Anti-fake structure of optical readable bar code and realization method of anti-fake structure

Abstract

The invention provides an anti-fake structure of an optical readable bar code and a realization method of the anti-fake structure. The structure is composed of a bar code part and a photochromic area. The dimming area is arranged in at least one area around a bar code identification; and the dimming area is composed of a laser holographic film prepared via optical diffraction, or a dimming film prepared via optical interference, or a dimming image printed by OVI dimming printing ink prepared via optical interference, and a film formed by a micro lens array. With change of the reading angle, the dimming area is combined with an identification printing image to form different images that cannot be copied by a common scanner; a colored bar code can be embedded with different anti-fake and tracing information via optical readable dot matrix codes, the printing quality of images is not influenced, and anti-fake, copy-preventive and commodity back tracing functions of identification of a common mobile phone are realized via three types of anti-fake technologies; the problem that readable identifications can be copied by mobile phones internationally is solved, and the method is also characterized by being simple, practical and convenient to popularize.

Description

technical field [0001] The invention belongs to the field of information processing, in particular to an optically readable barcode anti-counterfeit structure and a method for realizing the optically readable barcode anti-counterfeit structure. Background technique [0002] In recent years, food safety issues have attracted more and more attention from the society and the government, and the phenomenon of counterfeit goods has not been effectively curbed. [0003] The social problem of eradicating counterfeit goods depends on the public to solve. For this reason, technology that supports the public to read authenticity has attracted much attention today. [0004] The traditional method of using the mark formed by the diffraction of light to realize the authenticity identification of the public has been widely used. Until 2012, American researchers also disclosed the "multi-viewpoint image recording medium and authenticity determination method" (Patent Document 1) in Japan. ...

AI Technical Summary

Problems solved by technology

As the vast majority of mobile phones have not imported MFC chips, the identification of RFID code content cannot be realized through mobile phones, so that it is difficult for mass mobile phones to identify the authenticity of goods, and the high cost of RFID has always hindered the popularization of this technology.

[0016] The above-mentioned patent document 4 proposes to use digital watermarking technology to realize the information hiding of the code, but the area of ​​the code is too large, and it will have a great impact on the image after being buried in the printed image. The image data is not suitable for mass production printing of logos

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