Transparent substrate comprising a stack of thin layers for electromagnetic armour

An article, comprising a transparent substrate, provided with a thin-film multilayer comprising three silver layers (Ag1, Ag2, Ag3) and alternately on the substrate, a titanium dioxide layer, a metal oxide layer, one of the silver layers (Ag1, Ag2, Ag3) and a covering layer and an antireflection layer comprising at least one metal oxide is deposited on the covering layer for the silver layer (Ag3) furthest away from the substrate, wherein:

• the metal oxide is zinc oxide;
• the covering layer is a sacrificial metal;
• and
• wherein the thicknesses (eAg1, eAg2, eAg3) of the silver layers (Ag1, Ag2, Ag3) vary in a ratio of between 0.8 and 1.2 and are such that eAg1≦eAg3≦eAg2 and wherein eAg1 corresponds to the thickness of the silver layer closest to the substrate and eAg3 corresponds to the thickness of the silver layer furthest from the substrate.