Camera Module OIS Stopper for Vibration Impact Control
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Solution Overview
Problem
The increasing sophistication and weight of camera modules in portable electronic devices lead to deformation issues such as stamping or indentations due to vibration, affecting the performance of auto focus, image stabilization, and zoom functions.
Innovation Solution
A camera module design incorporating an OIS stopper with inward and outward protrusions and accommodating grooves that limit the movement range of the lens holder, preventing collisions and mitigating impact between components during optical image stabilization operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the camera module sophistication and lens transferring unit weight increase to improve imaging performance, then image quality and functionality are enhanced, but deformation such as stamping or indentations occur due to vibration, deteriorating camera performance
Solution Approach 1:
The patent applies beforehand cushioning by introducing a cushioning member between the lens transferring unit and the housing before vibration impacts occur. This cushioning member absorbs and mitigates vibration impacts, preventing deformation such as stamping or indentations on the lens transferring unit, thereby maintaining both imaging performance and reliability
2Adaptability or versatility
If the lens transferring unit weight increases to enable auto focus and image stabilization functions, then functional capabilities are improved, but impact between components increases causing deformation
Solution Approach 1:
The patent introduces a cushioning member as an intermediary element between the lens transferring unit and the housing. This intermediary absorbs and reduces impact forces generated during auto focus and image stabilization operations, preventing harmful deformation while maintaining the functional capabilities enabled by the heavier lens transferring unit
Data Source
AI summary
A camera module includes a housing having an interior space; an Auto Focusing (AF) carrier disposed in the interior space of the housing and housing a lens barrel; a lens holder to which the lens barrel is fixed and accommodated in the AF carrier; an Optical Image Stabilization (OIS) driver configured to drive the lens holder to move in a first direction or a second direction perpendicular to an optical-axis, wherein the first direction and the second direction are perpendicular to each other within the AF carrier; and an OIS stopper including an inward protrusion protruding from one inner surface of the housing in the first direction towards the lens holder, and an outward protrusion protruding from one outer surface of the lens holder towards the one inner surface of the housing and opposite the inward protrusion in the second direction.