Optical anti-counterfeiting components and optical anti-counterfeiting products

Abstract

The invention relates to the field of optical anti-counterfeiting, and discloses an optical anti-counterfeiting element and an optical anti-counterfeiting product, wherein the optical anti-counterfeiting element includes: a base material, the base material includes a first surface and a second surface opposite to each other; a surface or the second surface and a sampling synthesis layer located in the first region of the substrate, the sampling synthesis layer is composed of one or more micro-sampling units; and formed on the first surface or the second A micro-image layer on the surface and located in the second area of ​​the substrate; wherein, when the first area and the second area are brought close to each other, the sampling synthesis layer can perform sampling synthesis on the micro-image layer , thereby forming a visual feature composed of one or more macroscopic composite images. The optical anti-counterfeiting element has the characteristics of being easy to identify and difficult to forge.

Description

technical field [0001] The invention relates to the field of optical anti-counterfeiting, in particular to an optical anti-counterfeiting element and an optical anti-counterfeiting product. Background technique [0002] In order to prevent counterfeiting by means of scanning and copying, optical anti-counterfeiting technology is widely used in various high-security or high-value-added printed materials such as banknotes, cards and product packaging, and has achieved very good results. [0003] Chinese patent with publication number CN1271106A and authorized announcement number CN1552589B, or Properties of Kamal H, Voelkel R, Alda J magnifiers[J].Optical Engineering,1998,37(11):3007-3014, Dong Xiaochun, Du Chunlei’s research on microlens array display technology[J].Micro-Nano Electronic Technology,2003,40(6):29-32 . and other documents all disclose micro-optical elements with micro-lens arrays and micro-text arrays on the two surfaces of the substrate respectively, and wher...

AI Technical Summary

Problems solved by technology

[0005] However, the above method has two problems: first, the formed optical anti-counterfeiting feature is single and fixed; second, the so-called set relative positional relationship or rotation angle relationship cannot It is usually impossible to achieve strictly unified parameters or errors may occur during the processing, so there is uncertainty in the actual optical anti-counterfeiting features.

These problems make the characteristics of optical anti-counterfeiting components single or the quality cannot be guaranteed

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