Camera Module Driving Assembly Magnetic Interference Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Camera modules face magnetic field interference issues due to the close proximity of driving assemblies, which can affect the performance of internal components and adjacent electronic components.
Innovation Solution
The camera module incorporates a driving assembly design with auxiliary magnet members and coils that minimize magnetic field interference by optimizing the arrangement and size relationships between magnet and coil components, allowing current flow along boundaries and edges to manage magnetic fields effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple driving assemblies are disposed in narrow space, then compact camera module is achieved, but magnetic field interference between assemblies increases
Solution Approach 1:
The driving magnet member is divided into multiple segments with alternating polarities along the optical axis direction. This segmentation creates localized magnetic fields that are contained within each segment, preventing magnetic field leakage into adjacent driving assemblies while maintaining the compact overall structure.
Solution Approach 2:
Different regions of the driving magnet member are assigned different magnetic polarities (N and S poles alternating along the optical axis). This local quality variation ensures that magnetic fields are generated only where needed for driving the lens module, while preventing unwanted magnetic field interference with neighboring assemblies through strategic polarity arrangement.
2Reliability
If driving coil extends along boundaries between magnet members, then magnetic field control is improved, but manufacturing complexity increases
Solution Approach 1:
The driving coil is designed to extend continuously along the boundaries between adjacent driving magnet members with alternating polarities. This merging of the coil structure with the magnet boundaries creates an integrated assembly where the coil naturally follows the magnetic field distribution pattern, simplifying the overall manufacturing process despite the complex magnetic field requirements.
Solution Approach 2:
The driving coil serves multiple functions: it generates the driving force for lens module movement, controls magnetic field distribution along the boundaries of magnet members, and provides structural integration between adjacent magnet segments. This multi-functionality reduces the need for separate components, thereby simplifying manufacturing.
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 field interference between driving assemblies and adjacent components, enabling accurate focus adjustment and optical image stabilization while allowing for a more compact module configuration.
Implementation Method 1
a driving coil including portions extending along boundaries between the driving magnet member and the auxiliary magnet members
Implementation Method 2
a driving assembly configured to drive a lens module in a direction intersecting an optical axis. The driving assembly includes: a driving magnet member; auxiliary magnet members arranged on opposing sides of the driving magnet member
Data Source
AI summary
A camera module includes a driving assembly configured to drive a lens module in a direction intersecting an optical axis. The driving assembly includes: a driving magnet member; auxiliary magnet members arranged on opposing sides of the driving magnet member and arranged to have polarities different from a polarity of the driving magnet member in a first direction; and a driving coil including portions extending along boundaries between the driving magnet member and the auxiliary magnet members.