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:
Mar. 08, 2016
Filed:
Oct. 22, 2010
Adam D. Haag, Woodbury, MN (US);
William F. Edmonds, Minneapolis, MN (US);
Jason S. Petaja, Cottage Grove, MN (US);
Eric W. Nelson, Stillwater, MN (US);
William Blake Kolb, West Lakeland, MN (US);
Encai Hao, Woodbury, MN (US);
Fei LU, Woodbury, MN (US);
Michael Benton Free, Saint Paul, MN (US);
Adam D. Haag, Woodbury, MN (US);
William F. Edmonds, Minneapolis, MN (US);
Jason S. Petaja, Cottage Grove, MN (US);
Eric W. Nelson, Stillwater, MN (US);
William Blake Kolb, West Lakeland, MN (US);
Encai Hao, Woodbury, MN (US);
Fei Lu, Woodbury, MN (US);
Michael Benton Free, Saint Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A gradient optical film and an optical construction including the gradient optical film are described. The gradient optical film includes a binder, a plurality of particles, and a plurality of interconnected voids having a local volume fraction. The local volume fraction of the plurality of interconnected voids varies along a thickness direction of the gradient optical film. The refractive index of the gradient optical film can also varies along a thickness direction of the gradient optical film, as the refractive index can also depend upon the local volume fraction of the plurality of interconnected voids.