Windows
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  N-BK7 WindowsAttributeSpecificationTypical Diameter (Φmm)10.0, 12.7, 15.0, 20.0, 25.4, 30.0, 38.1, 50.8Typical Thickness (mm)2.0, 3.0, 6.0, 6.35Diameter Tolerance (mm)+0.0/-0.2 (General), +0.0/-0.02 (High Precisi.. 
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  Silicon WindowsFused Silica Windows is based on UV-grade synthetic fused silica. UV Fused Silica window provides better performance from UV to IR spectrum than BK7 windows. Also, it is the best choice in terms of th.. 
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  Borofloat WindowsAttributeSpecificationTypical Diameter (Φmm)8.0, 10.0, 12.7, 15.0, 20.0, 25.4, 30.0Typical Thickness (mm)1.0 ~ 50.0Diameter Tolerance (mm)+0.0/-0.2 (General), +0.0/-0.02 (High Precision)Thickness To.. 
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  Sapphire WindowsSapphire window is made from synthetic sapphire and can be made much thinner than BK7 windows. It is highly durable with a wide transmission range. Sapphire window is best suited for scratch resistanc.. 
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  Fused Silica WindowsFused Silica Windows is based on UV-grade synthetic fused silica. UV Fused Silica window provides better performance from UV to IR spectrum than BK7 windows. Also, it is the best choice in terms of th.. 
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  CaF2 WindowsCalcium Fluoride has excellent transmission in the UV, they are often used to make windows with high transmittance from below 150 nm and extending throughout the visible range. CaF2 Windows are relati.. 
