| abstract |
A heated mirror includes a transparent substrate with a reflective coating covering at least one of the substrate surfaces. The reflective coating includes a stack of transparent, non-metallic layers which have alternately high and low indices of refraction. At least one of the layers has a high index of refraction and is constructed from electrically conductive, transparent, non-metallic material through which electric current flows to heat the mirror. The remaining layers of the coating are constructed of transparent, dielectric material. |