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Sapphire Windows

Crystal sapphire possesses a unique combination of excellent optical, physical and chemical properties it is the hardest of the oxide crystals. sapphire retains its strength at high temperatures, has good thermal properties, excellent transparency and chemically resistant to common acids. These properties encourage its wide use in hostile environments where optical transmission in the range from the visible to the near infrared is required.
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Specifications: 
Materials:Sapphire
Diameter Tolerance +0.0,/-0.15 mm
Thickness Tolerance +/-0.1mm 
Parallelism <3 arc minute
Surface Quality :20-10
Surface Figure:λ/10@633nm 
Bevel:0.25mm×45 ° 
Clear Aperture:90% 
Coating:Specified by customers 
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