Vehicle Decorative Member Reflectance Gradient for Ghost Reduction
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Solution Overview
Problem
Existing measures to mitigate the ghost phenomenon in vehicle interiors, such as altering the color, shape, and surface characteristics of components, restrict design freedom, increase costs, and affect safety by reducing visibility of side mirrors during vehicle operation.
Innovation Solution
A vehicle decorative member with a decorative surface positioned between the occupant and the side glass and side mirror, featuring a reduced reflectance gradient from the occupant's side towards the side mirror, achieved through color or surface shape gradation, allowing for enhanced visibility while maintaining design flexibility and avoiding weight and cost increments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the color or surface characteristics of vehicle interior components are altered to reduce reflectance, then the ghost phenomenon is reduced, but design freedom is restricted and costs increase
Solution Approach 1:
The decorative member applies local quality by creating a reflectance gradient across its surface - the reflectance is reduced in the direction toward the visual check member while maintaining higher reflectance in other directions. This localized variation in optical properties allows the same component to simultaneously reduce ghost phenomenon in critical areas while preserving design freedom and aesthetic appeal in other areas.
2Object-affected harmful factors
If the gloss of vehicle interior components is reduced to reduce reflectance, then the ghost phenomenon is reduced, but manufacturing complexity and cost increase
Solution Approach 1:
The invention applies parameter changes by systematically varying the reflectance parameter across the decorative member's surface in a controlled gradient manner. This approach transforms the manufacturing challenge from creating complex multi-layer structures to applying a gradual parameter variation that can be achieved through conventional coating or surface treatment techniques, thereby reducing manufacturing complexity while maintaining effectiveness.
3Object-affected harmful factors
If the number of surfaces of vehicle interior components is increased to reduce ghost phenomenon, then reflectance is reduced, but design simplicity is lost and production cost increases
Solution Approach 1:
The decorative member applies segmentation by dividing its surface into multiple zones with different reflectance characteristics - specifically, the surface is segmented such that reflectance varies from one side to the other, creating effective multiple reflections in a single integrated component. This segmentation approach achieves the ghost-reducing effect of multiple surfaces while maintaining the simplicity of a single monolithic component, avoiding increased production cost.
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 effectively reduces the ghost phenomenon's impact on side mirror visibility, ensuring safer driving conditions without compromising design appeal or increasing component weight and cost.
Implementation Method 1
a reflectance of the decorative surface is reduced from a side of the occupant toward a side of the visual check member
Data Source
AI summary
A vehicle decorative member is disposed in a vehicle interior of a vehicle. The vehicle decorative member is located between an occupant and each of a transparent member and a visual check member. The vehicle decorative member includes a decorative surface. The decorative surface faces the vehicle interior. The decorative surface is formed such that a reflectance of the decorative surface is reduced from a side where the occupant is located toward a side where the visual check member is located.