Sapphire Windows

Specifications:

Material: Optical Grade Sapphire Crystal
Transmission Range: 0.185-4.5µm
Dimension Tolerance: +0.0 / -0.15mm
Thickness Tolerance: ± 0.2mm
Clear Aperture: 90% Diameter
Parallelism: < 3 arc minutes
Surface Quality: 80-50 scratch and digs
Flatness: λ per 25mm @ 633nm