Article having optimised thermomechanical properties, comprising a layer of titano-organic nature

US10585211B2 · kind B2 · utility

Assignees

• CORPORATION DE L'ECOLE POLYTECHNIQUE DE MONTREAL · CA
• Essilor International · FR

Inventors

• Oleg Zabeida · Montréal, CA
• Thomas Schmitt · Forchheim, DE
• Jolanta Sapieha · Rue du Bois des Loges, CA
• Ludvik Martinu · Longueuil, CA
• Karin Scherer · Charenton-le-Pont, FR

Key dates

• Filing date: Apr 28, 2014
• Grant date: Mar 10, 2020
• Expiry date: May 12, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B1/041
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to an article comprising a substrate having at least one major surface coated with a layer A of a material obtained by ion beam assisted vacuum deposition of at least one titanium oxide and of at least one organosilicate compound B, said material having a refractive index at 550 nm higher than or equal to 1.8, an extinction coefficient k at 550 nm lower than or equal to 0.02, and an H:E ratio higher than or equal to 0.046, where H and E designate the hardness of the material and the elastic coefficient of the material, respectively.