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A borosilicate crown glass, BK7 is relatively hard, does not scratch easily, and can be handled without special precautions.
Good performance over visible and near IR spectrum for most application.
The ideal window allows the optical beam to pass unimpeded and unchanged with high durability according to requirement of applications. In order to come close to this ideal, our windows and optical parallels are manufactured considering with transmittance, homogeneity, sub-surface damage, surface flatness and parallelism of the materials or in polishing processes to achieve high transmittance, low wavefront distortion and low scatter.
Non-coated and AR coated products are available.
 Standard Specifications:
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Optical Material:
Diameter Tolerance:
Thickness Tolerance:
Clear Aperture:
Parallelism:
Surface Quality:
Wavefront Distortion:
Bevel:
Coating: |
BK7 Grade A Optical Glass
+0.0, -0.1mm
± 0.2mm
>85%
see the table
20-10 scratch and dig
see the table
<0.25mm X 45°
available upon request |
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Standard Glass BK7 Windows
Dia(mm) |
T(mm) |
Wavefront Distortion |
Product Number |
Parallelism 5 arc sec |
10.0 |
6.0 |
Lambda/10 |
UQT-WDBH0001 |
12.7 |
6.0 |
Lambda/10 |
UQT-WDBH0002 |
25.0 |
6.0 |
Lambda/10 |
UQT-WDBH0003 |
25.4 |
6.5 |
Lambda/10 |
UQT-WDBH0004 |
30.0 |
6.0 |
Lambda/10 |
UQT-WDBH0005 |
50.0 |
10.0 |
Lambda/4 |
UQT-WDBH0006 |
75.0 |
15.0 |
Lambda/4 |
UQT-WDBH0007 |
Parallelism 1 arc min |
10.0 |
3.0 |
Lambda |
UQT-WDBL0101 |
12.7 |
3.0 |
Lambda |
UQT-WDBL0102 |
15.0 |
1.0 |
Lambda |
UQT-WDBL0103 |
15.0 |
3.0 |
Lambda |
UQT-WDBL0104 |
25.0 |
3.0 |
Lambda |
UQT-WDBL0105 |
25.4 |
3.5 |
Lambda |
UQT-WDBL0106 |
30.0 |
3.0 |
Lambda |
UQT-WDBL0107 |
50.0 |
6.0 |
2Lambda |
UQT-WDBL0108 |
50.8 |
6.0 |
2Lambda |
UQT-WDBL0109 |
75.0 |
15.0 |
2Lambda |
UQT-WDBL0110 |
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| Please Contact ultiQuest for other dimensions in prototype and production quantities. |
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| NOTES! |
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Windows with an antireflection coating are custom-specification products, except for those intended for use with visible light. And can also be built to custom specifications. |
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Be sure to wear laser safety goggles when checking optical path and adjusting optical axis. |
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