Polygonal Optical Mechanism Vibration Stabilization
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Solution Overview
Problem
Electronic devices such as smartphones and tablets often experience blurry images or video due to shock or vibration, which affects the quality of captured images and recorded video, as existing optical mechanisms fail to effectively stabilize the optical elements during use.
Innovation Solution
An optical mechanism comprising an immovable and movable part, a drive assembly with shape memory alloy elements, a guidance assembly, and a sensing assembly, which works together to stabilize the optical element by moving it along a specific axis, using a control assembly to adjust the position and prevent unwanted movement caused by vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical element is kept fixed in the device, then the structure is simple, but shock or vibration causes blurry images and video
Solution Approach 1:
The patent implements a dynamic optical stabilization mechanism where the optical element can move relative to the housing along a guidance axis. The drive assembly actuates the movable part to counteract shock and vibration effects, transforming the static optical system into a dynamic one that actively compensates for external disturbances, thereby maintaining image quality without excessive complexity
Solution Approach 2:
The sensing assembly detects the position or movement of the movable part containing the optical element and provides feedback signals to the control assembly. This feedback mechanism enables closed-loop control where the drive assembly adjusts the optical element's position in real-time to compensate for vibrations, ensuring stable imaging while managing system complexity through intelligent control
2Reliability
If the optical element is made movable to stabilize images, then image quality improves, but the device complexity increases
Solution Approach 1:
The optical mechanism is segmented into distinct functional modules: a movable part containing the optical element, an immovable part forming the housing, a drive assembly for actuation, a guidance assembly for constrained movement, and a sensing assembly for position detection. This segmentation allows each component to perform its specific function efficiently while simplifying the overall design and maintenance of the complex system
Solution Approach 2:
The guidance assembly acts as an intermediary between the movable part and the immovable part, providing constrained movement along a specific guidance axis. This intermediary structure ensures that the optical element moves only in the desired direction to counteract vibrations, while preventing unwanted movements, thereby stabilizing images without requiring complex multi-degree-of-freedom mechanisms
3Measurement precision
If the sensing assembly is positioned closer to the first guidance element, then sensing accuracy improves, but the minimum distance constraint creates design challenges
Solution Approach 1:
The sensing assembly is strategically positioned at a specific location where the minimum distance to the first guidance element is optimized for sensing accuracy. This local optimization allows the sensing elements to be placed closer to the guidance element for better measurement precision, while the overall assembly layout is designed to accommodate this specific positioning requirement without creating excessive complexity elsewhere in the structure
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 optical mechanism effectively stabilizes the optical element, ensuring clear images and video capture by precisely controlling the movement of the optical element, thereby enhancing the quality of images and video recorded during device use.
Implementation Method 1
The first drive element and the second drive element includes a shape memory alloy material
Data Source
AI summary
An optical mechanism is provided. The optical mechanism includes an immovable part, a movable part, a drive assembly, and a guidance assembly. The movable part is connected to an optical element. The movable part is movable relative to the immovable part. The drive assembly drives the movable part to move relative to the immovable part. The guidance assembly guides the movable part to move along a first axis.