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Knight Optical(UK) Ltd - [email protected] - +44 (0)1622 859444

Hot mirrors 0° (standard type)

What are you looking for in Stock?

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°)*: > 92% [email protected] 425-710nm
Reflectance (0°)*: > 95% [email protected] 780-1150nm
Material data : Borosilicate (LEGB float) or equivalent
Diameter: +0.0 / -0.2 mm
Length/width: ± 0.2 mm
Thickness: ± 0.25 mm
Surface quality: <60-40 scratch/dig
Flatness: < average 5λ over 25mm (sheeted material)
Parallelism: < average 10 arcmin (not guaranteed)

Note:
Wavelength cut-off listed in table is transition cut-on wavelength (T=Tmax/2)
Wavelength cut-on listed in table is transition cut-off wavelength (T=Tmax/2) 
Coating Specification:
Multilayer dielectric
Transmittance (0° AOI) >92% average over 425-710nm
Reflectance (0° AOI) >95% average over 780-1150nm Hot Mirror Coating (0°)

  • 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.

Coating Specification:
Multilayer dielectric
Transmittance (0° AOI) >92% average over 425-710nm
Reflectance (0° AOI) >95% average over 780-1150nm Hot Mirror Coating (0°)

Stock Optics

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Part No. TypeDescriptionDiameter
(mm)
Length
(mm)
Width
(mm)
Thickness
(mm)
Material Price
(Ex.VAT)
Buy
730FHQ100100 Download Hot MirrorReflects IR/Transmits Visible1001003.3Borosilicate £74.95
730FHQ12080 Download Hot MirrorReflects IR/Transmits Visible120803.3Borosilicate £74.95
730FHQ2500 Download Hot MirrorReflects IR/Transmits Visible253.3Borosilicate £29.95
730FHQ2525 Download Hot MirrorReflects IR/Transmits Visible25253.3Borosilicate £26.95
730FHQ4000 Download Hot MirrorReflects IR/Transmits Visible403.3Borosilicate £35.25
730FHQ4040 Download Hot MirrorReflects IR/Transmits Visible40403.3Borosilicate £29.95
730FHQ5000 Download Hot MirrorReflects IR/Transmits Visible503.3Borosilicate £39.95
730FHQ5050 Download Hot MirrorReflects IR/Transmits Visible50503.3Borosilicate £37.45
730FHQ5051 Download Hot MirrorReflects IR/Transmits Visible50501.1Borosilicate £32.50
730FHQ6565 Download Hot MirrorReflects IR/Transmits Visible65653.3Borosilicate £47.50
730FHQ8080 Download Hot MirrorReflects IR/Transmits Visible80803.3Borosilicate £53.45

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Our Multi-Lingual Sales Team are here to help with your requirments:

UK +44 (0)1622 859444
UK +44 (0)1622 850614
UK +44 (0)1622 851078
+1 401 583 7846

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