优化设计了一种双环变迹镜。该变迹镜由同心的，交替排列的透光圆环和不透光圆环组成，经过双环变迹镜调制的光波入射至光学接收系统，后经光学成像系统将所接收的光波成像聚焦，数据采集与处理系统对电流信号进行采集和处理，得到沿测量路径的等晕角。这种变迹镜相对于国内现有的单孔径变迹镜，能够在所有高度很好的模拟孔径滤波函数W(z)≡cz5/3，所得等晕角相对误差明显较小，可以实现对等晕角的高精度测量。

A double loop optimization apodized lens was designed in this paper. The apodized lens was composed of a concentric alternating arrangement of the transparent ring and annular ring. After bicyclic apodization mirror modulated light is incident to the optical receiver system, the optical imaging system of the received light imaging focuses, data acquisition and processing system for collecting and processing curren signal, isoplanatic angle can be given along the measurement path. Relative to the domestic existing single aperture apodization mirror, the apodized lens is able to simulate the aperture filter function W(z)≡cz5/3 well at all. The relative error of the resulting isoplanatic angle is significantly smaller. The high-precision measurement of isoplanatic angle can be achieved.