公开(公告)号：US07599416B2

公开(公告)日：2009-10-06

申请号：US12076518

申请日：2008-03-19

申请人： Shinichi Kubota

发明人： Shinichi Kubota

IPC分类号： H03K171/78

CPC分类号： H01S5/042

摘要： A disclosed laser diode driving circuit causes a laser diode to emit light by varying a current value of a current source in accordance with a control signal input externally and supplying a current that is the same as or proportional to the current value to the laser diode. The driving circuit includes correction circuitry for generating a reference forward voltage as a reference for the laser diode in accordance with a predetermined driving current for driving the laser diode, generating a forward voltage for the laser diode in accordance with the predetermined driving current, and correcting a current supplied to the laser diode so that the forward voltage becomes the same as the reference forward voltage.

摘要翻译： 所公开的激光二极管驱动电路使得激光二极管根据外部输入的控制信号改变电流源的电流值并向激光二极管提供与电流值相同或成比例的电流来发光。 驱动电路包括用于根据用于驱动激光二极管的预定驱动电流产生用于激光二极管的基准的参考正向电压的校正电路，根据预定的驱动电流产生用于激光二极管的正向电压，以及校正 提供给激光二极管的电流使得正向电压变得与参考正向电压相同。

公开(公告)号：US07899335B2

公开(公告)日：2011-03-01

申请号：US11793626

申请日：2005-08-17

申请人： Kazuko Nishimura ,  Hiroshi Kimura

发明人： Kazuko Nishimura ,  Hiroshi Kimura

IPC分类号： H01S3/00 ,  H03K171/78

CPC分类号： H01S5/042 ,  H01S5/0427

摘要： A light emitting element driving differential switch (2) includes first and second transistors (M1, M2). A third transistor (M3) is connected as an auxiliary switch in parallel to the first transistor (M1) whose drain is connected to a light emitting element (1). A third switch driving signal (IN3) is input to the third transistor (M3) to turn ON the third transistor (M3) at a slightly earlier point in time than when complementary switch driving signals (IN1, IN2) are input to the first and second transistors (M1, M2) to drive the first and second transistors (M1, M2). This improves the rising characteristics of the output from the light emitting element having a high power level.

摘要翻译： 发光元件驱动差动开关（2）包括第一和第二晶体管（M1，M2）。 第三晶体管（M3）作为辅助开关并联连接到漏极连接到发光元件（1）的第一晶体管（M1）。 第三开关驱动信号（IN3）被输入到第三晶体管（M3），以在比第一和第二开关驱动信号（IN1，IN2）输入互补开关驱动信号（IN1，IN2）时稍早一点的时间点接通第三晶体管 第二晶体管（M1，M2），以驱动第一和第二晶体管（M1，M2）。 这改善了具有高功率电平的发光元件的输出的上升特性。

公开(公告)号：US07369590B2

公开(公告)日：2008-05-06

申请号：US10947377

申请日：2004-09-23

申请人： Shinichi Kubota

发明人： Shinichi Kubota

IPC分类号： H03K171/78

CPC分类号： H01S5/042

摘要： A disclosed laser diode driving circuit causes a laser diode to emit light by varying a current value of a current source in accordance with a control signal input externally and supplying a current that is the same as or proportional to the current value to the laser diode. The driving circuit includes correction circuitry for generating a reference forward voltage as a reference for the laser diode in accordance with a predetermined driving current for driving the laser diode, generating a forward voltage for the laser diode in accordance with the predetermined driving current, and correcting a current supplied to the laser diode so that the forward voltage becomes the same as the reference forward voltage.

摘要翻译： 所公开的激光二极管驱动电路使得激光二极管根据外部输入的控制信号改变电流源的电流值并向激光二极管提供与电流值相同或成比例的电流来发光。 驱动电路包括用于根据用于驱动激光二极管的预定驱动电流产生用于激光二极管的基准的参考正向电压的校正电路，根据预定的驱动电流产生用于激光二极管的正向电压，以及校正 提供给激光二极管的电流使得正向电压变得与参考正向电压相同。