Magnetic Shielding in Dual-Lens Camera Modules
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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 such interference.
Innovation Solution
Incorporating a shielding member made of magnetic-permeable material between the driving assembly and the casing, strategically positioned to minimize overlap with magnetic elements, thereby reducing magnetic interference and enhancing lens 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 occurs causing focus speed and accuracy to deteriorate
Solution Approach 1:
A magnetic shielding member made of magnetic-permeable material is introduced as an intermediary element between the two lens driving modules. This shielding member selectively blocks magnetic field lines from the first lens driving module, preventing them from interfering with the second lens driving module's focus operation, thereby maintaining both compact arrangement and reliable focus performance
Solution Approach 2:
The magnetic shielding member is strategically positioned only on specific sides (first and third sides) of the lens driving module rather than uniformly around all sides. This localized shielding approach blocks magnetic interference in the critical directions where adjacent modules are positioned, while avoiding unnecessary shielding in other directions, thus reducing overall device volume 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
The implementation of shielding members effectively reduces magnetic interference between lens driving modules, improving focus speed and accuracy in dual-lens camera systems.
Implementation Method 1
The shielding member has a magnetic-permeable material, disposed on a first side of the casing, wherein the shielding member is not disposed on a second side of the casing
Implementation Method 2
The plurality of magnetic elements include a first magnetic element and a second magnetic element... the first magnetic element has a first magnetic pole group disposed along the first direction, and the first magnetic pole group and the second magnetic pole group are arranged along the main axis
Data Source
AI summary
A multiple-lens camera system is provided, including a first lens driving module, a second lens driving module, and a shielding member. The first and second lens driving modules respectively include a frame, a lens holder movably disposed in the frame for holding a lens, a magnetic element disposed on a side of the lens holder and a driving board, wherein the driving board has a first coil corresponding to the magnetic element, to generate a magnetic force for moving the lens holder and the lens relative to the driving board. The shielding member is disposed in the first lens driving module and between the two magnetic elements of the first and second lens driving modules which are adjacent to each other, to suppress magnetic interference between the first and second lens driving modules.