Abstract: A glass article for motor vehicles, in particular a windshield, is provided with a transparent multilayered coating for simultaneously reducing the transmission of incident light energy and combining data relating to driving with the images of the outer environment. The glass article has the following sequence of layers: (glass)/TiO.sub.2 or Al.sub.2 O.sub.3)/(Al.sub.2 O.sub.3 or SiO.sub.2)/(Al or Al/Ag or Ag/Al or Ag)/(Al.sub.2 O.sub.3 or SiO.sub.3)/(TiO.sub.2 or Al.sub.2 O.sub.3). The transparent coating has the capacity of screening solar radiation and sorting information derived from an apparatus of the head-up display type.

Abstract: A process for the manufacture of a glass capable of transmitting and reflecting radiant energy in an amount different from that transmitted and reflected by the original glass is disclosed. An ion implantation of appropriate materials into one or more layers of the glass produces a variation of density in the molecular structure of the layer and consequently a variation of the refractive index. The so obtained glass can be commercially used with no restrictions as to applications where there is contact with the external environment.

Abstract: A process for the production of a safety glass for instance for cars or buildings, said glass being made of a sheet of glass and a sheet of plastic material, through press forming on said glass sheet of a composition having a urethanic/acrylic/vinylic base.

Abstract: The present invention provides an apparatus and process for depositing a thin layer on the surface of a transparent substrate by the known process of cathodic sputtering. Atoms for forming the thin layer are produced from four cathodic plates arranged so as to form a rectangular parallelepiped. An anode covers one open end of the parallelepiped, and the substrate receving the thin layer is placed at the other open end of the parallelepiped. A magnetic field is produced by a permanent magnet, and the entire apparatus is supported by a metal support. A cooling channel surrounds the parallelepiped to enable the cooling of the cathodic plates.

Abstract: The invention relates to a manufactured article formed of two transparent layers, preferably one made of glass and the other made of plastic, adapted to be used as glazing for motor vehicle windows and buildings, consisting of a glass substrate onto which is applied a single-layer plastic comprising a composition of polycaprolactones, a vinyl monomer N-vinyl-2-pyrrolidone, mono-, di-, tri-, tetra-acrylic monomers, a photoinitiator, and flow control agents, reaction catalysts, solvents, plasticizers and adhesion promoters, and aliphatic polyisocyanate, which composition is distributed as a liquid with uniform thickness over the surface, which is spun and exposed to ultraviolet radiation to form the coating.

Abstract: Process for manufacturing a safety motor vehicle windshield, more especially as regards lower formation of glass fragments in the event of impact or fracture of said windshield.The process consists in coating the inside surface of said windshield with a liquid composition, which, after curing with ultraviolet and infrared rays, from a high strength, hard and flexible film.The coating is prepared so that, during the curing process, a polyurethane of aliphatic polycaprolactone is formed as an interpenetrating network system, with a partially crosslinked vinylacrylic copolymer, the whole being formed in the presence of a controlled quantity of a polyester urethane acrylate prepolymer.

Abstract: There is provided a stationary optical longitudinal refractor for concentrating solar radiation which comprises at least two dioptric elements having different focal points such that the refractor is capable of concentrating solar energy striking it onto an absorber of a subtially smaller area than the exposed area of said refractor, with a concentration ratio equal to or greater than 2.

Abstract: The present invention provides a fixed refractor of transparent material consisting of various afocal adjacent straight prismatic elements of specific dimensions which are asymmetrically arranged about an axis parallel to the length of said prisms, to obtain a solar energy concentrating power equal to or greater than 2.6 for a substantial portion of the day.