Title:
PROJECTION LENS AND LASER PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/228595
Kind Code:
A1
Abstract:
The present invention relates to the field of laser projection, and more particularly, relates to a projection lens and a laser projection device. The projection lens comprises: a galvanometer; and a refraction system and a reflection system sequentially arranged in a direction in which an incident image beam is transmitted. The galvanometer and the refraction system are positioned at the same side of the reflection system. The galvanometer is used to deflect the image beam. The refraction system is used to refract the image beam entering the refraction system to the reflection system. The reflection system is used to reflect the image beam entering the reflection system, and to image reflections from the image beam onto a projection screen. The invention can realize a compact laser projection device.
Inventors:
YIN LIANG (CN)
LI XIAOPING (CN)
LI XIAOPING (CN)
Application Number:
PCT/CN2020/089122
Publication Date:
November 19, 2020
Filing Date:
May 08, 2020
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G02B26/08; G03B21/16; G03B21/20
Foreign References:
| CN108710194A | 2018-10-26 | |||
| CN1797179A | 2006-07-05 | |||
| JP2008009180A | 2008-01-17 | |||
| US20070091410A1 | 2007-04-26 | |||
| US7184218B1 | 2007-02-27 | |||
| CN109270682A | 2019-01-25 |
Attorney, Agent or Firm:
QINGDAO LAWSCI INTELLECTUAL PROPERTY CO., LTD. (CN)
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