Solar controlled glazing and method of producing glazing

US4534841A · kind A · utility

Assignee

• Leybold-Heraeus GmbH · DE

Inventors

• Klaus Hartig · Ronneburg, DE
• Anton Dietrich · Fontnas, CH
• Michael Scherer · Crimmitschau, DE

Key dates

• Filing date: Mar 23, 1984
• Grant date: Aug 13, 1985
• Expiry date: Mar 23, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31627
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Solar-controlled glazing having a transmission of between 5 and 40% in the visible spectrum range and having heat-reflection properties is produced by applying an oxide layer having an optical thickness of between 20 and 280 nm directly to a transparent substrate by cathodic evaporation in an oxygen-containing atmosphere to form a first layer. A chromium nitride layer having a geometric thickness of between 10 and 40 nm is then applied in an atmosphere consisting of inert gas and nitrogen to provide a second layer. An optical third dielectric layer may be applied to the second layer. The oxide layer is selected from oxides of tin, titanium and aluminium.