Light redirecting film and display system incorporating same

US10156661B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Robert A. Yapel · Oakdale, US
• Joseph T. Aronson · Menomonie, US
• Matthew R.C. Atkinson · Elbow Lake, US
• Gary T. Boyd · Woodbury, US
• Slah Jendoubi · Fridley, US
• Mitchell A. F. Johnson · Maplewood, US
• Scott R. Kaytor · Woodbury, US
• Steven H. Kong · Woodbury, US
• Fei Lu · Shanghai, CN
• Tri D. Pham · Woodbury, US
• Robert B. Secor · Stillwater, US
• Steven D. Solomonson · Shoreview, US

Key dates

• Filing date: May 17, 2011
• Grant date: Dec 18, 2018
• Expiry date: Feb 22, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B5/0278
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical film having a structured surface is described. At least 90% of the structured surface has a slope magnitude that is less than about 5 degrees. The optical film may have an optical haze of less than about 10% and an optical clarity of less than about 50%, or may have an optical haze of less than about 7.5% and an optical clarity of less than about 60%, or may have an optical haze of less than about 3% and an optical clarity of less than about 65%.