| Window |
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| 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. |
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| 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. |
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| Windows we can supply are listed below: |
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|
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 | |
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