Patent · US Active

Light redirecting film and display system incorporating same

US11226433B2 · kind B2 · utility

0Cited by

10References

20Claims

0Family size

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	Nov 9, 2018
Grant date	Jan 18, 2022
Priority date	—
Expiry date	Nov 9, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG02B5/0278
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Optical films for redirecting light are described, and optical systems, such as display systems, incorporating such optical films are described. The optical film may include a first structured surface including a plurality of prismatic structures, and a second structured surface opposing the first structured surface and including a plurality of microstructures. An effective transmission of the optical film is not more than 1% less than a film with a comparable construction except for a smooth, non-structured second surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.