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:
Jan. 13, 2015
Filed:
Jun. 26, 2012
Masafumi Hashiguchi, Yokohama, JP;
Toshio Yanata, Ebina, JP;
Masahiko Sato, Sagamihara, JP;
Masataka Akaishi, Ebina, JP;
Sohichiroh Naka, Zama, JP;
Masafumi Hashiguchi, Yokohama, JP;
Toshio Yanata, Ebina, JP;
Masahiko Sato, Sagamihara, JP;
Masataka Akaishi, Ebina, JP;
Sohichiroh Naka, Zama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical sensor unit includes: a light-emitting device; a light-receiving device that receives light which is emitted from the light-emitting device and reflected from an object to be detected, and outputs an output value in accordance with the light; a shutter member that openably and closably covers an incident/exit plane having an exit part where light of the light-emitting device is emitted to the object to be detected and an incident part where light reflected from the object to be detected enters, and has a facing surface facing the incident/exit plane that is an inclined surface inclined to the incident/exit plane; and a corrector that corrects an output value of the light-receiving device when receiving light reflected from the object to be detected, based on an output value of the light-receiving device obtained by emitting light to the inclined surface of the shutter member.