发明公开
- 专利标题: UNIFORM ILLUMINATION SYSTEM
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申请号: EP11171209.7申请日: 2002-12-13
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公开(公告)号: EP2420872A2公开(公告)日: 2012-02-22
- 发明人: Holman, Robert, L. , Cox, Arthur
- 申请人: QUALCOMM MEMS Technologies, Inc.
- 申请人地址: 5775 Morehouse Drive San Diego, CA 92121 US
- 专利权人: QUALCOMM MEMS Technologies, Inc.
- 当前专利权人: QUALCOMM MEMS Technologies, Inc.
- 当前专利权人地址: 5775 Morehouse Drive San Diego, CA 92121 US
- 代理机构: Dunlop, Hugh Christopher
- 优先权: US340453P 20011214
- 主分类号: G02B5/30
- IPC分类号: G02B5/30 ; H01L27/15 ; H05B33/12 ; G02B27/09 ; G02B27/14 ; G02B27/28 ; G02B6/00 ; G02F1/13357
摘要:
A compact and efficient optical system featuring planar multi-layered LED light source arrays concentrating their polarized or unpolarized output within a limited angular range. The optical system manipulates light emitted by a planar light emitters such as electrically-interconnected LED chips. Each light emitting region in the array is surrounded by reflecting side-walls whose output is processed by elevated prismatic films, polarization converting films, or both. The optical interaction between light emitters, reflecting sidewalls and the elevated prismatic films create overlapping virtual images between emitting regions that contribute to the greater optical uniformity. Practical illumination applications of such uniform light source arrays include compact LCD of DMD video image projectors, as well as general lighting, automotive lighting, and LCD backlighting.
公开/授权文献
- EP2420872A3 UNIFORM ILLUMINATION SYSTEM 公开/授权日:2012-05-02
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