基片材料：CaF2
工作波长：2.0 μm -5.0 μm（增镀膜）
用途：成像、扩束或缩束，会聚
工作波长：1.65 μm -3 μm（增镀膜）
光学材质：CaF2
工作波长：200 nm-8 μm（未镀膜）
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