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:
Mar. 19, 2013
Filed:
Sep. 17, 2010
Yoshinobu Kawaguchi, Osaka, JP;
Kenichi Yoshimura, Osaka, JP;
Masamichi Harada, Osaka, JP;
Katsuhiko Kishimoto, Osaka, JP;
Yoshinobu Kawaguchi, Osaka, JP;
Kenichi Yoshimura, Osaka, JP;
Masamichi Harada, Osaka, JP;
Katsuhiko Kishimoto, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka-shi, JP;
Abstract
An illumination device improved in safety to the eye is provided. The illumination device includes: a semiconductor laser element to serve as an excitation light source which emits laser light; a fluorescent plate which contains a fluorescent substance for emitting light of a desired color and is irradiated with laser light emitted from the semiconductor laser element; a light receiving element part which detects light reflected from the fluorescent plate; and a light source control part which controls laser light emitted from the semiconductor laser element based on a detection signal from the light receiving element part.