Head-Up Display Mounting Structure for Distortion-Free Image Alignment
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Solution Overview
Problem
Existing head-up display apparatuses face challenges in maintaining precise mechanical tolerances, leading to image distortion and increased installation complexity due to inaccuracies in positioning the image creation unit, which results in suboptimal image quality and requires costly calibration processes.
Innovation Solution
A head-up display apparatus with a holding device that directly secures the image creation unit to the housing part, reducing the tolerance chain and ensuring precise positioning, thereby eliminating image distortions and the need for complex calibration procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional mounting methods with multiple components are used to position the image creation unit, then the positioning accuracy deteriorates due to accumulated tolerances, but reducing the number of components simplifies the mounting structure
Solution Approach 1:
The patent combines multiple separate mounting components (mounting bracket, adjustment mechanism, securing elements) into a single integrated holding device. This holding device directly retains the image creation unit on the housing part, eliminating intermediate components and reducing the tolerance chain. The merging of functions into one component achieves precise positioning without the complexity of multiple parts working together.
2Manufacturing precision
If the emergence opening and mirror are made larger to compensate for positioning inaccuracies, then the image quality improves by reducing distortion, but the installation space requirements increase
Solution Approach 1:
The holding device is designed to pre-position the image creation unit with high accuracy before the system is assembled or installed. By establishing precise positioning in advance through the integrated holding structure, the patent eliminates the need for larger emergence openings or mirrors that would otherwise be required to compensate for potential misalignment. This preliminary precise positioning allows the use of compact optical components.
3Manufacturing precision
If complex calibration procedures are implemented to correct image distortion, then the image quality improves, but the time and cost of installation and setup increase
Solution Approach 1:
The holding device provides self-aligning features that automatically ensure correct positioning of the image creation unit relative to the housing part and optical components. The integrated design includes built-in positioning references and mechanical constraints that guide the image creation unit into the correct position without requiring external calibration equipment or procedures. This self-service positioning eliminates the need for time-consuming calibration steps.
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
This solution achieves precise and distortion-free image projection onto a light-transmissive surface, simplifying installation and reducing the overall tolerance chain, resulting in improved image quality and reduced installation complexity.
Implementation Method 1
Light can be applied to the image creation unit by means of an illumination device of the head-up display apparatus
Implementation Method 2
A holding device is secured to the housing part in the region of the illumination device, with the image creation unit being retained on the holding device
Data Source
AI summary
A head-up display apparatus for a motor vehicle is disclosed. The head-up display includes a housing part in which an image creation unit of the display apparatus is arranged, and an illumination device, by means of which light is applied to the image creation unit. The image creation unit is configured to provide an image which is projectable onto a light transmissive projection surface. A holding device is secured to the housing part in the region of the illumination device. The image creation unit is retained on the holding device.