The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2017
Filed:
Mar. 30, 2009
Ellen R. Bösl, Eagan, MN (US);
Bert T. Chien, St. Paul, MN (US);
Carsten Franke, St. Paul, MN (US);
Shandon D. Hart, Corning, NY (US);
Brent A. Hedding, Hudson, WI (US);
Donovan C. Karg, Jr., Vadnais Heights, MN (US);
Thomas J. Ludemann, Maplewood, MN (US);
Meghan A. Bradley, Simpsonville, SC (US);
Mark B. O'neill, Stillwater, MN (US);
Jeffrey A. Peterson, Lake Elmo, MN (US);
Joan M. Strobel, Maplewood, MN (US);
Huiwen Tai, Woodbury, MN (US);
John F. Van Derlofske, Iii, Minneapolis, MN (US);
Michael F. Weber, Shoreview, MN (US);
Chiu Ping Wong, Vadnais Heights, MN (US);
Richard J. Pokorny, Maplewood, MN (US);
John P. Baetzold, North St. Paul, MN (US);
Ellen R. Bösl, Eagan, MN (US);
Bert T. Chien, St. Paul, MN (US);
Carsten Franke, St. Paul, MN (US);
Shandon D. Hart, Corning, NY (US);
Brent A. Hedding, Hudson, WI (US);
Donovan C. Karg, Jr., Vadnais Heights, MN (US);
Thomas J. Ludemann, Maplewood, MN (US);
Meghan A. Bradley, Simpsonville, SC (US);
Mark B. O'Neill, Stillwater, MN (US);
Jeffrey A. Peterson, Lake Elmo, MN (US);
Joan M. Strobel, Maplewood, MN (US);
Huiwen Tai, Woodbury, MN (US);
John F. Van Derlofske, III, Minneapolis, MN (US);
Michael F. Weber, Shoreview, MN (US);
Chiu Ping Wong, Vadnais Heights, MN (US);
Richard J. Pokorny, Maplewood, MN (US);
John P. Baetzold, North St. Paul, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, Saint Paul, MN (US);
Abstract
An optical film that includes a reflective polarizer and a stretched polymer film is disclosed. The stretched polymer film is laminated to the reflective polarizer, and the stretched polymer film exhibits a refractive index symmetry point at an angle of incidence in air of at least about 60 degrees in a plane of incidence parallel to a direction of greatest stretch.