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Schott KG1 filters are used in lighting systems to remove the near IR thermal energy from a light source 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. 

Material:
Diameter:
Length/Width:
Thickness:
Surface Quality:
Flatness:
Parallelism:
KG1
+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)

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.

KG1

4 Items

Name Type Description Wavelength cut-on (nm) Wavelength cut-off (nm) Diameter (mm) Length (mm) Width (mm) Thickness (mm) Material Price Buy
716FHC2500 pdf Heat Glass Filter Absorbs IR/Transmits Visible 3200 716 25 3 KG1 or equivalent
$25.23
716FHC5000 pdf Heat Glass Filter Absorbs IR/Transmits Visible 3200 716 50 3 KG1 or equivalent
$45.04
716FHC5050 pdf Heat Glass Filter Absorbs IR/Transmits Visible 3200 716 50 50 3 KG1 or equivalent
$50.30
716FHC6565 pdf Heat Glass Filter Absorbs IR/Transmits Visible 3200 716 65 65 3 KG1 or equivalent
$57.34

4 Items

1

Heat Glass Filters

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