Optical Clamificaticn Of Transparent Heat-Mirrors

The combination of visible transmittance and IR-reflectance of a heat-mirror is essentially a property of a Drude-type material. The difference between the heat-mirror materials is that the desired transmittance occurs in different spectral regions of the Dnxie model and accordingly is subjected to different optical limitations. Based on these observations the existing transparent heat-mirrors are optically classified and new materials like TiN, ZrN, HfN LaB6, GdSe, Ir02, Ru02' Re03 and NaxWO3 are suggested.