Dichroic glass filter
An infrared (IR) reducing light filter designed to mount on the front glass of a lamp. Dichroic glass filters transmit visible and ultraviolet wavelengths of light while reflecting IR light back to the lamp source. The reflected IR adds heat to the source thus decreasing the total energy requirements.
Synonyms and Related Terms
filtre dichroïque (Fr.); filtro dicróico (Port.)
Coatings may deteriorate and change over time