Lens Module Shielding Cover for Magnetic Interference
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Solution Overview
Problem
Magnetic interference affects the image quality of lens modules in electronic devices, necessitating a strong electromagnetic shielding capability.
Innovation Solution
A lens module design incorporating a shielding cover made of steel sheets with a cavity and openings, which electrically connects to the printed circuit board and encloses the lens and microscope base, filtering external magnetic interference while facilitating heat dissipation and structural support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shielding cover is added to block magnetic interference, then electromagnetic shielding capability is improved, but device complexity increases
Solution Approach 1:
The shielding cover is designed to perform multiple functions simultaneously: it provides electromagnetic shielding against magnetic interference, serves as a structural support component, and acts as a heat dissipation pathway. By integrating these functions into a single component, the patent avoids adding separate elements for each function, thus improving shielding capability without proportionally increasing device complexity
Solution Approach 2:
The patent combines the shielding function with the structural support function and heat dissipation function into a unified shielding cover structure. This merging of functions reduces the number of separate components needed, resolving the contradiction between achieving strong shielding and maintaining simple device structure
2Reliability
If a shielding cover is added to block magnetic interference, then electromagnetic shielding capability is improved, but manufacturing complexity increases
Solution Approach 1:
The shielding cover is designed as a separate, modular component that can be manufactured independently and then assembled to the lens module. This segmentation allows for specialized manufacturing processes optimized for the shielding cover without complicating the production of other lens module components, making the overall manufacturing process more manageable despite the added shielding functionality
3Reliability
If the shielding cover encloses the lens and microscope base, then magnetic shielding is improved, but heat dissipation may be affected
Solution Approach 1:
The shielding cover incorporates a heat dissipation hole that penetrates through the shielding structure. This creates a controlled opening in the otherwise enclosed shielding cover, allowing heat to escape while maintaining the magnetic shielding effectiveness. The selective porosity (one opening for heat) resolves the contradiction between enclosing the components for shielding and allowing heat dissipation
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 solution effectively shields magnetic interference, enhances heat dissipation, and provides structural support to the lens module, thereby improving image quality and device performance.
Implementation Method 1
a shielding cover 50... filtering external magnetic interference
Implementation Method 2
facilitating heat dissipation
Data Source
AI summary
A lens module includes a printed circuit board; a lens mounted on one side of the printed circuit board, and a shielding cover. The shielding cover comprises a cavity. A part of the printed circuit board and a part of the lens are received in the cavity of the shielding cover. The disclosure also relates to an electronic device using the lens module. The lens module can filter the magnetic interference of the external signal and facilitate heat generated by the lens module dissipate outside.