Security feature identification method and reflection type safety element film

A security element and security feature technology, applied in special patterns, patterns characterized by light projection effects, decorative arts, etc., can solve the problems that cannot be further thinned, security elements cannot respond dynamically to light, restrict the scope of application and safety performance, etc. , to achieve high anti-counterfeiting safety performance, compact structure, and thin overall thickness

Active Publication Date: 2017-06-20
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned systems are all based on the principle of Moiré magnification imaging, and their micro-graphic arrays need to be set at the focal length of the reflective micro-optical array.
There are two shortcomings in this structure: 1) The thickness of the structure is still limited by the focal length of the micro-optical array, and it cannot be further thinned
2) The secure element cannot dynamically respond to changes in illumination
Thus restricting its scope of application and safety performance

Method used

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  • Security feature identification method and reflection type safety element film
  • Security feature identification method and reflection type safety element film
  • Security feature identification method and reflection type safety element film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment provides a reflective security element film and its security identification identification method, such as figure 1 and 2 As shown, it includes a focusing element array layer 1, a substrate layer 2, a reflective layer 4 and a micro-text array layer 3, and the focusing element array layer 1, the substrate layer 2, and the reflective layer 4 are sequentially bonded, and the micro-text array Layer 3 is obtained by setting microtext (microtext unit) on a transparent substrate. The focusing element array layer 1 is composed of spherical lens units arranged orthogonally, and the array period is T. The micro-text units are arranged orthogonally, and the array period is 1.005T. The symmetry axis of the focusing element array and the symmetry axis of the micro-text unit array are parallel to each other. The microtext unit is located at 0.2 times the focal length of the focusing element array.

[0053] Such as figure 1 As shown, under the illumination of a po...

Embodiment 2

[0057] This embodiment provides a reflective security element film and its security identification identification method, such as Figure 4 and 5 As shown, it includes a focusing element array layer 1, a base material layer 2, a reflective layer 4 and a micro-graphic array layer 3, and the focusing element array layer 1, the base material layer 2, and the reflective layer 4 are bonded in sequence, and the micro-image The text unit is embedded in the substrate layer 2 to form the micro-text array layer 3 . The focusing element array layer 1 is composed of spherical lens units arranged orthogonally, and the array period is T. The micro-text units are arranged orthogonally, and the array period is 0.995T. The symmetry axis of the focusing element array and the symmetry axis of the micro-text unit array are parallel to each other. The microtext unit is located at 0.1 times the focal length of the focusing element array.

[0058] Such as Figure 4 As shown, under the illuminat...

Embodiment 3

[0062] This embodiment provides a reflective security element film, such as Figure 7 and 8 As shown, it includes a focusing element array layer 1, a base material layer 2, a reflective layer 4 and a micro-graphic array layer 3, and the reflective layer 4, the focusing element array layer 1, and the base material layer 2 are bonded in sequence, and the micro-image The text unit is embedded in the substrate layer 2 to form the micro-text array layer 3 . The focusing element array layer 1 is composed of spherical lens units arranged orthogonally, and the array period is T. The micro-text units are arranged orthogonally, and the array period is 1.003T. The symmetry axis of the focusing element array and the symmetry axis of the micro-text unit array are parallel to each other. The microtext unit is located at 0.2 times the focal length of the focusing element array.

[0063] Such as Figure 7 As shown, under the illumination of a point light source, the light passes through ...

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Abstract

The invention discloses a security feature identification method. The method is implemented based on a reflection type safety element film composed of a focusing element array layer, a base material layer, a micrographic array layer and a reflection layer. True and false identification is achieved through light response produced when a point light source or a collimation light source irradiate the reflection type safety element film. The invention further provides the reflection type safety element film. Compared with other safety elements, the reflection type safety element film is more compact in structure, capable of carrying out real-time dynamic response on light illumination, capable of achieving the response effect which is unrealizable for other safety elements, and higher in anti-false safety performance.

Description

technical field [0001] The invention relates to the field of optical anti-counterfeiting, in particular to a method for identifying security features and a reflective security element film, which can be used for anti-counterfeiting marks of important objects such as securities, certificates, certificates, and cards. Background technique [0002] Counterfeit and shoddy goods have always plagued regulatory authorities and people's daily life. How to obtain secure elements with higher anti-counterfeiting performance is a goal that is constantly pursued in the field. Optical anti-counterfeiting products have significant visual identification features, and are one of the important anti-counterfeiting technologies. Holographic technology is the mainstream technology in the field of optical anti-counterfeiting, which has good anti-counterfeiting effect and is widely used. However, with the development and maturity of this technology, holographic products are more and more used in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B44F1/06B44F1/10B42D25/00
CPCB42D25/00B44F1/06B44F1/10
Inventor 楼益民吴锋民胡娟梅
Owner ZHEJIANG SCI-TECH UNIV
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