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Hot Mirror 100x100x3.3mmthk

Ships within 1-2 days
SKU: 730FHQ100100
More Information
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Length (mm) 100
Width (mm) 100
Material Borosilicate
Thickness (mm) 3.3
Type Hot Mirror
Description Reflects IR/Transmits Visible

At 0° incidence hot mirrors transmit the visible and reflect the near infra-red (heat) spectrum typically found in tungsten light sources. Hot mirrors therefore remove much of the energy that can cause heating in a lighting system. Hot mirrors can be used as an alternative to KG1 filters where the light is focussed near to the filter giving a risk of cracking. Hot mirrors reflect the heat rather than absorb the heat as in KG1 heat filters. Hot mirrors also have a sharper cut off between IR and Visible because they have a dielectric coating that can be controlled.

Transmittance (0°)*:
Reflectance (0°)*:
Material Data :
Surface Quality:
Coating Specification:

> 92% avg.@ 425-710nm
> 95% avg.@ 780-1150nm
Borosilicate (LEGB float) or equivalent
+0.0 / -0.2 mm
± 0.2 mm
± 0.25 mm
<60-40 scratch/dig
< average 5λ over 25mm (sheeted material)
< average 10 arcmin (not guaranteed)
Hot Mirror Coating
Transmittance (0° AOI) >92% average over 425-710nm
Reflectance (0° AOI) >95% average over 780-1150nm

Mounting of diameters and squares.
Cutting down or edged to special shapes and sizes at short notice.
Larger sheets available up to 600mm dia for larger custom sizes.