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Knight Optical
Roebuck Business Park
Harrietsham, Kent ME17 1AB
England

Full Company Details
Phone: 44 1622 859444
Fax: 44 1622 859555
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Knight Optical

Germanium
  • Type: Windows
  • Diameter / Dimension: 5mm - 300mm
  • Applications: Astronomy, Biomedical/Medical, Industrial, Military, Scientific Research, Other
  • Diameter: +0, -0.2mm
  • Thickness: ± 0.2mm
  • Flatness: < 2 waves over 90% aper
  • Surface Quality: <60-40 scratch/dig

Germanium (Ge) is a relatively hard, high-density, IR transmitting material that blocks UV and VIS wavelengths but allows IR from 2µm. Germanium has the highest refractive index of commonly available IR-transmitters and has low optical dispersion. This makes it desirable in aspects of lens design where its refractive index allows otherwise impossible specifications to be built.
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