Touch-type image sensor

An image sensor, contact technology, used in instruments, character and pattern recognition, computer parts and other directions, can solve the problems of low resolution, serious defocus, inability to effectively read high-precision color images, etc., to improve the resolution. rate, the effect of improving the defocus phenomenon

Inactive Publication Date: 2002-04-10
WEIHAI HUALING OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0003] The technical problem solved by the present invention is that, in the multi-color light source, the common length of each color light source is different, and the defocus is serious, especially the infrared light common length is longer, the defocus is more serious, the resolution is low, and the original information cannot be effectively read, especially Effectively read high-precision color images

Method used

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Embodiment approach

[0008] From figure 1 It can be seen from the figure that a glass plate 5 is provided above the frame body 6, a light source 1 is provided below the glass plate 5, a lens 2 is provided in the middle of the frame body 6, a substrate 4 is provided below the frame body 6, and a sensor 3 is provided on the substrate 4. A socket 7 is arranged on one side of the frame body 6, and an infrared shading layer 10 is arranged on the glass plate 5, and the infrared shading layer 10 is an infrared shading film, or an infrared shading paint. When working, the polychromatic light emitted from the light source 1 passes through the glass plate 5 and reaches the original 8, the black text absorbs the light, and the background color of the white original 8 passes through the glass plate 5, and after being focused by the lens 2, it reaches the sensor 3, and the sensor 3 converts the light The signal is converted into an electrical signal as image information and output by the socket 7, and the rota...

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Abstract

A touch-type image sensor for the fax machine, scanner and paper money recognizer is composed of a frame body with socket, glass plate with infrared shielding layer on the frame body, light source under glass plate, lens in the center of the frame body, a base plate under the frame body and sensor on the base plate. Its advantages are reducing misfocus and increasing resolution by more than 2 times.

Description

a technical field [0001] The invention relates to an image reading device, specifically a contact image sensor, which is suitable for image recognition devices such as facsimile machines, scanners, banknote recognition machines and the like. Two background technology [0002] We know that the contact image sensors used in image recognition devices such as fax machines, scanners, banknote recognition machines, etc., are provided with a glass plate above the frame, a light source is provided below the glass plate, and a lens is provided in the middle of the frame. , there is a base plate under the frame, a sensor is set on the base plate, and a socket is set on one side of the frame. When working, the multicolored light from the light source reaches the original through the glass plate. The black text absorbs light, and the white original base color is transparent After passing through the glass plate and focusing on the lens, it reaches the sensor. The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G06K9/24
Inventor 远藤孝文王翥
Owner WEIHAI HUALING OPTO ELECTRONICS CO LTD
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