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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 :
Diameter:
Length/Width:
Thickness:
Surface Quality:
Flatness:
Parallelism:
Coating Specification:

> 92% [email protected] 425-710nm
> 95% [email protected] 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.

11 Items

Name Type Description Diameter (mm) Length (mm) Width (mm) Thickness (mm) Material Price Buy
730FHQ2500 pdf Hot Mirror Reflects IR/Transmits Visible 25 3.3 Borosilicate
£29.95
730FHQ4000 pdf Hot Mirror Reflects IR/Transmits Visible 40 3.3 Borosilicate
£35.25
730FHQ5000 pdf Hot Mirror Reflects IR/Transmits Visible 50 3.3 Borosilicate
£39.95
730FHQ2525 pdf Hot Mirror Reflects IR/Transmits Visible 25 25 3.3 Borosilicate
£26.95
730FHQ4040 pdf Hot Mirror Reflects IR/Transmits Visible 40 40 3.3 Borosilicate
£29.95
730FHQ5051 pdf Hot Mirror Reflects IR/Transmits Visible 50 50 1.1 Borosilicate
£32.50
730FHQ5050 pdf Hot Mirror Reflects IR/Transmits Visible 50 50 3.3 Borosilicate
£37.45
730FHQ6565 pdf Hot Mirror Reflects IR/Transmits Visible 65 65 3.3 Borosilicate
£47.50
730FHQ8080 pdf Hot Mirror Reflects IR/Transmits Visible 80 80 3.3 Borosilicate
£53.45
730FHQ100100 pdf Hot Mirror Reflects IR/Transmits Visible 100 100 3.3 Borosilicate
£74.95
730FHQ12080 pdf Hot Mirror Reflects IR/Transmits Visible 120 80 3.3 Borosilicate
£74.95

11 Items

1

Hot Mirrors

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