Windows are optical glass with polished faces that are relatively parallel. They are used to protect laser output. Always windows are AR coated to eliminate reflection, so AR coated windows offer improved transmission when used in industrial displays or computer monitors. Their high transmission makes them ideal for most industrial and laser protecting applications.

Material: BK7 Grade A optical glass, UV grade fused silica, CaF2 or other optical glass
Dimension Tolerance: +0.0/-0.2mm
Thickness Tolerance: ±0.2mm
Clear Aperture: >90%
Parallelism: Standard: 1 arc minute; High Precision: 10 arc seconds
Surface Quality: Standard: 60/40; High Precision: 20/10
Wavefront Distortion: Standard: λ@633nm per 25mm; High Precision: λ/10@633nm per 25mm
Clear Aperture: >90%
Chamfer: Protected <0.5mmx45deg
Coating: Both uncoated and coated are available