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Title:
PROJECTION SYSTEM AND TIR PRISM GROUP
Document Type and Number:
WIPO Patent Application WO/2019/104915
Kind Code:
A1
Abstract:
A projection system and a TIR prism group, the projection system comprising: an illumination light source (21), a TIR prism group (22), a DMD chip (23) and a projection lens (24), the TIR prism group (22) is provided between the illumination light source (21) and the projection lens (24); a reflective film is provided in the TIR prism group (22), such that an illumination light beam emitted from the illumination light source (21) is parallel or coincident with an optical axis of a projection light beam which is emitted to the projection lens (24) after light path converting by means of the TIR prism group (22), enabling the illumination light source (21), the TIR prism group (22) and the projection lens (24) to be arranged in a straight line. The projection system of the present invention is capable of reducing the size of a DLP projector without affecting the projection performance.

Inventors:
GAO, Zhiqiang (Room 201, Block A No. 1, Qian Wan Road One, Shenzhen-Hongkong Cooperation Zone, Qian Hai Distric, Shenzhen Guangdong 0, 518000, CN)
YEUNG, Steve (Room 201, Block A No. 1, Qian Wan Road One, Shenzhen-Hongkong Cooperation Zone, Qian Hai Distric, Shenzhen Guangdong 0, 518000, CN)
ZHAO, Yuan (Room 201, Block A No. 1, Qian Wan Road One, Shenzhen-Hongkong Cooperation Zone, Qian Hai Distric, Shenzhen Guangdong 0, 518000, CN)
LIN, Qingyun (Room 201, Block A No. 1, Qian Wan Road One, Shenzhen-Hongkong Cooperation Zone, Qian Hai Distric, Shenzhen Guangdong 0, 518000, CN)
Application Number:
CN2018/080694
Publication Date:
June 06, 2019
Filing Date:
March 27, 2018
Export Citation:
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Assignee:
IVIEW DISPLAYS (SHENZHEN) COMPANY LTD (Room 201, Block A No. 1, Qian Wan Road One, Shenzhen-Hongkong Cooperation Zone, Qian Hai Distric, Shenzhen Guangdong 0, 518000, CN)
International Classes:
G03B21/20; G02B17/08
Foreign References:
CN105589285A2016-05-18
CN101311816A2008-11-26
CN102799055A2012-11-28
Attorney, Agent or Firm:
LIUJIA CHINA IP LAW OFFICE (Room 207, Shangqi Building 4050# Nanhai Road Nanshan Distric, Shenzhen Guangdong 7, 518057, CN)
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