SCHOTT KG1 - KG5 heat absorbing filters have a high density for infrared light. The optical color glass filters are mainly used in lighting systems to absorb heat, which is emitted from a light source. At the same time, the glass filters offer a high, relatively color neutral visible light transmission. The filter optics heat up during operation caused by absorption of heat energy, so the thermal energy can be removed from the illumination system by cooling or ventilating the glass filter. When a heat absorbing filter must withstand very high operating temperatures, it is recommended to thermally temper the filter glass, after it has been polished and shaped. Our KG-optical glass filters are fabricated from original SCHOTT raw filter materials which exist as unpolished raw filter squares or as unpolished rolled filter sheet materials. All heat absorbing filters are ground, polished and shaped to customer's specifications. Please use our inquiry form to request your custom made heat absorbing filter.
Note: All filter dimensions at 50mm x 50mm and smaller and at 1mm, 2mm or 3mm typically ship within 1 working week.
To ask for a quotation for a KG Heat Absorbing Filter, please click the button below:
Visit our online SCHOTT-filter calculator for the calculation of the transmission of all available color glass filters made of SCHOTT filter material is online and at your free disposal. Using our calculator, you can compute individual filter transmission curves. You can choose to see the internal transmittance, or the external transmittance of the glass filters including surface reflection losses.
Show transmission of KG1, KG2, KG3, KG4 and KG5
IR- absorbing glass filters at 200-1100nm
Show internal transmission at 1000-4600nm
Further detailed information about this product is available