F/1.2大口径非球面反射镜零位检验的补偿器设计

Null Compensator Design of F/1.2 Aspherical Mirror

为达到高分辨率以及像面照度要求,大口径非球面反射镜在空间红外系统中被广泛使用。设计了针对口径550 mm、F/1.2非球面的补偿器,基于三级像差理论分析计算了补偿器的初始结构参数。利用ZEMAX软件对补偿器进行了优化设计,最终所得补偿器的设计结果满足非球面检验要求。对补偿器结构参数进行了灵敏度及公差分析,结果表明该补偿器可用于实际加工检验。

To achieve high resolution and image illumination requirements,large aperture aspheric mirrors are widely used in space infrared systems.The compensator for a large aperture aspherical mirror is designed in this study.The initial structure parameters of the compensator are calculated based on the third-order aberration theory.These parameters are optimized by ZEMAX software,such that the optimized results meet the aspheric inspection requirements.The sensitivity and tolerance of the compensator parameters are analyzed,and results show that it is possible to manufacture the compensator.