Transparent Windscreen HUD Gaze Location Optimization
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Solution Overview
Problem
Existing head-up displays in vehicles that project information directly onto the windscreen require coatings that reduce transparency, limiting their application to specific regions and affecting driver visibility.
Innovation Solution
A method to display registered graphics on a substantially transparent windscreen using an enhanced vision system that monitors the environment and driver input to determine a recommended continuous gaze location, allowing for dynamic projection of information without compromising windscreen transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If light is projected directly onto the windscreen for head-up display, then information can be displayed to the driver, but the windscreen transparency is significantly decreased
Solution Approach 1:
The windscreen is divided into multiple display regions, with the first region optimized for high transparency and the second region for information display. This segmentation allows the system to maintain overall windscreen transparency while providing dedicated display areas, resolving the contradiction between information display capability and transparency.
2Adaptability or versatility
If a coating is applied to the windscreen for light projection, then head-up display functionality is achieved, but the display is restricted to limited regions
Solution Approach 1:
The windscreen is segmented into multiple regions with different optical properties. The first region maintains high transparency while the second region accepts light projection for display. This allows the system to achieve full windscreen display capability without compromising overall transparency, as each region is optimized for its specific function.
Solution Approach 2:
Different regions of the windscreen are given different local qualities - the first region has high transparency for visibility, while the second region has display capabilities. This local differentiation allows the system to provide comprehensive display functionality across the entire windscreen while maintaining transparency where needed.
3Ease of operation
If the driver looks at specific locations for optimal control, then vehicle control is improved, but the driver must constantly shift gaze between information and road
Solution Approach 1:
The system merges the information display with the road view by projecting display content onto the windscreen in the driver's natural field of view. The graphic element is positioned to coincide with or near the optimal gaze location for vehicle control, allowing the driver to simultaneously obtain information and maintain proper gaze direction without time-consuming shifts in attention.
Solution Approach 2:
The system monitors the driver's gaze location and dynamically adjusts the position of the graphic element to maintain alignment with the optimal gaze location. This feedback mechanism ensures that information remains visible at the precise location where the driver needs to look for optimal vehicle control, eliminating the need for gaze shifting.
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
Enables the display of critical driving information across the entire windscreen while maintaining transparency, improving driver focus and vehicle control by directing the driver's gaze to essential road features and potential hazards.
Implementation Method 1
Display techniques are known wherein light is projected upon a screen, and the light is converted into a viewable display upon the screen
Data Source
AI summary
A method to display a registered graphic upon a substantially transparent windscreen head-up display within a source vehicle includes monitoring an operating environment of the source vehicle, monitoring a driver registration input, determining a recommended continuous gaze location based upon the operating environment and the driver registration input, and displaying the registered graphic upon the substantially transparent windscreen head-up display.