Adjustable Head-Up Display Reflector for Image Stability
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Solution Overview
Problem
Existing head-up displays face challenges in maintaining image stability due to adjustments in reflection angles, which alter the imaging distance and incident angles of light beams, leading to image distortion and quality issues across varying driver heights and positions.
Innovation Solution
An adjustable reflector system comprising a base, an adjusting frame, a reflecting element, and a control module with a linkage arm and driving unit, allowing for precise adjustment of the reflection angle without significantly changing the imaging distance or incident angle, thereby minimizing image distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the reflection angle of the reflecting mirror is adjusted to accommodate different driver heights and seating positions, then the light beam can be reflected to appropriate positions on the optical combiner, but the imaging distance and incident angle change, causing image distortion and quality degradation
Solution Approach 1:
The patent employs a dynamic adjustment mechanism where the reflecting mirror is mounted on a movable frame that can be adjusted in position and angle. This allows the system to adapt to different driver heights and seating positions while maintaining optimal optical parameters. The dynamic structure enables real-time adjustment of the mirror's orientation to compensate for varying observer positions without compromising image quality.
Solution Approach 2:
The patent changes the positional and angular parameters of the reflecting mirror to accommodate different driver configurations. By adjusting the mirror's position along the optical path and its orientation angle, the system can redirect light beams to appropriate locations on the optical combiner while maintaining consistent imaging distance and incident angle parameters to prevent distortion.
2Ease of operation
If the incident position of the light beam is moved from a first position to a second position on the optical combiner, then the light beam can reach the appropriate position for different driver heights, but the travelling distance of the light beam becomes shorter, changing the imaging distance and affecting image quality
Solution Approach 1:
The patent uses a dynamically adjustable reflecting mirror mounted on a movable frame structure. This dynamic setup allows the mirror to be repositioned and reoriented to direct light beams to different locations on the optical combiner while maintaining consistent optical parameters. The dynamic adjustment compensates for the shortened travelling distance by adjusting the mirror's position and angle, thereby preserving image quality and stability across different driver configurations.
3Adaptability or versatility
If the reflection angle is adjusted to accommodate varying driver positions, then different drivers can see the displayed information, but the incident angle of the light beam changes, causing image distortion
Solution Approach 1:
The patent employs a dynamic adjusting mechanism where the reflecting mirror is mounted on a movable frame that can be positioned and oriented to accommodate different driver heights and seating positions. This dynamic structure enables the system to adapt to varying observer positions while maintaining optimal optical parameters to minimize image distortion.
Solution Approach 2:
The patent adjusts the positional and angular parameters of the reflecting mirror to accommodate different driver configurations. By precisely controlling the mirror's position and orientation, the system can redirect light beams to appropriate locations while maintaining consistent incident angles to minimize image distortion and shape deformation.
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 enhances image stability by maintaining a consistent imaging distance and reducing distortion, ensuring clear and undistorted virtual or real images are displayed on the optical combiner regardless of driver height or vehicle conditions.
Implementation Method 1
The reflecting element is arranged on the adjusting frame for reflecting a light beam generated by an image source of the head-up display to an optical combiner of the head-up display
Data Source
AI summary
An adjustable reflector of a head-up display includes a base, an adjusting frame, a reflecting element and a control module. The adjusting frame has a first end and a second end opposite to the first end. The first end is pivoted to the base, and the second end is rotatable around the first end. The reflecting element is arranged on the adjusting frame for reflecting a light beam generated by an image source to an optical combiner. The control module includes a linkage arm and a driving unit. A first end of the linkage arm is slidably connected to the adjusting frame. The driving unit is connected to a second end of the linkage arm and configured to drive the linkage arm to rotate for adjusting an included angle between the adjusting frame and the base.