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. 31, 2020
Filed:
Jun. 07, 2017
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Nathaniel K. Naismith, Woodbury, MN (US);
Stephen J. Etzkorn, Woodbury, MN (US);
David A. Rosen, Maplewood, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133605 (2013.01); G02B 6/0055 (2013.01); G02B 6/0056 (2013.01); G02F 1/133536 (2013.01);
Abstract
Recycling backlights are described. More specifically, recycling backlights including structured reflectors are described. The structured reflector redirects light at least for angles emitted from a lightguide and retroreflects other light, the retroreflected light having incidence angles not emitted by the lightguide.