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. 27, 2015
Filed:
Feb. 14, 2013
Fumikazu Hoshi, Miyagi, JP;
Satoru Sugawara, Miyagi, JP;
Toshihiro Ishii, Miyagi, JP;
Yoshihiro Oba, Miyagi, JP;
Fumikazu Hoshi, Miyagi, JP;
Satoru Sugawara, Miyagi, JP;
Toshihiro Ishii, Miyagi, JP;
Yoshihiro Oba, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical sensor is disclosed, including an irradiating system; a first photodetecting system including a first photodetector which is arranged on an optical path of a light which is specularly reflected from a subject; a second photodetecting system including an optical element which is arranged on an optical path of a light which is diffuse reflected from the subject within an incident face in the subject and which separates a linearly polarized component in a second polarizing direction which is orthogonal to a first polarizing direction and a second photodetector which receives a light separated by the optical element; and a restricting member which is arranged on an optical path of an incident light with respect to at least one of the first photodetector and the second photodetector and which restricts a light receiving range in the at least one photodetector.