Heat Reflection Filters
Heat reflecting filter coatings with extended blocking range
SIR-IR Series
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 filters
- Sensor and measurement applications
- Automotive filter applications
- Medical lighting filter
- Projector and lighting systems
Related filters and coatings
- Heat Absorbing Filters (KG1, KG2, KG3, KG4, & KG5)
- SIR-Series (dielectric hot mirrors)
The SIR-IR heat-reflection filter optics design represents the best compromise between frequently requested filter characteristics and realizability. It features an extended blocking range up to 2500 nm. The transmission offered by the SIR-IR filters in the visible spectrum is not as high and neutral as that of our highly transparent SIR heat-reflecting hot mirror. However, this slightly lower transparency in the visible spectrum enables a much broader blocking capability for infrared light radiation. At sufficient order quantities, we can adapt the cut-on wavelengths of the filters to individual requirements.
Specifications
Transmission curve of the SIR-IR filter
Standard Thicknesses
(Please click on glass thickness to request a quote)Thickness (mm) |
Tolerance |
 |
|---|---|---|
| 2.00 | ±0.20 | - |
| Custom thicknesses are available on request | ||
Product Code
- SIR-IR heat-reflection filters
Substrates
- High-temperature borosilicate glass
- Other on request
Coating
- Other cut-ons or cut-offs are possible per coating run on request
Operating Temperature
- up to 250 °C
Flatness
- Depending on substrate material and thickness
- Other on request
Surface Quality
- typ. 80-50 scratch & dig (MIL-0-13830A)
- Other on request
Other Specifications
- Adherence according to MIL-C-675 C (tape test)
- Abrasion-resistant according to MIL-M-13508 C
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Last update: May 21, 2024