Lens Assembly Miniaturization via Magnetic Restoring Structure
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Solution Overview
Problem
Existing high-performance lens modules with optical image stabilization functions are complex and difficult to miniaturize due to their structure, which complicates their integration into portable devices like smartphones.
Innovation Solution
A simplified lens assembly design utilizing memory alloy wires and a circuit board with a stabilization detection mechanism, where memory alloy wires are used to restore the lens to its original position, allowing for miniaturization and easy installation, and incorporating a magnetic restoring structure and guiding grooves for efficient movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a voice coil motor is used to drive the lens for optical image stabilization, then the lens can be restored to its original position, but the lens structure becomes complicated and miniaturization becomes difficult
Solution Approach 1:
The patent replaces the voice coil motor (electromagnetic system) with a magnetic restoring structure consisting of magnets and magnetic attraction/repulsion mechanisms. This substitution simplifies the mechanical structure while maintaining the optical image stabilization function through magnetic forces that restore the lens to its original position without requiring complex motor assemblies
Solution Approach 2:
The patent extracts and removes the voice coil motor component from the lens assembly, replacing it with a simpler magnetic restoring structure. This extraction eliminates the complex electromagnetic motor mechanism while retaining the essential function of restoring the lens to its original position through magnetic attraction and repulsion forces
2Reliability
If a voice coil motor is used for optical image stabilization, then the lens can be restored to original position, but the lens module cannot be miniaturized
Solution Approach 1:
The patent replaces the bulky voice coil motor with a compact magnetic restoring structure using magnets. This substitution dramatically reduces the volume required for optical image stabilization while maintaining the restoration function, enabling lens module miniaturization
Solution Approach 2:
The patent changes the physical parameters of the driving mechanism from electromagnetic (voice coil motor) to magnetic (magnets). This parameter change enables a more compact design with smaller dimensions, allowing the lens module to be miniaturized while preserving the optical image stabilization capability
3Device complexity
If memory alloy wires are used to restore the lens to original position, then the structure is simplified and miniaturization is achieved, but the drive force must be sufficient without bearing large strain forces
Solution Approach 1:
The patent employs a composite approach combining memory alloy wires with magnetic restoring structures. The memory alloy wires provide simplified structural support while the magnetic components generate the necessary drive force for lens restoration, distributing the force requirements across different materials and mechanisms
Solution Approach 2:
The patent introduces magnetic attraction and repulsion forces as intermediary mechanisms between the memory alloy wires and the lens. These magnetic forces act as mediators that provide the necessary drive force for lens restoration without requiring the memory alloy wires to bear large strain forces directly
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 design achieves miniaturization and simplification of the lens module while providing sufficient drive force for autofocusing and image stabilization without bearing large strain forces, enhancing the lens's stability and imaging quality.
Implementation Method 1
a first memory alloy wire having a first fixing end fixed on the first side plate, a first extension section extending from the first fixing end in a direction of the second side plate and suspended above the lens, a second fixing end fixed to one side of the lens close to the second side plate
Implementation Method 2
a restoring structure provided between the lens and the first substrate to cooperate with the first memory alloy wire and the second memory alloy wire to restore the deviated lens to an original position
Data Source
AI summary
An invention provides a lens assembly. The lens assembly includes a first substrate, a lens, a first memory alloy wire and a second memory alloy wire, wherein the lens is placed in the first substrate, and the first substrate includes a first side plate and a second side plate that are placed on both sides of the lens. The optical image stabilization lens assembly has the advantages of a simple structure for realizing optical image stabilization and being able to realize miniaturized design. In addition, an optical image stabilization method for the lens assembly is provided.