Fluorescent Security Item Intensity Authentication
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Solution Overview
Problem
Conventional security items using fluorescent materials are easily recognizable and duplicable, making it difficult to distinguish genuine from counterfeit products, especially with the advancement of measuring equipment.
Innovation Solution
A security item utilizing the intensity of a fluorescent material with intrinsic luminescence properties, where the content is optimized between 0.2 to 3.0 wt %, allowing for a relative intensity difference calculation to determine authenticity, and a user identification system using a detector to measure emission wavelengths for authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional fluorescent materials are used in security items, then the security elements can be easily recognized and copied with general measuring equipment, but the security against counterfeiting is insufficient
Solution Approach 1:
The patent changes the parameter of fluorescent material concentration to create unique intensity characteristics. By controlling the fluorescent material content within specific ranges (0.01-10% wt, preferably 0.1-5% wt), the invention creates items with distinct emission intensities that are difficult to replicate, thus improving anti-counterfeiting security while maintaining detectability through intensity measurement
Solution Approach 2:
The patent incorporates fluorescent materials into the item during the manufacturing process itself, rather than adding them later. This preliminary incorporation ensures the fluorescent characteristics are intrinsic to the item and difficult to replicate, as counterfeiters would need to replicate both the physical item and the precise fluorescent material distribution within it
2Ease of operation
If fluorescent materials are used to create security elements, then the items can be identified under UV light, but the security elements become easily duplicable with advanced measuring equipment
Solution Approach 1:
The patent applies fluorescent materials to specific local regions or patterns on the item rather than uniformly across the entire surface. This creates unique local fluorescent characteristics that are difficult to replicate, as counterfeiters would need to precisely reproduce both the pattern and the fluorescent material distribution in each local region
Solution Approach 2:
The fluorescent materials are incorporated during the manufacturing process, making the security elements intrinsic to the item. This preliminary action ensures that duplication requires not only copying the visible features but also replicating the fluorescent material distribution, significantly increasing duplication difficulty
3Illumination intensity
If the fluorescent material content is increased to enhance security characteristics, then the luminous intensity increases, but the cost and complexity of the security item increase
Solution Approach 1:
The patent optimizes the fluorescent material concentration parameter to achieve sufficient luminous intensity within specific ranges (0.01-10% wt, preferably 0.1-5% wt). This parameter optimization ensures adequate brightness for identification while avoiding excessive material usage that would increase cost and complexity. The invention also controls particle size (0.1-10 μm) to enhance efficiency
Solution Approach 2:
The patent replaces complex mechanical or physical security features with a simpler chemical-based fluorescent system. By using fluorescent materials that emit light under UV irradiation, the invention achieves security functionality through optical properties rather than complex mechanical structures, thereby reducing overall item complexity while maintaining sufficient luminous intensity
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
Enables precise determination of authenticity and user identification through the intensity of the fluorescent material, reducing counterfeiting attempts by making it difficult to duplicate the security elements.
Implementation Method 1
a security item containing a fluorescent material having intrinsic luminescence properties upon irradiation with excitation light
Data Source
AI summary
Provided is a security item using the intensity of fluorescent materials and a user identification system using same, the security item containing fluorescent materials that have intrinsic luminescent characteristics when irradiated with excitation light, wherein the fluorescent materials are contained in an amount of 0.2-3.0 wt % on the basis of the weight of the security item, and the difference in relative value calculated by formula (I), according to a 0.2-0.5 wt % difference in the amount of the fluorescent materials, is at least 3. Formula (I): the relative value of χ wt % of fluorescent materials=(the relative intensity of the emission wavelength of χ wt % of the fluorescent materials×100)/(the relative intensity of the emission wavelength of 3.0 wt % of the fluorescent materials).