US 11,835,723 B2
Methods, devices, and systems for illuminating spatial light modulators
Hui-Chuan Cheng, Cooper City, FL (US); Hyunsun Chung, Weston, FL (US); Jahja I. Trisnadi, Cupertino, CA (US); Clinton Carlisle, Parkland, FL (US); Kevin Richard Curtis, Boulder, CO (US); and Chulwoo Oh, Cedar Park, TX (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Nov. 22, 2021, as Appl. No. 17/456,083.
Application 17/456,083 is a continuation of application No. 15/927,970, filed on Mar. 21, 2018, granted, now 11,187,900.
Claims priority of provisional application 62/474,591, filed on Mar. 21, 2017.
Prior Publication US 2022/0082837 A1, Mar. 17, 2022
Int. Cl. G02B 27/01 (2006.01); G02B 27/14 (2006.01); G03B 21/00 (2006.01); G06T 19/00 (2011.01); G09G 3/24 (2006.01); G02B 30/26 (2020.01); G02B 27/00 (2006.01); G06F 3/01 (2006.01); G02B 5/30 (2006.01); F21V 8/00 (2006.01); G02F 1/137 (2006.01); G03B 21/20 (2006.01); G02B 30/52 (2020.01); G06V 20/20 (2022.01); H04N 13/279 (2018.01); H04N 13/344 (2018.01); H04N 13/239 (2018.01); G06F 3/0482 (2013.01); H04N 13/00 (2018.01); G09G 3/02 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 5/3016 (2013.01); G02B 6/0076 (2013.01); G02B 27/0093 (2013.01); G02B 27/0103 (2013.01); G02B 27/141 (2013.01); G02B 30/26 (2020.01); G02F 1/137 (2013.01); G03B 21/00 (2013.01); G06F 3/012 (2013.01); G06T 19/00 (2013.01); G09G 3/24 (2013.01); G02B 6/005 (2013.01); G02B 27/0176 (2013.01); G02B 30/52 (2020.01); G02B 2027/014 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0134 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/0174 (2013.01); G02B 2027/0178 (2013.01); G02B 2027/0187 (2013.01); G03B 21/208 (2013.01); G06F 3/013 (2013.01); G06F 3/0482 (2013.01); G06T 19/006 (2013.01); G06V 20/20 (2022.01); G09G 3/025 (2013.01); H04N 13/239 (2018.05); H04N 13/279 (2018.05); H04N 13/344 (2018.05); H04N 2013/0081 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A display device comprising:
one or more light emitters configured to emit light having at least a first polarization state and a second polarization state;
a waveguide disposed with respect to said one or more light emitters to receive the light emitted from said one or more light emitters such that at least some of said light is guided in the waveguide by total internal reflection, said waveguide configured to: i) eject the light having the first polarization state out of said waveguide, and ii) not eject the light having the second polarization state;
a spatial light modulator disposed with respect to said waveguide to receive said light ejected from said waveguide and modulate said light; and
a light recycling system configured to:
receive the light having the second polarization state that is not initially ejected from the waveguide;
convert the light having the second polarization state to light having the first polarization state; and
redirect the converted light having the first polarization state such that the redirected light is guided in the waveguide by total internal reflection and ejected from the waveguide toward the spatial light modulator.