beam expander meaning in English
光束扩展器
射束放大器
射束扩展器
束扩展器
Examples
- Beam expander and field lens : quadruple beam expansion , biplate structure design , totally enclosed optical system , no lens pollution and without replacement
扩束镜及场镜: 4倍扩束,双片结构设计,全封闭的光学系统,镜片无污染,不用更换。