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:
Dec. 31, 2013
Filed:
Aug. 23, 2010
Osamu Maeda, Kanagawa, JP;
Katsuhisa Daio, Kagoshima, JP;
Koichi Kobe, Kanagawa, JP;
Takehiro Taniguchi, Tokyo, JP;
Takahiro Arakida, Kanagawa, JP;
Osamu Maeda, Kanagawa, JP;
Katsuhisa Daio, Kagoshima, JP;
Koichi Kobe, Kanagawa, JP;
Takehiro Taniguchi, Tokyo, JP;
Takahiro Arakida, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A correction circuit is provided, which may reduce dullness of a light output waveform due to wavelength detuning. The correction circuit includes an RC time constant circuit. The RC time constant circuit is used to correct a waveform of a current pulse outputted from a current source, the current source driving a surface-emitting semiconductor laser in a pulsed manner, so that a pulse waveform of light output of the semiconductor laser is approximately a rectangle.