US 12,386,420 B2
Eye tracking apparatus and virtual reality apparatus
Qiang Wang, Beijing (CN)
Assigned to Beijing Zitiao Network Technology Co., Ltd., Beijing (CN)
Filed by Beijing Zitiao Network Technology Co., Ltd., Beijing (CN)
Filed on Dec. 4, 2023, as Appl. No. 18/527,951.
Claims priority of application No. 202211559255.2 (CN), filed on Dec. 6, 2022.
Prior Publication US 2024/0184358 A1, Jun. 6, 2024
Int. Cl. G09G 5/00 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01); G02B 27/10 (2006.01); G02B 27/28 (2006.01); G06F 3/01 (2006.01)
CPC G06F 3/013 (2013.01) [G02B 27/0093 (2013.01); G02B 27/0101 (2013.01); G02B 27/0172 (2013.01); G02B 27/10 (2013.01); G02B 27/28 (2013.01); G02B 2027/0138 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An eye tracking apparatus, characterized by comprising: a display screen, a display lens, and an eye tracking camera, the display screen and the display lens being oppositely disposed, and a displaying surface of the display screen facing the display lens;
wherein the eye tracking camera is disposed adjacent to an edge of the display screen, a view-finding side of the eye tracking camera faces the display lens, an included angle between an optical axis of the eye tracking camera and an optical axis of the display lens ranges from 8.5° to 9.5°, and the eye tracking camera receives light passing through the display lens,
wherein the display lens further comprises a polarizing film, a reflective polarizing film and a quarter-wave plate, wherein the reflective polarizing film and the quarter-wave plate are stacked at a side of the polarizing film proximal to the eye tracking camera, the reflective polarizing film is disposed between the quarter-wave plate and the polarizing film.