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Rectangular Windows
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Specifications：
Material
BK7 or UV fused silica
Diameter Tolerance
+0/-0.15mm
Thickness Tolerance
±0.25mm
Clear Aperture
＞Central 85% of diameter
Parallelism
＜5″
Surface Quality
20/10
Transmitted Wavefront
λ/10 @632.8nm
Chamfers
12.7 & 25.4mm:0.25-0.75mm face width x 45°±15°
50.8mm:0.38-1.14 mm face width x 45°±15°
• Most sizes λ /20 transmitted wavefront, 10-5 surface quality are available；
• All kinds of coatings are available；
• Custom designs for other sizes and coatings are also available upon request.
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Square Windows：
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