星载扫描层析临边成像光谱仪已成为空间大气遥感领域的迫切需求，根据临边宽水平覆盖轻小型星载扫描层析临边成像光谱仪的研究目标，采用一维扫描镜、离轴抛物面望远系统和非球面光栅光谱成像系统匹配，设计了一个视场0.75°×0.017°、相对孔径1/1.8、工作波段280~800 nm 的星载扫描层析临边成像光谱仪光学系统，利用光学设计软件CODE V 进行了光线追迹和优化设计，光谱成像系统不同波长的点列图直径的均方根(RMS)值均小于34 mm，光谱分辨率0.84 nm，满足的指标要求(≤1.2 nm)，扫描层析临边成像光谱仪全系统在空间方向各波长在特征频率处的光学传递函数均达到0.57以上，能够满足成像质量要求，适合空间大气遥感应用。

Space-based scanning tomographic limb imaging spectrometer is demanded urgently by space atmospheric remote sensing. Based on the research objective of spaced-based scanning tomographic limb imaging spectrometer with wide horizontal covering range and minor volume and mass, An optical system of space-based scanning tomographic limb imaging spectrometer is designed using one dimension scanning mirror, off-axis parabolic telescope and aspheric grating spectral imaging system. The field of view of hyspectral imager is 0.75°×0.017°, relative-aperture is 1/1.8, and working waveband is from 280 nm to 800 nm. Ray tracing, optimization are performed by CODE V software. The root mean square (RMS) spot diameter for different wavelengths is less than 34 mm for aspheric grating spectral imaging system. The spectral resolution is 0.84 nm, which satisfies the requirement of specification (≤1.2 nm). The modulaiton transfer function (MTF) for different wavelengths of imaging spectrometer is more than 0.57 at characteristic frequency in the spatial direction. The design results satisfy the requirements of imaging quality, which is suitable for the application of space-based remote sensing.