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Cold Mirrors

Cold Mirrors

The Cold Mirror is designed to separate heat from light. The visible spectrum is reflected (> 96%), while the infrared wavelengths are transmitted (> 80%). The cold mirror allows the use of a high intensity radiation source with heat sensitive materials such as film. The cold mirror is optimized for 45 degrees. The coating can be applied to most optical substrates from the UV to the near IR.

Custom sizes are available upon request.

Click here for a custom quote.

Description Product No. Graph Price Qty / Buy / Quote
Cold Mirror: 12mm Dia, BK-7 or Borosilicate R00745-00 Quote
Substrate MaterialBK-7 or Borosilicate
Dimensions12mm Diameter ±0.2mm
Thickness2.0mm ± 0.2mm
Bevel45°
Edge FinishGround
Surface Quality (SQ)80-50 Scratch & Dig
Clear Aperture (CA)90%
Angle Of Incidence (AOI)45°
Surface Flatness< 2 Waves per 25mm
Transmitted Wavefront Error (TWE)n/a
Parallelism< 3 Arc Minutes
CoatingAll Dielectric
Wavelength400-1100nm
Blocking400-650nm
Laser Damagen/a
Operating Temperature-196° C to 300° C
Cut On700nm
Cut Off400nm
Slopen/a
Transmission> 80%
Cold Mirror: 25mm Dia, BK-7 or Borosilicate R00740-00 Graph Quote
Substrate MaterialBK-7 or Borosilicate
Dimensions25mm Diameter ±0.2mm
Thickness2.0mm ± 0.2mm
Bevel45°
Edge FinishGround
Surface Quality (SQ)80-50 Scratch & Dig
Clear Aperture (CA)90%
Angle Of Incidence (AOI)45°
Surface Flatness< 2 Waves per 25mm
Transmitted Wavefront Error (TWE)n/a
Parallelism< 3 Arc Minutes
CoatingAll Dielectric
Wavelength400-1100nm
Blocking400-650nm
Laser Damagen/a
Operating Temperature-196° C to 300° C
Cut On700nm
Cut Off400nm
Slopen/a
Transmission> 80%
Cold Mirror: 50mm Sq, BK-7 or Borosilicate R00720-00 Quote
Substrate MaterialBK-7 or Borosilicate
Dimensions50mm Square ±0.2mm
Thickness2.0mm ± 0.2mm
Bevel45°
Edge FinishGround
Surface Quality (SQ)80-50 Scratch & Dig
Clear Aperture (CA)90%
Angle Of Incidence (AOI)45°
Surface Flatness< 2 Waves per 25mm
Transmitted Wavefront Error (TWE)n/a
Parallelism< 3 Arc Minutes
CoatingAll Dielectric
Wavelength400-1100nm
Blocking400-650nm
Laser Damagen/a
Operating Temperature-196° C to 300° C
Cut On700nm
Cut Off400nm
Slopen/a
Transmission> 80%