Patent ID: 7838134
Filing Date: 2010-11-23
Classification: G02B,Y10T

Abstract:
1. A reflective mirror having high reflectance over a large spectral range, comprising: a substrate comprising an absorbent non-aluminum metal layer on at least a surface thereof, said absorbent non-aluminum metal layer comprising at least one of tungsten, tantalum, nickel, chromium, and alloys thereof; an adhesion layer deposited directly on the absorbent non-aluminum metal layer, said adhesion layer comprising a material selected from the group consisting of nickel, nickel nitride, chromium, chromium nitride, nickel-chromium alloys, and nickel-chromium nitride; a reflective silver layer deposited on the adhesion layer so that light transmitted through the silver layer is absorbed by the absorbent non-aluminum metal layer to increase the reflection of the silver layer at all wavelengths; a passivation layer deposited on the silver layer, comprising a material selected from the group consisting of nickel, nickel nitride, chromium, chromium nitride, nickel-chromium alloys, and nickel-chromium nitride; a nitride layer deposited on the passivation layer; and a plurality stack of metal oxide layers deposited on the nitride layer.