发光学报, 2010, 31 (6): 882, 网络出版: 2011-02-15
基于LED的光谱可调光源的光谱分布合成
Synthesis of Spectral Distribution for LED-based Source with Tunable Spectra
发光二极管 光谱分布 光谱合成 非负最小二乘解 LED spectral distribution spectral synthesis non-negative least squares solution
摘要
从实测的LED光谱分布出发, 对基于LED光谱可调光源进行了可行性验证。提出用非对称高斯分布函数的数学模型来拟合单个LED光谱分布,并以该数学模型为基础, 运用多种不同峰值波长的LED来合成所需要的光谱分布。在原理上实现了对任意目标光谱的最小二乘拟合, 使用不同峰值波长的单色LED分别对D65、溴钨灯、5 500 K理想黑体、日光照射下的标准白板的光谱分布进行拟合, 相关指数均在0.94以上。最后通过对数据的分析, 总结出在工程实践中必须注意的要点。
Abstract
The feasibility of spectral tunable LED-based light source was verified. The source is capable of producing any spectral distribution. According to the measured LED spectral distribution, an asymmetric Gaussian function model was proposed to fit the individual LED spectral distribution. A variety of different LEDs with different peak wavelengths were utilized to synthesize the required spectral distribution. In theory, the least square fitting for any spectrum is realized. The experimental results of synthesis of typical spectral distribution are satisfactory. Finally, based on the analysis of experimental data, this paper put forward some points for the engineering practice.
朱继亦, 任建伟, 李葆勇, 万志, 刘则洵, 李宪圣, 张艳琪, 叶钊, 全先荣. 基于LED的光谱可调光源的光谱分布合成[J]. 发光学报, 2010, 31(6): 882. ZHU Ji-yi, REN Jian-wei, LI Bao-yong, WAN Zhi, LIU Ze-Xun, LI Xian-sheng, ZHANG Yan-qi, YE Zhao, QUAN Xian-rong. Synthesis of Spectral Distribution for LED-based Source with Tunable Spectra[J]. Chinese Journal of Luminescence, 2010, 31(6): 882.
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