Hot Mirrors are heat filters that are used, to filter out the undesired infrared energy from a light source. They reflect infrared light while they are transparent for the visible spectrum. Our SIR heat reflecting hot mirror shows a decisive advantage over ordinary hot mirror coatings or absorbing filters. The transmission of visible light is higher and more neutral in color, while the thermal radiation up to 1100nm is reflected significantly more efficiently. Because of its 100% dielectric construction and the temperature-resistant quality BOROFLOAT® substrate, the SIR filter can withstand high temperatures. The standard SIR filter can stand operating temperatures of up to 400°C. Furthermore, IR-reflecting filters do not warm up as heavily as heat absorbing filters, because the warm IR-light is deflected and not absorbed. The filter coating design makes the SIR filter resistant to humidity and many other environmental conditions. The hot light filter is designed for an angle of incidence of 0°. Nevertheless, if a shifting of the cut-off is acceptable, our standard SIR hot mirror can also be used at incidence angles of 45°. If you want to use the SIR at other angles than 0°, please ask us for support and typical transmission curves.
All of our hot mirror coatings can be modified in regards to transmission and reflection wavelength ranges, as well as to the cut-on and cut-off wavelength and angles of incidences. Please use our custom optics RFQ form, to conveniently inquire your customized hot mirror or just contact us for further information.
For a quotation for our SIR hot mirror with individual dimensions, please click the button below: