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Image detection device

An image detection device and an image technology, which are applied in the field of image sensing and recognition, can solve problems such as inability to identify objects to be detected, and achieve the effect of accurate and effective identification.

Active Publication Date: 2014-06-04
WEIHAI HUALING OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide an image detection device to solve the problem that the image detection device in the prior art cannot accurately, clearly and effectively identify objects to be detected containing birefringent materials

Method used

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no. 1 example

[0027] see in conjunction figure 1 As shown, according to the first embodiment of the present invention, the first polarizing film 40 of the image detection device is pasted on the transmitted light emitting surface of the area array transmission light source 20, and the size and shape of the first polarizing film 40 are consistent with the area array transmission light source 20. The light sources 20 are identical in size and shape. The second polarizing film 50 is attached on the lens of the CCD camera 30 and has the same size and shape as the lens of the CCD camera 30 . Preferably, an auxiliary light source 60 may also be provided around the lens of the CCD camera 30 .

[0028] In order to have a more accurate and clear identification effect on the information contained in the birefringent material in the object to be detected, the included angle between the polarization axis of the first polarizing film 40 and the polarization axis of the second polarizing film 50 can be ...

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PUM

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Abstract

The invention provides an image detection device. The image detection device comprises a mounting frame (10), an area array transmission light source (20), a CCD camera (30), a first polarizing cinema (40) and a second polarizing cinema (50), wherein the area array transmission light source (20) is arranged on the mounting frame (10) and gives out transmission light to an object to be detected, the CCD camera (30) is arranged on the mounting frame (10), a lens faces the area array transmission light source (20), the first polarizing cinema (40) is arranged on the transmission light incident side of the object to be detected, the second polarizing cinema (50) is arranged on the transmission light shooting out side of the object to be detected, and the transmission light penetrates through the first polarizing cinema (40) and the second polarizing cinema (50) and then transmits an image of the object to be detected to the CCD camera (30). According to the image detection device, the problem that in the prior art, an image detecting device cannot accurately, clearly and effectively identify objects which are to be detected and contain birefringence materials is solved.

Description

technical field [0001] The present invention relates to the technical field of image sensing and recognition, in particular to an image detection device. Background technique [0002] At present, the combination of transmitted light source and CCD camera is used to identify counterfeit money, and the situation of identifying bills is becoming more and more common. In the market, in order to improve the orientation ability of coins and bills, birefringent materials are increasingly used as anti-counterfeiting marks to enter the financial field. Due to structural limitations, the traditional combined device of transmitted light source and CCD camera cannot identify the information contained in the birefringent material in the polymer bill, so it cannot quickly and effectively identify the coins and bills to be detected, and The images and results of the identification are often unclear or inaccurate due to the incomplete reading of the information, resulting in a low ability ...

Claims

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Application Information

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IPC IPC(8): G07D7/20
Inventor 张文波戴朋飞
Owner WEIHAI HUALING OPTO ELECTRONICS CO LTD