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Knight Optical(UK) Ltd - sales@knightoptical.co.uk - +44 (0)1622 859444

KG1 heat glass filters

What are you looking for in Stock?

Schott KG1 filters are used in lighting systems to remove the near IR thermal energy from a light sourse and transmit the visible. As the heat is absorbed in the filter care must be taken that the filter does not overheat and crack.

To eliminate cracking of KG1 filters from excessive thermal energy KG1 filters are thermally toughened. Other KG glasses available in custom options are KG2, Schott KG3, Schott KG4 and Schott KG5 and chosen for their peak wavelength conditions. 

Also see our range of other Colour Glass Shortpass Filters for selective wavelength absorption.

Material data : KG1
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) 

  • Mounting of diameters and squares.
  • Antireflective coatings can be applied to one or both faces for improved transmission.
  • Cutting down or edged to special shapes and sizes at short notice.
  • Larger 165x165mm sheets available for larger custom sizes.
  • Russian and Asian equivalent KG1 filters available for sizes in excess of 300mm square.

Stock Optics

Get a Custom Quote

Part No. DescriptionWavelength cut-off(nm)Wavelength cut-on (nm)MaterialColourDiameter
(mm)
Length
(mm)
Width
(mm)
Thick
(mm)
Price
(Ex.VAT)
Buy
716FHC2500 Download IR absorb/ Vis transmit7163200KG1 or equivalentIR absorbing- toughened253 £16.50
716FHC4242 Download IR absorb/ Vis transmit7163200KG1 or equivalentIR absorbing- toughened42423 £46.00
716FHC5000 Download IR absorb/ Vis transmit7163200KG1 or equivalentIR absorbing- toughened503 £29.45
716FHC5050 Download IR absorb/ Vis transmit7163200KG1 or equivalentIR absorbing- toughened50503 £32.90
716FHC6565 Download IR absorb/ Vis transmit7163200KG1 or equivalentIR absorbing- toughened65653 £37.50

Get a Custom Quote

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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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