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:
Sep. 30, 2014
Filed:
Feb. 06, 2009
Mark B. O'neill, Stillwater, MN (US);
Shandon D. Hart, Corning, NY (US);
Kenneth A. Epstein, St. Paul, MN (US);
David G. Freier, St. Paul, MN (US);
David J. Lamb, Oakdale, MN (US);
Mark B. O'Neill, Stillwater, MN (US);
Shandon D. Hart, Corning, NY (US);
Kenneth A. Epstein, St. Paul, MN (US);
David G. Freier, St. Paul, MN (US);
David J. Lamb, Oakdale, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A backlight () that includes a front reflector () and a back reflector () that form a hollow light recycling cavity () having an output surface () is disclosed. The front reflector includes at least four directional recycling films (). The backlight also includes a semi-specular diffuser disposed between the front reflector and the back reflector, and one or more light sources () disposed to emit light into the light recycling cavity.