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    • 14. 发明申请
    • A COLOR CONTROLLED LIGHT SOURCE AND A METHOD FOR CONTROLLING COLOR GENERATION IN A LIGHT SOURCE
    • 一种颜色控制的光源和一种用于控制光源中颜色生成的方法
    • WO2008050294A1
    • 2008-05-02
    • PCT/IB2007/054306
    • 2007-10-23
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHSCHULZ, VolkmarACKERMANN, BerndFERI, Lorenzo
    • SCHULZ, VolkmarACKERMANN, BerndFERI, Lorenzo
    • H05B33/08
    • H05B33/0869H05B33/0818Y02B20/341
    • This invention relates to a color controlled light source comprising a plurality of colored light elements; a detector for detecting the light output of the light source and generating a detection signal; and a color control unit for generating driving signals to said light elements on the basis of said detection signal and a predetermined target color point of the light output of the light source. In order to enable detection of contributions from individual light elements to the light output of the light source, the light source further comprises a modulator for individual signature modulation of the driving signal to each one of said light elements; and a corresponding demodulator for demodulation of said detection signal and generation of actual, i.e. measured, values of the output of the individual light elements. The color control unit determines nominal values of the light output of each light element for obtaining said target color point, and compares the actual values with the nominal values. If there is a difference, it adjusts the driving signals in order to minimize the difference.
    • 本发明涉及一种包含多个有色光元件的色控光源; 用于检测光源的光输出并产生检测信号的检测器; 以及颜色控制单元,用于根据所述检测信号和光源的光输出的预定目标色点产生对所述光元件的驱动信号。 为了能够检测来自各个光元件对光源的光输出的贡献,光源还包括调制器,用于将驱动信号单独地签名调制到每个所述光元件; 以及相应的解调器,用于解调所述检测信号并产生实际的,即测量的各个光源的输出的值。 颜色控制单元确定用于获得所述目标色点的每个光元件的光输出的标称值,并将实际值与标称值进行比较。 如果存在差异,则会调整驱动信号,以最小化差异。