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. 03, 2015
Filed:
Feb. 15, 2013
Yoshihiro Oba, Miyagi, JP;
Satoru Sugawara, Miyagi, JP;
Toshihiro Ishii, Miyagi, JP;
Fumikazu Hoshi, Miyagi, JP;
Yoshihiro Oba, Miyagi, JP;
Satoru Sugawara, Miyagi, JP;
Toshihiro Ishii, Miyagi, JP;
Fumikazu Hoshi, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical sensor is disclosed. The optical sensor includes an irradiating system which irradiates a linearly polarized light; 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, wherein an angle of taking in the light in the first photodetector and an angle of taking in the light in the second photodetector are mutually different.