10 Nov 2011 Germanium is used widely for lenses and windows in thermal imaging and FLIR applications. Useful transmission range of Germanium windows is from 2 to 13mkm. Germanium Windows are opaque in the visible and it's should be usedat temperatures below 100°C.
Creator Optics can made various Germanium Windows according to special requirements and drawing. All of these Germanium Windows are available with high-precision polished surface, surface accuracy and parallelism.
Specifications of Germanium Windows:
Material: IR-grade Germanium Monocrystal
Diameter: Dia1mm to 150mm, customize available
Thickness: 0.2mm to 50mm , customize available
Diameter Tolerance: ±0.1mm
Thickness Tolerance: ±0.1mm
Edge of Germanium Windows: fine ground, no-chips
Chamfer/Beve: 0.25*45°
Flatness / Surface Accuracy: up to λ/8 per inch @633nm
Parallelism: up to 30 arc sec
Surface Qulitity: 40/20
Clear Aperture: ≥90%
Coating for Germanium Windows: AR/AR coating at 3-5 and 8-12 microns, customize available |
