Patent ID: 6142642
Filing Date: 2000-11-07
Classification: C03C,G02B

Abstract:
A heat formable mirror comprising a flat substrate capable of plastic flow upon application of heat, and a sputter-deposited reflective coating formed on a surface of the substrate, the mirror being formable at elevated temperatures without significant damage to the reflective coating, the reflective coating comprising:a. a sputter-deposited base layer comprising a sputter-deposited silicon film having a thickness of 300-1500 .ANG.,b. a reflective layer positioned further from the substrate than the base layer and formed by sputter deposition of a reflective metallic film;c. between said silicon film and said reflective layer, a sputter-deposited stainless-steel film having a thickness of 50-250 .ANG.; andd. a durable protective layer positioned further from the substrate than either the base layer or the reflective layer, the protective layer providing sufficient oxygen permeation inhibition as to prevent the reflectance of the mirror from decreasing upon heat bending to less than 50%.