Security Element Moiré Magnification Raster Superimposition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current security elements, particularly those using moiré magnification arrangements, face challenges in providing enhanced protection against copying and reproduction, as they often result in motifs sliding over each other when tilted, rather than allowing for precise superimposition of grid elements.
Innovation Solution
A security element with a moiré magnification arrangement and an additional raster structure applied over micro-imaging elements, where the first motif is designed as a line or dot raster and the second motif is also a raster, allowing for precise coordination and superimposition of grid elements, enabling the first motif to appear or disappear based on viewing direction, with the second motif potentially covering the first.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a moiré magnification arrangement is used to provide viewing-direction-dependent image information, then security against copying is improved, but the motifs slide over each other when tilted instead of allowing precise superimposition of grid elements
Solution Approach 1:
The invention divides the security element into distinct functional layers: a carrier with micro-imaging elements forming a first raster, and a separate structure with a second raster applied over the micro-imaging elements. This segmentation allows each raster to be independently designed and positioned, enabling precise coordination between the two rasters to achieve exact superimposition of grid elements when viewed from specific directions, while maintaining the moiré magnification effect for viewing-direction-dependent information display.
2Reliability
If additional structures are added to the security element to improve recognition value and information visibility, then security is enhanced, but the element thickness increases
Solution Approach 1:
The invention employs a thin-film structure where a second raster is applied directly over the micro-imaging elements on the carrier. This thin-film approach allows the addition of multiple functional layers (motif layer, second raster structure) while maintaining overall element thinness. The flexible thin-film design enables precise positioning of the second raster to achieve exact grid superimposition without adding significant thickness, thereby enhancing recognition value and information visibility while keeping the element profile sleek and suitable for integration into security papers and documents.
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
This configuration enhances protection against copying by allowing the first motif to be concealed or revealed based on viewing direction, achieving a thinner security element with improved recognition value and additional information visibility in specific viewing directions, while maintaining high security against unauthorized reproduction.
Implementation Method 1
at least one motif layer (4) arranged under the micro-imaging elements (3), which together with the micro-imaging elements (3) forms a moiré magnification arrangement which images a first motif (10) in front of the top (2), the position of the first motif (10) depending on the viewing direction
Data Source
Figure 1~4
AI summary
The invention relates to a security element for security papers, value documents, or the like, comprising - a carrier (2) that has an upper face, - several micro-imaging elements (6) lying on the upper face of the carrier (2) and at least one motif layer (4) lying under the micro-imaging elements (6), said motif layer together with the micro-imaging elements (6)forming a moiré magnification arrangement, which displays a first motif (10) in front of the upper face, the position of said first motif (10) depending on the viewing angle, - and a structure (7) which lies above the micro-imaging elements (6) and which shows a second motif (10) in a spatially specified position with respect to the first motif (8) when viewed from the upper face, wherein - the first motif (10) is designed as a raster image which has a first raster, and - the structure (7) which lies above the micro-imaging elements (6) is likewise designed as a raster image having a second raster which is adapted to the first raster.