Physical model of “cat eye effect” and its certification

In an optical system,"cat eye effect" can be modeled as a focus lens sys-tem.Based on the model and Fourier transform,"cat eye effect" is proved while a laser beam is projected on a "eat eye effect" system at an arbitrary incident angle,it will re-turn along incident direction,Finally,the comparision of reflectance of"cat eye effect" objects and ordinary objects is made.