Title:
IMAGING MODULE AND AUGMENTED REALITY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/148171
Kind Code:
A1
Abstract:
An imaging module and an augmented reality device. The imaging module comprises: a light engine (20); an optical waveguide (10), which comprises a light-transmitting substrate (11), and an incident grating (12) and an emergent grating (13) that are arranged on the light-transmitting substrate (11), the incident grating (12) being arranged corresponding to the light engine (20); and a diffraction imaging element (30), which is located on a light-emergent path of the optical waveguide (10) and is arranged opposite the emergent grating (13). Physical limitations, which are brought about by a product, on conditions such as a high refractive index of a light-transmitting substrate material, can be reduced by means of the solution, thereby enlarging the field of view of the product, improving the luminous efficiency of the product, and enhancing the brightness uniformity of the product.
Inventors:
LI KUN (CN)
RAO YI (CN)
LIU DEAN (CN)
RAO YI (CN)
LIU DEAN (CN)
Application Number:
PCT/CN2021/133056
Publication Date:
July 14, 2022
Filing Date:
November 25, 2021
Export Citation:
Assignee:
GOERTEK INC (CN)
International Classes:
G02B27/01
Foreign References:
| CN110161701A | 2019-08-23 | |||
| CN104614857A | 2015-05-13 | |||
| CN112649963A | 2021-04-13 | |||
| CN107966820A | 2018-04-27 |
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