Angled Reflective Segments for Moving Ortho-Parallactic Images
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optically variable devices lack the ability to create a dynamic, ortho-parallactic optical effect that provides a moving reflective image or shape when tilted, which is desirable for security and authentication purposes.
Innovation Solution
The use of reflective ribbons or magnetically-orientable flakes arranged in specific configurations, such as helical or spiral patterns, on a substrate to create an ortho-parallactic optical effect by reflecting light in a direction orthogonal to the tilting motion, producing a moving reflective image or shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional optically variable devices are used, then basic color-shifting effect is achieved, but dynamic ortho-parallactic optical effect with moving reflective image is not produced
Solution Approach 1:
The reflective surface is divided into multiple discrete reflective segments arranged in specific geometric patterns (such as helical or spiral configurations). Each segment can be independently oriented at specific angles, allowing the collective array to produce complex ortho-parallactic optical effects that individual conventional pigments cannot achieve.
Solution Approach 2:
The invention transitions from conventional two-dimensional color-shifting pigments to three-dimensional reflective segments with specific spatial orientations and angular configurations. This dimensional enhancement enables the segments to reflect light in ortho-parallactic directions, creating dynamic moving images that change with viewing angle in a manner impossible with traditional planar optically variable devices.
2Reliability
If static reflective surfaces are used, then simple reflection is achieved, but dynamic moving reflective image upon tilting is not produced
Solution Approach 1:
The reflective segments are configured with specific angular orientations that cause the reflected image to dynamically move across the surface when the article is tilted. The helical or spiral arrangement of segments ensures that as the viewing angle changes, the reflected light path shifts systematically, creating a moving visual effect that enhances user interaction while maintaining optical consistency.
Solution Approach 2:
The reflective segments are arranged in asymmetric helical or spiral patterns rather than symmetric configurations. This asymmetry ensures that tilting the article in different directions produces distinct moving image patterns, creating rich dynamic visual effects that respond differently to various tilting motions, thereby enhancing ease of operation through distinctive visual feedback.
3Illumination intensity
If color-shifting pigments are used, then color change with observation angle is achieved, but ortho-parallactic moving image effect is not produced
Solution Approach 1:
Instead of using uniform color-shifting pigments throughout, the invention employs reflective segments with locally varied angular orientations and configurations. Each local region has segments oriented at specific angles to produce particular reflection patterns, creating areas with different optical characteristics that collectively form a moving image effect while maintaining overall color visibility.
Solution Approach 2:
The invention combines multiple reflective segments with different orientations, angles, and configurations into a composite structure. This composite arrangement integrates various optical functions (reflection, color-shifting, image formation) into a single device, achieving the ortho-parallactic moving image effect without requiring separate components, thereby managing device complexity while enhancing illumination intensity and visual impact.
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 generates a visually dynamic ortho-parallactic optical effect, enhancing security and authentication features by creating a moving reflective image or shape that provides a distinctive and recognizable visual cue.
Implementation Method 1
The use of reflective ribbons or magnetically-orientable flakes arranged in specific configurations, such as helical or spiral patterns, on a substrate to create an ortho-parallactic optical effect by reflecting light in a direction orthogonal to the tilting motion
Data Source
AI summary
According to examples, an article may include a base layer that extends along a first dimension and a second dimension, in which the second dimension is orthogonal to the first dimension. The article may also include reflective ribbons provided on an upper surface of the base layer, in which the reflective ribbons positioned along a common plane extending in the second dimension have dihedral angles that change as a function of distance across the common plane.