US 11,719,935 B2
Optical display system having optical waveguides for guiding polarized lights and method, and display device having the same
Ruijun Dong, Beijing (CN); Chenru Wang, Beijing (CN); Yali Liu, Beijing (CN); Ke Li, Beijing (CN); and Hao Zhang, Beijing (CN)
Assigned to BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 16/957,589
Filed by BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Aug. 26, 2019, PCT No. PCT/CN2019/102594
§ 371(c)(1), (2) Date Jun. 24, 2020,
PCT Pub. No. WO2021/035482, PCT Pub. Date Mar. 4, 2021.
Prior Publication US 2022/0326538 A1, Oct. 13, 2022
Int. Cl. G02B 27/01 (2006.01); G02B 30/25 (2020.01); G02B 27/28 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 27/283 (2013.01); G02B 27/286 (2013.01); G02B 30/25 (2020.01); G02B 2027/0127 (2013.01); G02B 2027/0134 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical display system, comprising:
a display screen;
a light split member configured to split light from the display screen into a first polarized light and a second polarized light with different polarization directions;
a first optical waveguide configured to guide the first polarized light to a light exit side of the optical display system;
a second optical waveguide located at a light exit side of the first optical waveguide, spaced apart from the first optical waveguide, and configured to at least partially transmit the first polarized light and guide the second polarized light to the light exit side of the optical display system, comprising:
a second optical waveguide body configured to make the second polarized light propagate by total reflection in the second optical waveguide body, and
a polarizing member disposed in the second optical waveguide body and comprising a curved polarizing reflective film configured to totally reflect the second polarized light and totally transmit the first polarized light and
a fifth lens assembly disposed between the display screen and the light split member,
wherein the fifth lens assembly is configured to control an optical power of the first polarized light, and the fifth lens assembly and the polarizing member are configured to control an optical power of the second polarized light, so that imaging screens during imaging with the first polarized light and the second polarized light respectively by the optical display system are at different virtual image planes.