Transparent Windscreen HUD Using Segmented Light-Emitting Materials
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Solution Overview
Problem
Existing head-up displays (HUDs) projecting information directly onto a windscreen require coatings that reduce transparency, limiting their application to specific regions and hindering the ability to provide comprehensive information to vehicle operators effectively.
Innovation Solution
A system that uses a transparent windscreen HUD with an enhanced vision system manager, graphics system, and graphics projection system to display graphical images, including navigational aids, by employing light-emitting materials that absorb excitation light and emit visible light, maintaining transparency while projecting information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If light is projected directly onto a windscreen using conventional HUD systems, then information can be displayed to the operator, but the windscreen transparency is significantly decreased and the display is restricted to limited regions
Solution Approach 1:
The windscreen is divided into multiple discrete display regions (first display region and second display region) that can independently display different types of information. This segmentation allows the system to provide comprehensive information across the entire windscreen while maintaining transparency in non-display areas, resolving the contradiction between information display capability and transparency.
2Loss of information
If conventional HUD coatings are applied to the windscreen, then graphical information can be projected, but the transparency of the windscreen is reduced
Solution Approach 1:
Different regions of the windscreen are assigned different optical properties - display regions have coatings capable of reflecting projected light while non-display regions maintain full transparency. This local differentiation allows graphical information to be projected in specific areas without compromising the overall transparency of the windscreen.
3Loss of information
If the entire windscreen is used for displaying information, then comprehensive navigational aids can be provided, but the operator's view of the environment is obstructed
Solution Approach 1:
The windscreen is segmented into multiple display regions that can be selectively activated based on navigational needs. This allows comprehensive navigational information to be distributed across different regions while leaving other areas transparent for the operator's environmental view, resolving the contradiction between information completeness and view obstruction.
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 information across the entire windscreen without compromising transparency, enhancing operator awareness and safety by providing comprehensive and unobstructed views of the environment while projecting relevant data.
Implementation Method 1
employing light-emitting materials that absorb excitation light and emit visible light
Data Source
AI summary
A system to display graphical images upon a windscreen of a vehicle including navigational aids includes the windscreen having a transparent windscreen head up display, an enhanced vision system manager monitoring a planned travel route, and generating display requirements based upon the planned travel route. The system further includes a graphics system generating the graphical images to be displayed based upon the display requirements, and a graphics projection system communicating with the graphics system and displaying the graphical images.