火星探测高分辨率可见光相机光学系统设计

The Optical System Design of the High-Resolution Visible Spectral Camera for China Mars Exploration

详细规划了首次火星探测有效载荷高分辨率可见光相机光学系统设计方案。阐述了火星探测高分相机的科学意义以及国外火星高分相机的发展趋势。据此对光学系统的选型进行了分析,从应用优势角度选择了COOK式离轴三反系统完成光学系统设计,光学系统焦距为4 600 mm,相机对孔径1:12,实现分辨率优于0.6 m@300 km,视场角优于2°的光学系统。从工程可实现性角度,完成了相机离轴非球面反射镜检测补偿器的设计。该光学系统可保证火星高分相机指标居国际领先水平。

In this paper , the optical system design of the high-resolution visible spectral camera for China first Mars exploration mission is planned. Firstly , the scientific meaning and the development trend of the Mars high-resolution camera is proposed. And then , by analyzing the application advantages of various optical systems , the Off-axis Cook system is selected to apply for the China Mars high-resolution camera. Besides , the aspherical mirror testing plan is proposed. By using the optical system , the optical system can guarantee the high-resolution camera reach the international advanced level.