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Infrared Filter

IR Filter for optical systems and instruments

Suitable for gas detection

Customized manufacturing

Germanium Silicon Saphire

Pleiger Laser Optics IR filters are made of silicon, germanium, spahir, IR fused silica, and ZnSe. The bandpass filters are usually used for gas anlytics (H2O, ethanol, methanol, formaldehyde, CO2, CO, NO,).

Neutral density filters (gray filters) are placed in front of the sensor to reduce the amount of light on the detector. Long-pass and short-pass filters are used to block out spectral ranges.

Filter materials

IR filters with a high-quality PVD coating with high transmission in the application area.

  • Germamium filter
  • Silicon filter
  • Saphire filter
Filter designs
  • bandpass filter
  • longpass filter
  • shortpass filter
  • 0,8 – 12 µm
Filter Applications

Measurement of environmental influences with IR filter from Pleiger Laseroptik with high peak transmission and high blocking of the VIS and LWIR range. Available on all materials which are transparent in IR.

Gas analysis
  • H2O (water)
  • CH4 (methane) 
  • CO2 (carbon dioxide)
  • CO (carbon monoxide)
  • N2O (nitrous oxide)
  • O3 (ozone)

IR filters for the SWIR, MWIR and LWIR are made of germainium, silicon, sapphire, IR fused silica, zinc sulfides, zinc selenide.

Application areas of out IR filters:

  • Environmental measurements
  • Temperature measurements
  • Therography, such as in thermal imaging cameras

Benefir from the advantages of dielectric coatings from Pleiger Laseroptik:

  •  High stability against environmental influences
  • Wide ranfe of applications
  • Experience and expertise for the SWIR to LWIR

Do you need mirrors for the SWIR, MWIR or LWIR?

Here you can find our overview of optical mirrors and our stock items.

Do you need further information about our filters?

Please feel free to contact us!