公开(公告)号：US09048370B1

公开(公告)日：2015-06-02

申请号：US13804455

申请日：2013-03-14

Applicant: Google Inc.

Inventor： Chris Urmson ,  Pierre-yves Droz ,  Luke Wachter

IPC: G01J1/44 ,  H01L31/107

CPC classification number: H01L31/107 ,  G01R31/2635 ,  G01S7/497 ,  H01L31/02027

Abstract: Methods and devices are provided for determining an operating bias voltage of a photodiode. One example method includes (i) varying a bias voltage of a photodiode; (ii) detecting spurious signals generated by the photodiode while varying the bias voltage of the photodiode; (iii) determining a threshold bias voltage at which a frequency of occurrence of the spurious signals reaches a threshold frequency; (iv) determining an operating bias voltage for the photodiode based on at least the threshold bias voltage; and (v) operating the photodiode with the operating bias voltage in a light-detection and ranging (LIDAR) system.

Abstract translation: 提供了用于确定光电二极管的工作偏置电压的方法和装置。 一个示例性方法包括（i）改变光电二极管的偏置电压; （ii）检测由光电二极管产生的寄生信号，同时改变光电二极管的偏置电压; （iii）确定杂散信号的出现频率达到阈值频率的阈值偏置电压; （iv）至少基于所述阈值偏置电压确定所述光电二极管的工作偏置电压; 和（v）在光检测和测距（LIDAR）系统中操作具有工作偏置电压的光电二极管。