Security Element Curved Microstructures 3D Effects
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Solution Overview
Problem
Current security elements lack advanced visual effects and are vulnerable to forgery, particularly in high-security documents like ID cards and banknotes, where they fail to provide robust authentication and anti-counterfeiting features.
Innovation Solution
A security element with microstructures that create three-dimensional (3D) and movement effects, such as morphing and flip effects, by arranging image points along curved paths, providing achromatic or monochromatic optical variability that enhances authentication and security against forgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional security elements are used, then manufacturing is simple, but visual effect and anti-counterfeiting capability are insufficient
Solution Approach 1:
The security element is divided into multiple functional layers including a substrate layer, optically active layer with microstructures, and protective layers. Each layer performs a specific function: the substrate provides mechanical support, the optically active layer generates authentication effects through microstructures, and protective layers ensure durability. This segmentation allows complex authentication features to be achieved while maintaining manageable manufacturing processes for each individual layer.
Solution Approach 2:
The patent introduces curved paths (2D curvature) for arranging image points within the optically active layer, transforming traditional flat security patterns into three-dimensional optical effects. The image points are positioned along curved trajectories in the x-y plane, creating depth perception and movement effects when viewed from different angles. This dimensional enhancement significantly improves authentication security without requiring complex multi-layer stacking.
2Reliability
If advanced optical effects are added to security elements, then authentication capability improves, but manufacturing complexity increases
Solution Approach 1:
The patent replaces complex mechanical manufacturing processes with direct optical patterning methods. Instead of physically constructing three-dimensional structures through multiple machining steps, the curved paths and image point arrangements are directly formed using photolithography or laser writing techniques on the optically active layer. This substitution maintains manufacturing simplicity while achieving advanced authentication effects through precise optical design rather than mechanical complexity.
3Illumination intensity
If image points are arranged in curved paths, then 3D and movement effects are enhanced, but structural complexity increases
Solution Approach 1:
The patent systematically applies curved paths (circular, elliptical, or spiral trajectories) for arranging image points in the optically active layer. These curved arrangements create authentic three-dimensional optical effects and movement illusions when illuminated, as light reflects off points positioned along the curves at different depths and angles. The curvature is mathematically defined but physically implemented through straightforward coordinate mapping in the layer structure, avoiding unnecessary structural complexity while maximizing optical effect strength.
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 security element achieves visually appealing and robust 3D movement and morphing effects, improving authentication and making it difficult to forge, as the effects depend on viewing and illumination angles, providing enhanced security features.
Implementation Method 1
The first microstructures, preferably when irradiated with light, generate one or more optical effects that are perceptible to a human observer... provide one or more 3D effects and/or movement effects
Data Source
Figure 1a~1e
Figure 2a
Figure 2b~2d
AI summary
The invention relates to a security element that comprises one or more first microstructures, said first microstructures each being provided in one or more at least partially curved tracks or in one or more at least partially curved sections of a track, and/or each extending along one or more at least partially curved tracks or along one or more at least partially curved sections of a track. The invention also relates to a method in which at least one data set containing image points of one or more image elements is provided which contains the location arrangement of the image points and, on the basis of said image point location arrangement, one or more at least partially curved tracks or one or more at least partially curved sections of one or more tracks are determined and one or more first microstructures are provided in said one or more tracks or sections of tracks, wherein these microstructures provide, under illumination, a first optically variable piece of information, in particular one or more 3D effects and/or effects of motion, and preferably achromatic or mono-chromatic 3D effects and/or effects of motion.