光谱可调积分球光源的光谱匹配算法研究

胡友丽; 袁银麟; 吴浩宇; 郑小兵

doi:doi:10.5768/jao201435.0303007

应用光学, 2014, 35 (3): 472, 网络出版: 2014-06-03

光谱可调积分球光源的光谱匹配算法研究

Spectral matching algorithm of spectrum-tunable integrating sphere light source

论文大纲

胡友丽 ^*袁银麟吴浩宇郑小兵

作者单位

中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室，安徽合肥 230031

辐射度学光谱可调光源 Levenberg-Marquardt算法相对光谱差异 radiometry spectrum-tunable light source Levenberg-Marquardt algorithm relative spectrum difference LED LED

摘要

基于光谱匹配算法是可调光源产生种类多样光谱分布的必要手段，提出Levenberg-Marquardt算法作为光谱匹配算法。利用峰值位置等间隔均匀分布的理想高斯曲线作为LED发光光谱，借助该设定的一系列曲线仿真模拟目标光谱，实验表明，利用该算法模拟太阳、沙漠、海洋和植被的相对光谱分布，相对光谱差异分别为2.17%、1.76%、2.03%、1.7%。利用实验室现有LED的发光光谱进行验证实验，匹配3种目标光谱的相对差异均小于5%。实验结果表明，Levenberg-Marquardt算法可应用于光谱可调积分球光源的光谱匹配。

Abstract

Spectrum-tunable light source is an integrating sphere source illuminated by a large number of LEDs with different spectral peaks and distributions. The spectral matching algorithm is an essential approach to produce varieties of spectra. Levenberg-Marquardt algorithm was proposed and a series of simulations using Gaussian curves with an equal interval were conducted. The results of simulations show that Levenberg-Marquardt algorithm can make spectrum-tunable source produce solar, dessert,ocean and vegetation spectrum, respectively, the relative spectrum differences are 2.17% , 1.76% , 2.03% and 1.7%,respectively. The validating experiment for a number of target distributions was performed, and the relative spectral differences are all no more than 5%. The experiment verifies that it is feasible to produce different spectral distributions by using Levenberg-Marquardt algorithm for spectrum-tunable integrating sphere light source.

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胡友丽, 袁银麟, 吴浩宇, 郑小兵. 光谱可调积分球光源的光谱匹配算法研究[J]. 应用光学, 2014, 35(3): 472. HU You-li, YUAN Yin-lin, WU Hao-yu, ZHENG Xiao-bing. Spectral matching algorithm of spectrum-tunable integrating sphere light source[J]. Journal of Applied Optics, 2014, 35(3): 472.

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