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Germanium plano-concave lenses have a very low absorption in the infra-red. Negative focusing Germanium lenses are perfect for thermal imaging and Carbon Dioxide laser focusing applications.
We supply uncoated but a range of anti-reflection coatings can be applied as well.
 Standard Specifications:
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Optical Material:
Diameter Tolerance:
Design Wavelength:
Design Index:
Paraxial Focal Length:
Centration:
Clear Aperture:
Surface Quality:
Wavefront Distortion:
Bevel:
Coating: |
High quality single-crystal Germanium
+0.0, -0.15mm
10.6um
4.0028 at 10.6um
±2%
3 arc minutes
>85%
60-40 scratch and dig
lambda/2 at 632.8nm
<0.25mm X 45°
available upon request |
Standard Germanium Plano-Concave Lenses:
Dia(mm) |
f(mm) |
R1(mm) |
te(mm) |
tc(mm) |
Product Number |
25.40 |
-38.10 |
114.40 |
3.7 |
3.0 |
UQT-PLCAG0501 |
25.40 |
-50.80 |
152.54 |
3.5 |
3.0 |
UQT-PLCAG0502 |
25.40 |
-63.50 |
190.68 |
3.4 |
3.0 |
UQT-PLCAG0503 |
25.40 |
-76.20 |
228.81 |
3.3 |
3.0 |
UQT-PLCAG0504 |
28.00 |
-38.10 |
114.40 |
3.8 |
3.0 |
UQT-PLCAG0505 |
28.00 |
-50.80 |
152.54 |
3.6 |
3.0 |
UQT-PLCAG0506 |
28.00 |
-63.50 |
190.68 |
3.5 |
3.0 |
UQT-PLCAG0507 |
28.00 |
-127.0 |
381.35 |
3.3 |
3.0 |
UQT-PLCAG0508 |
38.10 |
-50.80 |
152.54 |
7.2 |
6.0 |
UQT-PLCAG0509 |
38.10 |
-63.50 |
190.68 |
6.9 |
6.0 |
UQT-PLCAG0510 |
38.10 |
-76.20 |
228.81 |
6.8 |
6.0 |
UQT-PLCAG0511 |
38.10 |
-127.0 |
381.35 |
6.5 |
6.0 |
UQT-PLCAG0512 |
38.10 |
-190.5 |
572.03 |
6.3 |
6.0 |
UQT-PLCAG0513 |
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| Please Contact ultiQuest for other dimensions in prototype and production quantities. |
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| NOTES! |
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Germaium is susceptible to thermal runaway, being non-transmissive at 200°C. |
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Be sure to wear laser safety goggles when checking optical path and adjusting optical axis. |
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