发明名称 |
ILLUMINATION DEVICE WITH ELECTRICAL VARIABLE SCATTERING ELEMENT |
摘要 |
The invention provides an illumination device (1), arranged to provide illumination device light (250). The illumination device (1) comprising a light chamber (100), an electrically variable scattering element (500), and a controller (600). The light chamber (100) contains a light emitting diode (10) (LED) arranged to emit LED light (20); comprises a luminescent material layer (200) arranged remote from the LED (10) and arranged to absorb at least part of the LED light (20) and emit luminescent material emission (220); and comprises an exit face (301), through which one or more of the LED light (20) and the luminescent material emission (220) may escape to the exterior (22) of the light chamber (100) thereby providing illumination device light (250). The electrically variable scattering element (500) is arranged downstream of the luminescent material layer (200) and upstream of the exit face (301). The controller (600) is electrically connected to the electrically variable scattering element (500) and arranged to control the scattering of the electrically variable scattering element (500). Such device may allow the possibility of colour tuning and/or correlated colour temperature tuning of the illumination device light.
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申请公布号 |
US2011176091(A1) |
申请公布日期 |
2011.07.21 |
申请号 |
US200913120168 |
申请日期 |
2009.09.16 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
BOONEKAMP ERIC;ANSEMS JOHANNES P. M.;VAN AS MARCO |
分类号 |
G02F1/1334;F21V9/16;G02F1/01 |
主分类号 |
G02F1/1334 |
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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