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:
Jun. 04, 2013
Filed:
Aug. 08, 2008
Kentaro Hamana, Nara, JP;
Akira Enami, Ashiya, JP;
Yukari Terakawa, Kyoto, JP;
Keisuke Uno, Ikoma, JP;
Hayami Hosokawa, Kyoto, JP;
Kentaro Hamana, Nara, JP;
Akira Enami, Ashiya, JP;
Yukari Terakawa, Kyoto, JP;
Keisuke Uno, Ikoma, JP;
Hayami Hosokawa, Kyoto, JP;
OMRON Corporation, Kyoto, JP;
Abstract
A semiconductor laser drive apparatus comprises a bias current setting section () which sets a bias current value on the basis of the drive temperature so that the temperature characteristic of the bias current value with respect to the drive temperature may be a linear function having a slope except zero and a drive current setting section () for setting the drive current value on the basis of the drive temperature so that the temperature characteristic of the drive current value with respect to the drive temperature may be a function having a slope except zero. The temperature characteristic of the bias current and that of the drive current are functions different from each other. With this, low cost, space-saving, and power-saving of a semiconductor laser are achieved, and a semiconductor laser drive apparatus enabling a good transmission characteristic on the reception side and a high optical output over the whole drive temperature range when driving the semiconductor laser can be provided.