Optical filters picture
Home / Products / Thin Film Coatings / SIR-IR Heat reflection filters


Heat reflection filters with extended blocking range

Special Properties

  • Broadband blocking of infrared light
  • Good visible transmission
  • Operating temperature up to 250 °C
  • Dielectric multi-layer coating

Typical Applications

  • Broadband heat protecting filter
  • Sensor- and measurement applications
  • Automotive applications
  • Medical lighting applications
  • Projector and lighting systems

Our SIR-IR heat-reflection filters feature an extended blocking range up to 2.500 nm. The transmission of the filters in the visible range is not quite as high and neutral as for our high transmission SIR heat-reflecting hot mirror, but this slightly lower visible transmission, makes a significant wider blocking capability of infrared light radiation possible. The SIR-IR heat-reflection filter design represents the best possible compromise between frequently requested characteristics and realizability.


To request an offer our SIR-IR heat reflection filters with individual dimensions, please click the button below:


Request for Quotation



Transmission curve of the SIR-IR filter

Product Code

  • SIR-IR heat-reflection filters


  • High temperature borosilicate glass
  • Other on request


Operating Temperature

  • up to 250 °C


  • Depending on substrate material and thickness
  • Other on request

Surface Quality

  • typ. 80-50 scratch & dig (MIL-0-13830A)
  • Other on request

Standard thicknesses

  • 2,00 mm

Other Specifications

  • Adherence according to MIL-C-675 C (tape test)
  • Abrasion resistant according to MIL-M-13508 C


All given details and specifications are mean reference values and are not guaranteed. In addition, please consider our "Notes on technical specifications"