A projection assembly for a head-up display (HUD), includes a windshield, including outer and inner panes that are joined to one another via a thermoplastic intermediate layer and having an HUD region; and a projector aimed at the HUD region. The radiation of the projector is predominantly p-polarised, and the windshield is provided with a reflection coating that is suitable for reflecting p-polarised radiation. The reflection coating has exactly one electrically conductive layer based on silver, a lower dielectric layer or layer sequence whose refractive index is at least 1.9 is arranged beneath the electrically conductive layer, an upper dielectric layer or layer sequence whose refractive index is at least 1.9 is arranged above the electrically conductive layer, the ratio of the optical thickness of the upper dielectric layer or layer sequence to the optical thickness of the lower dielectric layer or layer sequence is at least 1.7.

A composite pane includes an outer pane, an inner pane, and a thermoplastic intermediate layer. The composite pane has, between the outer and inner panes, a solar protection coating that substantially reflects or absorbs rays outside the visible spectrum of solar radiation. The solar protection coating includes starting from the outer pane, a layer sequence of first dielectric module (M1), first silver layer (Ag1), second dielectric module (M2), second silver layer (Ag2), third dielectric module (M3), third dielectric module (M3), third silver layer (Ag3), fourth dielectric module (M4), wherein the silver layers (Ag1, Ag2, Ag3) have a layer thickness relative to one another of Ag1/Ag2>1 and Ag1/Ag3>1, and the dielectric modules (M1, M2, M3, M4) have a relative layer thickness of M2/M1>1, M2/M3>1, and M2/M4>1.

A method to provide for an enameled glazing including, a glass sheet, an enamel coating on at least a part of a first surface of the glass sheet, a multilayer coating on at least a part of a first surface of the glass sheet and at least partially on top of the enamel coating, such that the enamel coating either comprises no Bi.sub.4Si.sub.3O.sub.12, or, if it comprises Bi.sub.4Si.sub.3O.sub.12, the enamel coating exhibits a crystallinity ratio <5, as measured by XRD, where the crystallinity ratio is the ratio of Bi.sub.4Si.sub.3O.sub.12/Cr.sub.2CuO.sub.4.

A glass article having anti-sun properties includes a glass substrate having a stack of layers, which includes, successively from the surface of the substrate: a first module M.sub.1 having a layer based on a dielectric material with a thickness e.sub.1 or of a set of layers, a layer TN.sub.1 including titanium nitride with a thickness of between 2 nanometers and 80 nanometers, a second module M.sub.2 including a layer based on a dielectric material with a thickness e.sub.2 or of a set of layers based on dielectric materials with a cumulative thickness e.sub.2, an intermediate layer including at least one element selected from silicon, aluminum, titanium or a mixture of at least two of these elements is deposited between the layer TN.sub.1 and the first module M.sub.1 and/or between the layer TN.sub.1 and the second module M.sub.2, the intermediate layer having a thickness of between 0.2 nm and 6 nm.

A material includes a glass sheet coated on at least part of one of the faces thereof with a stack of thin layers, the stack of thin layers being coated on at least part of the surface thereof with an enamel layer not including bismuth, the enamel layer being coated with a non-stick layer.

A material includes a transparent substrate coated with a stack of thin layers acting on infrared radiation including at least one functional layer. The stack includes a carbon-based upper protective layer within which the carbon atoms are essentially in an sp.sup.2 hybridization state and the upper protective layer is deposited above at least a part of the functional layer and exhibits a thickness of less than 1 nm.

A material includes a transparent substrate coated with a stack of thin layers acting on infrared radiation including at least one functional layer. The stack includes a protective coating deposited above at least a part of the functional layer. The protective coating includes at least one lower protective layer based on titanium and zirconium, these two metals being in the metal, oxidized or nitrided form, and at least one upper protective layer of carbon, within which layer the carbon atoms are essentially in an sp.sup.2 hybridization state, located above the layer based on titanium and zirconium.

A transparent substrate includes a stack of thin layers successively including, starting from the substrate, an alternation of three metallic functional layers, in particular of functional layers based on silver or on silver-comprising metal alloy, and of four antireflective coatings, each antireflective coating including at least one dielectric layer, so that each metallic functional layer is positioned between two antireflective coatings, wherein: the thicknesses of the metallic functional layers, starting from the substrate, increase as a function of the distance from the substrate, the second metallic functional layer is directly in contact with a blocking layer, referred to as second blocking layer, chosen from a blocking underlayer and a blocking overlayer, respectively referred to as second blocking underlayer and second blocking overlayer, the second blocking underlayer and/or the second blocking overlayer exhibits a thickness of greater than 1 nm.

A material includes a transparent substrate coated with a stack including at least one silver-based functional metal layer and at least two dielectric coatings, each dielectric coating including at least one dielectric layer, so that each functional metal layer is placed between two dielectric coatings, wherein the dielectric coating located in contact with the substrate includes an intermediate coating including two different layers containing silicon, the two layers containing silicon consist of different chemical elements or composed of the same elements in different proportions.

A material includes a substrate coated with a stack including at least one silver-based functional metal layer and at least two dielectric coatings, each dielectric coating including at least one dielectric layer, so that each functional metal layer is between two dielectric coatings, wherein the dielectric coating located in contact with the substrate includes a layer including silicon selected from silicon oxynitride or nitride-based layers located in contact with the substrate; a layer based on zinc oxide and tin including at least 20% by mass of tin relative to the total mass of zinc and tin located in contact with the layer including silicon, the sum of thicknesses of all oxide-based layers present in the dielectric coating located between the substrate and the first functional metal layer and/or in each dielectric coating located above the first functional layer is greater than 50% of the total thickness of the dielectric coating.