Based on the double refraction principle of outgoing beam in the biprism,the displacement method for measuring the small angle of biprism is presented.The error of this method is also discussed.
利用双棱镜引起射光束方向双向偏折
,提
了
移法测量玻璃双棱镜微小底角
新方法,介绍了测量
基本
,讨论了测量误差.