Optical Element Drive Assembly With Counterweights for Miniaturization
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Solution Overview
Problem
The challenge is to reduce the size of optical element driving mechanisms in modern electronic devices while enhancing their durability and stability, particularly in devices with image-capturing and video-recording functions.
Innovation Solution
An optical element driving mechanism is designed with a fixed portion, movable portion, and a driving assembly stabilized by weighting elements, utilizing different materials and configurations to minimize size and increase durability, including piezoelectric materials for movement and resilient elements for stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the optical element driving mechanism is miniaturized to meet modern device size requirements, then the device size is reduced, but the durability and stability of the mechanism deteriorates
Solution Approach 1:
The patent introduces weighting elements (first weighting element and second weighting element) with densities greater than the surrounding materials. These weighting elements are strategically positioned within the driving assembly to provide counterbalancing forces that stabilize the mechanism during operation, thereby maintaining durability and stability despite the overall miniaturization of the device.
Solution Approach 2:
The patent employs composite material structures, particularly in the weighting elements that combine high-density materials with structural components. The first weighting element has a density greater than the bottom material, and the second weighting element has a density greater than the driving assembly material, creating a composite structure that provides both stability and space efficiency in the miniaturized design.
2Stability of the object's composition
If weighting elements with different densities are used to stabilize the driving assembly, then the stability is improved, but the manufacturing complexity increases
Solution Approach 1:
The weighting system is divided into separate, discrete weighting elements (first weighting element and second weighting element) with different densities. Each weighting element is independently positioned within specific recesses of the driving assembly, allowing for modular manufacturing and assembly while achieving the desired stability through strategic placement of high-density materials in specific locations.
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 achieves miniaturization and improved durability, allowing for enhanced auto focus and optical image stabilization with increased energy efficiency and sensitivity in detecting the position of the movable portion.
Implementation Method 1
The first weighting element is disposed on the driving assembly for stabilizing the driving assembly
Implementation Method 2
utilizing different materials and configurations to minimize size and increase durability, including piezoelectric materials for movement
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a driving assembly, and a first weighting element. The movable portion is arranged with the fixed portion in a main axis, and the movable portion is movable relative to the fixed portion. The driving assembly is used for driving the movable portion to move relative to the fixed portion. The first weighting element is disposed on the driving assembly for stabilizing the driving assembly.