Abstract: The invention relates to a decorated structure (100) comprising an at least partially transparent substrate (1) an enamel-based decorative element (2) on one face of the substrate, a functional layer (3) that is chosen from an electrically supplied heating layer or a low-emissive layer, the layer being deposited on said face and at least partially covering said decorative element, and also the method for manufacturing this structure.

Abstract: An electric heating structure including a substrate and a heating element having a given specific resistance. The heating element includes an electrically conductive layer deposited on one of the faces of the substrate and supplied electrically, the heating element including a network of patterns functionally connected to the electrically conductive layer.

Abstract: This invention is directed to the production of photochromic glass microsheet which is particularly useful in the fabrication of transparent glass-plastic composite lenses. In such lenses, the photochromic microsheet will either be buried within the plastic or will act as a surface layer thereon. The microsheet consists essentially, in weight percent on the oxide basis as calculated from the batch, of 54-66% SiO.sub.2, 7-15% Al.sub.2 O.sub.3, 10-30% B.sub.2 O.sub.3, 3-15% Na.sub.2 O, 0.4-1.5% PbO, 0.2-0.5% Br, 0.5-1.2% Cl, 0.2-0.5% F, 0.008-0.03% CuO, and >0.03%-1% Ag.