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Knight Optical(UK) Ltd - sales@knightoptical.co.uk - +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% avg.@ 425-710nm
Reflectance (0°)*: > 95% avg.@ 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. DescriptionDiameter
(mm)
Length
(mm)
Width
(mm)
Thick
(mm)
Material Price
(Ex.VAT)
Buy
730FHQ100100 Download IR reflect/ Vis transmit1001003.3Borosilicate £82.90
730FHQ12080 Download IR reflect/ Vis transmit120803.3Borosilicate £80.00
730FHQ2500 Download IR reflect/ Vis transmit253.3Borosilicate £16.50
730FHQ2525 Download IR reflect/ Vis transmit25253.3Borosilicate £14.50
730FHQ4000 Download IR reflect/ Vis transmit403.3Borosilicate £33.85
730FHQ4040 Download IR reflect/ Vis transmit40403.3Borosilicate £25.90
730FHQ5000 Download IR reflect/ Vis transmit503.3Borosilicate £39.90
730FHQ5050 Download IR reflect/ Vis transmit50503.3Borosilicate £35.25
730FHQ5051 Download IR reflect/ Vis transmit50501.1Borosilicate £32.50
730FHQ6565 Download IR reflect/ Vis transmit65653.3Borosilicate £53.85
730FHQ8080 Download IR reflect/ Vis transmit80803.3Borosilicate £71.50

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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
US +001 401-583-7846

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