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. 18, 2011
Filed:
Jul. 11, 2006
Akihiro Morikawa, Osaka, JP;
Ken'ichi Kasazumi, Osaka, JP;
Tetsuro Mizushima, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Shin-ichi Kadowaki, Hyogo, JP;
Akihiro Morikawa, Osaka, JP;
Ken'ichi Kasazumi, Osaka, JP;
Tetsuro Mizushima, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Shin-ichi Kadowaki, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The light sources according to the present invention include a laser oscillator including a semiconductor laser, a drive circuit for the semiconductor laser, an ACC circuit, an APC circuit, and a switch, and a starting drive current storage device, and is controlled in such a manner that the driving current at the start of the laser driving be always constant, and after the start of the lighting, it is switched to the APC operation to carry out the power control of the laser light output.