双频激光干涉测角中角锥镜的不对称性对测角精度影响的分析  

Effect of optical corner cubes' asymmetry on angle measurement

作　　者：何川[1] 林家明[1] 邹桂兰[1] 任建荣[1] 沙定国[1] 

机构地区：[1]北京理工大学光电工程系,北京100081

出　　处：《光学技术》2007年第S1期289-290,292,共3页Optical Technique

摘　　要：对双频激光干涉测角中反射镜组内两角锥镜的不对称性进行了分析,包括两反射角锥镜的制造工艺误差——两反射角锥镜的厚度偏差,以及安装偏差——两反射角锥镜前表面不平行度。推导出了由于该类误差带来的测角影响,建立了精确的角度测量模型。One approach of angle measurement used dual-frequency laser interferometer is referred.The asymmetry of the optical corner cubes in reflector housing is analyzed which has a notable effect on the uncertainty of the measurement result.The asymmetry is constituted by two components: Δh,the height difference between optical corner cubes,and Δα,the non-parallelism between two front surface of optical corner cubes.The influence of this errors is obtained,and a precision compensation model for angle measurement is established.

关 键 词：双频激光干涉 正弦测角 光学角锥镜 不对称性 

分 类 号：TH744.3[机械工程—光学工程]