Germanium(Ge) Windows are made from Germanium material, which has transparent range from 2 to 17 micron. MT-Optics,Inc. can kindly process this Ge as windows, mirrors, lenses etc.

Specifications:
Material: --------------------------------------------------------- Germanium
Diameter Tolerance: ------------------------------------------ +0.0, -0.1mm
Thickness Tolerance: ---------------------------------------- ±0.2mm
Clear Aperture: ------------------------------------------------->80%
Parallelism:------------------------------------------------------- 1 arc minute
Flatness:----------------------------------------------------------- λ/2 @ 632.8 nm
Surface quality: ------------------------------------------------- 60/40 scratch and dig
Protective Bevel:--------------------------------------------------<0.25x45deg
Coating:-------------------------------------------------------------Uncoated