一、引言在辐射计量工作中,光源光谱辐射特性的测定占很重要的地位。可以有两种方法来确定光源的光谱辐射特性:一种是标准光源法,一种是标准探测器法。前者是把待测光源和标准光源在同一光谱辐射计上进行比较,以得出待测光源的光谱辐射特性。后者是用标准探测器和光谱辐射计测得待测光源的光谱辐射分布,然后根据预先测得的光谱辐射计传递特性进行修正。一般情况下,光谱辐射计的光谱传递特性难以准确测得,与标准光源法相比,这种方 I. INTRODUCTION In the radiation measurement work, the determination of the spectral radiation characteristics of the light source occupies a very important position. There are two ways to determine the spectral radiation characteristics of a light source: one is the standard light source method and the other is the standard detector method. The former is to be tested light source and standard light source in the same spectral radiometer to compare to be measured light source spectral radiation characteristics. The latter uses a standard detector and a spectroradiometer to measure the spectral radiance distribution of the light source to be measured and then corrects it based on the pre-measured spectral radiometer transfer characteristics. Under normal circumstances, the spectral transmission spectrometer difficult to accurately measure the spectral characteristics, compared with the standard light source method, this square