Pub. No. WO2021/022106, PCT Pub. Date Feb. 4, 2021.
Claims priority of provisional application 62/880,730, filed on Jul. 31, 2019.
Prior Publication US 2022/0269086 A1, Aug. 25, 2022
Int. Cl. G02B 27/01 (2006.01); G03B 21/00 (2006.01); H04N 9/31 (2006.01)
CPC G02B 27/0172 (2013.01) [H04N 9/3152 (2013.01); H04N 9/3161 (2013.01); G02B 2027/0174 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A light projection system comprising:
a. an angle-dependent pattern projection device projecting light of multiple patterns into corresponding multiple directions, and
b. a waveguide comprising an input and an output, configured to accept the light from the angle-dependent pattern projection device and emit the light through the output, wherein the angle-dependent pattern projection device is a spatial light modulator coupled to a lens array,
c. whereby the light from each of the multiple patterns takes a unique path through the waveguide.