Optical Element Drive Layout for Compact Shake Compensation
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Solution Overview
Problem
Electronic devices equipped with optical element driving mechanisms experience image or video blurriness due to shock or vibration, necessitating displacement correction and shake compensation for higher image quality.
Innovation Solution
An optical element driving mechanism with a fixed part, movable part, first and second driving assemblies, and magnetic-permeable elements, allowing for independent movement along different directions to achieve auto focus and optical image stabilization, while minimizing size and complexity through overlapping coil and magnetic element configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate driving assemblies are used for different movement directions, then the optical element can achieve precise displacement correction and shake compensation, but the device size and structural complexity increase
Solution Approach 1:
The patent combines two separate driving assemblies into a single integrated unit where first and second coils are wound on the same magnetic element. This merging approach allows the optical element to be driven in multiple directions (for both displacement correction and shake compensation) while reducing structural complexity and device size, directly resolving the contradiction between precision and complexity
2Adaptability or versatility
If multiple driving assemblies are disposed separately, then each assembly can function independently, but the overall device volume increases
Solution Approach 1:
The patent implements a nested configuration where the first coil and second coil are wound concentrically on the same magnetic element. This nesting allows multiple driving functions to coexist in a compact volume, enabling independent control of displacement correction and shake compensation while minimizing the overall mechanism size
3Volume of moving object
If integrated coil and magnetic element configurations are used, then device miniaturization is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The integration of multiple coils on a single magnetic element reduces the overall device volume while the concentric winding arrangement provides inherent alignment tolerance. This merging approach achieves miniaturization without proportionally increasing manufacturing difficulty, as the shared magnetic element serves as a common reference for both coil assemblies
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
Enhances image quality by correcting displacement and compensating for shake, achieving miniaturization and simplified assembly through integrated magnetic and coil arrangements.
Implementation Method 1
The first driving assembly includes a first magnetic element and a first coil. The second driving assembly includes a second magnetic element and a second coil. The first driving assembly and the second driving assembly drive the movable part to move relative to the fixed part
Data Source
AI summary
An optical element driving mechanism including a fixed part, a movable part, a first driving assembly, a second driving assembly, and a magnetic-permeable element is provided. The fixed part includes a bottom. The movable part holding an optical element with an optical axis is movable relative to the fixed part. The first driving assembly includes a first magnetic element and a first coil arranged along a first direction. The second driving assembly includes a second magnetic element and a second coil arranged along the first direction. The first driving assembly and the second driving assembly drive the movable part to move relative to the fixed part along a second direction and a third direction, respectively. The first direction, the second direction, and the third direction are different. When viewed in the optical axis, the first driving assembly at least partially overlaps the second driving assembly.