公开(公告)号：US20210141062A1

公开(公告)日：2021-05-13

申请号：US17153823

申请日：2021-01-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kiyoshi Hibino ,  Takashi HARUGUCHI ,  Masaomi INOUE ,  Kazuhisa IDE ,  Masahiro SHIIHARA ,  Kouichi BAIRIN ,  Kouichi KUMAMARU ,  Hirotaka UENO ,  Hideo YAMAGUCHI

IPC: G01S7/481 ,  G02B26/10 ,  G02B26/08

Abstract: A distance measurement device for measuring a distance to an object that exists in a distance measurement region includes: a light source configured to emit laser light; a lens configured to converge the laser light emitted from the light source, into substantially parallel light; a tubular light blocking member disposed on an optical path of the laser light emitted from the light source and surrounding the optical path; a photodetector configured to detect reflected light, of the laser light, reflected at the distance measurement region; and a condensing lens configured to condense the reflected light passing through the outside of the light blocking member, onto the photodetector.