消像差Offner成像光谱仪的研究进展

Progress of Offner imaging spectrometers for eliminating aberration

为了获得消像差Offner成像光谱仪,以三镜系统为基础综述了Offner成像光谱仪的各种消像差方法,介绍了由两块不同曲率半径凹面镜与凸面光栅构成的Offner成像光谱仪和狭缝与刻槽成不同方向的Offner成像光谱仪的消像差方法,并得到面内结构及正交结构两种成像光谱仪结构,其中正交结构在消像差方面更具优势,为获得高质量Offner成像光谱仪提供了理论基础。

Research background and optical structure of an Offner imaging spectrometer were introduced. Aberration of the Offner imaging spectrometer was analyzed by analytical point row graph theory, single grating aberration theory and light path function analysis method respectively. Two special structures （ surface inner structure and orthogonal structure） were put forward, which can allow imaging spectrometer with better image quality. It is the research trend to improve the image quality of an imaging spectrometer in the future.