Search
Germanium Windows
Germanium Windows
shared：
Germanium is used widely for lenses and windows in thermal imaging, FLIR applications, as germanium viewports. Its high index of refraction (about 4) makes it of particular interest
Useful transmission range of Germanium windows is from 2 to 13µm. Germanium is opaque in the visible. Germanium has the property of thermal runaway, meaning that the transmission decreases as temperature increases. As such, Germanium window should be used at temperatures below 100°C.
Capability:
| Material | Ge |
| Diameter Tolerance | +0.0, -0.2m |
| Thickness Tolerance | ±0.1mm |
| Parallelism | <3 arc minut |
| Surface Quality | 60/40 scratch and dig |
| Surface Flatness | λ@ 632.8nm |
| Clear aperture | >90% |
Note: Custom sizes and coatings are available upon request.
