Optical Interference Decoration Member for Depth Perception
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Solution Overview
Problem
Conventional decorative films struggle to create a sense of depth on a single plane and are limited in expressing various colors on three-dimensional patterns, with fixed colors at different viewing angles.
Innovation Solution
A decoration member comprising a substrate and a decorative layer, where the decorative layer includes one or more light reflection and/or light absorption layers, allowing for light reflection and absorption that creates constructive and destructive interference, enabling the expression of specific colors through thickness variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional printing or deposition methods are used to express colors on a decorative film, then color representation is achieved, but multiple printing passes are required for different colors and three-dimensional patterns cannot be practically implemented
Solution Approach 1:
The patent changes the parameter of color expression from additive printing to optical interference. By controlling the thickness of the transparent resin layer (parameter change), different colors are achieved through constructive and destructive interference of light waves, eliminating the need for multiple printing passes
Solution Approach 2:
The patent replaces the mechanical printing system with an optical system. Instead of physically depositing pigments through printing, the color is generated optically through interference patterns created by varying layer thickness, substituting a mechanical process with an optical phenomenon
2Stability of the object's composition
If conventional decorative films use fixed color layers, then color stability is maintained, but the color does not change with viewing angle and lacks depth perception
Solution Approach 1:
The patent introduces dynamics to the color presentation by making it angle-dependent. The color observed changes dynamically as the viewing angle changes, created by the interference pattern in the transparent resin layer. This allows the same physical structure to present different colors from different angles while maintaining compositional stability
Solution Approach 2:
The patent adds a new dimension to color expression by incorporating viewing angle as a variable. Instead of color being fixed in two dimensions (hue and saturation), a third dimension (viewing angle) is introduced, creating a three-dimensional color experience that provides depth perception and angle-dependent color variation
3Shape
If physical surface structures are used to create depth effect, then tactile depth is achieved, but the actual distance from the decoration member to the observer's eyes does not match the visually sensed distance
Solution Approach 1:
The patent creates an optical copy of depth rather than a physical copy. Instead of relying on physical surface relief to convey depth, it uses interference patterns that visually simulate depth. The optical illusion of depth is created through color variation with angle, matching the visually sensed distance to the actual distance
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 decoration member achieves surface characteristics with a sense of depth, allowing for the expression of multiple colors on three-dimensional patterns, independent of physical surface structures, by varying the thickness of the light reflection and absorption layers.
Implementation Method 1
a light reflection layer provided on the substrate; a light absorption layer provided on the substrate, wherein the light absorption layer and the light reflection layer are alternately stacked a plurality of times
Implementation Method 2
a light absorption layer provided on the substrate, wherein the light absorption layer and the light reflection layer are alternately stacked a plurality of times
Implementation Method 3
allowing for light reflection and absorption that creates constructive and destructive interference, enabling the expression of specific colors through thickness variations
Data Source
Figure 1~2
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Figure 5~6
AI summary
Provided is a decoration member including a substrate and a decorative layer provided on the substrate, wherein the decoration member has a depth parameter value δ1m represented by Formula 1 of 0.15 or more.