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:
Jun. 30, 2020
Filed:
Apr. 14, 2016
3m Innovative Properties Company, St. Paul, MN (US);
Gary T. Boyd, Woodbury, MN (US);
Tri D. Pham, Woodbury, MN (US);
Nicholas A. Johnson, Burnsville, MN (US);
Oanh V. Pham, Maplewood, MN (US);
Sara S. Merritt, Grant, MN (US);
Stephen J. Etzkorn, Woodbury, MN (US);
Haiyan Zhang, Lake Elmo, MN (US);
Corey D. Balts, Eau Claire, WI (US);
Joseph T. Aronson, Menomonie, WI (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A diffuser including opposing structured first and second major surfaces is described. The first major surface includes a first plurality of surface structures providing a uniform first haze. The second major surface includes a first portion adjacent an edge and a second portion adjacent the first portion. The first portion includes a first region and a second region between the first region and the second portion. The second major surface includes a second plurality of surface structures providing a uniform second haze over the second portion and providing a third haze in the first portion. The third haze in the first region is higher than the second haze, and the third haze in the second region is monotonically decreasing. The second portion has a surface area of at least 90 percent of a surface area of the second major surface.