在利用漫反射板标定光谱辐亮度的实验装置中，标准灯完全可以近似为点光源。
For experimental setup to calibrate spectral radiance by applying a diffuse plane, the measured spectral radiance can be obtained through integral of spectral radiation flux entering the spectrometer.
选择了合适的测量方式，建立了铝漫反射板的相对双向反射向反射分布函数的测量装置。
The experimental setup for the measurement of aluminium diffuser's bidirectional reflectance distribution function has been established by choosing a proper illuminating and viewing method.
给出了正入射条件下铝漫反射板在紫外真空紫外波段的漫反射特性及硫酸钡和聚四氟乙烯（PTFE）漫反射板在紫外波段的漫反射特性；
Characteristics of a ground aluminium diffuse plate at ultraviolate vacuum ultraviolate(UV VUV)and that of a BaSO 4 and a polytetrafluoroethylene (PTFE) diffuse plate at UV are described.
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