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Optical anti-counterfeit element and manufacturing method thereof

An optical anti-counterfeiting and component technology, applied in the field of optical anti-counterfeiting, can solve problems such as restricting the application of high-end anti-counterfeiting optical products

Active Publication Date: 2019-06-18
ZHONGCHAO SPECIAL SECURITY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the accuracy of the partially hollowed out area in this patent application depends on the printing accuracy, and the printing accuracy is generally above 100um, which limits the application in high-end anti-counterfeiting optical products to a certain extent

Method used

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  • Optical anti-counterfeit element and manufacturing method thereof
  • Optical anti-counterfeit element and manufacturing method thereof
  • Optical anti-counterfeit element and manufacturing method thereof

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Embodiment Construction

[0017] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0018] In the present invention, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

[0019] figure 1 is a cross-sectional view of an exemplary optical security element according to the present invention. like figure 1 As shown, the optical anti-counterfeiting element may include: a substrate 1; a rel...

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Abstract

The embodiment of the invention provides an optical anti-counterfeit element and a manufacturing method thereof, and belongs to the field of optical counterfeit prevention. The optical anti-counterfeit element comprises a base material, a fluctuation structure layer located on the base material, a reflection layer, a medium layer and an absorption layer. The fluctuation structure layer at least comprises a first area composed of a first microstructure and a second area composed of a second microstructure, wherein the depth-to-width ratio of the first microstructure is smaller than that of thesecond microstructure. The reflection layer is only located on the first area. The medium layer is located above the reflection layer and at least covers a first sub area of the first area. The absorption layer is located above the medium layer, only covers the first sub area of the first area but does not cover a second sub area of the first area. By means of the optical anti-counterfeit elementand the manufacturing method thereof, the anti-counterfeit degree of optical anti-counterfeit products can be greatly improved.

Description

technical field [0001] The invention relates to the field of optical anti-counterfeiting, in particular to an optical anti-counterfeiting element and a manufacturing method thereof. 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, credit cards, passports, securities and product packaging, and has achieved very good results. [0003] In various optical anti-counterfeiting technologies, microstructures have been widely used because of the high brightness and obvious dynamic effects of the optical effects formed (including diffraction, non-diffraction, etc.). In order to increase the brightness of the image, the microstructure optical anti-counterfeiting technology generally uses a metal reflective layer, such as aluminum. Among them, holographic technology, the most widely used optical anti-co...

Claims

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Application Information

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IPC IPC(8): B42D25/40B42D25/324
Inventor 胡春华朱军吴远启张巍巍封敏宇
Owner ZHONGCHAO SPECIAL SECURITY TECH
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