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Image scanner

An image reading device and image technology, which are applied in image communication, electrical recording technology applying charge patterns, equipment for electrical recording technology applying charge patterns, etc. body distance, miniaturization, and the effect of increasing depth of field

Active Publication Date: 2013-04-03
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Conventional method 1 has the advantage of having a large depth of field as described above, but has the problem of increasing the size of the optical system

Method used

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Examples

Experimental program
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Effect test

Embodiment approach 1

[0084] Next, use Figure 1 ~ Figure 3 An example of the image reading device according to Embodiment 1 of the present invention will be described.

[0085] The image reading device 501 according to the present embodiment includes an imaging optical system 1 , a light source 2 , imaging element units 41 , 42 , . Regarding these structural parts, the light source 2 is arranged near the original 7 as an example of the object to be read as an image, and the imaging optical system 1 is arranged so that the light reflected by the original 7 can be incident. The imaging device section 41 and the like are arranged. Such an image reading device 501 reads the image of the original document 7 along the main scanning direction (X direction) 211, and also scans the original document 7 in the sub scanning direction (Y direction) 212 perpendicular to the main scanning direction 211, and reads the original document. All images in 7. In addition, the manuscript 7 refers to an object to be r...

Embodiment approach 2

[0136] refer to Figure 9 ~ Figure 12 An example of the image reading device 502 in Embodiment 2 of the present invention will be described.

[0137] In the image reading device 501 according to Embodiment 1, the slave originals among the chief rays in the cells 11, 13, . . . belonging to the first row 215 and in the cells 12, 14, . 7 The rays towards the units 11, 13, ... and the units 12, 14, ... are as figure 2 are shown parallel to each other, and between cells 11, 13, ... and cells 12, 14, ... in the first column 215 and the second column 216, as image 3 The rays directed from the document 7 to the individual units within the shown chief rays are also parallel. In addition, in an example of the present embodiment, since the optical axis is a straight line, words such as light rays from the original document 7 toward each unit among the chief rays can be replaced with words such as the optical axis.

[0138] In contrast, image reading device 502 in Embodiment 2 has a ...

Embodiment approach 3

[0146] refer to Figure 13 An example of the image reading device 503 in Embodiment 3 of the present invention will be described.

[0147] In the first and second embodiments described above, the light rays 11 a , 12 a , . Alternatively, the units 11, 12, . . . are arranged in a slightly inclined manner. On the other hand, in the image reading device 503 according to Embodiment 3, each light ray behind the bending mirror 111 , 112 among the chief ray of each unit 11 , 12 , . . . In a parallel manner, the units 11, 12, . . . are arranged.

[0148] That is, in the image reading device 503 in the third embodiment, scattered light from the original document 7 that is incident on the units 11, 12, ... is provided between the original document 7 and the units 11, 12, ... The optical path is bent by bending mirrors 111, 112. In this embodiment, the first bending mirror 111 is provided corresponding to the optical axes 11a, 13a, . . . of the units 11, 13, . . . The optical axes 1...

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Abstract

An image reading apparatus includes a light source (2), an imaging optics system (1), an image pickup device unit (41; 42,..), a memory (5), and a processor (6). The imaging optics system is an optics system for condensing scattered light reflected on an object to be imaged to form such condensed light as an image. The imaging optics system has a plurality of cells (11, 12,..) and the like which are arranged in a main scanning direction (211) and each of which is an independent imaging optics system. Each of the cells (11, 12,..) has a telecentric optics system at the side of the document. Two rows of cells are arranged in a sub-scanning direction (212). The cells (11, 12,..) in the rows are arranged zigzag in the main scanning direction so as to be able to complement a formed image by the cells in the sub-scanning direction (212). The image pickup device unit (41, 42,..) is arranged to correspond to each cell. The processor (6) can form a document image by reconstructing and combining image information stored in the memory (5) into an image.

Description

technical field [0001] The present invention relates to an image reading device used in copiers and the like. Background technique [0002] There are roughly two types of image reading devices used in copiers, scanners, facsimile machines, etc., which scan the image at the reading position using a one-dimensional imaging element to read the entire image . In addition, generally, the direction in which the one-dimensional imaging elements are arranged is called the main scanning direction, and the direction in which scanning is performed is called the sub-scanning direction. [0003] One of the two methods is a method in which the entire image in the main scanning direction is reduced and transferred to the imaging element through a single-eye lens, and is mainly used for surface reading in copiers. In this method, the imaging element and the lens normally located on the document side are fixed, and only a mirror (mirror) moves in the sub-scanning direction to scan the enti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/19G03G15/04H04N1/028
CPCH04N1/19584H04N1/0306H04N1/19515H04N1/19589H04N2201/0434H04N1/195H04N1/0312H04N1/1903
Inventor 河野裕之冈本达树美浓部正国枝达也藤内亚纪子
Owner MITSUBISHI ELECTRIC CORP
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