Display Device Tilt Prevention for Multi-Depth Expression
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Solution Overview
Problem
Current 3D image display technologies face challenges in precisely aligning the display and optical systems to achieve multi-depth expression, leading to issues with image clarity and depth perception in virtual reality and augmented reality applications.
Innovation Solution
An image display device with a light modulating display, a light transmitting unit, a driving unit that adjusts the distance between the display and the light transmitting unit, and a tilt prevention unit to maintain alignment and prevent tilting, utilizing shape memory alloys or electroactive polymers for precise positioning and elastic forces to ensure accurate depth representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the distance between the display and the light transmitting unit is changed for multi-depth expression, then the depth perception capability is improved, but the alignment between the display and the optical system becomes misaligned
Solution Approach 1:
The patent implements a movable display unit that can dynamically adjust its position relative to the light transmitting unit along the optical axis. This dynamic positioning system allows the display to move to different depths while maintaining proper alignment through active control mechanisms, resolving the contradiction between depth variability and alignment precision
Solution Approach 2:
The patent incorporates alignment detection mechanisms that provide feedback on the relative position between the display and light transmitting unit. This feedback system enables real-time adjustment to maintain optimal alignment even when the display position changes for multi-depth expression, ensuring both depth versatility and alignment precision are achieved
2Adaptability or versatility
If a driving unit is added to change the distance between display and light transmitting unit, then the multi-depth expression is improved, but the device complexity increases
Solution Approach 1:
The patent employs flexible elastic bodies (such as elastic ribs or membrane structures) to provide the driving force for display positioning. These thin-film elastic structures replace complex mechanical drive systems, achieving multi-depth expression through elastic deformation while maintaining a simple and compact device structure
Solution Approach 2:
The patent replaces traditional mechanical driving mechanisms (motors, gears, linkages) with elastic body-based actuation. The elastic bodies directly convert applied forces into positional changes of the display unit, eliminating the need for complex mechanical transmission systems and reducing overall device complexity
3Stability of the object's composition
If elastic force is applied to prevent tilting, then the alignment stability is improved, but the force applied to the display device increases
Solution Approach 1:
The patent divides the elastic support structure into multiple segmented elastic ribs distributed across the display device. Each rib provides localized tilting prevention, distributing the total force requirement across multiple elements. This segmentation reduces the force burden on any single elastic element while collectively maintaining alignment stability
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 precise control over the alignment and depth perception of images, enhancing the multi-depth expression capabilities of 3D displays, particularly in VR and AR applications, by maintaining accurate positioning and preventing tilting, thus improving the overall image quality and user experience.
Implementation Method 1
a tilt prevention unit configured to apply an elastic force in the one direction to the one end of the display device and to another end of the display device opposite to the one end
Implementation Method 2
utilizing shape memory alloys or electroactive polymers for precise positioning
Implementation Method 3
utilizing shape memory alloys or electroactive polymers for precise positioning
Data Source
AI summary
An image display device includes a display device configured to modulate light to form an image, a light transmitting unit that transmits the image formed by the display device to eyes of a viewer and includes a focusing member, a driving unit that applies a driving force to a central position of the display device in a direction to change a distance between the display device and the light transmitting unit in the direction, a processor configured to control the display device, a connector disposed between one end of the display device and the processor, the connector connecting the display device to the processor, and a tilt prevention unit that applies an elastic force in the direction to the one end of the display device and to another end of the display device opposite to the one end.