Big-view-field reverse modulation cat-eye optical system approaching to diffraction limit

The invention discloses a reverse modulation cat-eye optical system, and the system employs six spherical mirrors which are simple and are easy to machine. The big-view-field reverse modulation cat-eye optical system approaching to diffraction limit can be obtained through the parameter optimization design according to the specific demands, and the system guarantees the good modulation effect of alight beam with the big incidence angle, can approach the diffraction limit at the same time, and guarantees the good backtracking characteristics. Moreover, the system guarantees the small F-number,can achieve the matching with a small-size modulator, guarantees the modulation contrast, and is better in link stability. In addition, the system is small in wavefront distortion, is good in energyconcentration ratio, can be widely used in the field of reverse modulation laser communication, is small in size, is high in applicability, and is low in cost. 本发明公开了种逆向调制猫眼光学系统，采用简单易加工的六片球面镜，根据特定的需求通过参数优化设计，可得到大视场接近衍射极限的逆向调制猫眼