Optical
Components - Windows
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Windows:
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Windows are widely
used on optical system. There can be extreme differences of temperature, pressure,
humidity and other parameters on either side of the window. The optical, mechanical
and thermal properties of windows must be considered according to the intended use.
We offer a range of optical quality windows including BK7
windows, Fused Silica windows, CaF2 windows,Sapphire windows. |
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| Windows
Properties |
| Materials |
BK7
windows |
Fused Silica Windows |
CaF2 Windows |
Sapphire Windows |
| Refractive index (nd) |
1.5168 |
1.45847 |
1.433849 |
1.768234 |
| Abbe number (Vd) |
64.2 |
67.82 |
94.99 |
72.24 |
| Density (g/cm3) |
2.52 |
2.2 |
3.18 |
3.99 |
| Transmission Range (nm) |
0.33 -
2.1 |
0.18 -
2.5 |
0.17 -
7.8 |
0.18 -
4.5 |
| Thermal Expansion Coeff. |
7.5
(10-6/K) |
0.54
(10-6/K) |
18.85
(10-6/K) |
5.8
(10-6/K) |
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Windows
Specifications: |
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Materials
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BK7
windows |
Fused Silica Windows |
CaF2 Windows |
Sapphire Windows |
| Diameter Tolerance |
+
0.0,
-0.1 mm |
+
0.0,
-0.1 mm |
| Thickness Tolerance |
±
0.2
mm |
±
0.2
mm |
| Clear Aperture |
>80% |
>80% |
| Bevel |
<0.25 mm x 45° |
<0.25 mm x 45° |
| Parallelism |
< 3 arc minutes |
1 arc minute |
| Surface quality |
60/40 scratch and
dig (standard) |
80/50 scratch and dig |
| Wavefront distortion |
l
per 25 mm @633 mm (standard)
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l
per 25 mm @633 mm |
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For more information please contact
TOPLENT PHOTONICS on: info@toplent.com |
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Back
to Optical Components |
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