Dual-Lens Camera Magnetic Interference Reduction
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Solution Overview
Problem
Magnetic interference between lens driving modules in dual-lens camera systems affects focus speed and accuracy, necessitating a solution to reduce this interference.
Innovation Solution
The dual-lens camera system employs asymmetrically arranged magnetic elements with different configurations, including multipole magnets and magnetic field sensing elements, along with shielding members made of magnetic conductive materials to minimize magnetic interference between adjacent modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If two lens driving modules are arranged close to each other, then device compactness is improved, but magnetic interference between modules increases
Solution Approach 1:
The patent applies asymmetry by arranging magnetic elements in different configurations on adjacent sides of the lens driving modules. Specifically, magnetic elements are positioned at different locations and orientations on the first and second modules, which disrupts the symmetry of magnetic field interactions and reduces interference between the modules while maintaining compact arrangement.
Solution Approach 2:
The patent introduces magnetic shielding elements as intermediaries between the two lens driving modules. These shielding elements are positioned strategically to block and redirect magnetic field lines, preventing direct magnetic interference between the adjacent modules while allowing the modules to remain in close proximity for compact device design.
2Measurement precision
If magnetic elements are arranged to reduce interference, then focus accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by making magnetic elements have different properties at different locations. Magnetic elements on adjacent sides are configured with different positions, orientations, and sometimes different strengths, creating localized variations in the magnetic field distribution that reduce interference while maintaining overall system functionality.
Solution Approach 2:
The patent segments the magnetic element configuration into distinct groups on different sides of the lens driving modules. By dividing the magnetic elements into separate configurable units rather than using a uniform arrangement, the system can optimize each segment to minimize interference while maintaining focus accuracy.
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 enhances focus speed and accuracy by reducing magnetic interference, maintaining weight balance, and achieving device miniaturization while ensuring effective image stabilization and autofocus functions.
Implementation Method 1
The driving board has at least one first driving coil which is configured to act with the magnetic element to generate an electromagnetic force to move the lens holder along a direction that is perpendicular to the optical axis of the lens
Implementation Method 2
The magnetic field sensing element learns the position offset amount of the magnet by detecting the magnetic field variation of the magnet
Data Source
AI summary
A dual-lens camera system is provided, including a first lens driving module and a second lens driving module each including a lens holder for receiving a lens, at least one magnetic element, and a driving board. The driving board has at least one driving coil for acting with the magnetic element to generate an electromagnetic force to move the lens holder along a direction that is perpendicular to the optical axis of the lens. On two adjacent sides parallel to each other of the first and second lens driving modules, the magnetic elements are arranged in different configurations.