optical lens--fused silicon window,it is used for optical imagin.
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optical fused silicon widow
Optical Windows R414
Key Specifications/Special Features:
Material: Bk7
Dimension: 4mm to 300mm ±0.1
Squares/Rectangles:1mm-200mm
Wedge Angles: 1~3 Arc minutes
Surface quantity: 10/5
Without demand on flatness