Angle-Dependent Coating Composition for Vivid Highlights
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing coating compositions fail to provide a coating film that significantly changes in vividness in a highlight region and appears as an achromatic color or a color close thereto in a face region, lacking the desired design diversity.
Innovation Solution
A coating composition comprising a coating film-forming resin and a pigment, where specific chroma and lightness relationships are satisfied in different viewing angles, and includes a light interference scaly pigment with a particular layer configuration to achieve the desired visual effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional coating compositions are used, then the coating film exhibits consistent color appearance, but it cannot achieve dramatic vividness change in highlight region while maintaining achromatic appearance in face region
Solution Approach 1:
The patent applies local quality by using light interference scaly pigments with specific structural characteristics that create different optical effects in different regions of the coating film. The pigments have a layered structure with specific thickness ratios that produce vividness changes in highlight regions while maintaining achromatic appearance in face regions, allowing different parts of the coating to exhibit different visual properties simultaneously.
Solution Approach 2:
The patent utilizes color changes through light interference phenomena. The coating composition employs pigments that cause the coating film to exhibit chromatic characteristics at certain viewing angles (highlight regions) and achromatic characteristics at other angles (face regions). This is achieved by controlling the spectral reflectance properties and using pigments with specific light interference characteristics that produce angle-dependent color effects.
2Adaptability or versatility
If light interference pigments are used to achieve vividness change, then design diversity is improved, but the complexity of controlling chroma and lightness relationships increases
Solution Approach 1:
The patent applies parameter changes by establishing specific quantitative relationships between chroma and lightness values at different viewing angles. The invention defines precise mathematical relationships (C*−15 > C*15 > 10, C*45 ≤ 10, and L*−15 - L*15 > 0) that must be satisfied to achieve the desired optical effects. By controlling these parameters within specified ranges, the patent simplifies the complexity of designing coatings with angle-dependent visual properties.
Solution Approach 2:
The patent uses composite materials by combining coating film-forming resins with light interference scaly pigments that have specific structural compositions. The pigments consist of layered structures with alternating high and low refractive index materials, creating a composite structure that produces the desired light interference effects while maintaining control over chroma and lightness relationships.
3Illumination intensity
If conventional pigments are used, then the coating film appears uniform, but it lacks the ability to show dramatic vividness change in highlight region
Solution Approach 1:
The patent applies dynamics by creating a coating film whose visual appearance dynamically changes with viewing angle. The light interference scaly pigments cause the coating to transition from achromatic appearance in face regions to chromatic appearance in highlight regions depending on the observation angle. This dynamic visual effect is achieved through the angle-dependent light interference properties of the layered pigment structure.
Solution Approach 2:
The patent introduces another dimension by adding angular dependency to the color appearance. Instead of uniform color properties in all directions, the coating exhibits different chromatic characteristics at different viewing angles. The highlight regions show dramatic vividness changes while face regions remain achromatic, creating a three-dimensional visual effect that enhances illumination intensity perception.
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 composition produces a coating film that exhibits a dramatic change in vividness in the highlight region while appearing achromatic in the face region, offering a unique and innovative design.
Implementation Method 1
the pigment includes a light interference scaly pigment
Implementation Method 2
reflected light R−15 having received, at an angle of −15 degrees with respect to specular light, incident light I45
Data Source
AI summary
A coating composition including a coating film-forming resin and a pigment, wherein a chroma C*−15 in an L*C*h color system based on a spectral reflectance of reflected light R−15 having received, at an angle of −15 degrees with respect to specular light, incident light I45 striking at an angle of 45 degrees with respect to a surface of a cured coating film of the coating composition and a chroma C*15 in an L*C*h color system based on a spectral reflectance of reflected light R15 having received the incident light I45 at an angle of 15 degrees with respect to the specular light satisfy the relationships of:C-15*>C15*>10,andC-15*-C15*>20,and wherein a chroma C*45 in an L*C*h color system based on a spectral reflectance of reflected light R45 having received the incident light I45 at an angle of 45 degrees with respect to the specular light is 10 or less.