基于标准探测器研究标准灯光谱辐照度和漫反射板双向反射分布函数随波长的变化

杨小虎; 王淑荣; 黄煜; 曲艺; 林冠宇

doi:doi:10.3788/aos201131.0612008

光学学报, 2011, 31 (6): 0612008, 网络出版: 2011-05-31

基于标准探测器研究标准灯光谱辐照度和漫反射板双向反射分布函数随波长的变化

Wavelength Dependence of the Spectral Irradiance of Standard Lamp and Bi-Reflection Distribution Function of Diffuser Based on Standard Detectors

论文大纲

杨小虎 ^1,2,*王淑荣 ¹黄煜 ¹曲艺 ¹林冠宇 ¹

作者单位

¹ 中国科学院长春光学精密机械与物理研究所，吉林长春 130033

² 中国科学院研究生院，北京 100049

摘要

用光谱辐照度标准灯的光谱辐照度标定内部照明的积分球开口光谱辐亮度，这一技术目前已比较成熟，通过两种方式推导出的传递仪器光谱辐亮度响应度之比随波长而变化。针对这一现象，构建了基于标准探测器的绝对辐亮度计和绝对辐照度计。用所构建的绝对辐射计在4个波长处标定光谱辐照度标准灯及标准漫反射板的变化情况，得出标准灯实际光谱辐照度值比自身标定值大，漫反射板实际双向反射分布函数(BRDF)比自身标定BRDF小的结论。将实际光谱辐照度及BRDF分别修正到积分球光谱辐亮度及传递仪器光谱辐亮度响应度中，修正后的传递仪器光谱辐亮度响应度之比随波长变化而趋于常数1。不确定度分析表明，在4个波长处光谱辐亮度定标中合成标准不确定度为0.884%~1.217%，光谱辐照度定标中合成标准不确定度为0.768%~1.136%。

Abstract

In the normal spectral radiance calibration of the internal illumination integrating sphere based on the spectral irradiance of the standard lamp, a deviation changing with wavelength exists in the ratio of instrument′s spectral radiance responsivities derived by two methods. The absolute radiance and irradiance radiometers based on the standard detectors are built up. By calibrating standard lamp of spectral irradiance and standard diffuser with these apparatuses at four wavelengths, it is found that the actual spectral irradiance of the standard lamp is greater while the actual bi-reflection distribution function (BRDF) of the diffuser is smaller than the self-calibrated value. After correcting the standard spectral irradiance and BRDF to the spectral radiance of the integrating sphere and the instrument′s spectral radiance responsivity, the ratio derives to constant 1. Analysis shows a combined standard uncertainty of 0.884%~1.217% for the spectral radiance and 0.768%~1.136% for the spectral irradiance measurement at the four wavelengths.

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杨小虎, 王淑荣, 黄煜, 曲艺, 林冠宇. 基于标准探测器研究标准灯光谱辐照度和漫反射板双向反射分布函数随波长的变化[J]. 光学学报, 2011, 31(6): 0612008. Yang Xiaohu, Wang Shurong, Huang Yu, Qu Yi, Lin Guanyu. Wavelength Dependence of the Spectral Irradiance of Standard Lamp and Bi-Reflection Distribution Function of Diffuser Based on Standard Detectors[J]. Acta Optica Sinica, 2011, 31(6): 0612008.

基于标准探测器研究标准灯光谱辐照度和漫反射板双向反射分布函数随波长的变化

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