Semi-transparent mirror, especially a vehicle rear view mirror, has a multilayer system including a silver layer and a protective zinc sulfide layer

摘要

A transparent substrate, bearing a semi-transparent reflective multilayer including a silver layer and a protective zinc sulfide layer, is new. Preferred Features: The multilayer comprises a silver layer between two zinc sulfide layers, an additional protective barrier layer of e.g. MgF2, BaF2, YF3, LaF3, Y2O3, SiO2, Al2O3 and/or MgO being interposed between the silver layer and a zinc sulfide layer.