Multi-view Windshield Display for Driver-Passenger AR Overlay
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Solution Overview
Problem
Existing automotive display systems fail to provide efficient information sharing between drivers and passengers, as passengers often lack a clear line of sight to projected information, and the information may not accurately overlay road geometry from their perspective, hindering collaborative activities.
Innovation Solution
A multi-view display device with Augmented Reality Head Up Display (ARHUD) and Extended View Display (EV) modules, utilizing eye trackers and road detection modules to project dedicated and common displays onto the windshield, ensuring visibility and accurate overlay of road geometry for both drivers and passengers, with the ARHUD using ultraviolet lasers and phosphor films for projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If information is projected onto a screen, then the driver can see the information, but the information does not overlay the road geometry from the passenger's perspective, requiring time for the passenger to determine road geometry
Solution Approach 1:
The windshield display differentiates local quality by providing customized information overlays for different viewing positions. The driver receives information optimized for their perspective while the passenger receives information aligned with their specific viewpoint and road geometry, eliminating the time delay for geometric interpretation
Solution Approach 2:
The system creates multiple virtual copies of the information display, each tailored to a specific user's perspective. These copies are projected at different locations on the windshield with adjusted orientations and content subsets, allowing each user to see information that naturally aligns with their view of the road
2Device complexity
If a single display system is used for both driver and passenger, then the system is simple, but it cannot provide dedicated information to each user simultaneously
Solution Approach 1:
The windshield serves multiple functions simultaneously as both a transparent viewing surface and a multi-zone display medium. The single optical path supports multiple projection zones that can display different information to different users, providing versatility without requiring separate physical display devices for each user
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 efficient information sharing and collaboration between drivers and passengers by ensuring that both can accurately view and interact with road-related information, enhancing safety and usability during in-vehicle activities.
Implementation Method 1
the ARHUD using ultraviolet lasers and phosphor films for projection
Implementation Method 2
the ARHUD using ultraviolet lasers and phosphor films for projection
Data Source
AI summary
A multi-view display device is provided for a collaborative co-pilot system (system) of a vehicle having a windshield. The system includes one or more input devices for generating an input signal associated with a road condition. The multi-view display device includes one or more single-user viewing devices, with each single-user viewing device including an Augmented Reality Head Up Display module (ARHUD) for generating a dedicated display associated with the road condition. The ARHUD projects the dedicated display onto an associated portion of the windshield that is visible to a corresponding single user and overlaying a road geometry associated with the road condition. The multi-view display device further includes an Extended View Display module (EV display module) for generating a common display that is visible to a plurality of users including each one of the single users.