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1. 发明申请

WO2008127593A1 COLOR TEMPERATURE TUNABLE WHITE LIGHT SOURCE 审中-公开
标题翻译：色温TUNABLE白光源
公开(公告)号：WO2008127593A1
公开(公告)日：2008-10-23
申请号：PCT/US2008/004567
申请日：2008-04-09
申请人： INTEMATIX CORPORATION , LI, Yi-Qun , DONG, Yi , XU, Xiofeng
发明人： LI, Yi-Qun , DONG, Yi , XU, Xiofeng
IPC分类号： H01J1/62
CPC分类号： H05B33/086 , F21K9/00 , H05B33/0818 , H05B33/0827
摘要： A color temperature tunable white light source comprises: first and second LED arrangements operable to emit light of first and second wavelength range respectively that are configured such that their combined light output, which comprises light generated by the source, appears white in color. One or both LED arrangements comprises a phosphor provided remote to an associated LED operable to generate excitation radiation and to irradiate the phosphor such that it emits light of a different wavelength range, wherein the light emitted by the LED arrangement comprises the combined light from the LED and phosphor. The color temperature of output white light is tunable by controlling the relative light outputs of the LED arrangements by for example controlling the relative magnitude of the drive currents of the LEDs or a duty cycle of a pulse width modulated drive current.
摘要翻译：色温可调白光源包括：第一和第二LED装置，其可操作以分别发射第一和第二波长范围的光，其被配置为使得它们的组合光输出（其包括由光源产生的光）看起来是白色的。一个或两个LED布置包括荧光体，远离相关联的LED，其可操作以产生激发辐射并且照射磷光体使得其发射不同波长范围的光，其中由LED装置发射的光包括来自LED的组合光和磷光体。通过例如控制LED的驱动电流的相对幅度或脉冲宽度调制的驱动电流的占空比来控制LED配置的相对光输出，可以调节输出白光的色温。

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