Multi-Depth Display Actuator Structure for Low-Power Depth Holding
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Solution Overview
Problem
Existing 3D image display technologies face challenges in achieving precise alignment between the display and the optical system for multi-depth expression, leading to inefficiencies in power consumption during depth maintenance states.
Innovation Solution
A display apparatus with an actuator structure that includes a fixed frame, a movable frame, an actuator with elastic bridges and a variable length element, and a fixing member with side frames and protrusions, which adjusts the distance between the image forming device and the optical system to reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the actuator continuously operates to maintain depth, then the depth stability is improved, but the power consumption increases
Solution Approach 1:
The elastic bridge structure utilizes its own elastic properties to automatically maintain the distance between the display and optical system. The bridge deforms and restores without external actuation, allowing the system to self-regulate depth positioning without continuous power input, thus achieving depth stability with minimal energy consumption.
Solution Approach 2:
The actuator operates periodically rather than continuously, engaging only when depth adjustment is needed and disengaging when the desired depth is reached. This periodic operation pattern maintains depth stability through controlled interventions while minimizing overall power consumption by allowing the elastic bridge to maintain position passively between adjustments.
2Adaptability or versatility
If the actuator structure is made complex to enable precise depth adjustment, then the multi-depth expression capability is improved, but the device complexity increases
Solution Approach 1:
The actuator system is divided into modular components: the elastic bridge structure for passive position maintenance, the variable length element for active adjustment, and the fixing member for securing positions. This segmentation allows precise multi-depth expression through coordinated operation of simple, specialized components rather than a single complex mechanism.
Solution Approach 2:
The elastic bridge acts as an intermediary element between the display and optical system, providing both structural support and passive position control. This intermediary component simplifies the overall actuator structure by handling position maintenance functions that would otherwise require complex active control mechanisms, enabling multi-depth expression with reduced complexity.
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 display apparatus effectively reduces power consumption by only consuming energy when changing the depth of an image, while maintaining the depth with minimal power usage, thereby enhancing the efficiency of multi-depth expression in 3D image display technologies.
Implementation Method 1
The variable length element may include a shape memory alloy or an electroactive polymer, and the length of the variable length element may change based on an electrical control.
Implementation Method 2
The variable length element may include a shape memory alloy or an electroactive polymer, and the length of the variable length element may change based on an electrical control.
Implementation Method 3
The first elastic bridge may have elastic restoring force in a direction in which a radius of curvature of the first elastic bridge increases, and a center portion of the first elastic bridge is fixed to the fixed frame.
Implementation Method 4
The second elastic bridge may have elastic restoring force in a direction in which a radius of curvature of the second elastic bridge increases, and a center portion of the second elastic bridge is fixed to the movable frame.
Data Source
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AI summary
Provided is a display apparatus including an image forming device configured to form an image, an optical system configured to provide an output image by combining light containing an outside landscape with the image formed by the image forming device, and a driving device configured to adjust a distance between the image forming device and the optical system, wherein the driving device includes a fixed frame, a movable frame which faces the fixed frame and is movable, an actuator configured to change a distance between the fixed frame and the movable frame, and a fixing member configured to fix the distance between the fixed frame and the movable frame, wherein the image forming device is fixed to the movable frame.