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:
Oct. 30, 2012
Filed:
Jan. 28, 2009
Applicant:
Toshiki Onishi, Osaka, JP;
Inventor:
Toshiki Onishi, Osaka, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
F21V 9/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A surface light source device from which large planar light with a uniform light intensity distribution can be obtained from spot-like laser light. The surface light source device () comprises a laser light source () for emitting the laser light, an optical system including one or more reflective diffusion members (), and an optical waveguide () combined with the optical system for converting the reflected and diffused laser light into the planar light and emitting from a principal plane. The reflective diffusion member () converts the laser light emitted from the laser light source () into linear light having an arcuate radiation pattern.