三基色白光LED的配色及其温度稳定性研究  

Study of Color Matching and Temperature Stability of Tri-chromatic White LED

作　　者：武华[1] 苏治平[1] 张文博[1] 

机构地区：[1]赣南师范大学物理与电子信息学院,江西赣州341000

出　　处：《赣南师范大学学报》2017年第3期45-49,共5页Journal of Gannan Normal University

基　　金：国家自然科学基金(61650404;51377025);赣南师范大学校级科研课题(13kyz12;16z604)

摘　　要：采用混色的方法对三基色白光发光二极管进行了配色研究,在可见光范围内将不同峰值波长、半宽和功率的基色光进行混色,得到显色指数和光视效能与峰值波长、半宽和功率配比的关系.同时通过对功率配比进行调整来提高三基色白光LED的温度稳定性.结果表明,当温度由300 K上升到475 K的过程中,按显色指数达到最高值和色品坐标不漂移进行调整时,三基色白光LED的显色指数分别维持在85和82以上.In this paper, we studied the color matching of tri-chromatic white LEDs by mixing primary colors. The relationship of color rendering index （CRI） , luminous efficacy of radiation with the peak emission wavelength, spectral width and power ratio were ob- tained in the region of visible light with mixing primary colors. At the same time, temperature stability of tri-chromatic white LEDs could be improved by adjusting the power ratio. With the temperature increasing from 300 K to 475 K, the results show that high CRI 〉 85 and CRI 〉 82 can be maintained as the CRI on the highest value and the chromaticity point conserved, respectively.

关 键 词：白光发光二极管 温度稳定性 显色指数 光视效能 相关色温 

分 类 号：TN312.8[电子电信—物理电子学]