An optical anti-counterfeit element and an anti-counterfeit product using the optical anti-counterfeit element

Abstract

The present invention aims at the defects of the existing optical anti-counterfeiting technology such as simple color change feature, narrow design space and single anti-counterfeiting feature, and provides an optical anti-counterfeiting element which can overcome the defects, which includes a color functional layer, and has a first surface and a second surface opposite to each other. The substrate of the surface and the surface relief structure layer that modulates the direction of incident light and light from the color functional layer, wherein the arrangement of the substrate, the surface relief structure layer and the color functional layer is one of the following: the first surface At least partially covered with a surface relief structure layer, the second surface is at least partially covered with a color functional layer; or the first surface is at least partially covered with a color functional layer, and the surface of the color functional layer is at least partially covered Covered with a surface relief structure layer; or both the first surface and the second surface are at least partially covered with a color function layer, and the surface of the color function layer on the first surface is at least partially covered with a surface relief structure layer .

Description

technical field [0001] The invention relates to the field of optical anti-counterfeiting, in particular to an optical anti-counterfeiting element and an anti-counterfeiting product using the optical anti-counterfeiting element. Background technique [0002] Optically variable coating technology is widely used in the public anti-counterfeiting of high anti-counterfeiting securities such as banknotes. It can present different colors under different viewing angles, which is easy to describe and easy for the public to identify, and it cannot use electronic devices such as cameras, scanners, and printers. The equipment is imitated or copied, so it has a high anti-counterfeiting ability. [0003] However, since optical variable products have been used for decades, pure optical variable coating technology can no longer meet the needs of the anti-counterfeiting field. The optically variable coating has been combined with technologies such as hollowing out, holography, and optically...

AI Technical Summary

Problems solved by technology

[0007] The above optical variable technologies and the optical anti-counterfeiting elements formed by these optical variable technologies are due to their own technical characteristics, component structures, and defects in the manufacturing process, so that the colors they can form are dark, the anti-counterfeiting features are single, and the design space is narrow. Its anti-counterfeiting ability

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