Camera Module Shield Can Design for Electromagnetic Interference
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Solution Overview
Problem
Conventional camera modules in mobile devices face challenges in reducing size while maintaining high-performance photography and incorporating electromagnetic shielding to protect internal circuit components.
Innovation Solution
A camera module design featuring a lens unit, an image sensing unit, and a conductive metallic shield can that supports the lens unit and image sensing unit, with a housing and filter unit to enhance electromagnetic shielding, utilizing threaded connections for stability and grounding for improved shielding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the camera module size is reduced to meet smaller mobile device requirements, then the compactness is improved, but the electromagnetic shielding capability deteriorates
Solution Approach 1:
The shield can is integrated to simultaneously support the lens unit and provide electromagnetic shielding for the image sensing unit. The housing interposed between the lens unit and image sensing unit serves dual purposes of structural support and electromagnetic shielding, eliminating the need for separate shielding components and reducing overall module size.
Solution Approach 2:
The shield can made of conductive metallic material performs multiple functions: it supports the lens unit, shields electromagnetic waves, and provides structural integrity. The housing similarly serves both mechanical support and electromagnetic shielding functions, allowing compact design without compromising shielding effectiveness.
2Object-affected harmful factors
If additional electromagnetic shielding components are added to protect internal components, then the shielding capability is improved, but the device complexity increases
Solution Approach 1:
The shield can is integrated to simultaneously support the lens unit and provide electromagnetic shielding for the image sensing unit. The housing interposed between the lens unit and image sensing unit serves dual purposes of structural support and electromagnetic shielding, eliminating the need for separate shielding components and reducing overall module size.
Solution Approach 2:
The shield can made of conductive metallic material performs multiple functions: it supports the lens unit, shields electromagnetic waves, and provides structural integrity. The housing similarly serves both mechanical support and electromagnetic shielding functions, allowing compact design without compromising shielding effectiveness.
3Length of moving object
If the camera module is made thinner to meet design requirements, then the compactness is improved, but the shielding effectiveness deteriorates
Solution Approach 1:
The shield can is integrated to simultaneously support the lens unit and provide electromagnetic shielding for the image sensing unit. The housing interposed between the lens unit and image sensing unit serves dual purposes of structural support and electromagnetic shielding, eliminating the need for separate shielding components and reducing overall module size.
Solution Approach 2:
The shield can made of conductive metallic material performs multiple functions: it supports the lens unit, shields electromagnetic waves, and provides structural integrity. The housing similarly serves both mechanical support and electromagnetic shielding functions, allowing compact design without compromising shielding effectiveness.
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 design achieves a thinner camera module with enhanced electromagnetic wave shielding, ensuring effective protection of internal components and improved functionality within spatial constraints.
Implementation Method 1
a shield can, which supports the lens unit and is made of a conductive metallic material so as to shield an electromagnetic wave
Implementation Method 2
an image sensing unit, which converts light received through the lens unit to an electrical signal
Data Source
AI summary
A camera module is disclosed. In accordance with an embodiment of the present invention, the camera module includes a lens unit, an image sensing unit, which converts light received through the lens unit to an electrical signal, and a shield can, which supports the lens unit and is made of a conductive metallic material so as to shield an electromagnetic wave.