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Patent Searching and Data


Title:
IMAGE READING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/193945
Kind Code:
A1
Abstract:
This image reading device is provided with: a lens array (4), in which lens bodies (41) of an upright equal magnification optical system for causing light, from an object to be read out, to converge are arranged along a main scanning direction; a holding part for holding the lens array (4); a light reception part (7) for receiving the light converged by the lens bodies (41); and in a space between the lens array 4 and the light reception unit (7), slit units (6) comprising light shielding plates (14) that separate a light path between one lens body (41) and another lens body (41) and comprising side plates (15) that connect adjacent light shielding plates (14) and are provided at both sides thereof in a direction crossing the main scanning direction of the light shielding plates (14), wherein three or more adjacent light shielding plates (14) are connected by the side plates (15). The present invention is characterized in that a plurality of the slit units (6) are arranged along the main scanning direction, and that adjacent slit units (6) are arranged such that one optical path length of the lens body (41) is kept empty therebetween.

Inventors:
SAWABE TOSHIYUKI (JP)
YAMAGATA KOSAKU (JP)
ARIMOTO HIRONOBU (JP)
YOSHIOKA SADAAKI (JP)
MAEKAWA TAKASHI (JP)
Application Number:
PCT/JP2021/012971
Publication Date:
September 30, 2021
Filing Date:
March 26, 2021
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G02B3/00; G02B13/24; H04N1/028
Foreign References:
JP2012217128A2012-11-08
JP2011043643A2011-03-03
JP2003163938A2003-06-06
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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