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Contact image sensor

An image sensor and contact technology, applied in image communication, instruments, optics, etc., can solve problems such as inability to read, and achieve high-precision reading

Inactive Publication Date: 2004-04-14
SHANDONG HUALING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the technical deficiency that the existing contact image sensor cannot read color originals and special originals coated with fluorescent materials, the purpose of the present invention is to provide a contact image sensor that is both Can read color originals and special originals coated with fluorescent materials, and the reading resolution does not deteriorate, enabling high-precision reading

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 As shown, in the above-mentioned contact image sensor, the light emitted by the light source (1) passes through the glass plate (5) and irradiates the image information (text) on the original (8), and the light is absorbed in the black area of ​​the text , while in the other white ground color areas of the original, almost 100% of the light is reflected, and these reflected lights pass through the glass plate (5), are collected by the lens (2), and irradiate the photosensitive integrated circuit ( 3) The photosensitive area. The photosensitive integrated circuit (3) is composed of many photosensitive areas and a drive circuit capable of photoelectrically converting the light irradiated on each photosensitive area and outputting signals. The received light is converted into telecommunication and output through the drive circuit as image information, and finally output from the socket (7), the original (8) is driven, and the image information (text) rec...

Embodiment 2

[0021] Such as figure 2 As shown, in this embodiment, two colors of ultraviolet light and other single visible light are used in the compound multicolor light source (1). Wherein (1a) is a light source capable of emitting ultraviolet light, which is composed of ultraviolet light emitting diodes arranged in a linear array. (1b) is a common monochromatic light source in the form of a diode array. In addition, (1b) can also be equipped with light-emitting diodes of multiple colors to form a multi-color visible light source.

Embodiment 3

[0023] Such as image 3 As shown, in this embodiment, two colors of ultraviolet light and other single visible light are used in the compound multicolor light source (1). (1a) is a light source capable of emitting ultraviolet light, (1b) is a common visible light source, and (1a) and (1b) are array-shaped composite light sources composed of light-emitting diodes mounted together. In addition, (1b) can also be equipped with light-emitting diodes of multiple colors to form a multi-color visible light source.

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PUM

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Abstract

Existing contact type image sensor has difficult to recognize some information such as following manuscripts: containing special material, paper money, especially containing luminescent material. In said cases, resolution and precision of read image are deteriorated. In the invented sensor, light source is in upper part of the frame body, lens is in middle part, and base plate of sensor is in lower part. The sensitive part is on the base plate of sensor. The said light source can emit ultraviolet light at least. Visible light can pass through the said lens, but ultraviolet light is shielded.

Description

Technical field [0001] The invention relates to an image reading device, in particular to a contact image sensor. Background technique [0002] Figure 6 It is a sectional view of a conventional contact image sensor disclosed in Japanese Patent Application Laid-Open No. 10-126581. In the figure, 1b is a light source, 2 is a lens, 3 is a photosensitive part (photosensitive integrated circuit) that receives light collected by the lens 2, 4 is a sensor substrate equipped with photosensitive integrated circuits 3 arranged in a line, 5 is a glass plate, 6 is a A frame for accommodating the light source 1b, the lens 2, the sensor substrate 4, and the glass plate 5, 7 is a socket for image information, power supply, and other input and output signals, and 8 is a document. [0003] In the above-mentioned contact image sensor, the light emitted by the light source 1 passes through the glass plate 5 and irradiates the image information (text) on the original 8, and the light is absor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00H04N1/028H04N1/04
Inventor 戚务昌细川信一朗
Owner SHANDONG HUALING ELECTRONICS