A hot mirror is in essence a thin film coating applied to substrates in an effort to reflect infra-red radiation either as a means to harness the reflected wavelengths for an application or to remove them from an application.


Hot mirror filters transmit the visible spectrum and reflect the infrared at normal incidence.  The average transmittance is specified to be more than 93% from 425 to 675nm and average reflectance is more than 95% from 750 to 950nm.

Custom angles of incidence can be designed to specification.



Extreme performance hot mirrors offer enhanced UV blocking.
Average T >85% 420-680nm
Average T <1% 200-380nm
Average R >95% 730-1500nm

Custom angles of incidence can be designed to meet your requirements.