High-strength laminated sheet for optical applications

US7514149B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Peter L. Bocko · Corning, US
• David Zhi Chen · Richardson, US
• Glen Bennett Cook · Elmira, US
• Frank Coppola · Horseheads, US
• Victoria Ann Edwards · Horseheads, US
• Gunilla Gillberg · Corning, US
• Josef C. Lapp · Corning, US
• Randy Lee Rhoads · Horseheads, US
• David Alan Tammaro · Corning, US
• Butchi Reddy Vaddi · Corning, US

Key dates

• Filing date: Apr 4, 2003
• Grant date: Apr 7, 2009
• Expiry date: Apr 26, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/26
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A laminated sheet includes a surface layer having an optical surface that is of fire-polished quality and a core layer having a higher modulus than the surface layer to increase an overall stiffness or fracture toughness of the laminated sheet.