Pixel-Array Optically Variable Element for Memorable Security Effects
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Solution Overview
Problem
Existing security elements, such as diffractive structures and thin-film elements, are becoming familiar to the public, making them less effective in preventing forgery and less noticeable in security documents.
Innovation Solution
An optically variable element with a pixel array comprising pixels that project, diffract, and scatter electromagnetic radiation at predefined solid angles, creating high-brightness and brilliant optical movement effects, which can be detected by observers and sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If diffractive structures or thin-film elements are used as security elements, then color effects are displayed in dependence on viewing angle, but the security elements become familiar to the public and are scarcely noticed anymore
Solution Approach 1:
The patent applies color changes by using pixel arrays with structures that project, diffract, and scatter electromagnetic radiation to create optically variable effects including color changes, brightness variations, and movement effects that are memorable and easily detectable by the public
Solution Approach 2:
The patent changes physical parameters by controlling the projection, diffraction, and scattering of electromagnetic radiation at specific solid angles to create high-brightness and brilliant optical movement effects that differ from conventional security elements
2Ease of operation
If conventional diffractive structures are used, then rainbow effects are displayed, but the effects are not memorable and difficult to detect for laypersons
Solution Approach 1:
The pixel arrays with radiation-projecting structures create vivid color changes, high-brightness effects, and optical movement that are easily detected by laypersons without technical aids, improving both detection ease and forgery detection effectiveness
Solution Approach 2:
The patent creates optical movement effects through the interaction of electromagnetic radiation with the pixel array structures, producing dynamic visual effects that are memorable and easily detectable by observers
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
The solution provides a memorable and easily detectable optically variable effect with high brilliance and intensity, enhancing security document authenticity verification and forgery detection.
Implementation Method 1
one or more structures of the one or more structures project, diffract and/or scatter incident electromagnetic radiation at one or more solid angles
Implementation Method 2
one or more structures of the one or more structures project, diffract and/or scatter incident electromagnetic radiation at one or more solid angles
Data Source
AI summary
An optically variable element, in particular a security element and/or a decorative element, preferably for security documents, wherein the optically variable element has at least one pixel array having two or more pixels, wherein one or more pixels of the two or more pixels have one or more structures, and wherein one or more structures of the one or more structures project, diffract and/or scatter incident electromagnetic radiation at one or more solid angles. A security document, in particular comprising one or more optically variable elements, a method for producing an optically variable element, preferably a security element and/or a decorative element, preferably for security documents, as well as a method for producing a security document, preferably comprising one or more layers, preferably comprising one or more optically variable elements.