Piezoelectric Optical Element Drive Mechanism for Vibration Stabilization
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Solution Overview
Problem
Electronic devices, such as smartphones and tablets, experience image and video blurriness due to shocks or vibrations, necessitating a higher quality optical element drive mechanism to stabilize the optical elements during use.
Innovation Solution
An optical element drive mechanism comprising a piezoelectric element, resilient element, transmission element, contact element, and compression element, along with a guidance assembly and dust-proof element, which work together to stabilize the optical element by generating a driving force and guiding its movement, while preventing dust interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a drive mechanism is added to stabilize the optical element, then image quality is improved, but device complexity increases
Solution Approach 1:
The drive mechanism is divided into distinct functional components: a piezoelectric element for generating driving force, a transmission element for force transmission, and a holder for positioning the optical element. This segmentation allows each component to be optimized independently while maintaining overall system reliability for image stabilization.
Solution Approach 2:
A transmission element is introduced as an intermediary between the piezoelectric element and the holder. This transmission element efficiently transfers the driving force from the piezoelectric element to the holder, enabling precise optical element positioning while keeping the overall device structure manageable.
2Manufacturing precision
If materials with different Young's modulus are used for holder and compression element, then manufacturing precision is improved, but ease of manufacture decreases
Solution Approach 1:
Different materials with appropriate Young's modulus values are selected for specific components: the holder uses a material with lower Young's modulus for flexibility and positioning accuracy, while the compression element uses a material with higher Young's modulus for structural stability. This local quality differentiation improves manufacturing precision for each component's specific function.
Solution Approach 2:
The system employs composite material construction with the holder and compression element made from different materials optimized for their respective functions. This composite approach allows each material to contribute its optimal properties, achieving superior overall manufacturing precision despite the increased material selection complexity.
3Reliability
If dust-proof element is added to prevent dust interference, then reliability is improved, but device complexity increases
Solution Approach 1:
The dust-proof element is designed as a separate, extractable component that can be independently added to the drive mechanism. This extraction approach allows the dust protection function to be implemented without fundamentally redesigning the core drive mechanism, thus improving reliability while minimizing the increase in overall device complexity.
Solution Approach 2:
The dust-proof element serves multiple functions: it prevents dust from entering the drive mechanism, protects the optical element from dust contamination, and maintains a clean environment for the piezoelectric element. This multi-functionality justifies the added component by providing several reliability benefits simultaneously.
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 mechanism enhances image quality by achieving stable and accurate movement of the optical element, reducing blurriness caused by vibrations and maintaining cleanliness to prevent dust-related issues.
Implementation Method 1
The piezoelectric element includes a piezoelectric material. The piezoelectric element generates a driving force.
Implementation Method 2
The resilient element disposed on the piezoelectric element.
Implementation Method 3
The dust-proof element includes an adhesive material.
Data Source
AI summary
An optical element drive mechanism is provided. The optical element drive mechanism includes an immovable part, a movable part, and a drive assembly. The movable part is connected to an optical element that includes an optical axis. The movable part is movable relative to the immovable part. The drive assembly drives the movable part to move relative to the immovable part.