"基于远心补偿的共心多尺度系统设计与优化"。

Far-field compensation, stable image plane, concentric multi-scale system design.docx Abstract The current concentric multi-scale system often suffers from the instability of the sub-camera image plane, which directly leads to image stitching misalignment in subsequent image stitching, seriously affecting the imaging quality of the system. In response to this issue, a method based on far-field optical path is proposed to improve the stability of the sub-camera image plane, reducing the pressure on the subsequent image stitching. Firstly, the reasons for misalignment are theoretically analyzed, and the theoretical analysis of the impact of introducing the far-field optical path on improving the imaging system is conducted. Finally, an excellent imaging performance based on far-field optical path concentric multi-scale imaging system is designed, with a focal length of 60 mm, an F number of 3, a far-field less than 0.2 mrad, a total field of view of 70°, and a spot size dispersion radius less than the selected detector pixel size. The modulation transfer function of each field of view is greater than 0.6 at 108 lp/mm. The far-field structure of the concentric multi-scale imaging system can improve the instability of the sub-camera image plane from the optical structure part, thereby improving the quality and efficiency of the backend image stitching, providing more ideas and technical approaches for the design of subsequent concentric multi-scale systems, and has important theoretical and practical significance.