光学元件残余偏振测量方法与装置  

Testing method and equipment for residual polarization of optical lens

作　　者：王雷[1] 许荣国[1] 阴万宏[1] 姜昌录[1] 康登魁[1] 王生云[1] WANG Lei;XU Rongguo;YIN Wanhong;JIANG Changlu;KANG Dengkui;WANG Shengyun(Xi'an Institute of Applied Optics,Xi'an 710065,China)

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《应用光学》2021年第6期1080-1085,共6页Journal of Applied Optics

基　　金：国防预研基金。

摘　　要：光学镜头的残余偏振是影响偏振遥感探测、偏振军事目标识别和精密光学测量仪器测量准确度的一个关键参数。针对大口径可见光波段光学镜头偏振度准确测量的问题,研制了一台光学镜头残余偏振度测量装置。该装置利用表面镀金属膜的大口径离轴抛物面反射镜作为准直光源,通过控制入射光的入射角、降低入射光源的残余偏振度等技术,在水平、垂直、45°、135°的方向获得了一致性很高的斯托克斯参量。为了验证该装置的性能,对可见光波段口径小于160 mm的光学镜头残余偏振进行了实际测量,测量结果表明,该测量装置的残余偏振度低于0.2%,可满足高精度光学镜头残余偏振的测量需要。The residual polarization of optical lens is a key parameter that affects the accuracy of polarization remote sensing detection,polarization military target recognition and precision optical instruments measurement.In order to solve the problem of accurate measurement of polarization degree of large aperture optical lens in visible light band,a measuring device of residual polarization degree of optical lens was studied.The large aperture off-axis parabolic mirror with a surface metal film was used as the collimating light source,by controlling the incident angle of the incident light and reducing the residual polarization degree of the incident light,the consistent Stokes parameters were obtained in the horizontal,vertical,45°and 135°directions.In order to verify the performance of the device,the residual polarization of the optical lens whose aperture was less than 160 mm in the visible light band were measured by the device.The measuring results show that the residual polarization of the measuring device is less than 0.2%,which can meet the needs of high-precision measurement of residual polarization of the optical lens.

关 键 词：残余偏振度 光学镜头 测试方法 斯托克斯参数 

分 类 号：TN206[电子电信—物理电子学]