The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 2020
Filed:
Jan. 11, 2017
Applicant:
Ricoh Company, Ltd., Tokyo, JP;
Inventors:
Yasuhiro Nihei, Kanagawa, JP;
Koji Masuda, Kanagawa, JP;
Takeshi Ogawa, Kanagawa, JP;
Hiroaki Tanaka, Tokyo, JP;
Shu Takahashi, Kanagawa, JP;
Masahiro Itoh, Kanagawa, JP;
Yoichi Ichikawa, Kanagawa, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 17/00 (2006.01); B60Q 11/00 (2006.01); H05B 45/00 (2020.01); H05B 47/105 (2020.01); G01S 7/481 (2006.01); G01S 7/484 (2006.01); G01S 7/497 (2006.01); G01S 17/10 (2020.01); G01S 17/931 (2020.01); G01S 17/89 (2020.01);
U.S. Cl.
CPC ...
B60Q 11/005 (2013.01); G01S 7/484 (2013.01); G01S 7/4815 (2013.01); G01S 7/497 (2013.01); G01S 17/10 (2013.01); H05B 45/00 (2020.01); H05B 47/105 (2020.01); G01S 17/89 (2013.01); G01S 17/931 (2020.01);
Abstract
A distance measurement device includes a projection optical system, a light-receiving system to receive light projected from projection optical system and reflected by an object; and a correction system to correct a difference in timing of light emission between the plurality of light sources. The projection optical system includes a plurality of light sources and a plurality of drive circuits to drive the plurality of light sources.