Vehicle Head-Up Display Mirror Control for Adaptive AR Images
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Solution Overview
Problem
Existing head-up displays for vehicles lack the ability to dynamically adjust the position, size, depth, transparency, and inclination of multiple virtual images, limiting their effectiveness in providing augmented reality enhancements.
Innovation Solution
A head-up display system featuring a mirror unit with multiple mirrors and a display layer that can change the inclination of mirrors to separate, connect, or overlap virtual images, utilizing linearly-polarized light to create distinct display regions and adjust image positions based on vehicle distance and road conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a head-up display includes two image sources to form two virtual images, then the convenience and information display capability are enhanced, but the device complexity increases
Solution Approach 1:
The patent combines two image sources and their corresponding virtual images into a single integrated head-up display system. The controller manages both image sources, adjusting their positions, sizes, and transparency levels simultaneously to provide comprehensive driving information without requiring separate display systems
Solution Approach 2:
The head-up display system is designed to handle multiple types of information from different image sources (navigation, vehicle status, warning signals) through a unified display interface. The single windshield display area serves multiple functions by dynamically adjusting virtual image parameters based on driving conditions
2Adaptability or versatility
If the head-up display uses fixed virtual image positions, then the device complexity is reduced, but the adaptability to different driving conditions deteriorates
Solution Approach 1:
The patent implements dynamic adjustment of virtual image parameters including position, size, and transparency. The controller continuously modifies these parameters based on real-time driving conditions such as vehicle speed, navigation requirements, and environmental factors, transforming the display from static to adaptive
Solution Approach 2:
The system changes multiple parameters of the virtual images simultaneously - position coordinates, size dimensions, and transparency levels - to adapt to different driving scenarios. For example, warning signals may be displayed with higher transparency and larger size during critical situations
3Loss of information
If multiple virtual images are displayed with high transparency, then the information visibility is improved, but the image quality and clarity deteriorate
Solution Approach 1:
The patent applies different transparency levels to different virtual images based on their importance and type. Critical warning signals are displayed with high transparency for maximum visibility, while routine information like navigation cues use lower transparency to maintain image clarity and reduce visual distraction
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 dynamic adjustment of virtual images to enhance augmented reality by providing stereoscopic views, collision warnings, and adaptive road guidance, improving driver awareness and safety.
Implementation Method 1
a mirror unit comprising a first mirror for reflecting first and second image lights toward a windshield of the vehicle
Implementation Method 2
the display layer may display a first virtual image corresponding to linearly-polarized light in a first direction in a first display region of the windshield of the vehicle, and display a second virtual image corresponding to linearly-polarized light in a second direction
Data Source
AI summary
A head-up display for a vehicle is configured to change display positions of a plurality of virtual images displayed through a windshield of the vehicle or the like to implement augmented reality by a control method. The head-up display includes a mirror unit including a first mirror for reflecting first and second image lights toward a windshield of the vehicle, a display layer located at the windshield of the vehicle to display a first virtual image corresponding to the first image light in a first region, and display a second virtual image corresponding to the second image light in a second region, and a controller configured to change an inclination of the first mirror to change a display position of the first and the second virtual image.