公开(公告)号：US20190120960A1

公开(公告)日：2019-04-25

申请号：US16157995

申请日：2018-10-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TOSHIHIRO KOGA ,  KIYOSHI HIBINO ,  TAKASHI HARUGUCHI ,  KAZUHISA IDE ,  MASAOMI INOUE ,  MASAHIRO SHIIHARA ,  KOUICHI BAIRIN ,  KOUICHI KUMAMARU

IPC: G01S17/10 ,  G01S7/487

Abstract: There is provided a distance measurement device that can appropriately detect a distance to an object regardless of the distance. The distance measurement device includes a laser light source, a photodetector, and a controller. The controller performs a long-distance routine that detects timing for receiving light when an object is at a long distance, and a short-distance routine that detects the timing for receiving light when the object is at a short distance, based on a detection signal output from the photodetector during one distance measurement operation. The controller then selects one of a detection result of the timing for receiving light by the long-distance routine and a detection result of the timing for receiving light by the short-distance routine, and calculates the distance to the object irradiated with projection light based on the selected detection result.