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Germanium lenses features:
- Wavelength Range 2-14µm
- High Index of Refraction
- Minimal Chromatic Abberation Due to Low Dispersion
- Rugged, Durable Material
- AR coating for 2-12µm or 8-12µm and DLC coating for 8-12µm
Contact our Sales Team and we will try to offer best price on Germanium lenses. If you do not see a suitable size or focal length, write a request, we will make a lens according to your specifications at no additional cost. Hemispherical Germanium lenses available.
| Germanium plano-convex lens with high transmission AR 8-14µm or 2-13µm or DLC/AR coating |
| Cat# |
Dia,in |
Dia,mm |
FOC,mm |
CT,mm |
R,mm |
ET,mm |
| Ge-px-7.35-7 |
0.29 |
7.35 |
7 |
1.5 |
21 |
|
| Ge-px-11.5-5.3 |
0.45 |
11.5 |
5.3 |
1.71 |
16 |
0.65 |
| Ge-px-12.7-6.35 |
0.5 |
12.7 |
6.35 |
2.6 |
19.06 |
2.0 |
| Ge-px-12.7-10 |
0.5 |
12.7 |
10 |
2.5 |
30 |
2.0 |
| Ge-px-12.7-12.7 |
0.5 |
12.7 |
12.7 |
2.5 |
38.1 |
2.0 |
| Ge-px-12.7-25 |
0.5 |
12.7 |
25.4 |
2.3 |
76.05 |
2.0 |
| Ge-px-12.7-30 |
0.5 |
12.7 |
30 |
2.1 |
90 |
2.0 |
| Ge-px-12.7-40 |
0.5 |
12.7 |
40 |
2.1 |
120 |
2.0 |
| Ge-px-12.7-50 |
0.5 |
12.7 |
50.8 |
2.1 |
151.01 |
2.0 |
| Ge-px-13.8-15 |
0.54 |
13.8 |
15 |
1.5 |
45 |
0.97 |
| Ge-px-25.4-12.7 |
1.0 |
25.4 |
12.7 |
2.5 |
38.1 |
1.3 |
Ge-px-25.4-25.4 |
1.0 |
25.4 |
25.4 |
3 |
76.27 |
2.0 |
Ge-px-25.4-50 |
1.0 |
25.4 |
50.8 |
2.5 |
151.01 |
2.0 |
| Ge-px-25.4-63 |
1.0 |
25.4 |
63.5 |
2.4 |
188.80 |
2.0 |
| Ge-px-25.4-76 |
1.0 |
25.4 |
75.0 |
2.4 |
229.10 |
2.0 |
| Ge-px-25.4-100 |
1.0 |
25.4 |
100 |
2.3 |
299.90 |
2.0 |
| Ge-px-25.4-127 |
1.0 |
25.4 |
127 |
2.2 |
376.7 |
2.0 |
| Ge-px-25.4-150 |
1.0 |
25.4 |
150 |
2.2 |
452.9 |
2.0 |
| Ge-px-25.4-200 |
1.0 |
25.4 |
200 |
2.2 |
597.16 |
2.0 |
| Ge-px-25.4-254 |
1.0 |
25.4 |
254 |
2.1 |
748.20 |
2.0 |
| Ge-px-25.4-500 |
1.0 |
25.4 |
500 |
2.0 |
1500 |
2.0 |
| Ge-px-28-21.7 |
1.1 |
28 |
21.7 |
2 |
65 |
- |
| Ge-px-38.1-25.4 |
1.5 |
38.1 |
25.4 |
4.4 |
76.2 |
2.0 |
| Ge-px-38.1-38.1 |
1.5 |
38.1 |
38.1 |
3.6 |
114.4 |
2.0 |
| Ge-px-38.1-50 |
1.5 |
38.1 |
50.8 |
3.2 |
151.01 |
2.0 |
| Ge-px-38.1-63 |
1.5 |
38.1 |
63.5 |
3.0 |
188.80 |
2.0 |
| Ge-px-38.1-76 |
1.5 |
38.1 |
75.0 |
2.8 |
229.1 |
2.0 |
| Ge-px-38.1-100 |
1.5 |
38.1 |
100 |
2.6 |
299.9 |
2.0 |
| Ge-px-38.1-127 |
1.5 |
38.1 |
127 |
2.5 |
376.7 |
2.0 |
| Ge-px-38.1-150 |
1.5 |
38.1 |
150 |
2.4 |
452.90 |
2.0 |
| Ge-px-38.1-200 |
1.5 |
38.1 |
200 |
2.3 |
597.16 |
2.0 |
| Ge-px-38.1-254 |
1.5 |
38.1 |
254 |
2.2 |
748.2 |
2.0 |
| Ge-px-38.1-500 |
