Germanium Lenses By Wts Photonics Co., Ltd.

We are engaged in offering excellent quality Germanium Lenses to our valuable clients. Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8a 12 um wavelength band. Its high refractive index makes Ge ideal for low power imaging systems because of minimum surface curvature. Chromatic aberration is small, often eliminating the need for correction.
Germanium is most widely used for lenses and windows in IR systems operating in the 2 um - 12 um range. Its transmission is very temperature sensitive, becoming opaque near 100A C.

Specifications:
Material: Germanium
Diameter Tolerance:+0, -0.1mm
Thickness Tolerance:A 0.1mm
Focal Length Tolerance: A 1%
Surface Quality: 60-40 scratch and dig
Surface Figure: :lambda/2
Clear Aperture: >85% of diameter
Bevel: 0.25x45deg
Coating: Upon requirement