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:
Nov. 27, 2012
Filed:
Jul. 23, 2007
Takayuki Nagata, Osaka, JP;
Shinichi Kadowaki, Hyogo, JP;
Kazuhisa Yamamoto, Osaka, JP;
Tatsuo Itoh, Osaka, JP;
Takayuki Nagata, Osaka, JP;
Shinichi Kadowaki, Hyogo, JP;
Kazuhisa Yamamoto, Osaka, JP;
Tatsuo Itoh, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A planar illumination device includes an optical element outputting a diffusing light from a laser light source into an incident edge surface of a light guide plate. The optical element provides an output substantially parallel to a thickness direction of the light guide plate. A light deflecting unit, including a plurality of deflectors, is provided on a principal surface of the light guide plate for deflecting incident laser light towards an output surface of the light guide. The light deflecting unit is arranged such that a degree of deflection of the light incident on the light guide plate differs according to positions in the light guide plate, to make an amount of light outputted from the output surface uniform across such output surface.