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. 01, 2013
Filed:
Aug. 04, 2008
Yuhsaku Ajichi, Osaka, JP;
Yuhsaku Ajichi, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A backlight includes a spot-shaped light source and a light guide unit including a light guide arranged to diffuse and surface-emit light from the light source. The light guide unit includes a substrate to dispose and fixate the light source and the light guide. Protruding sections are provided on an incident surface of the light guide upon which light from the light source is incident, so as to protrude in a direction opposite to an incident direction of the light from the light source. Further, the light guide is fixedly disposed on the substrate by connecting the protruding sections to the substrate. As a result, with the illumination device including the light source and the light guide, it is possible to achieve an illumination device with a higher light use efficiency and higher luminance homogeneity.