Optical security element and optical security product

Abstract

The invention relates to the field of optical security, and discloses an optical security element and an optical security product. The optical security element comprises base material, a sampling synthesis layer and a micro-image layer, wherein the base material comprises a first surface and a second surface which are opposite to each other, the sampling synthesis layer is formed on the first surface or the second surface and located in a first region of the base material, the sampling synthesis layer is composed of one or more micro-sampling units, the micro-image layer is formed on the firstsurface or the second surface and located in a second region of the base material, when the first region and the second region are close to each other, the sampling synthesis layer can perform sampling synthesis on the micro-image layer, so as to form visual features formed by one or more macroscopic synthetic images. The optical security element has the characteristics of being easy to identifyand difficult to counterfeit.

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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