公开(公告)号：US11487008B2

公开(公告)日：2022-11-01

申请号：US16494960

申请日：2018-03-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinzo Koyama ,  Masato Takemoto ,  Motonori Ishii ,  Yusuke Fukushima ,  Susumu Fukushima

IPC: G01S17/08 ,  G01S7/481 ,  G01S7/486 ,  G01S7/4865 ,  G01S7/497

Abstract: A distance measuring device includes a light emitter; a light receiver; a protection cover that is located on an optical path between the light emitter and the light receiver; a mode switch that switches between a first mode and a second mode; a distance calculator that calculates a distance from a target object based on a difference between a time when light is emitted from the light emitter and a time when reflected light is received by the light receiver in the first mode; and an LD light emission intensity adjuster that adjusts a light emission intensity of the light emitter. The adjustment is performed such that a light emission intensity of the light emitter in the second mode is lower than a light emission intensity of the light emitter in the first mode.