Portable Device Diffractive Element Authentication
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Solution Overview
Problem
Current methods for authenticating diffractive elements like holograms are subjective and qualitative, making them unreliable for untrained users and lacking in machine-readability, requiring complex and specialized detection devices.
Innovation Solution
A method using a portable device with an image recording capability to capture multiple images of diffractive elements from different directions and orientations, employing digital image processing algorithms for comparison with reference data, which can be stored locally or remotely, allowing for semi-automated and objective authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual inspection by naked eye is used for authentication, then ease of operation is improved, but reliability and objectivity deteriorate
Solution Approach 1:
The patent replaces the mechanical/visual inspection system with an automated optical detection system using a portable device. The device captures images of the diffractive element and uses algorithmic processing to objectively evaluate authentication features, substituting human visual judgment with automated optical-mechanical systems that provide both ease of operation and reliable results.
Solution Approach 2:
The portable device performs self-contained authentication by integrating image capture, processing algorithms, and reference data comparison within a single device. The system autonomously evaluates the diffractive element without requiring external laboratory equipment or expert intervention, making authentication both easy to operate and reliable through automated decision-making.
2Measurement precision
If complex specialized detection devices are used for automated evaluation, then reliability and measurement precision are improved, but device complexity and ease of operation worsen
Solution Approach 1:
The patent employs a universal portable device that can perform multiple functions: capturing images of diffractive elements, processing the images through authentication algorithms, comparing results with reference data, and providing authentication decisions. This multi-functional approach achieves high measurement precision without requiring separate specialized equipment for each function, thereby reducing overall device complexity.
Solution Approach 2:
The patent combines image capture capabilities, computational processing algorithms, and reference data storage into a single integrated portable device. By merging these previously separate components into one unified system, the invention achieves accurate automated evaluation while minimizing device complexity and improving ease of operation.
3Productivity
If machine-readable data is integrated into diffractive element, then productivity and automation are improved, but ease of operation and accessibility worsen
Solution Approach 1:
The patent introduces an intermediary portable device that bridges the diffractive element and the user. The device captures images of the element, processes the machine-readable data through algorithms, compares results with reference data, and presents authentication outcomes in an easily interpretable format. This intermediary system enables automated evaluation of machine-readable data while maintaining ease of operation for untrained users.
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 reliable, objective, and user-independent authentication of diffractive elements, including those with microstructures or pseudo-random patterns, using widely available portable devices, improving authentication efficiency and accessibility.
Implementation Method 1
Holograms and hologram-like elements are characterized by the fact that they contain diffractive structures which, when illuminated with visible light, lead to perceptible optical diffraction and interference in the transmitted or reflected light
Implementation Method 2
Holograms and hologram-like elements are characterized by the fact that they contain diffractive structures which, when illuminated with visible light, lead to perceptible optical diffraction and interference in the transmitted or reflected light
Data Source
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AI summary
The invention relates to a method for authenticating a diffractive element, e.g., a hologram, on an object or document (2), wherein at least two images of the diffractive element are recorded by means of a portable device (1). The recordings are taken in different spatial orientations of the portable device in relation to the diffractive element. Recording data are created from the images and the associated spatial orientations. The recording data are electronically compared with reference data. The comparison can be performed locally or in a server-based manner.