Products -> Window-> Brief
 
Window
 
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.
 
Union Optic offers all types of windows made of different materials. Special size and materials are also available upon request. In addition, we provide various coating on optical windows.
 
Windows we can supply are listed below:
 
Material
Refractive Index
Transmission
Range(um)
Thermal Expansion
Coefficient(10-6/K)
Density(g/cm3)
BK7
1.5164@588nm
330-2100nm
7.5
2.52
Fused Silica

1.4858@308nm
185-2500nm
0.58
2.20
Sapphire
1.755@1000nm
180-4500nm
8.4
3.98
Calcium
Fluoride

1.399@ 5000nm
170-7800nm
18.85
3.18
Magnesium
Fluoride
no=1.3836(405nm)
ne=1.3957(405nm)
120-7000nm
13.7||a; 8.48||c
3.17
Silicon
3.426@5000nm
1200-7000nm
2.55
2.33
Germanium
4.003@10000nm
2000-14000nm
5.5
5.33
ZnSe
2.4028(10600nm)
550-20000nm
7.6
5.27
 
 
Ordering Information
 
WIN-BK7-25.4-6.35-AR1064: WIN-Material-Dimension-Thickness-AR coating
 
Note: All the windows we provided are RoHS compliant! Other special windows like elliptical and brewster window can also be provided upon request.