Optical sensor and image forming apparatus

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 photodet...

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Bibliographic Details
Main Authors OBA YOSHIHIRO, SUGAWARA SATORU, ISHII TOSHIHIRO, HOSHI FUMIKAZU
Format Patent
LanguageEnglish
Published 03.03.2015
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MAGNETOGRAPHY
MEASURING
PHOTOGRAPHY
PHYSICS
TESTING
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Summary: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.
Bibliography:Application Number: US201313768265