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Germanium(Ge) Windows / Lenses

Material:
Germanium

Thickness:
+/-0.2mm

Surface Flatness:
N<1λ

Coating:
Uncoated,
AR/AR@8-12um, Ravg<2.0%

Diameter Tolerance:
+0.0,-0.1mm

Surface Quality:
80/50~40/20

Parallelism:
<2 arc Min

Silicon and Germanium lens: for infrared measurement devices for non-contact temperature measurement, including stationary IR thermometers, and infrared cameras for point of Care Testing (POCT) devices.
Germanium windows are ideal for IR applications at a broad range of wavelengths, including use in lowerpower CO2 lasers. Germanium also has low dispersion, ideal for imaging applications.
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wdt_ID Attributes Value
  • Dimension and shape can be customized, such as: Circular, Square, Triangle or others.
Within the range of 2-12um, Germanium is the most commonly used material for fabricating high infrared imaging system.
  • Thermal imager
  • Infrared temperature instrument
  • Long pass filter (for wavelengths greater than 2 µm)
  • Night sight
  • Armament
  • Space satellite
  • High transmittance at 2-12um
  • High refractive index (4.0 at 2-14um)
  • Germanium is inert to air, water, alkalis, and many acids

Related Resource for reference

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