失调同轴三反消像散系统消彗差补偿

发布时间：2018-05-10 16:25

本文选题：成像系统 + 消彗差　；参考：《光学学报》2015年10期

【摘要】：三阶彗差是同轴三反消像散(TMA)光学系统镜面失调产生的主要像差之一。使用矢量像差理论分析了同轴TMA光学系统失调后彗差变化特性,给出了次镜和三镜像差偏移矢量的求解方法及公式,并推导了系统次镜和三镜失调导致的彗差增量系数公式,证明了三镜在X-Y平面内偏心产生的彗差可以通过一个固定比例的次镜偏心量完全补偿,提出了次镜对偏心三镜的消彗差补偿条件、次镜和三镜各自的X-Y平面偏心无彗差条件。计算了同轴TMA光学系统中三镜失调的两个例子,在消彗差补偿条件下,经过次镜主动偏心补偿,全视场均值彗差增量仅为未失调前的0.6%和1.9%,证明了消彗差补偿条件的正确性。
[Abstract]:The third order coma is one of the main aberrations caused by the misalignment of the mirror surface of the coaxial three antialiasing astigmatism (TMA) optical system. Based on the theory of vector aberration, the characteristics of coma variation after misalignment of coaxial TMA optical system are analyzed. The method and formula for calculating the offset vector of secondary mirror and three-mirror difference are given, and the formula of increment coefficient of coma caused by misalignment of secondary mirror and three-mirror is deduced. It is proved that the coma caused by eccentricity of three mirrors in X-Y plane can be completely compensated by a fixed proportion of eccentricity of secondary mirror. The condition of compensating for eccentricity of secondary mirror to eccentric three mirror and the condition of eccentricity of secondary mirror and triple mirror are presented. Two examples of three-mirror misalignment in coaxial TMA optical system are calculated. Under the condition of canceling coma compensation and secondary active eccentricity compensation, the increment of mean coma in the whole field of view is only 0.6% and 1.9% of that before unmisalignment, which proves the correctness of the compensation condition for cancelling coma.
【作者单位】：中国科学院长春光学精密机械与物理研究所;中国科学院大学;
【基金】：国家863计划(863-2-5-1-13B)
【分类号】：TH74

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