Optically Variable Security Element with Segmented Facets
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Solution Overview
Problem
Existing optically variable security elements are complex to produce and require multiple facets to create a three-dimensional impression, making them costly and inefficient.
Innovation Solution
An optically variable security element with a motif region containing variously aligned facets, where a pattern of differently configured pattern elements creates a three-dimensional impression without the need for multiple facets per image point, allowing for simpler and more economical production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple facets are used per image point to create a three-dimensional impression, then the security against forgery is improved, but the production complexity and cost increase
Solution Approach 1:
The motif region is divided into multiple pattern elements, where each pattern element corresponds to one image point and contains multiple facets with different orientations. This segmentation allows the three-dimensional effect to be achieved through the collective arrangement of facets within each pattern element rather than requiring multiple separate facets per image point, thereby reducing production complexity while maintaining security
Solution Approach 2:
The patent introduces a new dimensional approach by arranging facets with different orientations (different tilt angles and/or azimuth angles) within each pattern element. This dimensional variation in facet orientation creates the three-dimensional impression through optical effects rather than through physical depth, simplifying the production process while enhancing forgery resistance
2Reliability
If multiple facets are used per image point to create a three-dimensional impression, then the authenticity verification reliability is improved, but the production cost increases
Solution Approach 1:
The motif region is segmented into multiple pattern elements, with each pattern element containing multiple facets of different orientations. This segmentation enables the three-dimensional effect to be achieved through the systematic arrangement of facets within each pattern element, reducing the overall number of facets required and thereby lowering production costs while maintaining high authenticity verification reliability
Solution Approach 2:
The patent utilizes changes in optical parameters (tilt angles and azimuth angles) of facets to create the three-dimensional impression. By varying these angular parameters across multiple facets within each pattern element, the system achieves high authenticity verification reliability through optical effects rather than through increased material or structural complexity, thus reducing production costs
3Shape
If two facets per point are used for encoding an image, then the three-dimensional impression is achieved, but the production complexity increases
Solution Approach 1:
The motif region is divided into multiple pattern elements, where each pattern element corresponds to one image point and contains multiple facets with different orientations. This segmentation allows the three-dimensional effect to be achieved through the collective arrangement of facets within each pattern element rather than requiring exactly two facets per image point, thereby simplifying production while maintaining the three-dimensional impression
Solution Approach 2:
Each pattern element serves multiple functions: it contains multiple facets with different orientations to create the three-dimensional effect, and simultaneously acts as a single encodable unit. This multi-functionality reduces production complexity by treating each pattern element as one element during encoding and manufacturing processes, rather than requiring separate handling of multiple individual facets
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 provides improved security against forgery and easy verification of authenticity, while being simpler and more cost-effective to produce, with a three-dimensional impression that can be perceived without aids.
Implementation Method 1
The motif region comprises facets which can reflect light of a light source. In this case, a first facet can reflect the light in the direction of a first eye of a viewer and a second facet can reflect the light in the direction of a second eye of the viewer.
Data Source
AI summary
An optically variable security element has a motif region. A plurality of differently oriented facets are arranged in the motif region. A pattern includes visible pattern elements is visible in the motif region to a viewer at least at a first viewing angle. The visible pattern elements are designed differently to portray a motif to the viewer. The motif is a three-dimensional motif. The pattern elements are designed differently such that they portray a perspective of the three-dimensional motif to the viewer.