发明名称 |
BELEUCHTUNGSSYSTEM |
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. |
申请公布号 |
AT428949(T) |
申请公布日期 |
2009.05.15 |
申请号 |
AT20050822479T |
申请日期 |
2005.12.02 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
HOELEN, CHRISTOPH;ANSEMS, JOHANNES;KUIPER, STEIN |
分类号 |
G02B6/42;F21V8/00;G02B26/00;H01L33/58;H01L33/60 |
主分类号 |
G02B6/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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