US 12,265,217 B2
Display device and glasses
Zhentao Fan, Jiaxing (CN); Qingfeng Zhu, Jiaxing (CN); Lei Sui, Jiaxing (CN); and Kehan Tian, Jiaxing (CN)
Assigned to JIAXING UPHOTON OPTOELECTRONICS TECHNOLOGY CO., LTD., Jiaxing (CN)
Filed by Jiaxing UPhoton Optoelectronics Technology Co., Ltd., Jiaxing (CN)
Filed on Mar. 19, 2024, as Appl. No. 18/609,094.
Claims priority of application No. 202310674050.7 (CN), filed on Jun. 8, 2023.
Prior Publication US 2024/0411128 A1, Dec. 12, 2024
Int. Cl. G02B 27/00 (2006.01); F21V 8/00 (2006.01); G02B 27/01 (2006.01)
CPC G02B 27/0093 (2013.01) [G02B 6/0016 (2013.01); G02B 6/0035 (2013.01); G02B 6/0068 (2013.01); G02B 27/0172 (2013.01); G02B 27/0179 (2013.01); G02B 6/003 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/0178 (2013.01); G02B 2027/0187 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A display device, comprising:
an optical waveguide comprising a waveguide substrate, a coupling-in device and at least one coupling-out device, the coupling-in device and the coupling-out device being arranged on the waveguide substrate along a length direction of the waveguide substrate;
a first projector configured to project a first light with a wavelength of visible light wavelength to the coupling-in device;
a second projector configured to project a second light with a wavelength of second wavelength to the coupling-in device;
at least one light sensing assembly arranged corresponding to the coupling-out device, the light sensing assembly comprising at least one imaging device; and
a feedback tracking device electrically connected to the first projector and the light sensing assembly, respectively,
wherein the coupling-in device is used for coupling the first light and the second light into the waveguide substrate; the coupling-out device is used for coupling the first light and the second light at least partially out of the waveguide substrate to a human eye; the at least one light sensing assembly is used for receiving the second light reflected by the human eye; and the feedback tracking device is used for adjusting the first projector according to the second light received by the light sensing assembly such that the first light coupled out of the coupling-out device follows a line of sight of the human eye.