发明申请
- 专利标题: DRIVE CIRCUIT AND DRIVE METHOD FOR SEMICONDUCTOR LIGHT SOURCE
- 专利标题(中): 用于半导体光源的驱动电路和驱动方法
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申请号: US12192047申请日: 2008-08-14
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公开(公告)号: US20080317079A1公开(公告)日: 2008-12-25
- 发明人: Hajime Motoyama
- 申请人: Hajime Motoyama
- 申请人地址: JP Tokyo
- 专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人地址: JP Tokyo
- 优先权: JP2005-046226 20050222
- 主分类号: H01S3/00
- IPC分类号: H01S3/00
摘要:
a circuit for driving a semiconductor laser including a semiconductor integrated circuit, which controls the drive of the semiconductor laser, and is connected to one end of the semiconductor laser. Moreover, the driving circuit incorporates a first power source +Vcc that supplies by way of the semiconductor integrated circuit a drive voltage to one end of the semiconductor laser and a second power source −Vcc, which is connected to the other end of the semiconductor laser and supplies a drive voltage to the other end. Furthermore, the drive circuit incorporates a voltage clamp circuit, connected to a connection terminal connecting the semiconductor laser and the semiconductor integrated circuit, for adjusting the electric potential of the connection terminal.