Dual Camera Module Magnet Layout for Lower Magnetic Interference
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Solution Overview
Problem
Magnetic interference occurs between two adjacently disposed camera modules in dual camera systems, affecting their performance.
Innovation Solution
The camera module design incorporates a dummy member with weaker magnetism or no magnetism, balanced masses and distances between magnets, and eccentrically positioned magnets to minimize magnetic force interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two individual camera modules are adjacently disposed to enable dual camera functionality, then the camera module can capture multiple types of images (picture or video), but magnetic force interference is mutually generated between the two camera modules
Solution Approach 1:
A non-magnetic spacer member is introduced between the first and second lens driving devices. This spacer acts as an intermediary element that physically separates the two camera modules, thereby blocking or reducing the magnetic force interference between them while still allowing the dual camera functionality to operate
Solution Approach 2:
The housing is divided into separate sections with the first lens driving device, second lens driving device, and spacer member arranged in a segmented manner. This segmentation allows independent positioning and optimization of each component to minimize magnetic interference while maintaining dual camera operation
2Object-affected harmful factors
If a spacer member is introduced to reduce magnetic interference, then magnetic force interference is minimized, but the overall size and complexity of the camera module increases
Solution Approach 1:
The spacer member is designed to serve multiple functions simultaneously: it acts as a magnetic shield to reduce interference, provides structural support for mounting the lens driving devices, and maintains the precise spacing between components. This multi-functionality reduces the need for additional separate elements, thereby limiting the increase in complexity
3Volume of moving object
If the distance between lens driving devices is reduced to minimize module size, then the overall device size is minimized, but magnetic force interference increases
Solution Approach 1:
The non-magnetic spacer member is positioned between the lens driving devices, allowing them to be placed closer together than would be possible without the spacer. The spacer mediates the interaction by blocking magnetic field lines, enabling reduced device volume while maintaining acceptable interference levels
Solution Approach 2:
The magnetic properties of the spacer material are specifically selected to have low magnetic permeability or magnetic shielding characteristics. By changing the magnetic parameter of the intervening material, the system achieves reduced interference at smaller distances between the lens driving devices
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 minimizes magnetic force interference and reduces the distance between lens driving devices, enhancing the performance and functionality of dual camera modules.
Implementation Method 1
a first magnet unit disposed on the first lateral part of the first housing, and a fifth magnet unit disposed on the fifth lateral part of the second housing, each other facing the first coil
Implementation Method 2
The first lateral part of the first housing may be disposed with a dummy member having magnetism weaker than that of the first magnet unit or having non-magnetism
Data Source
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AI summary
The present embodiment relates to a camera module comprising a first lens driving device and a second lens driving device, wherein a first lateral surface of the first lens driving device faces a second lateral surface of the second lens driving device, a first housing comprises a first lateral part corresponding to the first lateral surface of the first lens driving device and a second lateral part disposed at the opposite side of the first lateral part, a first magnet comprises a first magnet unit disposed in in the first lateral part and a second magnet unit disposed in the second lateral part, each of the first magnet unit and the second magnet unit comprises an inner surface facing a first coil, an outer surface disposed at an opposite side of the inner surface, and both lateral surfaces connecting the inner surface and the outer surface, and the distance or the length between the both lateral surfaces of the first magnet unit is shorter than the distance or the length between the both lateral surfaces of the second magnet unit.