- 专利标题: Imaging device, medium type determining device, and image forming apparatus
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申请号: US14851383申请日: 2015-09-11
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公开(公告)号: US09654671B2公开(公告)日: 2017-05-16
- 发明人: Mamoru Yorimoto , Nobuyuki Satoh , Kenji Morita , Masaya Kawarada , Masahiro Hiranuma , Daisaku Horikawa
- 申请人: Mamoru Yorimoto , Nobuyuki Satoh , Kenji Morita , Masaya Kawarada , Masahiro Hiranuma , Daisaku Horikawa
- 申请人地址: JP Tokyo
- 专利权人: RICOH COMPANY, LTD.
- 当前专利权人: RICOH COMPANY, LTD.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2014-187746 20140916
- 主分类号: H04N1/00
- IPC分类号: H04N1/00 ; H04N1/60 ; H04N1/04 ; H04N1/028 ; G01J3/50
摘要:
An imaging device including a light source; a two-dimensional image sensor that receives reflected light from a subject containing specular light of the light source and outputs an image of the subject; a light transmission member disposed in an optical path of light emitted from the light source to the subject; and a light shielding unit that, when a position on the subject at which light from the light source is regularly reflected and enters the two-dimensional image sensor is defined as a first specular position, whereas a position on the light transmission member at which light from the light source is regularly reflected and enters the two-dimensional image sensor is defined as a second specular position, shields the light directed from the light source toward the second specular position without shielding the light directed from the light source toward the first specular position.