AR Head-Up Display Reflector Adjustment Mechanism
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Solution Overview
Problem
Conventional head-up display devices used in augmented reality struggle to combine image information with the real-world scene effectively for drivers of varying heights, as the projected image position differs significantly based on the driver's height, leading to suboptimal augmented reality experiences.
Innovation Solution
A head-up display device incorporating a set of reflectors and a reflector adjustment mechanism, which allows for the projection of images to adjustable target positions on the windshield, ensuring that the image information aligns with the driver's eye position, thereby combining with the reality scene regardless of height, utilizing a combination of optical modules to project images at different heights and resolutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed projection system is used, then the device structure is simple, but the image position cannot be adjusted for drivers of different heights
Solution Approach 1:
The patent applies the dynamics principle by making the reflector adjustable rather than fixed. The reflector can be moved to different positions to change the projection target position on the windshield, allowing the system to adapt to drivers of different heights. This transforms a static optical system into a dynamic one that can be reconfigured based on user needs.
Solution Approach 2:
The optical system is segmented into adjustable components, specifically the reflector that can be independently positioned. This segmentation allows different parts of the system to perform specialized functions - the optical module projects the image while the adjustable reflector controls the projection position, enabling adaptability without requiring complete system redesign.
2Reliability
If the image projection position is adjusted for different driver heights, then the augmented reality effect is improved, but the device complexity increases
Solution Approach 1:
The adjustable reflector serves multiple functions: it controls the projection position for different driver heights, maintains the augmented reality combination effect, and can potentially serve as part of the adjustment mechanism structure. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
3Adaptability or versatility
If a single optical module is used, then the device structure is simple, but it cannot project images at different heights and resolutions
Solution Approach 1:
The patent segments the optical system into multiple optical modules, each capable of projecting images with different characteristics (heights and resolutions). This segmentation allows the system to display different types of information (e.g., navigation at one position, instrument data at another) simultaneously, providing projection flexibility without requiring a single complex multi-functional module.
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
The solution enables effective alignment of image information with the driver's field of view, achieving a seamless augmented reality experience by adjusting the image projection based on the driver's height, ensuring that the image is correctly combined with the real-world scene, regardless of the driver's height, and allows for dual images with different resolutions and magnification rates.
Implementation Method 1
The first optical module is configured to project a first image to the first reflector, which further reflects the first image to the second reflector for projecting the first image to a first target position
Data Source
AI summary
A head-up display device used in augmented reality is provided. The head-up display device includes a set of reflectors, a first optical module and a reflector adjustment mechanism. The set of reflectors includes at least one moveable reflector. The first optical module is configured to project a first image to at least one moveable reflector and to further project the first image to a target position through the set of reflectors. The reflector adjustment mechanism is configured to adjust the position of at least one moveable reflector to change the height of the target position.