公开(公告)号：US20210018625A1

公开(公告)日：2021-01-21

申请号：US17061561

申请日：2020-10-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhisa Ide ,  Masaomi Inoue ,  Hirotaka Ueno ,  Kouichi KUMAMARU ,  Masahiro SHIIHARA ,  Kouichi BAIRIN ,  Takashi HARUGUCHI ,  Kiyoshi HIBINO

IPC: G01S17/10 ,  G01S7/481

Abstract: A distance measurement device includes: a mirror disposed so as to be tilted relative to a rotation center axis; a drive unit configured to rotate the mirror about the rotation center axis; a photodetector configured to detect reflected light, of laser light, reflected in a distance measurement region; and a condensing lens disposed on the rotation center axis and configured to condense the reflected light reflected by the mirror, on the photodetector. The mirror has a shape elongated in one direction and is disposed such that a short axis thereof is tilted relative to the rotation center axis in a direction parallel to a plane including the rotation center axis. A width in a short-axis direction of the mirror is smaller than a width of a lens portion of the condensing lens as viewed in a direction parallel to the rotation center axis.