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:
May. 29, 2012
Filed:
Sep. 28, 2007
Tetsuro Mizushima, Osaka, JP;
Akihiro Morikawa, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Kenichi Kasazumi, Osaka, JP;
Hiroyuki Furuya, Nara, JP;
Shinichi Kadowaki, Hyogo, JP;
Tetsuro Mizushima, Osaka, JP;
Akihiro Morikawa, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Kenichi Kasazumi, Osaka, JP;
Hiroyuki Furuya, Nara, JP;
Shinichi Kadowaki, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A laser emission device comprises a plurality of laser elements, a plurality of laser driving power supplies, optical elements which uniformize the laser light amount distributions of laser lights, plural light-receiving elements, a measurement unit which measures at least the relations between the operation current values of the laser elements and the output power values of the laser lights with respect to the operation current values, and the control unit operates the laser driving power supplies according to the operation current values and the output power values so as to make the light output powers of the laser elements different from each other.