Infrared filter (New Design)

Filters for the 1-14 µm range

Infrared filter (New Design)

Infrared filter (New Design)

Filters for the infrared spectrum

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

Neutral density filters (grey filters) are placed in front of the sensors to reduce the amount of light on the detector. Long 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. We offer filters made from these materials:

  • Germanium
  • Glasses (Infrasil / N-BK7)
  • Silicon
  • Sapphire
  • Zinc selenide

Filter designs

Filter designs:

  • Bandpass filters (gas detection)
  • Long-pass filters
  • Short-pass filters
  • Wavelength range: 0.8 - 12 µm
Infrared filter (New Design)

Areas of application for our IR filters

  • Environmental measurements
  • Temperature measurements
  • Thermography, such as in thermal imaging cameras
  • Safety systems to monitor production processes
  • Determining emission values
  • Monitoring of incineration plants and refineries
  • Quality control, for example in the production of chemicals
Infrared filter (New Design)

Advantages of dielectric coatings

Pleiger Laseroptik offers a unique coating service to customise infrared filters for your applications. This is necessary to protect the components against environmental influences and to optimise performance.

Using the innovative PVD process, we achieve extremely thin layers with an ideal surface structure. You can choose between metallic and dielectric coatings or combined variants.

We use coating technology to improve the filter behaviour at certain wavelengths. Or we can control the transmission of infrared light at steep angles of incidence if this is required due to a measurement setup.

Infrared filter (New Design)

Germanium filters

We guarantee IR filters with long life cycles. These contribute to economical production processes and low-maintenance procedures. We would be happy to advise you in detail on the advantages of certain materials.

As a user, you benefit from the robust coatings in practice. The handling of the optics is simplified enormously. This is precisely why industrial companies rely on Pleiger's services.

  • High stability against environmental influences
  • Wide range of applications
  • Experience and expertise for the SWIR to LWIR
Do you need more information about our filters?

Please feel free to contact us!

Learn More

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