Invention Grant
- Patent Title: Image scanning device and illuminating device that divide a light beam from a light source into multiple light beams and direct the multiple light beams to a target
- Patent Title (中): 将来自光源的光束分成多个光束并将多个光束引导到目标的图像扫描装置和照明装置
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Application No.: US11886578Application Date: 2006-03-20
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Publication No.: US08169672B2Publication Date: 2012-05-01
- Inventor: Satoshi Yamauchi , Fumihiro Nakashige
- Applicant: Satoshi Yamauchi , Fumihiro Nakashige
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Dickstein Shapiro LLP
- Priority: JP2005-080772 20050318; JP2006-075711 20060317
- International Application: PCT/JP2006/305504 WO 20060320
- International Announcement: WO2006/098468 WO 20060921
- Main IPC: H04N1/04
- IPC: H04N1/04
Abstract:
A disclosed image scanning device illuminates a document with a light source, focuses light reflected from the document on an image sensor to obtain one-dimensional images of the document, and obtains a two-dimensional image of the document from the one-dimensional images. The device includes an illumination lens for dividing a light beam emitted from the light source into multiple light beams and a combining unit for combining the multiple light beams on the document. A disclosed image scanning method includes the steps of illuminating a document with a light source; focusing light reflected from the document on an image sensor to obtain one-dimensional images of the document; and obtaining a two-dimensional image of the document from the one-dimensional images. In this method, a light beam from the light source is divided into multiple light beams and the multiple light beams are combined on the document. A disclosed image forming apparatus includes the image scanning device.
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