US 12,339,574 B2
Polarization-dependent light steering apparatus-based wide projection display system
Hak-Rin Kim, Daegu (KR); and Min-Kyu Park, Daegu (KR)
Assigned to Kyungpook National University Industry-Academic Cooperation Foundation, Daegu (KR)
Appl. No. 17/315,001
Filed by Kyungpook National University Industry-Academic Cooperation Foundation, Daegu (KR)
PCT Filed Nov. 8, 2019, PCT No. PCT/KR2019/015187
§ 371(c)(1), (2) Date Dec. 19, 2022,
PCT Pub. No. WO2020/096422, PCT Pub. Date May 14, 2020.
Claims priority of application No. 10-2018-0136624 (KR), filed on Nov. 8, 2018.
Prior Publication US 2023/0229070 A1, Jul. 20, 2023
Int. Cl. G03B 21/20 (2006.01); G03B 21/14 (2006.01); G03B 21/56 (2006.01)
CPC G03B 21/2073 (2013.01) [G03B 21/142 (2013.01); G03B 21/56 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A wide projection display system, comprising:
a projector that sequentially outputs images to be projected on different regions of a screen in a time-division scheme: and
a light steering device installed at a rear of the projector and controlling output directions of the images differently according to polarization directions of the images,
wherein the light steering device comprises a plurality of Fresnel prism arrays having polarization dependence and stacked along a projection direction of images output from the projector.