公开(公告)号：US20120211639A1

公开(公告)日：2012-08-23

申请号：US13402225

申请日：2012-02-22

申请人： Kohei YASUKAWA ,  Norikazu Okada ,  Yasuyuki Shirasaka

发明人： Kohei YASUKAWA ,  Norikazu Okada ,  Yasuyuki Shirasaka

IPC分类号： G01J1/44

CPC分类号： G01J1/44

摘要： The optical sensor includes a photodiode PD1 with its anode grounded, a diode group DG1 having one end connected to a cathode of the photodiode PD1, a current source I1 having one end connected to the other end of the diode group DG1, a power supply section for applying a constant voltage to the other end of the current source I1, and a grounded-emitter NPN transistor QOUT1 having a base connected to the cathode of the photodiode PD1 and a collector connected to one end of the current source I1. The diode group DG1 is provided by n diodes D1, D2, . . . , Dn connected in series so that their forward directions are directed toward the photodiode PD1 side, and a photocurrent which flows from a connecting point between the diode group and the current source to the photodiode is converted into a voltage and outputted as a photoelectric conversion signal.

摘要翻译： 光传感器包括其阳极接地的光电二极管PD1，一端连接到光电二极管PD1的阴极的二极管组DG1，一端连接到二极管组DG1的另一端的电流源I1，电源部分 用于向电流源I1的另一端施加恒定电压，以及具有连接到光电二极管PD1的阴极的基极的接地发射极NPN晶体管QOUT1和连接到电流源I1的一端的集电极。 二极管组DG1由n个二极管D1，D2提供。 。 。 ，Dn串联连接，使其正向指向光电二极管PD1侧，从二极管组和电流源之间的连接点流向光电二极管的光电流转换为电压并作为光电转换信号输出 。