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Patent Searching and Data


Title:
PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/205786
Kind Code:
A1
Abstract:
A projection device comprises: a light source, a light guide tube (1), a first spherical lens (32), a second spherical lens (33), an aspheric lens (34), a TIR prism (31), and a digital micromirror device. The light source provides light to the light guide tube (1). The first spherical lens (32) and the second spherical lens (33) are coaxially provided on a light path of first emergent light emitted from the light guide tube (1). The first spherical lens (32) and the second spherical lens (33) converge the first emergent light. The aspheric lens (34) is provided on a light path of second emergent light emitted from the second spherical lens (33), converges the second emergent light, and projects the second emergent light to the TIR prism (31). The TIR prism (31) receives the second emergent light and reflects the second emergent light to the digital micromirror device. The digital micromirror device is used to receive and modulate the second emergent light reflected by the TIR prism, so as to perform projection.

Inventors:
WANG, Yu (No. 218 Qianwangang Road, Huangdao DistrictQingdao, Shandong 5, 266555, CN)
Application Number:
CN2019/075615
Publication Date:
October 31, 2019
Filing Date:
February 20, 2019
Export Citation:
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Assignee:
QINGDAO HISENSE LASER DISPLAY CO., LTD. (No. 218 Qianwangang Road, Huangdao DistrictQingdao, Shandong 5, 266555, CN)
International Classes:
G03B21/20; G02B27/18
Foreign References:
CN108459456A2018-08-28
CN108803219A2018-11-13
CN107656414A2018-02-02
CN106200239A2016-12-07
CN203259766U2013-10-30
CN102789122A2012-11-21
CN1415173A2003-04-30
Attorney, Agent or Firm:
BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (8F Building 11, No. 31 Jiaoda East Road Haidian District, Beijing 4, 100044, CN)
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