Glass Dashboard Surface Treatment for Reduced Veiling Glare
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Solution Overview
Problem
Veiling glare in vehicles, caused by light reflecting off the dashboard and into the driver's eyes, is not adequately addressed by existing solutions, which often limit design options and increase heat inside the vehicle or complicate and expense windshield modifications.
Innovation Solution
A glass dashboard part with a first surface that is etched and ion implanted, reducing veiling glare by diffusely reflecting light, thereby minimizing the amount of light that reflects back into the driver's eyes, while maintaining aesthetic and design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a glossy finished dashboard is used, then aesthetic appearance is improved, but veiling glare increases
Solution Approach 1:
The patent applies ion implantation to the glass dashboard surface, changing the physical-chemical parameters of the surface layer. This creates a modified surface with reduced reflectivity while preserving the glossy aesthetic appearance, thereby reducing veiling glare without sacrificing visual appeal
Solution Approach 2:
The patent replaces mechanical/chemical surface treatments (etching, coatings) with ion implantation technology. This substitution allows for precise control of surface properties at the atomic level, achieving reduced reflectivity while maintaining surface smoothness and aesthetic quality
2Object-affected harmful factors
If a dark colored dashboard is used, then veiling glare is reduced, but heat absorption increases
Solution Approach 1:
The patent applies ion implantation only to the surface layer of the glass dashboard, creating a localized modification. The surface layer gains anti-reflective properties while the bulk material maintains its original color and optical transmission characteristics, allowing light-colored dashboards to reduce glare without absorbing excessive heat
3Object-affected harmful factors
If a textured surface is used, then veiling glare is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent replaces complex mechanical texturing processes with ion implantation, a more controlled and precise method. This substitution simplifies manufacturing by achieving the desired optical properties through atomic-level surface modification rather than macroscopic texturing
Solution Approach 2:
The patent changes the surface properties of the glass dashboard through ion implantation, modifying parameters such as surface energy, refractive index, and roughness at the micro-scale. This approach achieves glare reduction without requiring complex manufacturing processes
4Object-affected harmful factors
If windshield slope is reduced, then veiling glare is reduced, but design flexibility is limited
Solution Approach 1:
The patent extracts the glare-reduction function from the windshield geometry (slope) and transfers it to the dashboard surface treatment. This separation allows the windshield to maintain its optimal slope for aerodynamics and design while the dashboard surface independently provides glare reduction through ion implantation
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 veiling glare, improving driver visual comfort and allowing for lighter-colored dashboards without increasing heat or complexity, while maintaining the dashboard's appearance and functionality.
Implementation Method 1
the reflected light (306, 307) is diffusely reflected of the glass dashboard surface
Implementation Method 2
a glass dashboard part (201,301) comprising a glass substrate provided with a first surface (202), that is etched and ion implanted
Data Source
AI summary
A veiling glare reduction system comprising a glass dashboard part providing increased driver visual comfort, particularly a glass dashboard part arranged so that light passing through the windshield and reflected off the glass dashboard surface is partly reflected by the inner windshield surface towards a driver position providing a reduced veiling glare. A head up display system provided with a glass dashboard part having reduced veiling glare is also provided.