发明授权
- 专利标题: Illumination system
- 专利标题(中): 照明系统
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申请号: US11721096申请日: 2005-12-02
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公开(公告)号: US07658528B2公开(公告)日: 2010-02-09
- 发明人: Christoph Gerard August Hoelen , Johannes Petrus Maria Ansems , Stein Kuiper
- 申请人: Christoph Gerard August Hoelen , Johannes Petrus Maria Ansems , Stein Kuiper
- 申请人地址: NL Eindhoven
- 专利权人: Koninklijke Philips Electronics, N.V.
- 当前专利权人: Koninklijke Philips Electronics, N.V.
- 当前专利权人地址: NL Eindhoven
- 优先权: EP04106435 20041209
- 国际申请: PCT/IB2005/054012 WO 20051202
- 国际公布: WO2006/061752 WO 20060615
- 主分类号: F21V9/00
- IPC分类号: F21V9/00 ; G02B1/06
摘要:
An illumination system has a plurality of light emitters (R5G5B), a first light-collimator (1) for collimating light emitted by the light emitters, and at least a second light-collimator (2) for collimating light emitted by the light emitters. The first light-collimator is arranged around a longitudinal axis (25) of the illumination system, and second light-collimator is being arranged around the first light-collimator along the longitudinal axis. Light propagation in the first light-collimator on total internal reflection. Light propagation in the second light-collimator is based on total internal reflection or on reflection at an outer surface of the second light-collimator facing away from the longitudinal axis. The cavity (3) is provided between the first and the second light-collimator. The cavity is provided with a switchable element based on electrowetting, wherein the switchable optical element is switchable in a mode of operation reducing the effect of the second light-collimator.
公开/授权文献
- US20090262536A1 ILLUMINATION SYSTEM 公开/授权日:2009-10-22