Alkor Technologies - manufacturer of Germanium meniscus lenses for Thermal Imaging Cameras and Pyrometry.
Germanium positive Meniscus Lenses used with the shorter radius facing the longer conjugate. These lenses act as focusing element with less aberrations than plano-convex lenses.
| Germanium positive meniscus, BBAR 8-14 or 2-13microns |
| Cat# |
Dia,in |
Dia,mm |
FOC,mm |
| Ge-pm-12.7-25 |
0.5 |
12.7 |
25.4 |
| Ge-pm-12.7-50 |
0.5 |
12.7 |
50.8 |
| Ge-pm-25.4-50 |
1.0 |
25.4 |
50.8 |
| Ge-pm-25.4-63 |
1.0 |
25.4 |
63.5 |
| Ge-pm-25.4-76 |
1.0 |
25.4 |
75.0 |
| Ge-pm-25.4-100 |
1.0 |
25.4 |
100 |
| Ge-pm-25.4-127 |
1.0 |
25.4 |
127 |
| Ge-pm-38.1-50 |
1.5 |
38.1 |
50.8 |
| Ge-pm-38.1-63 |
1.5 |
38.1 |
63.5 |
| Ge-pm-38.1-76 |
1.5 |
38.1 |
75.0 |
| Ge-pm-38.1-100 |
1.5 |
38.1 |
100 |
| Ge-pm-38.1-127 |
1.5 |
38.1 |
127 |
| Ge-pm-38.1-150 |
1.5 |
38.1 |
150 |
| Ge-pm-38.1-200 |
1.5 |
38.1 |
200 |
| Ge-pm-50.8-76 |
2.0 |
50.8 |
75 |
| Ge-pm-50.8-100 |
2.0 |
50.8 |
100 |
| Ge-pm-50.8-127 |
2.0 |
50.8 |
127 |
| Ge-pm-50.8-150 |
2.0 |
50.8 |
150 |
| Ge-pm-50.8-200 |
2.0 |
50.8 |
200 |
| Any other custom shape, size and focal length are available upon request. |
Custom Germanium meniscus lenses for Thermal Imaging Cameras are available in any size and configuration. Anti-reflection coatings can be applied for 2-14 microns (BBAR or single layer AR) and 8-14 microns (BBAR) depending on your custom application.
| Standard Specifications |
| Material |
Germanium optical monocrystal |
| Dimensions |
± 0.00/-0.10mm |
| Thickness |
± 0.2mm |
| Focal length tolerance: |
+/-1% at 10.6microns |
| Surfaces |
60/40 |
| Edges |
Fine Ground |
| Surface irregularity |
≤3 Fringes |
| Centration |
3 Arc mins |
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 optics; ZnSe optics |