Voice Coil Motor Array with Non-Magnetic Spacers
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Solution Overview
Problem
Current voice coil motor array modules face challenges in minimizing magnetic attraction and repulsion between closely arranged magnetic components during assembly, which interferes with the independent operation of multiple lenses for high-resolution and low-parallax image capture.
Innovation Solution
A voice coil motor array module design featuring a carrier with voice coil motors arranged side by side, where each motor has magnetic components with the same poles facing each other, allowing for controlled displacement of lenses without magnetic interference by positioning them at suitable distances and angles to avoid magnetic attraction and repulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple voice coil motors are arranged closely together to drive multiple lenses, then image resolution and quality are improved, but magnetic attraction and repulsion between magnetic components interfere with independent operation
Solution Approach 1:
A non-magnetic spacer component is introduced between adjacent magnetic components of different voice coil motors. This spacer acts as a physical barrier that blocks magnetic field lines, preventing magnetic attraction and repulsion between adjacent motors while allowing the motors to be arranged closely together for high-resolution multi-lens operation.
Solution Approach 2:
The magnetic interference problem is isolated and addressed by extracting the harmful magnetic interaction from the system. By placing non-magnetic spacers between magnetic components, the harmful magnetic fields are effectively blocked and removed from the interaction zone, allowing independent operation of each voice coil motor.
2Reliability
If voice coil motors are arranged side by side for multi-lens operation, then image quality with small parallax is achieved, but magnetic components interfere with each other during assembly
Solution Approach 1:
Non-magnetic spacers are placed between adjacent magnetic components to serve as mediators that prevent magnetic interference. This allows multiple voice coil motors to be assembled side by side without magnetic attraction or repulsion affecting the assembly process, enabling reliable multi-lens operation with small parallax.
Solution Approach 2:
The assembly structure is segmented into modular units where each voice coil motor with its magnetic components is separated by non-magnetic spacers. This segmentation isolates each motor's magnetic field, preventing interference during assembly and enabling straightforward manufacturing of multi-lens systems.
3Volume of moving object
If magnetic components are positioned close together to reduce module size, then compactness is improved, but magnetic attraction and repulsion increase
Solution Approach 1:
Non-magnetic spacers are positioned between adjacent magnetic components to block magnetic field lines. This allows the voice coil motors to be arranged in a compact configuration with reduced module size while the spacers prevent magnetic attraction and repulsion forces from increasing, maintaining independent motor operation.
Solution Approach 2:
Thin non-magnetic spacer structures are used to separate magnetic components. These thin film-like spacers effectively block magnetic field penetration while occupying minimal space, enabling compact module design without increasing magnetic force interference.
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 configuration enables independent and precise lens movement for high-resolution image capture with minimal parallax, enhancing image quality by minimizing assembly inconveniences and magnetic interference.
Implementation Method 1
When the coil is energized, the coil interacts with the magnetic components to drive the lens holder and move the lens to focus shooting
Data Source
AI summary
A voice coil motor array module includes a carrier, and a plurality of voice coil motors disposed on the carrier and arranged side by side in at least one row along an arrangement direction. Each voice coil motor includes a lens holder having a holder body and a coil wound around the holder body, and two magnetic components respectively disposed on two opposite sides of the holder body and having the same magnetic poles facing each other. When the coil is energized, the coil interacts with the magnetic components to drive displacement of the holder body along a direction parallel to a normal direction of a plane of the arrangement direction.