Camera Module Protecting Cover for Impact and Dust Protection
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Solution Overview
Problem
Camera modules are prone to decreased imaging quality due to mechanical stress, such as impact, which can cause the focusing motor to short-circuit or separate, and dust ingress through gaps in the lens tube connections, leading to issues with the glue between the lens holder and mirror holder breaking and forming fragments that obstruct the lens.
Innovation Solution
A camera module design featuring a lens tube with screw threads and a protecting cover that includes a cushioning and dustproofing portion made of elastic materials, such as rubber or foam, to absorb impact and prevent dust entry, ensuring the lens module remains secure and functional.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the lens tube and lens are connected by a screw thread, then the lens module can be securely mounted, but a small gap may be present allowing dust and debris to enter the camera module
Solution Approach 1:
A protecting cover is introduced as an intermediary component between the lens tube and the environment. This cover seals the gap created by the screw thread connection, preventing dust and debris from entering while allowing the screw thread mounting to remain in place for secure attachment
2Ease of manufacture
If standard glue is used between the lens holder and mirror holder, then the components can be assembled, but the glue cannot resist impact forces and breaks forming fragments that obstruct the lens
Solution Approach 1:
A protecting cover with cushioning properties is installed beforehand to absorb and dissipate impact forces before they reach the glued joints. This pre-cushioning prevents the glue from breaking under impact stress, eliminating the formation of obstructive fragments while maintaining simple assembly procedures
3Device complexity
If the camera module uses conventional protective structures, then basic protection is provided, but the focusing motor can still short-circuit, open up, or separate from other internal parts under sharp impact
Solution Approach 1:
The protecting cover is designed as a flexible structure that can deform under impact forces to absorb energy and protect internal components. This flexible shell approach provides comprehensive protection against motor short-circuiting, opening, and separation while maintaining relatively simple device structure
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 enhances the camera module's durability and imaging quality by preventing short-circuiting, separation, and dust ingress, thereby increasing its service life and maintaining image quality even under impact forces.
Implementation Method 1
a cushioning and dustproofing portion (72, 82) made of an elastic material, such as rubber or foam
Implementation Method 2
The cushioning portion (71, 81) is made of elastic materials, such as rubber
Data Source
AI summary
A camera module which is sealed and given protection against damage from forcible impacts includes a lens module, a lens tube, and a protecting cover. The lens module has lens screw threads on its outer wall. The lens tube includes a lens receiving space, the lens module is received in the lens receiving space, lens tube screw threads are formed on an inner wall of the lens receiving space. The lens tube screw threads match the lens screw threads. The protecting cover includes a cushioning portion and a dustproofing portion. The cushioning portion and the dustproofing portion are attached to and cover the outer exposed surfaces of the lens tube. The dustproofing portion covers the lens thread and the lens tube screw threads.