Germanium Optical Windows for Gas Detection

Germanium is used within Gas Detection as this very special Infrared Material
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Exhaled Breath = 78.04% Nitrogen + 13.6%-16% Oxygen = CO2 Car Exhaust = Carbon Dioxide + Carbon Monoxide + Sulphur Dioxide + Nitrogen Oxides + Hydrocarbons How do we know this? Gas detection in Continuous Emission Systems (CEMS), combustion analysers and environmental monitoring are key to ensuring that the world we live in is monitored for its pollution and environments we work in are safe to do so as gases can be detrimental to life. Knight Optical provide a number of optical components that are used in Gas Detection Systems. We can also provide interference bandpass filters that work within the IR, front surface mirrors, gas cells and singlet lenses and window made from Germanium (Ge), Calcium Fluoride (CaF2), Silicon (Si), Quartz/ Fused Silica, Magnesium Fluoride (MgF2) and Sapphire (Al2O3). Read PDF for more information ….

  • Gas extraction - systems and equipment
  • monitoring for pollution & environment
  • detecting intensity of the gas
  • Gas Detection Systems

Product characteristics

Diameter Range:
less than 5mm to 300mm
Diameter Tolerance:
better than ± 0.1mm
Thickness Tolerance:
+/- 0.2mm
Clear aperture:
Centration tolerance:
better than 1 arc minute
Form error:
better than 0.5 wave (633nm) over aperture
Surface radius tolerance:
less than 1 fringe over aperture
Surface quality:
< 40-20 scratch/dig
AR/DLC (Diamond like coating @ 1-14μm)



Domain icon Manufacturer/ Producer

ME17 1AB Harrietsham - United Kingdom