HIGH TRANSMITTANCES LOW EMISSIVITY ARTICLES AND PROCESS FOR MAKING

摘要

A high transmittance, low emissivity article comprises a transparent non-metallic substrate coated, in sequence, with a first transparent antireflective metal oxide film, a transparent IR reflective metallic film, a second transparent antireflective metal oxide film and a protective metal oxide overcoat (pref. of titanium oxide). The substrate is glass and is pref. coated with the films by sputtering. The reflective metallic film is silver and the metal oxide is an oxide reaction product of a zinc-tin alloy, e.g. zinc stannate. A primer film of copper (oxide) or indium (oxide) is pref. deposited between the reflective metallic film and the metal oxide atireflective film.