Description
Germanium lenses are optical lenses made of polished germanium. Germanium Optics are rugged and resistant to corrosion and are ideal for harsh environments and applications where there is constant exposure to the elements.
Germanium lenses are typically used in thermal imaging cameras. Germanium lenses are useful for wide-angle lenses. Germanium is also used for FTIR (Fourier Transformed Infrared) and FLIR (Forward Looking Infrared) and spectroscopy systems.
At Dongqiao Optics we manufacture a wide variety of germanium lenses with various anti-reflection coatings. Spherical plano-concave, plano-convex, concave-convex and aspheric lenses are all available in a wide variety of sizes. We are also able to accommodate special orders should you need a size, shape or AR coating. Our germanium lenses have a high refractive index—the highest refractive index.
Germanium Optics Factory Standards
- Substrate Material: Ge (Germanium)
Diameter: 5mm-350mm
Shape: Spherical Plano-Concave, P-Convex, Concave-Convex or Aspheric
Focal length: +/-1%
Surface Quality: 20-10 (after coating)
Surface figure: l/4 @ 633nm
Clear Aperture: >85% of central dimension
Antireflection Coating: @ 3-12 um
Contact us for manufacturing limits or custom specifications.