Title:
MICRO PROJECTION MODULE AND HEAD-MOUNTED DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/226711
Kind Code:
A1
Abstract:
A micro projection module, comprising: an illumination assembly (10) configured to provide polarized illumination light; a display chip (30) configured to modulate the polarized illumination light into polarized image light; a relay assembly (20) configured to transmit the polarized illumination light to the display chip (30) and transmit the polarized image light to a projection assembly (40), the relay assembly (20) comprising a polarization beam splitting assembly (22); and the projection assembly (40) configured to project the polarized image light into an image, the projection assembly (40) comprising a first projection sub-lens (411) and a second projection sub-lens (412), the first projection sub-lens (411) being arranged in an optical path between the polarization beam splitting assembly (22) and the display chip (30), the second projection sub-lens (412) and the first projection sub-lens (411) being arranged on two opposite sides of the polarization beam splitting assembly (22), and the optical axis of the second projection sub-lens (412) being in the same straight line as that of the first projection sub-lens (411).
Inventors:
LIU BINGYU (CN)
DU JIAWEI (CN)
LI WEI (CN)
LI HONG (CN)
DU JIAWEI (CN)
LI WEI (CN)
LI HONG (CN)
Application Number:
PCT/CN2023/092261
Publication Date:
November 30, 2023
Filing Date:
May 05, 2023
Export Citation:
Assignee:
NINGBO SUNNY OPOTECH CO LTD (CN)
International Classes:
G03B21/20; G02B27/01; G02B27/28
Foreign References:
| CN114063373A | 2022-02-18 | |||
| CN214795441U | 2021-11-19 | |||
| CN101614946A | 2009-12-30 | |||
| CN109283774A | 2019-01-29 | |||
| CN111435215A | 2020-07-21 | |||
| CN112987473A | 2021-06-18 | |||
| CN113009759A | 2021-06-22 | |||
| US20180084232A1 | 2018-03-22 |
Attorney, Agent or Firm:
SHANGHAI LIANYI INTELLECTUAL PROPERTY FIRM et al. (CN)
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