Optical imaging anti-fake element

Abstract

The invention discloses an optical imaging anti-fake element. The optical imaging anti-fake element comprises a base material, wherein the base material is provided with a first surface and a second surface which are opposite; a micro lens layer is arranged on the first surface; a miniature image-text layer is arranged on the second surface; and micro lens units of the micro lens layer or image-text units of the miniature image-text layer are arranged to form a unit full-plate pattern or a unit blank pattern. The optical imaging anti-fake element is reasonable in structure; the micro lens units of the micro lens layer or the image-text units of the miniature image-text layer are arranged to form the unit full-plate pattern or the unit blank pattern, so that the anti-fake element with a predetermined identifier is formed on the surface of the base material; and the anti-fake element has an anti-fake function, can be used as a packaging material, and has the identifier effect. The invention further discloses an application of the optical imaging anti-fake element.

Description

Technical field [0001] The invention relates to the field of optical imaging anti-counterfeiting technology, in particular to an optical imaging anti-counterfeiting element and its application. Background technique [0002] CN101563640, CN101443692, CN101120139, CN101346244, US5712731, US0034082, US4765656, US4892336, CN1271106, CN1552589 and other patent documents disclose the same type of anti-counterfeiting element with a microlens array and a micrograph array on both surfaces of the substrate, Among them, the micro-graphics array is located near the focal plane of the micro-lens array, and a pattern with a certain depth of field or a dynamic effect is reproduced by the moiré magnification effect of the micro-graphics array by the micro-lens array. [0003] At present, the use of moiré magnified patterns to achieve anti-counterfeiting effects is mostly used in high-security or high-value-added printed matter such as cards and cards, and has achieved very good results. However, ...

AI Technical Summary

Problems solved by technology

But because the required micro-text structure is very fine (about several microns), and the limit printing stroke of general printing technology is more than 20 microns, the micro-text array and the microlens array of card and banknote in the prior art are all full board distribution

The optical units distributed all over the board only meet the anti-counterfeiting requirements, and cannot form the pattern logo of the size and size on the conventional product packaging, so it cannot appear as a commodity packaging material, that is, it cannot have multiple functions of anti-counterfeiting and packaging

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