Invention Grant
US08619827B2 Correction circuit, drive circuit, light emitting device, and method of correcting current pulse waveform
有权
校正电路，驱动电路，发光装置及校正电流脉冲波形的方法
- Patent Title: Correction circuit, drive circuit, light emitting device, and method of correcting current pulse waveform
- Patent Title (中): 校正电路，驱动电路，发光装置及校正电流脉冲波形的方法
-
Application No.: US12805874Application Date: 2010-08-23
-
Publication No.: US08619827B2Publication Date: 2013-12-31
- Inventor: Osamu Maeda , Katsuhisa Daio , Koichi Kobe , Takehiro Taniguchi , Takahiro Arakida
- Applicant: Osamu Maeda , Katsuhisa Daio , Koichi Kobe , Takehiro Taniguchi , Takahiro Arakida
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Rader, Fishman & Grauer PLLC
- Priority: JP2009-221255 20090925
- Main IPC: H01S3/00
- IPC: H01S3/00
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.
Public/Granted literature
Information query
