US 12,001,025 B1
Optical lens assembly for near-eye display and near-eye display device
Youngshik Yoon, Cupertino, CA (US); Yi Zhang, Palo Alto, CA (US); Hongdong Li, Palo Alto, CA (US); John D. Le, Palo Alto, CA (US); Kun Gao, Palo Alto, CA (US); Hao Zheng, Palo Alto, CA (US); and Jianru Shi, Palo Alto, CA (US)
Assigned to TENCENT AMERICA LLC, Palo Alto, CA (US)
Filed by Tencent America LLC, Palo Alto, CA (US)
Filed on Jun. 15, 2023, as Appl. No. 18/336,014.
Int. Cl. G02B 27/01 (2006.01); G02B 5/30 (2006.01); G02B 27/09 (2006.01); G02B 27/28 (2006.01); G02B 27/42 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 5/3083 (2013.01); G02B 27/0955 (2013.01); G02B 27/283 (2013.01); G02B 27/4211 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical lens assembly for a near-eye display device, comprising:
a light box having a first layer facing a display screen of the near-eye display device and a second layer facing a diffractive optical element (DOE), the light box being configured to receive a first light from a display screen of the near-eye display device and transmit at least a portion of the first light to the DOE through a folded optical path, wherein the first layer and the second layer are flat; and
the DOE aligned with an optical axis of an eye and configured to receive a second light from the light box and converge the second light to the eye,
wherein the second layer of the light box comprises a first reflective polarizer, a second reflective polarizer, and a half-wave retarder placed in between the first reflective polarizer and the second reflective polarizer; and
a polarization selectivity of the first reflective polarizer being orthogonal to a polarization selectivity of the second reflective polarizer.