LED大屏幕空间显色恒定性

通过两组三基色LED(发光二极管 )样品色度和光强空间分布的测量 ,计算了由这两组LED制作的大屏幕再现的D6 5白平衡点、我国青年女性面部肤色、红旗丝织绸、蓝布和绿滤色片等五种色样在CIELUV均匀颜色空间的色度随观察角 ( 0°～ 70°)的变化及其与正向 ( 0°)再现色之间的色差。结果表明 ,LED单管光强随观察角的变化幅度和三基色管光强空间分布特性的一致性是影响大屏幕空间显色恒定性的主要因素。在确定大屏幕空间显色恒定性允差后 ,可用文中提供的方法对制作大屏幕的LED进行筛选。

Space color constancy of LED large screen

The colourimetricities and the space distribution of luminous intensity of two groups LED samples with three basic colours were measured. The variation of display colorimetricities of five colour samples including the D65 white balance, the complexion of Chinese youth females, the red silk of flag, the blue cloth and the green filter with the change of observing angle within 0°～70° and the colour-differences between right and other observing angles were calculated. The results show that the major factors effecting the space colour constancy are the variation magnitude of luminous intensity emitted by a single diode when the observing angle changes and the consistency of the space distribution characterization of three basic colour diodes. Given the allowance of space colour constancy, the riddling of LED for large screen display can be made using the method.