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Cold Mirrors

Dielectric heat-transmitting mirror coatings
SHD Series

Special Properties

  • High reflection for visible wavelengths
  • Excellent infrared transmission up to 2500 nm
  • Efficient heat/light separation
  • Temperature-resistant borosilicate glass substrate
  • Designed for an angle of incidence of 45°
  • Excellent optical characteristics
  • Multi-layer dielectric coating

Typical Applications

  • Cold mirrors in lighting systems
  • Sensor technology
  • Dichroic beamsplitter applications
  • High reflection mirrors
  • Medical lighting devices
  • Heat dissipation filter in optical systems
  • Cold light sources
  • Filters for fiber optical systems
  • Cost-effective 45° laser mirrors
  • Diode laser applications
  • Infrared filter (NIR-IR)
  • VIS-blocking optics

Related mirror types

Get a Quotation

48h-Express Optics Manufacturing 48 h Express-Service available

Our SHD cold mirrors provide excellent optical reflection for visible wavelengths while transmitting more than 90% infrared light up to 2500 nm on average. They are ideal for extracting the cold visible light from a beam path and removing most thermal energy while maintaining high imaging quality. We designed the dichroic coating of the SHD mirrors to reflect at an angle of 45° and transmit the infrared radiation at 0° related to the incident light beam.

SHD cold mirrors feature high optical quality. Hence, in addition to the primary use as a cold mirror, the SHD can also merge visible with infrared light or laser beams. They also work as efficient and cost-effective laser mirrors for visible light. The dielectric construction ensures permanent resistance to thermal load and moisture. Premium-grade borosilicate glass substrates enable the SHD cold mirrors to work at increased operating temperatures.

We also produce customized cold mirror optics. We can modify the layer system concerning reflection wavelength, angle of incidence, cut-on, cut-off wavelengths, damage threshold, and spectral operating range on a batch basis. If you need support with your customized cold mirror design, please use our inquiry form or send an email with your detailed requirements.

Please click on the following button or select a thickness from the table to receive a quotation for our standard SHD cold mirrors with individual dimensions.

Get a Quotation

48h-Express Optics Manufacturing 48 h Express-Service available

If you are interested in other mirror coatings or filters that block or transmit thermal energy or infrared light, please visit the websites of our SIR heat-reflecting hot mirrors and our KG-heat absorbing filters.

 

Specifications


Reflectivity of the SHD cold mirrors

SHD reflectivity curve
Enlarge curve to show details


Standard Thicknesses

(Please click on a thickness in the list to request a quote)

Thickness (mm)

Tolerance

 48h-Express Service
1,10 ±0,10 ✔
1,75 ±0,20 ✔
3,30 ±0,20 ✔
Custom thicknesses on request.
The thicknesses in the list marked with "✔" are also available within 48–h Express Service.

Optical Reflectivity

  • R > 99  % for single wavelengths
  • Ravg > 97% at 400 – 690 nm at 45° incidence
  • Tavg > 90% at 800 – 2500 nm
  • Other wavelength range, different angles, customized cut-off and cut-on points per inquiry

Coating Construction

Substrate

Flatness

  • Depending on substrate material and thickness

Surface Quality

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

Standard Thicknesses

Adherence and Abrasion Resistance

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

Note: If you search for optics with the inverse function principle of the SHD cold mirrors, please visit the datasheet of our SIR-heat reflecting filters (hot mirror optics) for detailed information.

All given details and specifications are mean reference values and are not guaranteed. Also, please consider the "Notes on specifications".

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