光学元件标识升级公告
光学材质：N-BK7
工作波长：350 nm-2.0 nm（未镀膜）
用途：成像、扩束或缩束，会聚
工作波长：400 nm-700 nm（增透膜）
工作波长：700 nm-1100 nm（增透膜）
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