激光辐照光学镜头猫眼效应反射率测试

 为了验证普通光学镜头猫眼效应的存在性和应用可行性，利用532 nm激光辐照调焦范围为12～72 mm的普通摄像镜头，测试了猫眼效应绝对反射率及其与镜头焦距、F数、入射角等参数的关系。采用双光路同时测量法，解决了猫眼效应反射光与入射光相互干扰不易测试的问题。结果表明，该镜头的猫眼效应绝对反射率最高可达35.87 ％，并且与焦距正比，与F数和入射角成反比；近场时的几何发散角与焦距和F数成反比。

Reflectivity test of cat eye effect with laser irradiating on optical lens

In order to validate the cat eye effect and its application feasibility of ordinary optical lens, an experiment was operated by 532 nm laser irradiating on an ordinary optical zoom lens whose focus ranged from 12 mm to 72 mm. The absolute reflectivity of cat eye effect was tested, and variable rules of the reflectivity were obtained when the focus, F number and incident angle were adjusted. When the reflected light returned from the original way and disturbed the incident ray, the reflectivity could not be tested easily and it was solved by using the method of double-ray testing. The results reveal that the maximal absolute reflectivity can be as high as 35.87%, and the reflectivity is in direct proportion to focus, inverse proportion to F number and incident angle; the geometrical diverge