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首页> 外文会议>Conference on Light-Emitting Diode Materials and Devices; 20071112-14; Beijing(CN) >STUDY ON CHROMA BALANCE BASED ON GRATING SPECTROMETER FOR LED
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STUDY ON CHROMA BALANCE BASED ON GRATING SPECTROMETER FOR LED

机译：基于光栅分光光度计的色度平衡研究

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摘要

A standard white light compounding algorithm based on combination of chroma coordinates acquisition system with computer working current control system is presented for three-color LED. The chroma coordinates acquisition system consist of grating spectrometer and integrating sphere. The computer adjust and control the working current of three-color LED, then achieved chroma coordinates error between the compounded white light and standard white light D65, until the chroma coordinates is less than the threshold beforehand set by this technique. The compounded white light meet the chroma error demanded that is able to be changed, at the same time the chroma coordinates acquisition system and the working current control system are eliminated. The proposed algorithm the offset of central wavelength and the change of chroma coordinates due to working current variety for LEDs. Experimental results show that the proposed algorithm achieved lesser chroma error uv=0.001 relative to standard white light D65, enhanced chroma uniformity of illumination field.
机译：提出了一种基于色度坐标获取系统与计算机工作电流控制系统相结合的标准白光复合算法。色度坐标采集系统由光栅光谱仪和积分球组成。计算机调节并控制三色LED的工作电流，然后达到混合白光与标准白光D65之间的色度坐标误差，直到色度坐标小于此技术预先设置的阈值为止。混合后的白光满足了可以更改的色度误差要求，同时消除了色度坐标获取系统和工作电流控制系统。所提出的算法由于工作电流的变化而导致中心波长的偏移和色度坐标的变化。实验结果表明，相对于标准白光D65，该算法实现了较小的色度误差uv = 0.001，提高了照明场的色度均匀性。

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