Camera Module Shock Absorber Buffer Design
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Solution Overview
Problem
Camera modules in mobile devices are vulnerable to damage from shocks due to their miniaturized and lightweight designs, which can lead to deformation and damage of internal components like the VCM during external impacts.
Innovation Solution
A camera module design featuring a shield can with a through hole and shock absorbers of varying heights connected in a stair shape around the circumference, creating a buffer space between the shield can and the auto focusing unit to absorb shocks and prevent direct transmission of force to the VCM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the camera module is miniaturized and lightweighted, then the camera module becomes more suitable for mobile devices, but the vulnerability to shock damage increases
Solution Approach 1:
The patent applies beforehand cushioning by installing a shock absorber at the upper circumference of the shield can before shock occurs. The shock absorber creates a buffer space between the shield can and the auto focusing unit, which absorbs shock energy through elastic deformation when external shocks occur, preventing direct transmission of shock to the VCM and other internal components.
Solution Approach 2:
The shock absorber acts as an intermediary element between the shield can and the auto focusing unit. When shock occurs, the shock absorber deforms elastically to absorb energy, serving as a mediator that protects the VCM from direct shock impact while allowing the camera module to maintain its miniaturized design.
2Strength
If the shield can is made rigid to protect internal components, then structural strength improves, but shock transmission to internal components increases
Solution Approach 1:
The shock absorber is pre-installed at the upper circumference of the shield can to provide cushioning before shock occurs. When external shocks occur, the shock absorber deforms elastically to absorb shock energy, preventing rigid transmission of shock to the VCM and other internal components while maintaining the shield can's structural strength.
Solution Approach 2:
The shock absorber changes its physical state from a rigid structure to an elastic deformed state when shock occurs. This parameter change allows the shock absorber to absorb shock energy through elastic deformation, reducing shock transmission to internal components while the shield can maintains its rigid protective function.
3Reliability
If the buffer space is increased to reduce shock transmission, then shock absorption improves, but the camera module volume increases
Solution Approach 1:
Instead of increasing the overall buffer space throughout the camera module, the shock absorber is localized at the upper circumference of the shield can where shocks most frequently occur. This local quality approach provides effective shock absorption at the critical impact zone without significantly increasing the total camera module volume.
Solution Approach 2:
The shock absorber utilizes the circumferential dimension of the shield can by being installed at the upper circumference. This dimensional approach allows the shock absorber to create an effective buffer space around the periphery where shocks occur, providing shock protection without increasing the internal volume available for optical components.
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 effectively minimizes shock transmission to the VCM by providing a buffer space, enhancing the camera module's ability to absorb external shocks and reduce deformation, thus protecting internal components.
Implementation Method 1
a shock absorber installed at an upper circumference of the shield can to form a buffer space between the shield can and the auto focusing unit
Data Source
AI summary
The present invention relates to a camera module, the camera module including a PCB (Printed Circuit Board) mounted with an image sensor, an auto focusing unit installed thereinside with at least one lens and fixed at an upper side of the PCB for auto focusing a focus of an image transmitted to the image sensor, a shield can formed with a through hole at a position corresponding to that of the lens and so formed as to wrap the PCB and the auto focusing unit as well, and a shock absorber installed at an upper circumference of the shield can to form a buffer space between the shield can and the auto focusing unit.