US 12,216,288 B2
Display system with spatial light modulator illumination for divided pupils
Hui-Chuan Cheng, Cooper City, FL (US); Chulwoo Oh, Sammamish, WA (US); Clinton Carlisle, Parkland, FL (US); Michael Anthony Klug, Austin, TX (US); and William J. Molteni, Jr., Nibley, UT (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on May 23, 2023, as Appl. No. 18/322,401.
Application 17/351,110 is a division of application No. 15/928,015, filed on Mar. 21, 2018, granted, now 11,079,603, issued on Aug. 3, 2021.
Application 18/322,401 is a continuation of application No. 17/895,868, filed on Aug. 25, 2022, granted, now 11,703,691.
Application 17/895,868 is a continuation of application No. 17/351,110, filed on Jun. 17, 2021, granted, now 11,467,416, issued on Oct. 11, 2022.
Claims priority of provisional application 62/474,568, filed on Mar. 21, 2017.
Prior Publication US 2023/0367132 A1, Nov. 16, 2023
Int. Cl. G02B 27/09 (2006.01); G02B 27/01 (2006.01); G02B 27/10 (2006.01); G06T 19/00 (2011.01)
CPC G02B 27/0944 (2013.01) [G02B 27/0172 (2013.01); G02B 27/1026 (2013.01); G02B 27/1046 (2013.01); G02B 2027/0174 (2013.01); G06T 19/006 (2013.01)] 16 Claims
OG exemplary drawing
 
8. A display device comprising:
a light source having a first spectral distribution;
a waveguide disposed with respect to said light source to receive light from said light source, said waveguide including an outcoupling optical element comprising a liquid crystal and configured to eject light out of said waveguide;
a spatial light modulator disposed with respect to said waveguide to receive said light ejected from said waveguide and modulate said light;
a first optical retarder arranged between the liquid crystal and the spatial light modulator, wherein the first optical retarder is disposed on a first side of the waveguide between the waveguide and the spatial light modulator, and wherein the first optical retarder converts circularly polarized light diffracted from the liquid crystal into linear polarized light; and
a second optical retarder, wherein the second optical retarder is disposed on a second side of the waveguide that is opposite to the first side of the waveguide, and wherein the second optical retarder converts circular polarized light into linear polarized light with a linear polarization different than that of the first optical retarder.