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:
Jul. 14, 2009
Filed:
Mar. 14, 2005
Daijiro Inoue, Kyoto, JP;
Yasuyuki Bessho, Hirakata, JP;
Masayuki Hata, Kadoma, JP;
Yasuhiko Nomura, Moriguchi, JP;
Daijiro Inoue, Kyoto, JP;
Yasuyuki Bessho, Hirakata, JP;
Masayuki Hata, Kadoma, JP;
Yasuhiko Nomura, Moriguchi, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A semiconductor laser apparatus comprises a first semiconductor laser device that emits a blue-violet laser beam, a second semiconductor laser device that emits a red laser beam, and a conductive package body. The first semiconductor laser device has a p-side pad electrode and an n-side electrode. The p-side pad electrode and n-side electrode of the first semiconductor laser device are electrically isolated from the package body. The p-side pad electrode of the first semiconductor laser device is connected with a drive circuit that generates a positive potential, while the n-side electrode thereof is connected with a dc power supply that generates a negative potential.