Transparent AR Display for Vehicle Eye Tracking Alignment
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Solution Overview
Problem
Conventional augmented reality systems in vehicles fail to intuitively provide drivers with information and may interfere with their vision due to the lack of a transparent display integrated into the vehicle, leading to inconvenience and potential distractions.
Innovation Solution
An augmented reality display system utilizing a transparent display positioned between the driver and the front window, equipped with an eye position tracking camera, a front view camera, and a head front display device controller, which adjusts the display's position and image to align with the driver's line of sight, ensuring intuitive information presentation without obstructing the view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a transparent display is positioned between the driver and the front window, then the driver can see information intuitively without diverting attention from the road, but light from the display may interfere with the driver's vision
Solution Approach 1:
The patent applies local quality by dynamically adjusting the display's optical properties (transparency, brightness) in different regions and at different times. The display area is divided into multiple zones with different transparency levels, allowing information to be displayed in certain areas while maintaining transparency in others. The brightness is adjusted based on ambient light conditions and driver eye position to prevent visual interference while maintaining information visibility.
Solution Approach 2:
The patent implements dynamics by making the transparent display adjustable in real-time based on driver eye position and viewing conditions. The display can dynamically change its transparency, brightness, and content positioning according to where the driver is looking, allowing the system to adapt between providing information and maintaining clear vision as needed.
2Loss of information
If a head mounted display is used to provide information, then various kinds of information can be displayed, but the driver must wear glasses which may cause discomfort
Solution Approach 1:
The patent extracts the display function from the driver's face (removing the need for head-mounted glasses) and projects it onto the transparent display in front of the driver. This extraction eliminates the discomfort of wearing glasses while still providing comprehensive information display capabilities through the transparent medium.
Solution Approach 2:
The transparent display acts as an intermediary between the information source and the driver's eyes. Instead of directly mounting displays on the driver's face, the system uses this intermediate transparent display surface to project information, allowing the driver to view data without wearing any corrective or display devices on their face.
3Device complexity
If a simple navigation screen is displayed in the front like a head up display, then the display structure is simple, but only navigation information is shown and operation requires pressing buttons which does not intuitively provide information
Solution Approach 1:
The patent implements multi-functionality by enabling the transparent display to present multiple types of information simultaneously (navigation, vehicle status, environmental data, etc.) in a single integrated display. The display can show different information types depending on the driver's needs and eye position, eliminating the need for separate displays and button operations while maintaining relatively simple hardware structure.
Data Source
AI summary
A system includes a head front display device, an eye position tracking camera to track movement of a driver's irises, a front view camera to take a picture of a front view of the driver, a head front display device controller to implement at least one of an angle change, forward movement, backward movement, upward movement, downward movement, leftward movement, and rightward movement of the head front display device, an image adjuster to adjust an object displayed on the head front display device in association with an object of an actual view seen through the front window of the vehicle based on positions of the driver's irises obtained through the eye position tracking camera and an image of the front view obtained by the front view camera, and a display unit controlled by the image adjuster and configured to display information on the head front display device.