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:
Apr. 14, 2015
Filed:
Sep. 28, 2011
William J. Bryan, Mahtomedi, MN (US);
John C. Schultz, Afton, MN (US);
Michael A. Meis, Stillwater, MN (US);
Patrick R. Destain, Loveland, OH (US);
William J. Bryan, Mahtomedi, MN (US);
John C. Schultz, Afton, MN (US);
Michael A. Meis, Stillwater, MN (US);
Patrick R. Destain, Loveland, OH (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
A backlight is disclosed and includes a visible light transmissive body primarily propagating light by TIR with a light input surface and a light output surface and a light guide portion and a light input portion. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. One of the opposing surfaces is co-planar with either the light emission surface or the light reflection surface. A light source is disposed adjacent to the light input surface. The light source emits light into the light input portion. A reflective layer is disposed adjacent to or on the opposing side surfaces.