Title:
MINIATURE PROJECTION LIGHT ENGINE, POLARIZATION MULTIPLEXING DEVICE, AND METHOD FOR IMPROVING LIGHT ENERGY UTILIZATION RATE
Document Type and Number:
WIPO Patent Application WO/2020/093936
Kind Code:
A1
Abstract:
A miniature projection light engine, a polarization multiplexing device (10), and a method for improving a light energy utilization rate. The polarization multiplexing device (10) is used to convert non-polarized light into polarized light having the same polarization state, and comprises a set of polarization multiplexing units (11). All of the polarization multiplexing units (11) are arranged in an end-to-end fashion, wherein each of the polarization multiplexing units (11) has an incident surface (1101) and an emergent surface (1102) disposed opposite to the incident surface (1101), and comprises an optical converter element (113), an optical splitter assembly (111), and an optical reflector assembly (112). The optical converter element (113) converts first polarized light (201) into second polarized light (202). The optical splitter assesmbly (111) is located on one side of the optical converter element (113), and splits non-polarized light incident on the incident surface (1101) into the second polarized light (202), emitted from the emergent surface (1102), and the first polarized light (201) directed toward the optical converter element (113). The reflector assembly (112) is located on the other side of the optical converter element (113), and reflects the second polarized light (202) converted by the optical converter element (113), such that the second polarized light (202) is emitted from the emergent surface (1102).
Inventors:
CHEN HANG (CN)
HAO XIYING (CN)
HU ZENGXIN (CN)
HAO XIYING (CN)
HU ZENGXIN (CN)
Application Number:
PCT/CN2019/114930
Publication Date:
May 14, 2020
Filing Date:
November 01, 2019
Export Citation:
Assignee:
SUNNY OPTICAL ZHEJIANG RES INST CO LTD (CN)
International Classes:
G02B27/28; G02B27/01
Foreign References:
| US7529024B1 | 2009-05-05 | |||
| US7529024B1 | 2009-05-05 | |||
| US5650873A | 1997-07-22 | |||
| CN108490617A | 2018-09-04 | |||
| CN101080658A | 2007-11-28 | |||
| US20090052031A1 | 2009-02-26 | |||
| CN107329273A | 2017-11-07 |
Attorney, Agent or Firm:
NINGBO RAYMOND IP AGENCY FIRM (CN)
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