US 12,228,715 B2
Optical system and display apparatus
Zhenxing Zhou, Beijing (CN); Tao Hong, Beijing (CN); Haoran Jing, Beijing (CN); and Gaoming Sun, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/607,778
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Dec. 25, 2020, PCT No. PCT/CN2020/139191
§ 371(c)(1), (2) Date Oct. 29, 2021,
PCT Pub. No. WO2022/133968, PCT Pub. Date Jun. 30, 2022.
Prior Publication US 2022/0397750 A1, Dec. 15, 2022
Int. Cl. G02B 17/08 (2006.01); G02B 27/28 (2006.01); G02B 30/25 (2020.01)
CPC G02B 17/0856 (2013.01) [G02B 27/285 (2013.01); G02B 30/25 (2020.01)] 18 Claims
OG exemplary drawing
 
1. An optical system, comprising:
at least one first display module;
at least one second display module; and
a first optical element including a first light incident surface, a second light incident surface, and a viewing surface; the first light incident surface being disposed on a light exit path of the at least one first display module, and the second light incident surface being disposed on a light exit path of the at least one second display module, wherein
the first light incident surface is configured to transmit imaging light emitted from the at least one first display module into the first optical element, and refract the imaging light emitted from the at least one first display module onto the second light incident surface;
the second light incident surface is configured to transmit imaging light emitted from the at least one second display module into the first optical element, and refract the imaging light emitted from the at least one second display module onto the viewing surface, and reflect the imaging light, which is transmitted into the first optical element through the first light incident surface, onto the viewing surface;
the viewing surface is configured to transmit imaging light emitted from the at least one first display module and the at least one second display module to a human eye, so as to form virtual images on different focal planes at a side of the viewing surface away from the human eye; and
a second optical element including a third light incident surface and a first light exit surface; the third light incident surface being disposed on a light exit path of a first second display module in the at least one second display module, and the first light exit surface being disposed opposite to the second light incident surface of the first optical element, wherein
the third light incident surface is configured to transmit imaging light emitted from the first second display module into the second optical element, and directly or indirectly transmit the imaging light emitted from the first second display module onto the first light exit surface; and
the first light exit surface is configured to transmit imaging light incident onto the first light exit surface in the second optical element onto the second light incident surface of the first optical element.