optical beam expander 中文意思是什麼
optical beam expander
解釋
光束擴張器,擴束器-
Beam expander and field lens : quadruple beam expansion, biplate structure design, totally enclosed optical system, no lens pollution and without replacement
擴束鏡及場鏡: 4倍擴束,雙片結構設計,全封閉的光學系統,鏡片無污染,不用更換。
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