Security Element Motif Design for Anti-Counterfeiting
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Solution Overview
Problem
Current security elements for data carriers, such as banknotes and identification documents, lack effective protection against counterfeiting and a simple method for authenticity verification.
Innovation Solution
A security element featuring first and second motif elements that exhibit a light-dark contrast under visible light, a uniform color under combined visible and ultraviolet light, and an inverted contrast under ultraviolet light, creating a dynamic effect when the distance between a UV light source and the element is periodically changed, utilizing fluorescent materials to enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fluorescent security elements are used, then basic luminescence protection is provided, but the protection level against counterfeiting remains insufficient and verification is not simple
Solution Approach 1:
The patent applies color change principles by using fluorescent materials that exhibit different visible colors under different illumination conditions. The first motif elements contain fluorescent material invisible under visible light but visible under UV light, while the second motif elements have different color behavior, creating dynamic color transformations that are difficult to replicate and verify through simple visual inspection
Solution Approach 2:
The patent uses composite materials by combining fluorescent materials with specific color properties in the first motif elements, and different materials in the second motif elements. This creates a multi-layered security feature where the interaction of different materials under various lighting conditions produces a complex optical effect that is easy to verify but difficult to counterfeit
2Measurement precision
If multiple viewing conditions are implemented for verification, then authenticity verification becomes more reliable, but the verification process becomes more complex
Solution Approach 1:
The patent implements periodic action by creating a dynamic optical effect that changes periodically as the observer moves or as lighting conditions change. The first and third motifs create a moving image effect when viewed under alternating illumination conditions, allowing verification through simple observation of the dynamic effect rather than complex multi-step verification procedures
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides increased protection against counterfeiting and allows for easy authenticity verification through a dynamic, visually striking effect that enhances the perceived movement or rotation of the motif elements, making it difficult to replicate.
Implementation Method 1
the second color layer contains a material that luminesces under UV radiation, which is invisible when illuminated with visible light and exhibits a second visible color when illuminated with ultraviolet light
Data Source
AI summary
The invention relates to a security element for a data storage device, in particular a value document, comprising a data storage substrate, the front side of which has first motive elements and second motive elements, wherein: the first motive elements, under first viewing conditions, show a darker color than the second motive elements, such that the viewer perceives the first and second motive elements in the form of a light-dark-contrast designated as first motive; the first motive elements and the second motive elements, under second viewing conditions, show an essentially uniform, visible color and form a second motive; the first motive elements, under third viewing conditions, show a lighter color than the second motive elements, such that the viewer perceives the first and second motive elements in the form of a light-dark contrast designated as third motive, in comparison with the light-dark contrast of the first motive inverted light-dark contrast; wherein the first motive and the third motive evoke in the viewer the impression of a moving image when there is an oscillating change between the first and the third viewing conditions, and the first, second and third viewing conditions are defined as follows: first viewing conditions: viewing when by means of with visible light; second viewing conditions; viewing when lit by means of a combination of visible light and ultraviolet light in essentially equal parts; third viewing conditions: viewing when lit by means of ultraviolet light.