用于空间相机的折轴三反系统的光学设计

为设计高分辨率可见光空间相机,研究了三反射式光学系统(TMA)设计过程中需要考虑的问题。通过对折轴三反射光学系统最终视场在像面上的分布,提出了偏视场、全视场和环形视场3种折轴三反光学形式,并进行了光学系统设计。设计了3种谱段位于500-800 nm,焦距f=6000 mm,F数为10的折轴三反光学系统,设计结果表明,3种系统成像质量均接近或达到衍射极限,可以满足高分辨率可见光空间相机的使用要求。并对3种折轴三反射光学系统的加工装配难度进行了分析和比较,可以作为其他大口径、长焦距空间相机光学设计的参考。

Abstract

To design high resolution remote camera optical system,this paper researched the issues in the during of the design of reflective optical system,proposed the three-mirror-anastigmat (TMA) optical systems of field bias,full field and annular field according to fields distributing,and finished its optical system design which was characterized by the spectrum band of 500-800 nm,focal length of 6000 mm and F number of 10. The result indicates that the image quality of the optical system approaches or reaches the diffraction limit,which can meet the demand for use of high resolution space cameras. Through analyzing and comparing the difficulty in fabricate and assembling of the three kinds of the three-mirror-anastigmat optical systems,it can be a special reference to the design of other large aperture and long focal length space telescope.

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李旭阳, 李英才, 马臻, 易红伟. 用于空间相机的折轴三反系统的光学设计[J]. 中国激光, 2009, 36(s2): 335. Li Xuyang, Li Yingcai, Ma Zhen, Yi Hongwei. Optical Design of Three-Mirror-Anastigmat with Fold Mirror for Space Camera[J]. Chinese Journal of Lasers, 2009, 36(s2): 335.

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