Scratch-resistant optical multi-layer system applied to a crystalline substrate

US8133573B2 · kind B2 · utility

Assignee

• Leibniz-Institut für Neue Materialien gemeinnützige GmbH · DE

Inventors

• Mohammad Jilavi · Kirkel, DE
• Martin Mennig · Idar-Oberstein, DE
• Peter W. Oliveira · Riegelsberg, DE
• Helmut Schmidt · Riegelsberg, DE

Key dates

• Filing date: Mar 16, 2005
• Grant date: Mar 13, 2012
• Expiry date: Mar 11, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31855
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A process for producing a crystalline substrate with an optical multi-layer system thereon and the crystalline substrate obtainable thereby. The process comprises the successive application of at least two free-flowing compositions which comprise nanoscale inorganic solid particles comprising at least one of a polymerizable and a polycondensable organic group to a surface of the crystalline substrate and the polymerization and/or polycondensation of the organic groups of the solid particles to form organically crosslinked layers on the substrate and a single-stage thermal consolidation of these layers with a burnout of organic constituents thereof. The at least two compositions give rise to layers with different refractive indices.