Title:
PROJECTION DEVICE, VEHICLE LAMP AND VEHICLE
Document Type and Number:
WIPO Patent Application WO/2023/109817
Kind Code:
A1
Abstract:
A projection device, applied to equipment such as a vehicle lamp, a projector and a head-up display device for projection or illumination. The projection device comprises a three-color light source (110), a collimation component (120), a spatial light modulation component (130), and a projection lens (140), wherein the three-color light source (110) is used for sending a three-color light beam to the collimation component (120). The three-color light beam comprises red light (R), green light (G) and blue light (B). The three-color light beam is collimated by means of the collimation component (120), and the collimated three-color light beam is sent to the spatial light modulation component (130), phase modulation is performed on the received three-color light beam by means of the spatial light modulation component (130), the modulated light beam is converged to a focal plane of the projection lens (140) to form a hologram (CGH) to be projected, and said hologram (CGH) is projected by means of the projection lens (140). The projection device can realize matching of multiple light shapes, and is low in cost, small in size and high in efficiency.
Inventors:
CHEN RUISHAN (CN)
ZHAO HAN (CN)
DENG NING (CN)
ZHAO HAN (CN)
DENG NING (CN)
Application Number:
PCT/CN2022/138708
Publication Date:
June 22, 2023
Filing Date:
December 13, 2022
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G03B21/00; G03B21/20; G03H1/00; G03H1/22
Foreign References:
| CN104155834A | 2014-11-19 | |||
| CN106524036A | 2017-03-22 | |||
| CN106227016A | 2016-12-14 | |||
| US20090207466A1 | 2009-08-20 | |||
| CN103425034A | 2013-12-04 | |||
| CN103309132A | 2013-09-18 | |||
| CN109789782A | 2019-05-21 | |||
| CN110325402A | 2019-10-11 | |||
| CN213517870U | 2021-06-22 |
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