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An anti-counterfeiting element combining optical encryption and digital encryption and its manufacturing method

A technology of an anti-counterfeiting element and a manufacturing method, which is applied in the field of information encryption and can solve the problems such as the simplification of the development of optical encryption technology.

Active Publication Date: 2021-09-10
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Optical encryption technology has opened a new door for research in the field of identity verification and anti-counterfeiting, but as a new encryption method, optical encryption technology still faces the dilemma of single-minded technology development

Method used

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  • An anti-counterfeiting element combining optical encryption and digital encryption and its manufacturing method
  • An anti-counterfeiting element combining optical encryption and digital encryption and its manufacturing method
  • An anti-counterfeiting element combining optical encryption and digital encryption and its manufacturing method

Examples

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Embodiment 1

[0039] Embodiment 1 An anti-counterfeit element combining optical encryption and digital encryption

[0040] This example Figure 1-Figure 3 As shown, it is an anti-counterfeit element combining optical encryption and digital encryption, including a pattern body. The pattern body is a concave-convex line with a two-dimensional grating structure that is transferred on the surface of the film after the solid pattern is rasterized.

[0041] Such as figure 1 As shown, in order to better demonstrate the encryption effect, in this embodiment, the physical patterns are two two-dimensional codes containing digital information and encoded by digital encryption. One of the two-dimensional codes has a larger area, and a smaller two-dimensional code is nested inside the larger two-dimensional code. The smaller two-dimensional code is in the middle of the larger two-dimensional code. The number of code elements of a large QR code is considered an error code, so the maximum space occupie...

Embodiment 2

[0043] Embodiment 2 Anti-counterfeit element combining optical encryption and digital encryption

[0044] This example Figure 4-Figure 5 As shown, it is an anti-counterfeit element combining optical encryption and digital encryption, including a pattern body. The pattern body is a concave-convex line with a two-dimensional grating structure that is transferred on the surface of the film after the solid pattern is rasterized.

[0045] Such as Figure 4 As shown, in this embodiment, the physical pattern is a two-dimensional code that contains digital information and is encoded by digital encryption. The solid pattern is rasterized, and the processed solid pattern is as follows Figure 5As shown, it is a grating line along the vertical direction with a line width of 2um and a period of 4um. Then transfer it to the surface of the photosensitive polyamic acid film to obtain a pattern body with a width of 2um for both concave lines and convex lines, that is, a period of 4um.

Embodiment 3

[0046] Embodiment 3 Anti-counterfeit element combining optical encryption and digital encryption

[0047] This example Figure 6-Figure 8 As shown, it is an anti-counterfeit element combining optical encryption and digital encryption, including a pattern body. The pattern body is a concave-convex line with a two-dimensional grating structure that is transferred on the surface of the film after the solid pattern is rasterized.

[0048] Such as Figure 6 As shown, in this embodiment, the physical patterns are two two-dimensional codes with the same area that contain digital information and are encoded by digital encryption. Two QR codes are expressed in the form of superimposition.

[0049] The solid pattern is rasterized, and the processed solid pattern is as follows Figure 7 As shown, it is a grating line with a line width of 1um and a period of 2um. And the lines of the two-dimensional code of the lower layer are along the vertical direction, and the lines of the two-di...

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Abstract

The invention discloses a pattern combining optical encryption and digital encryption, which includes a pattern body, the pattern body is a line with a two-dimensional grating structure transferred on the surface of a film after a solid pattern is rasterized; the solid pattern Contains at least one barcode or QR code that contains digital information and is encoded by digital encryption. The invention also discloses a method for making a pattern combining optical encryption and digital encryption, which includes the following steps in sequence: encoding digital information to generate a physical pattern containing a barcode or a two-dimensional code; Perform rasterization processing; transfer the rasterized solid pattern to the surface of the film. The pattern of the present invention combines optical encryption with digital encryption, which improves the security level of encrypted information and the imitation threshold, and is convenient for interpretation and identification by consumers. The production method of the present invention is applicable to all barcodes or two-dimensional codes.

Description

technical field [0001] The invention belongs to the field of information encryption, in particular to an anti-counterfeit element combining optical encryption and digital encryption and a manufacturing method thereof. Background technique [0002] Patterns containing digital information can accommodate a large amount of encrypted information in a small size, among which barcodes and two-dimensional codes are currently the most common encrypted patterns containing digital information in China. However, such encrypted patterns are often directly printed on the outer packaging of the product. Although it is convenient to read, it also faces the risk of being easily copied and tampered with. [0003] Optical encryption technology has opened a new door for research in the field of identity verification and anti-counterfeiting, but as a new encryption method, optical encryption technology still faces the dilemma of single technology development. How to combine optical encryption ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B42D25/30G06K19/06B41M3/14B41M5/00
CPCB41M3/14B41M5/0064B41M2205/10B41M2205/40B42D25/30G06K19/06028G06K19/06037G06K2019/06253
Inventor 陈旭东钟世龙洪炜
Owner SUN YAT SEN UNIV