Custom Germanium (Ge) Convex Lens with AR coating for Thermal Camera Sensor
Description
Germanium is widely used because of its high refractive index, large transmission distance range and robust mechanical properties. Optical grade germanium crystal has a wide infrared transmission band (available in both 3~5μm and 8~12μm bands) and is a good material for making infrared optical lenses, mostly used in thermal imaging cameras and infrared lasers. However, germanium is subject to thermal fugacity, i.e., the transmittance decreases as the temperature increases.
Custom Germanium (Ge) Convex Lens with AR coating for Thermal Camera Sensor
Specifications |
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|---|---|
| Material: | Ge |
| Diameter: | 2-300 mm |
| Focal Length: | 15-5000 mm |
| Edge Thickness, Te: | 0.12-60 mm |
| Lens Type: | Plano-Convex, Plano-Concave, Bi-Convex, Bi-Concave |
| Surface Quality: | 60-40, 40-20, or better |
| Surface Accuracy: | λ/2, λ/4 or better |
| Coating: | AR+DLC or Customer Request |
Features
Germanium is widely used because of its high refractive index, large transmission distance range and robust mechanical properties.
Applications
Germanium lens mostly used in thermal imaging cameras and infrared lasers.
For pricing, technical or any other questions please contact the supplier
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How to order?
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Ships from:
China
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Sold by:
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On FindLight:
since 2024
Frequently Asked Questions
The preferred wavelength band for the Germanium lens and window is 8-12 um.
Germanium is ideal for low power imaging systems because of its high refractive index and minimum surface curvature.
Yes, Germanium is most widely used for lens and windows in IR systems operating in the 2 um - 12 um range.