Head-Up Display Screen Support Rigidity and Vibration Damping
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Solution Overview
Problem
Conventional head-up displays face challenges in maintaining image stability and visibility due to vibrations generated during high-speed movement of the screen, which can lead to resonance and deterioration of the display image quality.
Innovation Solution
The image display device incorporates a support base with increased rigidity in the direction of visual distance change, supported by a fixed base via dampers, which absorb vibrations and reduce screen displacement, ensuring smooth elimination of vibrations without affecting image visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the screen is moved at high speed to change visual distance, then the display functionality is improved, but vibration is generated that deteriorates image visibility
Solution Approach 1:
The damper is installed in advance between the support base and fixed base to cushion vibrations before they propagate. This prior cushioning arrangement absorbs the harmful vibrations generated during high-speed screen movement, preventing them from affecting image visibility while allowing the screen to move at required speeds for visual distance adjustment.
2Stability of the object's composition
If the support base is made rigid to prevent screen displacement, then image stability is improved, but vibration transmission increases
Solution Approach 1:
The damper serves as an intermediary element between the support base and fixed base. It mediates the interaction by providing controlled flexibility that prevents rigid vibration transmission while maintaining sufficient support for image stability. The damper absorbs vibrational energy, reducing harmful transmission to the fixed base while keeping the screen stable enough for clear image display.
3Object-affected harmful factors
If the support base is supported by fixed base via damper to reduce vibration, then vibration elimination is improved, but support rigidity decreases
Solution Approach 1:
The support system employs local quality differentiation by making the support base rigid in the visual distance direction (where structural support is critical) while using dampers for vibration absorption in other directions. This localized approach to rigidity and damping allows the system to eliminate vibrations effectively while maintaining sufficient support rigidity where needed for stable image formation.
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 configuration effectively eliminates vibrations and maintains image stability, preventing changes in visual distance and thereby preserving the quality and visibility of the display image during high-speed screen movement.
Implementation Method 1
the support base is supported by the fixed base via a damper. The support base is supported by the fixed base such that the support base has support rigidity higher in a first direction... even if vibration is generated due to a high-speed movement of the screen, the vibration is absorbed in the damper before being transmitted to the fixed base
Data Source
AI summary
An image display device includes a light source, a screen, a scanning unit, an optical system, a drive unit, a support base, and a fixed base. The screen is irradiated with light from the light source, and an image is thus formed on the screen. The scanning unit scans the light from the light source along multiple scanning lines on the screen. The optical system forms a virtual image using the light from the screen. The drive unit moves the screen in an optical axis direction. The support base supports the drive unit. The fixed base supports the support base via a damper. The support base is supported by the fixed base such that the support base has support rigidity higher in a first direction in which a visual distance of a display image is changed in association with the movement of the screen than in directions other than the first direction.