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Image reading device

An image reading device and optical image technology, applied in the field of image sensors, can solve the problems of energy waste, reduced reading accuracy, low light utilization rate, etc., to increase light intensity, improve reading accuracy, and improve work reliability sexual effect

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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an image reading device to solve the problem that the image reading device in the prior art has a low utilization rate of the light emitted by its light source structure, which not only causes waste of energy, but also reduces the image quality. Problems with the reading accuracy of the light image of the original by the reading device

Method used

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Experimental program
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Embodiment 1

[0062] Such as figure 1 As shown, the image reading device in this embodiment is a transmissive image reading device, and the frame body 10 includes a first frame body 11 and a second frame body 12, and the first frame body 11 and the second frame body 12 are arranged opposite to each other. To form a shelving space for shelving the original 100 between the two, wherein the light source structure 20 and the light collecting part 30 are arranged in the first frame body 11, the image reading device also includes a lens 40 and a photosensitive chip 50, the lens 40 and the photosensitive chip 50 are sequentially arranged in the second frame body 12 along the propagation path of the light.

[0063] In this way, the light beam emitted by the light source structure 20 is converged by the light-collecting part 30, and then emitted to the original 100, part of the light passes through the original 100, and the lens 40 collects the transmitted light through the original 100, and irradia...

Embodiment 2

[0074] Such as figure 2 As shown, the image reading device in this embodiment is a reflective image reading device, the image reading device also includes a lens 40 and a photosensitive chip 50, the lens 40 and the photosensitive chip 50 are arranged in the frame body 10, the light source structure 20 and There are two light concentrating parts 30 , and the two light source structures 20 and the two light concentrating parts 30 are provided in one-to-one correspondence, and are respectively located on both sides of the lens 40 .

[0075] In this way, the light emitted by the light source structure 20 is condensed by the light-collecting part 30, and then emitted to the original 100. The light is reflected on the surface of the original 100, and the lens 40 collects the reflected light reflected by the surface of the original 100, and irradiates the reflected light on the On the photosensitive chip 50 , the photosensitive chip 50 is used to analyze the reflected light to obtai...

Embodiment 3

[0079] Such as image 3 As shown, the image reading device provided in this embodiment can not only collect the reflected light of the original document, but also collect the transmitted light through the original document; image 3 As shown, the frame body 10 includes a first frame body 11 and a second frame body 12, and the first frame body 11 and the second frame body 12 are arranged oppositely to form a shelving space for shelving the original document 100 between the two, and the light source The structure 20 includes a transmission light source structure 24 and a reflection light source structure 25, wherein the transmission light source structure 24 is arranged in the first frame body 11, and the reflection light source structure 25 is arranged in the second frame body 12, and the image reading device further includes a lens 40 and The photosensitive chip 50 , the lens 40 and the photosensitive chip 50 are sequentially arranged in the second frame body 12 along the prop...

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Abstract

The invention provides an image reading device. The image reading device is used for reading a light image on an original and comprises a frame, a light source structure and a light gathering part; the light source structure is arranged on the frame and used for emitting light rays to the original; and the light gathering part and the light source structure are arranged face to face, and the lightgathering part is located on a propagating path of the light rays emitted by the light source structure and used for gathering light beams penetrating through the light gathering part to increase thenumber of the light rays reaching the light image of the original. According to the image reading device, the problems that the utilization rate of an image reading device in the prior art for lightrays emitted by the light source structure is low, and therefore not only is energy waste caused, but also the reading accuracy of the image reading device for the light image of the original is reduced are solved.

Description

technical field [0001] The present invention relates to the technical field of image sensors, in particular to an image reading device. Background technique [0002] Existing image reading devices usually use the light source structure to emit light to the original. After the light emitted by the light source structure reaches the original, it passes through the original or is reflected on the surface of the original. Then, the image reading device collects and analyzes the light transmitted through the original. Light or reflected light reflected off the surface of the original to read the light image on the original. [0003] The image reading device reads the optical image of the original in the reading area. When the light emitted by the light source structure of the existing image reading device reaches the original, only part of the light is located in the reading area, while the rest of the light is irradiated to the original. Outside the reading area, part of the li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/028
CPCH04N1/02895
Inventor 王虎岩于超王凤秀王家重曹慧俐
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