根据矢量场的光线追迹方法和光路的几何关系, 推导得出入射高度(归一化)、折射率和逆反发散角之间的变化关系, 以逆反发散角最小为目的, 得出“猫眼”逆反射器的最佳设计参数, 并利用ZEMAX进行光学设计。基于三维琼斯矩阵法对所设计的“猫眼”逆反射器进行了偏振光线追迹和偏振特性研究, 重点分析了“猫眼”逆反射器的位相延迟和二向衰减特性及其对光束偏振态的影响, 理论计算表明: “猫眼”逆反射器在出瞳面上的位相延迟最大不超过0.3°, 二向衰减均低于0.027, 且线偏振态入射“猫眼”逆反射器, 出射仍为线偏振态, 即偏振方向保持不变。对此, 利用FRED对所设计的“猫眼”逆反射器进行了以水平、45°、圆、椭圆偏振态入射的仿真模拟, 验证其理论分析的正确性。结果表明: 经“猫眼”逆反射器逆反后的偏振态仍与入射偏振态相同, 偏振方向不发生改变, 这与理论计算结果相一致, 即“猫眼”逆反射器具有保偏振态不变的效应, 这对“猫眼”逆反射器的推广应用具有重要意义。

According to the ray tracing method of the vector field and the geometrical relation of the optical path, the relations between normalized incident height, refractive index and divergence angle have been deduced. With the aim of minimizing the divergence angle, the optimum design parameters of cat′s eye retroreflector have been obtained, and optical design of cat′s retroreflector have been performed by ZEMAX. The polarization ray tracing and polarization properties analysis of cat′s eye retroreflector were carried out based on the three-dimensional Jones matrix method, and the retardance and diattenuation of cat′s eye retroreflector in the exit pupil of cat′s eye retroreflector and the influences on the output polarization state were analyed. The calculation results had shown that the maximum values of retardance and diattenuation were 0.3° and 0.027, which have no effect on the output polarization state. The FRED software was used to simulate the situation of cat′s eye retroreflector with input horizontal, 45° linear and circular, elliptical polarization states, to verify the correctness of previous theoretical analysis. The simulation results have indicated that the output polarization state is the same as that of the input polarization state through cat′s eye retroreflector, that is to say, cat′s eye retroreflector has the polarization state-preserving effect, which is significant for the expand application for cat′s eye retroreflector.