Image forming device
US-2015362870-A1 · Dec 17, 2015 · US
Optical sensor and image forming apparatus
US8942583B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8942583-B2 |
| Application number | US-201313766896-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 14, 2013 |
| Priority date | Feb 20, 2012 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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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.
First claim
Opening claim text (preview).
The invention claimed is: 1. An optical sensor, comprising: an irradiating system which irradiates, toward a surface of a subject, a linearly polarized light in a first polarization direction from an incident direction which is slanted relative to a normal direction of the surface; a first photodetecting system including a first photodetector which is arranged on an optical path of a light which is specularly reflected from the subject; a second photodetecting system including…
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Physics · mapped topic
Physics · mapped topic
- G03G15/5029Primary
Physics · mapped topic
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- What does patent US8942583B2 cover?
- 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 …
- Who is the assignee on this patent?
- Hoshi Fumikazu, Sugawara Satoru, Ishii Toshihiro, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G03G15/5029. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).