Lens Module With Shared Magnet Drive for Compact AF and OIS
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Solution Overview
Problem
Existing lens modules with auto focus (AF) and optical image stabilizer (OIS) functions require multiple parts, leading to increased volume, weight, and reduced accuracy and stability, affecting the performance of electronic devices.
Innovation Solution
A lens module design that integrates anti-shake and focus assemblies with a shared magnet assembly, reducing the number of parts and enabling compact structure through shared coils and magnets, with flexible structures and guide mechanisms for precise movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate coils and magnets are used for AF and OIS functions, then the lens module can achieve focus and anti-shaking functions, but the number of parts increases leading to increased volume and weight
Solution Approach 1:
The patent combines separate coils and magnets into an integrated drive assembly where a single magnet assembly cooperates with both anti-shake coils and focus coils. This merging eliminates redundant parts while maintaining both OIS and AF functions, directly resolving the contradiction between functional reliability and module volume.
Solution Approach 2:
The magnet assembly serves multiple functions by cooperating with different coil assemblies for both anti-shake and focus operations. This multi-functional design allows a single component to replace multiple separate components, reducing the overall number of parts and lens module volume while preserving all required functions.
2Reliability
If multiple coils and magnets are used in the lens module, then AF and OIS functions are achieved, but the weight of the lens module increases
Solution Approach 1:
The patent merges multiple heavy components (separate coils and magnets) into a single integrated drive assembly with one magnet assembly. This consolidation significantly reduces the total weight of movable parts while maintaining the ability to perform both focus and anti-shake functions through coordinated coil operations.
3Reliability
If multiple parts are installed on movable members, then AF and OIS functions are achieved, but the mass of movable members increases affecting accuracy and stability
Solution Approach 1:
The patent consolidates multiple parts into fewer integrated components in the drive assembly. This reduction in part count decreases the total mass of movable members, thereby improving the accuracy and stability of focus and stabilization operations as fewer and lighter components need to be precisely positioned and controlled.
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 integrated design enhances the accuracy and stability of AF and OIS functions, reducing the overall size and weight of the lens module while improving performance.
Implementation Method 1
the at least one anti-shake coil is connected to the lens barrel and configured to drive the lens barrel to move relative to the support frame
Implementation Method 2
each of the at least one focus coil is connected to the base structure and the at least one focus coil is configured to drive the support frame to move relative to the base structure
Data Source
AI summary
The disclosure relates to a lens module and an electronic device. The lens module includes a frame mechanism and an adjusting mechanism. The anti-shake assembly includes at least one anti-shake coil and at least one anti-shake reset member. The focus assembly includes at least one focus coil and at least one focus reset member. In the lens module of the present embodiment, by arranging the magnet assembly to cooperate with the anti-shake assembly and the focus assembly, the at least one anti-shake coil and the at least one focus coil can share a same magnet assembly to realize the optical anti-shake and auto-focus functions of the lens module, thereby enabling the lens module to have a more compact structure.