Light collimating and diffusing film and system for making the film

US7280277B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Adel F. Bastawros · Newburgh, US
• Kevin Capaldo · Mount Vernon, US
• Ashwit Dias · Mauda, IN
• John Frederick Graf · Ballston Lake, US
• Emine Elif Gurel · Evansville, US
• Grant Hay · Niskayuna, US
• Marshall Gordon Jones · Scotia, US
• Karkala Arun Kumar · Evansville, US
• Steven Alfred Tysoe · Ballston Spa, US
• Masako Yamada · Kyoto, JP

Key dates

• Filing date: May 8, 2006
• Grant date: Oct 9, 2007
• Expiry date: May 8, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S359/90
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A light collimating and diffusing film and a method for making the film are provided. The film includes a plastic layer having a first side and a second side opposite the first side and at least a first peripheral edge. The first side has a first textured surface, wherein between 7 to 20 percent of slope angles on the first textured surface proximate a first axis has a value between zero and five degrees. The first axis is substantially parallel to the first peripheral edge. The plastic layer collimates light propagating therethrough.