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False proof structure for driving license and its identifying method

A driver's license and microstructure technology, which can be used in information-carrying cards, patterns featuring light projection effects, decorative arts, etc., can solve the problems of high anti-counterfeiting cost, long detection time, etc. The effect of high craftsmanship

Active Publication Date: 2008-04-16
TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the authenticity of cards using chip technology needs to be identified by professionals with professional skills using professional testing instruments, which results in high anti-counterfeiting costs and long testing time.
The general-purpose certificates used in mobile occasions require staff to quickly identify the authenticity of the certificates in an ordinary working environment, and only using chip anti-counterfeiting technology obviously cannot meet the requirements

Method used

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  • False proof structure for driving license and its identifying method
  • False proof structure for driving license and its identifying method
  • False proof structure for driving license and its identifying method

Examples

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Embodiment 1

[0037] Embodiment 1: An anti-counterfeit structure for a driver's license. On the plastic film of the card body, a sub-wavelength structured grating microstructure constitutes a logo pattern, and the logo pattern includes at least three graphic areas. In the first graphic area Contains two kinds of graphics complementary, and the orientations of the microstructure structures are arranged orthogonally to each other, forming a double color-changing visual channel, and the areas of the two graphics do not overlap each other. See the square 22 and other parts 21 in the rhombus pattern of accompanying drawing 1, FIG. 2 is a schematic diagram of orientation in another orthogonal direction; the period of the microstructure is 300-450 nanometers, the depth of the groove is 80-150 nanometers, and the microstructure is filled with a transparent high-refractive index medium layer. The refractive index of the medium is greater than 1.8. The first graphic area is composed of a rhombus and ...

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PUM

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Abstract

The invention discloses an anti-counterfeiting structure for driving card. The marked pattern composed of microstructure is set on the plastic packaged film of the card. The said marked pattern comprises at least three pattern area. A first pattern area is composed of sub-wavelength structure raster of orientated orthogonal structure and the double vision channel forms single color effect. A second pattern area is composed of light spot with body shape of square. The light spot shape of the pattern edge is determined by the outer outline of the pattern, with gliding property. The interference fringes are set in the light point. A third pattern area is composed of bar speckle microstructure, with oriented achromatization effect for white light reflection. The vision character of pattern is notable, easy to recognize in public places and conveniently and quickly distinguish the card. At the same time, the structure data is computed using rigid coupled wave. The said microstructure is produced using electron beam or laser interference optical lithography, and the means is advanced and the difficulty of technique is high with high safety.

Description

technical field [0001] The invention relates to the anti-counterfeiting technology of driver's license plastic sealing film and the field of public safety, in particular to an anti-counterfeiting for driver's license realized by using an image composed of ultrafine structures, which has the visual recognition effect of graphic and color conversion, and is applicable to public visual recognition , especially suitable for national statutory certificates or card anti-counterfeiting security. Background technique [0002] Physical visual reading anti-counterfeiting technology is an important anti-counterfeiting means, especially optical visual reading recognition graphics, which are highly valued by research institutions and application units due to their characteristics of easy visual reading, high technical content, difficult manufacturing, and high imitation cost. . In the legal documents, cards, banknotes and branded goods of various countries in the world, the optical read...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B44F1/12B42D15/00B42D25/30
Inventor 虞力英孙正良尚炜陈林森
Owner TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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