为了确定凸面光栅成像光谱仪的光谱特性,需要对凸面光栅成像光谱仪进行光谱定标。基于单色准直光法设计了一套全视场光谱定标系统,引入球面镜提供准直光,采用一块可以自由滑动和转动的折转镜改变定标光线的入射角,实现了全谱段自动化光谱定标。运用光学设计软件CODEV对光谱定标系统进行了部分光学模拟,证明了整个系统的可靠性。结合光谱定标系统的结构和特点,对整个光谱定标系统进行了精度分析。理论分析结果表明,该系统的光谱定标精度优于1%。该定标系统具有体积小、通用性强等特点,可为其他成像光谱仪的光谱定标提供参考。

In order to determine spectral characteristics of the imaging spectrometer with convex grating,spectral cal-ibration is required.A spectral calibration system of full field is designed which is based on the method of collimated mon-ochromatic light.A spherical mirror is used to provide collimated light,and a freely sliding and rotating folding mirror isused to change the angle of incident light.The automation of the calibration system has been realized.The CODEV resultof optical simulation proves the whole system is reliability.Analysis is done combined with structure and characteristics ofthe entire spectral calibration system.The result shows that the system spectral calibration’s accuracy is better than 1%.The calibration system has many advantages such as small size,better commonality and so on.It may provide referencesfor others.