Camera Module Stopper Structure for Impact-Safe OIS Movement
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Solution Overview
Problem
Camera modules in electronic devices are prone to damage and audible collisions when subjected to sudden acceleration or impact, such as during a drop, due to uncontrolled movement of components, which can affect functionality and user experience.
Innovation Solution
Incorporation of a camera module structure with a stopper mechanism to restrict movement of components, including a first stopper protruding from the camera housing to limit movement perpendicular to the optical axis and additional carriers guided by ball guides, ensuring controlled movement during optical image stabilization and auto focus functions, and a second stopper to prevent collision during impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera module components are allowed to move freely for optical image stabilization and auto focus functions, then the camera functionality is improved, but the components may collide during sudden acceleration or impact causing damage
Solution Approach 1:
The patent applies beforehand cushioning by introducing stoppers that protrude into the camera module housing to limit the movement range of carriers before impact or collision can occur. These stoppers are positioned in advance to prevent excessive displacement of optical components during sudden acceleration or dropping events, thereby protecting the components from damage while allowing normal operational movement for image stabilization and focus functions.
2Reliability
If the carrier member moves to correct image shakes, then the image stabilization function is improved, but audible collision sounds may occur during sudden movement
Solution Approach 1:
The patent applies preliminary anti-action by using stoppers to preemptively prevent carriers from reaching positions where they would collide with housing walls during sudden acceleration or impact. The stoppers create a physical barrier that stops carrier movement before collision can occur, eliminating the source of audible collision sounds while preserving the image stabilization function through controlled electromagnetic actuation of the carriers within the limited travel range.
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 stopper mechanism effectively prevents damage and audible collisions, maintaining camera module functionality and user satisfaction by controlling component movement and reducing noise during impacts.
Implementation Method 1
The coil to which current is applied may generate electromagnetic force through electromagnetic interaction with the magnet, and the camera module may perform a shake correction function using the generated electromagnetic force.
Implementation Method 2
additional carriers guided by ball guides, ensuring controlled movement during optical image stabilization and auto focus functions
Data Source
AI summary
Various embodiments of the disclosure relate to a camera module and an electronic device including the same. According to an embodiment, there may be provided an electronic device including a camera module, comprising a camera housing; a lens assembly including at least one lens aligned along an optical axis; a first substrate including one surface where an image sensor is disposed; a carrier member configured to guide the first substrate where the image sensor is disposed or to guide the lens assembly in a direction parallel to the optical axis or a direction perpendicular to the optical axis; at least one driving member including at least one coil and at least one magnet disposed to at least partially face the at least one coil and configured to move the carrier member in the direction parallel to the optical axis and the direction perpendicular to the optical axis; and a first stopper protruding from the camera housing in a direction parallel to the optical axis and configured to restrict a movement, in the direction perpendicular to the optical axis, of the carrier member or the first substrate where the image sensor is disposed. Other various embodiments may also be applicable.