提出一种基于主成分分析法的装调方案;对理想的离轴三反系统的灵敏度矩阵进行处理,以获得系统失调量对残余像差敏感度的权重值,通过去除敏感度低的调整量来制定合理的装调方案;基于逆向优化法的计算机辅助装调技术原理,进行模拟装调及装调方案的验证。结果表明:采用所制定的装调方案可使装调精度达到10 ^-7量级,调整量从11个减少到6个,装调难度降低,光机结构的稳定性得到提高。

An alignment scheme based on the principal component analysis is proposed. The sensitivity matrix of ideal off-axis three-mirror anastigmatic system is processed to obtain weights of system misalignment to residual aberration sensitivity. The reasonable alignment scheme is formulated by removing adjustments with low sensitivities. Based on the principle of computer aided alignment technology of the reverse optimization method, the simulation alignment and the alignment scheme are verified. The results show that with the proposed alignment scheme, the alignment accuracy is up to 10 -7 magnitude, and the adjustment amount is reduced from 11 to 6. The alignment difficulty is reduced, and the stability of optical and mechanical structure is improved.