根据高分辨力、大视场的要求，考虑到市售探测器的限制，提出了视场分离分光的方法，分析了视场分离分光的原理。利用此方法设计了一个星载高分辨力、大视场高光谱成像仪光学系统，该系统由11.42°远心离轴三反消像散(TMA)望远系统和2 个Offner 凸面光栅光谱成像系统组成，运用光学设计软件CODE V 对高光谱成像仪光学系统进行了光线追迹和优化，并对设计结果进行了分析，分析结果表明，光学系统在各个谱段的光学传递函数均达到0.7 以上，完全满足设计指标要求。

Based on the requirements of high resolution and wide field of view, considering the restrictive off-the-shelf detectors, the design method of split Field of View (FOV) is developed. The principle of split FOV is analyzed. A spaceborne high resolution hyperspectral imager with wide FOV is designed using the method. The hyperspectral imager are composed of a 11.42° telecentric off-axis Three-Mirror Anastigmatic (TMA) telescope and two Offner convex grating spectral imaging system. Ray tracing, optimization and analyzing are performed by CODE V software. The analyzed results demonstrate that the Modulation Transfer Function (MTF) for different spectral band is more than 0.7, which satisfies the pre-designed requirement.