公开(公告)号：US20200271783A1

公开(公告)日：2020-08-27

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

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.