Dual-Lens Camera Magnetic Interference Reduction via Asymmetric Magnet Placement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Magnetic interference between lens driving modules in dual-lens camera systems affects focus speed and accuracy, as existing systems often have magnets close to each other, leading to adverse effects on lens movement.
Innovation Solution
The dual-lens camera system design places magnets on non-adjacent sides or corners of the lens driving modules, increasing the distance between them to reduce magnetic interference, and uses capsule-shaped driving coils to minimize volume and enhance focus speed and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If two lens driving modules are arranged close to each other, then the device size is reduced, but magnetic interference between the magnets adversely affects focus speed and accuracy
Solution Approach 1:
The patent applies local quality by selectively positioning magnets only on non-adjacent sides (first and third sides) of the holder, while leaving the adjacent sides (second and fourth sides) without magnets. This creates an asymmetric magnetic field distribution that eliminates magnetic interference between adjacent lens driving modules while maintaining focusing functionality. The local absence of magnets on adjacent sides directly resolves the magnetic interference problem, allowing compact device arrangement without sacrificing focus accuracy.
2Force
If magnets are placed on all sides of the holder, then the focusing force is maximized, but magnetic interference with adjacent modules increases
Solution Approach 1:
The patent converts the potential harm of magnetic interference into a beneficial configuration by strategically placing magnets only on non-adjacent sides. This asymmetric arrangement uses the magnetic force effectively for focusing while the gaps on adjacent sides prevent harmful magnetic field interactions with neighboring modules. The configuration transforms what would be a uniform magnetic field problem into a controlled, localized magnetic field solution that achieves both focusing force and interference reduction.
3Object-affected harmful factors
If the distance between magnets in adjacent modules is increased, then magnetic interference is reduced, but the device volume increases
Solution Approach 1:
The patent solves the spatial conflict by transitioning from a two-dimensional planar arrangement to a three-dimensional asymmetric configuration. By placing magnets on opposite sides (first and third sides) rather than adjacent sides, the patent utilizes the third dimension (depth/space) to achieve magnetic field separation without increasing the overall device footprint. This dimensional reorganization allows compact module arrangement while maintaining adequate magnetic field distance to prevent 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 reduces magnetic interference, improving focus speed and accuracy while allowing for device miniaturization and efficient operation of the dual-lens camera system.
Implementation Method 1
A magnetic force is generated between the first coil and the first magnet to move the first holder and the first optical element relative to the base
Implementation Method 2
A magnetic force is generated between the second coil and the second magnet to move the second holder and the second optical element relative to the base
Data Source
AI summary
An optical system is provided, including a base, a first lens driving module and a second lens driving module. The first lens driving module includes a first holder, a first magnet, and a first coil corresponding to the first magnet, wherein the first holder is used to hold a first optical element and has a first side. The second lens driving module includes a second holder, a second magnet, and a second coil corresponding to the second magnet, wherein the second holder is used to hold a second optical element and has a second side. The first side is adjacent and parallel to the second side, and no magnet is disposed on the first side or second side.