大口径拼接式合成孔径光学系统设计

在三反消像散系统基础上，介绍了一种大视场长焦子孔径合成光学成像系统的设计方法。在对子出瞳波前利用菲涅尔衍射直接积分叠加的基础上进行像质评估，以实现对拼接镜面的全面仿真和分析；用非序列面误差分析和分配的结果修改初始结构；通过高次曲面平衡象差，并在结构优化时使用较小F数的系统，增加结构对子镜的失调的误差冗余度，迭代完成系统的最终设计。设计了一个同轴三反子孔径合成光学成像系统，焦距44m，f/8，7子镜拼接，视场角达0.6°×0.06°，通过不断迭代，获得了较好的结构和成像质量。

Optical design of Large Aperture Segmented Mirror system

based on the aberration balance of Three-Mirror-Anastigmatic (TMA), a kind of segmented optical design way is introduced, with long focal length, wide field of view (FOV). Segmented system is completely simulated and analyzed by using the way of Fresnel diffraction integral for the exit pupil wavefront; the initial design is modified result from the error analysis and distribution of non-sequential surface; the high order asphere & bigger aperture system is optimized to balance the aberration and make the system more redundancy. A segmented synthetic aperture optical system is designed, whose primary mirror is segmented, EFL 44m, f/8, 0.6°×0.06° FOV. Iterating the design scheme and error analysis, a good design is obtained.