Transparent Windscreen HUD Using Segmented Display Regions
Find Innovative SolutionsGenerate Solutions
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 presentation of critical vehicle operational information to the driver.
Innovation Solution
A method to represent graphical images on a transparent windscreen HUD by monitoring environmental and occupant eye data, processing critical information, and overlaying it onto the windscreen using a system that includes sensors, a graphics engine, and light emitting materials to create a transparent and informative display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If light is projected directly upon a windscreen to create a head-up display, then information can be presented to the operator, but the transparency of the windscreen is significantly decreased
Solution Approach 1:
The windscreen is divided into multiple display regions (first display region and second display region) with different optical properties. The first region uses a transparent or translucent material that maintains visibility, while the second region uses a reflective material for enhanced display visibility. This segmentation allows different parts of the windscreen to serve different functions, resolving the contradiction between information presentation and transparency.
Solution Approach 2:
Different regions of the windscreen are assigned different local qualities: the first display region has transparent or translucent properties to maintain driver visibility, while the second display region has reflective properties to enhance display visibility. This local differentiation allows the system to present information effectively without compromising overall windscreen transparency.
2Adaptability or versatility
If a coating is applied to the windscreen to enable 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 display regions with different optical characteristics. The first region uses transparent/translucent material while the second uses reflective material, allowing both regions to function as display areas. This segmentation enables full-windshield HUD functionality while maintaining driver visibility through the transparent region.
Solution Approach 2:
The windscreen serves multiple functions simultaneously: it acts as both a transparent window for driver visibility and a display surface for HUD information. The transparent or translucent portion allows visibility while the reflective portion enhances display visibility, making the windscreen a multi-functional component that resolves the limitation of restricted display regions.
3Loss of information
If reflective material is used to enhance display visibility, then information can be presented clearly, but the windscreen transparency is reduced
Solution Approach 1:
The windscreen is divided into a first display region with transparent or translucent material for maintaining visibility, and a second display region with reflective material for enhanced display visibility. This segmentation allows the reflective material to be used strategically in specific regions where display visibility is prioritized, while other regions maintain transparency for driver visibility.
Solution Approach 2:
Reflective material is applied locally to the second display region rather than uniformly across the entire windscreen. This local application of reflective quality enhances display visibility in critical areas while preserving transparency in other areas, resolving the contradiction between display clarity and windscreen transparency.
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 presentation of critical operational information to the driver without compromising windscreen transparency, enhancing vehicle safety and operational awareness by providing a comprehensive and transparent display of environmental data.
Implementation Method 1
light emitting materials to create a transparent and informative display
Implementation Method 2
graphical images are displayed upon the transparent windscreen head up display
Data Source
AI summary
A method to represent graphical images upon a transparent windscreen head up display of a vehicle includes monitoring informational inputs describing the operational environment for the vehicle, processing the informational inputs to synthesize an operational environment model, monitoring data related to an occupant eye location, converting the model into the graphical images registering the critical information according the model upon the transparent windscreen head up display based upon the monitored data related to the occupant eye location, and displaying the graphical images upon the transparent windscreen head up display.