LED广色域投影显示系统实时色域校准的研究  

Real-time color gamut calibration of wide color gamut projection display system based on LED

作　　者：张鸣杰[1] 王蔚生[1] 邱崧 徐佳[1] 

机构地区：[1]华东师范大学电子科学技术系,上海200062

出　　处：《应用光学》2009年第1期38-43,共6页Journal of Applied Optics

基　　金：福建省科技重点项目(2005H065)

摘　　要：针对LED广色域投影显示系统中色域过大带来颜色失真的问题,在时序工作方式中,采用在一个基色光工作时,同时加入一定比例的其他基色光作为辅助光,将该基色光的色品坐标移到所需位置的色域校准方法。另外,为了避免LED一致性差异和环境温度变化及工作时间对LED主波长和色品坐标造成的影响,提出利用一组XYZ色度传感器实时测量并反馈三基色LED色品坐标的方法。该方法通过对色域校准算法编程实现实时色域校准,达到了正确显示颜色的目的。To overcome the color distortion caused by wide color gamut in projection display system based on LED, a new color gamut calibration method is presented. In the time sequence display mode, in order to move the chromaticity coordinates of the trichromatic light to the proper position, other proportional trichromatic light is also introduced as an auxiliary light while a trichromatic light is adopted. A set of XYZ LED sensors is proposed to measure and feedback the chromaticity coordinates of trichromatic LED in real time so as to avoid the difference of LED consistency and the impact of environmental temperature fluctuation and the operation duration on the major wavelength and chromaticity coordinates of LED. The real-time color gamut correction was realized and the proper display color was achieved through the programming of the calibration algorithm.

关 键 词：广色域 LED投影系统 实时校准 FPGA 

分 类 号：O432.3[机械工程—光学工程] TN312.8[理学—光学]