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:
Jul. 02, 2013
Filed:
Jun. 27, 2012
Norifumi Yamamoto, Yokohama, JP;
Masahiko Sato, Sagamihara, JP;
Toshio Yanata, Ebina, JP;
Masafumi Hashiguchi, Yokohama, JP;
Masataka Akaishi, Ebina, JP;
Sohichiroh Naka, Zama, JP;
Norifumi Yamamoto, Yokohama, JP;
Masahiko Sato, Sagamihara, JP;
Toshio Yanata, Ebina, JP;
Masafumi Hashiguchi, Yokohama, JP;
Masataka Akaishi, Ebina, JP;
Sohichiroh Naka, Zama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A reflective photosensor detects a target object. The photosensor includes a transparent circuit board, a light emitter and a light receiver on one surface of the circuit board, including a light emitting element and a light receiving element, respectively, and disposed so that the light emitting element and the light receiving element face the one surface, a concave portion on the other surface of the circuit board, including a first refractive face to oppose the light emitting element and refract light from the light emitting element to the light receiving element and a second refractive face to oppose the light receiving element and refract, to the light receiver, a component of the light refracted by the first refractive face and specularly reflected by the target object.