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. 12, 2018
Filed:
Jun. 03, 2015
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Brett J. Sitter, Cottage Grove, MN (US);
Marc D. Radcliffe, Newport, MN (US);
Thomas R. Hoffend, Jr., Pleasanton, CA (US);
Andrew J. Ouderkirk, St. Paul, MN (US);
Daniel W. Hennen, Cottage Grove, MN (US);
Lan H. Liu, Rosemount, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01); G02B 27/42 (2006.01); G02B 5/02 (2006.01);
U.S. Cl.
CPC ...
G02B 27/4216 (2013.01); G02B 5/0242 (2013.01); G02B 5/1814 (2013.01); G02B 5/1823 (2013.01);
Abstract
Optical stacks including a grating structure that generates diffraction in two in-plane dimensions. The optical stacks may include two gratings, which may be one-directional or two-directional, or may include a single two-directional grating. The optical stacks include particles selected to give controlled diffusion of light. The optical stacks are suitable for reducing sparkle in displays.