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:
Jan. 09, 2007
Filed:
Jun. 03, 2004
Junwon Lee, Webster, NY (US);
David Kessler, Rochester, NY (US);
Junwon Lee, Webster, NY (US);
David Kessler, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A brightness enhancement article () provides light from a two-dimensional surface. The brightness enhancement article () has a plurality of light collecting structures (), wherein each light collecting structure () is longitudinally extended in a length direction along the surface. Each light collecting structure () has an input aperture () optically coupled to a light-providing surface and an output aperture () distal from the input aperture (), wherein the output aperture () has a surface area that is larger than the surface area of the input aperture (). A pair of curved side walls () extend from the output aperture () toward the input aperture (). In a cross section taken orthogonally with respect to the length direction, the curved side walls () approximate a parabolic curvature.