BK7 Windows

Windows are widely used on optical systems, which are applied to isolate the optical system from the environment while still allowing light to pass. The material of windows must be considered for different material with different transmission ranges. Also other specifications must be considered with certain environments.

Sinoceramics supply a large amount of windows with different materials including BK7 glass, Fused Silica, Sapphire, CaF2 and other specific glass.

 

 

 

 

High Precision BK7 Windows Specifications:

 
Material: BK7 grade A glass
Diameter Tolerance: + 0.0 / -0.15mm
Thickness Tolerance: ± 0.2mm
Clear Aperture: 90% Diameter
Parallelism: < 30 arc seconds or better
Surface Quality: 20-10 scratch and digs
Flatness: λ /8 @ 633nm
Wavefront Distortion: λ /8 per 25mm

 

 

Standard BK7 Windows Specifications:

 
Material: BK7 grade A glass
Diameter Tolerance: + 0.0 / -0.15mm
Thickness Tolerance: ± 0.2mm
Clear Aperture: 90% Diameter
Parallelism: < 3 arc minutes
Surface Quality: 60-40 scratch and digs
Flatness: λ /2 @ 633nm
Wavefront Distortion: λ per 25mm

 

 

The Standard Size for High Precision Windows

Diameter

10.0mm
12.7mm
25.4mm
30.0mm
50.0mm
Thickness
6.0mm
6.0mm
6.0mm
6.0mm
6.0mm
Part Number
WIN1110
WIN1112
WIN1125
WIN1130
WIN1150

 

 

The Standard Size for Standard Windows

Diameter

10.0mm
12.7mm
25.4mm
30.0mm
50.0mm
Thickness
6.0mm
6.0mm
6.0mm
6.0mm
6.0mm
Part Number
WIN1210
WIN1212
WIN1225
WIN1230
WIN1250