公开(公告)号：US06362876B1

公开(公告)日：2002-03-26

申请号：US09598261

申请日：2000-06-21

Applicant: Shian-Fu Lai

Inventor： Shian-Fu Lai

IPC: G01J142

CPC classification number: G01J1/4257 ,  H01S5/02248 ,  H01S5/0683

Abstract: A laser beam power detecting device for planar type semiconductor laser diode is disclosed. The laser beam power detecting device includes a heat dissipation substrate mounted on a printed circuit board, and a laser diode mounted on the heat dissipation substrate. The laser diode is capable of emitting a first laser beam toward a front end thereof and a second laser beam toward a rear end thereof. A light reflecting plate is mounted on the printed circuit board and at a rear area of the heat dissipation substrate for reflecting the second laser beam emitted from the laser diode. A light detecting diode is arranged between the laser diode and the light reflecting plate for receiving the reflected laser beam reflected by the light reflecting plate, thereby detecting an output power of the first laser beam emitted by the laser beam and then controlling the driving current of the laser diode under control of a control circuit.

Abstract translation: 公开了一种用于平面型半导体激光二极管的激光束功率检测装置。 激光束功率检测装置包括安装在印刷电路板上的散热基板和安装在散热基板上的激光二极管。 激光二极管能够朝向其前端发射第一激光束，并且朝向其后端发射第二激光束。 光反射板安装在印刷电路板和散热基板的后部区域，用于反射从激光二极管发射的第二激光束。 在激光二极管和光反射板之间设置光检测二极管，用于接收由反射板反射的反射激光束，从而检测由激光束发射的第一激光束的输出功率，然后控制驱动电流 激光二极管在控制电路的控制下。