Optical filters picture, Hot Mirrors
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Hot Mirrors
Dielectric Heat Reflecting Hot Mirrors

Special Properties

  • Very high infrared reflection up to 1100nm
  • High and neutral visible transmission
  • High operating temperature (up to 400°C)
  • 100% dielectric multilayer coating

Typical Applications

  • Color neutral and efficient heat/light separation (Lighting filter)
  • IR-Filters or CCD-Filters for camera chips
  • Sensor- and measurementapplications
  • Detector trimmers
  • Heat reflection filter
  • Infared laser diode mirror
  • Eye tracking applications
  • Hot Mirror in lighting systems
  • Projector light sources

Our SIR dielectric heat reflecting hot mirror has a decisive Hot Mirroradvantage over common hot mirrors or heat absorbing filters. The transmission of visible light of our SIR hot mirror is higher and more neutral, while the heat radiation up to 1.100nm is reflected more efficiently. Because of its all dielectric coating construction and the heat resistant borosilicate glass substrate, our SIR hot mirrors can be used at high operating temperatures. The standard SIR hot mirror withstands operating temperatures of up to 400°C. An all dielectric multilayer thin film coating design, makes our SIR heat reflection filters resistant against humidity and other environments. Our hot mirror coatings can be modified in regards to transmission and reflection ranges, as well as to the cut-on and cut-off wavelengths. Please use our custom coating inquiry form to conveniently request your customized heat reflecting hot mirror.

To request our SIR Hot Mirrors with your individual dimensions, please click the button below:

Request hot mirror

SIR-Dielectric Hot Mirror*

SIR Hot Mirror transmission curve

Show transmission of our SIR hot mirrors

Product Code

  • SIR Hot Mirror


  • Temperature resistant borosilicate glass
  • Other on request


  • 100% dielectric
  • Other cut-ons / cut-offs on request

Operating Temperature

  • up to 400°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

  • 1,1mm / 1,75mm / 3,3mm

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"