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    • 5. 发明授权
    • Laser diode driving device and optical scanning device
    • 激光二极管驱动装置和光学扫描装置
    • US07760780B2
    • 2010-07-20
    • US12169363
    • 2008-07-08
    • Takashi Kanno
    • Takashi Kanno
    • H01S3/00
    • H01S5/06832B41J2/442H01S5/06812H01S5/183
    • A laser diode driving device capable of obtaining a stable pulse emission state even when variation in the current-light amount characteristic of a laser diode thereof is caused by environmental changes. A photodiode detects the amount of light emitted from the laser diode. A laser controller determines the amount of light to be emitted from the laser diode. Further, the laser controller controls the laser diode to emit light in the determined light amount. A bias current value-determining section determines a bias current value based on results of light emission performed by the laser diode in three or more kinds of light amounts determined by the laser controller.
    • 激光二极管驱动装置即使在其激光二极管的电流光量特性的变化是由环境变化引起的情况下也能获得稳定的脉冲发射状态。 光电二极管检测从激光二极管发射的光量。 激光控制器确定从激光二极管发射的光量。 此外,激光控制器控制激光二极管以确定的光量发光。 偏置电流值确定部基于由激光控制器确定的三种或更多种光量,基于由激光二极管执行的发光结果来确定偏置电流值。