Title:
PROJECTION APPARATUS AND ILLUMINATION LIGHT DETECTION, AUXILIARY FOCUSING AND AMBIENT LIGHT DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/040720
Kind Code:
A1
Abstract:
A projection apparatus and an illumination light detection, auxiliary focusing and ambient light detection method, relating to the technical field of projection devices. The multiplexing lens projection apparatus comprises a lens module (110), a silicon-based liquid crystal element (120), a polarization light-splitting element (130), and an image sensor (140). The silicon-based liquid crystal element (120) is disposed behind the lens module (110), the polarization light-splitting element (130) is located between the lens module (110) and the silicon-based liquid crystal element (120), and the silicon-based liquid crystal element (120) is located at a first rear focus position (112) of the lens module (110). The image sensor (140) is located at a second rear focus position (114) of the lens module (110) under the action of the polarization light-splitting element (130), and is used for assisting in adjusting the distribution of illumination light incident on the silicon-based liquid crystal element (120). The present application facilitates improving the projection image performance of a projection system, and can also be applied to illumination light detection, auxiliary focusing and ambient light detection, thereby improving good use experience of a user.
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Inventors:
ZHAO PENG (CN)
GONG YINQIANG (CN)
LI YI (CN)
GONG YINQIANG (CN)
LI YI (CN)
Application Number:
PCT/CN2022/117527
Publication Date:
March 23, 2023
Filing Date:
September 07, 2022
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/00
Foreign References:
| CN105474092A | 2016-04-06 | |||
| CN103584836A | 2014-02-19 | |||
| CN103149698A | 2013-06-12 | |||
| CN105988270A | 2016-10-05 | |||
| CN201773223U | 2011-03-23 | |||
| US20090179827A1 | 2009-07-16 |
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