Camera Module Magnetic Loop Shielding for Dense Multi-Camera Layouts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Magnetic interference between camera modules in electronic devices limits space utilization and causes screen switching time differences, due to the magnetic fields generated by magnets used in image stabilization and autofocus functions.
Innovation Solution
A camera module design that forms a local closed magnetic loop using a magnet with N and S poles on its surfaces and a yoke member to shield the magnetic field, allowing adjacent camera modules to be closely packed without interfering with other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If camera modules are arranged adjacent to each other, then space utilization is improved, but magnetic interference occurs between modules
Solution Approach 1:
A magnetic shield member is introduced as an intermediary component between adjacent camera modules. This shield member, positioned between the magnets of different modules, blocks and redirects magnetic field lines, preventing magnetic interference between modules while allowing the modules to be arranged closely together for improved space utilization
Solution Approach 2:
The harmful magnetic field is extracted and redirected by the magnetic shield member. The shield member captures the magnetic field lines emanating from the magnet and redirects them through a controlled path, separating the magnetic field from sensitive components in adjacent modules and eliminating interference
2Object-affected harmful factors
If camera modules are spaced apart to reduce magnetic interference, then magnetic interference is reduced, but space utilization deteriorates
Solution Approach 1:
The magnetic shield member acts as a localized barrier that allows camera modules to maintain close proximity without requiring large spacing distances. By confining the magnetic field within the shield structure, modules can be positioned adjacent to each other while still achieving effective magnetic isolation
3Reliability
If magnets are used for image stabilization and autofocus, then image quality is improved, but magnetic field interference with other components occurs
Solution Approach 1:
The magnetic shield member extracts and contains the magnetic field generated by the magnet within a defined region. By redirecting magnetic field lines through the shield structure, the harmful magnetic field is separated from other components such as receivers, while the magnet continues to provide the necessary force for image stabilization and autofocus operations
Solution Approach 2:
The magnetic shield member serves as a mediator between the magnet and other components. It allows the magnetic field to exist for driving the lens and sensor while simultaneously protecting other components from harmful magnetic interference through field redirection and containment
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 design reduces magnetic interference, enabling efficient use of space within electronic devices and minimizing screen switching time differences between camera modules.
Implementation Method 1
The coil to which a current is applied may generate an electromagnetic force through electromagnetic interaction with the magnet
Implementation Method 2
a yoke member attached to an outer surface of the magnet
Data Source
AI summary
A camera module is provided. The camera module includes a camera housing including a base including a board on which an image sensor is disposed and a cover coupled to the base, a lens carrier at least partially disposed inside the camera housing and configured to move in a direction of an optical axis, a holder disposed inside the camera housing to be coupled to the lens carrier and configured to move in a direction perpendicular to the optical axis together with the lens carrier, a first coil disposed on the base, a second coil disposed on the lens carrier, a magnet disposed in the holder and including a lower surface facing the first coil and an inner surface facing the second coil, and a yoke member attached to an outer surface of the magnet, and each of the inner surface and the lower surface may include an N pole and an S pole.