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Title:
POLARIZATION MODULATION DEVICE AND METHOD FOR STEREOSCOPIC PROJECTION LIGHT, AND STEREOSCOPIC IMAGE PROJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/201020
Kind Code:
A1
Abstract:
Disclosed by the present invention are a polarization modulation device and method for stereoscopic projection light, and a stereoscopic image projection system. The device comprises a polarization beam splitting assembly, a first optical path direction adjusting assembly, a second optical path direction adjusting assembly and a polarization state modulation assembly, wherein the polarization beam splitting assembly may split a projected light beam carrying image information into a first transmitted light beam, a second transmitted light beam, a first reflected light beam, and a second reflected light beam that have four different polarization states or that have three different polarization states. Compared to existing technology, by means of dividing a light beam corresponding to a complete image screen into two reflected light beams when polarized, the present invention may effectively reduce the optical path difference between a reflected light beam and a transmitted light beam in contrast with a double optical path polarization splitting method having only one reflected light beam, such that a subsequent optical path direction adjusting assembly and optical path compensation assembly may be selected in a smaller size, thereby greatly reducing the overall size of the device.

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Inventors:
TANG SHU TUEN (CN)
PALMER STEPHEN JOHN (CN)
CHOW KENNY WING YIP (CN)
Application Number:
PCT/CN2019/076800
Publication Date:
October 24, 2019
Filing Date:
March 04, 2019
Export Citation:
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Assignee:
SHENZHEN TIMEWAYING TECH CO LTD (CN)
VOLFONI R&D SARL (FR)
International Classes:
G02B30/25; G03B21/14; G03B21/28; H04N9/31; H04N13/337
Foreign References:
CN108427209A2018-08-21
CN203705728U2014-07-09
CN104954775A2015-09-30
CN203405635U2014-01-22
CN103616772A2014-03-05
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
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