Optical Element Driving Mechanism for Compact Auto Focus and OIS
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Solution Overview
Problem
The challenge in modern electronic devices with image capturing functions is to reduce the size and increase the durability of the optical element driving mechanism, which is crucial for auto focus and optical image stabilization.
Innovation Solution
An optical element driving mechanism is provided, comprising a movable portion, a fixed portion, and a driving assembly. The movable portion is connected to an optical module and can move relative to the fixed portion, driven by the driving assembly, which includes components like coils and magnetic elements to achieve precise movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the driving mechanism size is reduced, then the device becomes more compact and lightweight, but the structural complexity increases and durability may deteriorate
Solution Approach 1:
The patent implements nesting by placing the circuit board within the recess of the movable portion, and positioning the driving assembly components (coils, magnetic elements) within the fixed portion structure. This nested arrangement reduces overall volume while maintaining structural integrity and durability through proper spatial organization of components.
Solution Approach 2:
The driving mechanism is segmented into distinct movable portion and fixed portion, with the movable portion containing the optical module and circuit board, and the fixed portion containing the driving assembly. This segmentation allows independent optimization of each section for both compactness and durability.
2Volume of moving object
If the driving mechanism size is reduced, then the device becomes more compact, but the manufacturing precision requirements increase
Solution Approach 1:
The patent introduces positioning structures as intermediary elements between the movable portion and fixed portion. These positioning structures provide precise alignment and positioning without requiring extremely tight manufacturing tolerances on all components, thereby reducing overall manufacturing precision requirements while maintaining compact size.
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
This solution enables a miniaturized and lightweight optical element driving mechanism, enhancing the performance of auto focus and optical image stabilization in electronic devices.
Implementation Method 1
The driving assembly is used for driving the movable portion to move
Data Source
AI summary
An optical element driving mechanism is provided, which includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used for connecting to an optical module and is movable relative to the fixed portion. The driving assembly is used for driving the movable portion to move.