1.5 |
38.1 |
500 |
2.1 |
1500.0 |
2.0 |
| Ge-px-50.8-38.1 |
2.0 |
50.8 |
38.1 |
4.8 |
114.4 |
2.0 |
| Ge-px-50.8-50.8 |
2.0 |
50.8 |
50.8 |
4.2 |
152.55 |
2.0 |
| Ge-px-50.8-76 |
2.0 |
50.8 |
75 |
4 |
229.1 |
2.6 |
| Ge-px-50.8-100 |
2.0 |
50.8 |
100 |
3.6 |
299.90 |
2.5 |
| Ge-px-50.8-127-AR/AR 8-14µm |
2.0 |
50.8 |
127 |
3.3 |
376.7 |
2.5 |
| Ge-px-50.8-150 |
2.0 |
50.8 |
150 |
3.2 |
452.9 |
2.5 |
| Ge-px-50.8-200 |
2.0 |
50.8 |
200 |
3.0 |
597.16 |
2.5 |
| Ge-px-50.8-254 |
2.0 |
50.8 |
254 |
2.9 |
748.2 |
2.5 |
| Ge-px-50.8-300 |
2.0 |
50.8 |
300 |
2.9 |
900 |
2.5 |
| Ge-px-50.8-500 |
2.0 |
50.8 |
500 |
2.7 |
1500 |
2.5 |
| Ge-px-76.2-50.8 |
3.0 |
76.2 |
50.8 |
7.9 |
152.55 |
3.0 |
| Ge-px-76.2-76.2 |
3.0 |
76.2 |
76.2 |
6.2 |
229.1 |
3.0 |
| Ge-px-76.2-150 |
3.0 |
76.2 |
150 |
4.7 |
452.9 |
3.1 |
| Ge-px-76.2-200 |
3.0 |
76.2 |
200 |
4.3 |
597.16 |
3.1 |
| Ge-px-76.2-254 |
3.0 |
76.2 |
254 |
4.0 |
748.2 |
3.0 |
| Ge-px-76.2-500 |
3.0 |
76.2 |
500 |
3.5 |
1500.0 |
3.0 |
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Any other custom shape, size and focal length are available upon request.
Ge lenses with yellow mark are available on stock and can be shipped within 1-2 weeks. Ask now.
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Custom Germanium Lenses for Thermal Imaging Cameras, Infrared spectroscopy and Remote Sensing are available in any size and configuration at very competitive price. Anti-reflection coatings can be applied on Germanium lenses for 2-14µm and 8-14µm depending on your custom application. Germanium (Ge) plano-convex Lenses are ideal for use in Mid-Wave Infrared (MWIR) and Long-Wave Infrared (LWIR) applications. Additionally, Germanium’s Knoop Hardness of 780 is well suited for rugged environments. Due to thermal runaway, or the decrease in transmission as temperature increases, Germanium (GE) Lenses should be used at temperatures below 100°C.
| Standard Specifications |
High Precision |
| Material |
Germanium optical monocrystal |
| Dimensions |
± 0.00/-0.10mm |
+0.00/-0.03 |
| Thickness |
± 0.10mm |
±0.05 |
| Focal length tolerance: |
+/-2% at 10.6microns |
+/-0.5% at 10.6microns |
| Surfaces |
60/40 |
40/20 |
| Edges |
Fine Ground |
| Surface irregularity |
≤5 Fringes |
0.2-0.5 Fringes |
| Centration |
3 Arc mins |
1 arc min |
Please do not hesitate to contact us for pricing for any custom size and coatings requirements. Special prices on large diameter Ge optics!
See Also: Silicon lenses ; ZnSe lenses
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