Camera Module Handshake Correction via Ball Guide and Electromagnetic Actuation
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Solution Overview
Problem
Existing camera modules with hand-shake correction schemes are complex and costly, requiring improved structural designs for efficient image stabilization.
Innovation Solution
A camera module with a PCB-mounted image sensor, coil units, a housing member with a magnet, and a ball guide unit that allows for electromagnetic interaction to control the housing member's movement parallel to the sensor surface, enabling effective hand-shake compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional hand-shake correction scheme is implemented, then image stabilization is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple functional components into a single integrated housing member. The housing member simultaneously provides structural support, guides the actuator movement through integrated ball guides, and houses the electromagnetic components for hand-shake correction, eliminating the need for separate structural frames and guide mechanisms.
Solution Approach 2:
The housing member serves multiple functions: it acts as the structural framework, provides precise movement guidance through integrated ball guides, supports the actuator assembly, and contains the electromagnetic components. This multi-functionality reduces the overall number of parts and simplifies the device structure while maintaining hand-shake correction capability.
2Reliability
If a traditional hand-shake correction scheme is implemented, then image stabilization is achieved, but manufacturing cost increases
Solution Approach 1:
By merging multiple components into the housing member, the patent reduces the total number of parts that need to be manufactured and assembled. This integration lowers manufacturing complexity, reduces assembly steps, and decreases overall production cost while maintaining the hand-shake correction function.
Solution Approach 2:
The ball guide unit acts as an intermediary mechanism that provides precise movement guidance using simple spherical elements. This approach replaces complex mechanical guide structures with simpler ball-based guidance, reducing manufacturing cost while maintaining accurate actuator control for image stabilization.
3Manufacturing precision
If the housing member is constrained in movement, then precise image stabilization is achieved, but the electromagnetic interaction efficiency decreases
Solution Approach 1:
The patent employs dynamic constraints through ball guides that allow the housing member to move freely in the directions needed for hand-shake correction while providing guidance and stability. The ball guides enable controlled movement along specific axes while permitting electromagnetic actuation, optimizing both precision and efficiency.
Solution Approach 2:
The movement constraints are segmented into specific directional freedoms. The ball guide unit provides guidance in certain directions while allowing freedom of movement in others, enabling the housing member to respond efficiently to electromagnetic actuation while maintaining precise control over the actuator's movement path for accurate image stabilization.
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 camera module accurately compensates for hand-shake by guiding the actuator's movement parallel to the sensor surface, enhancing image stability while maintaining a simple and cost-effective structure.
Implementation Method 1
a housing member arranged at the upper surface of the PCB and provided with a magnet at a position corresponding to that of the coil unit
Data Source
AI summary
An exemplary embodiment of the present invention includes a PCB (Printed Circuit Board) mounted with an image sensor, a plurality of coil units arranged at an upper surface of the PCB, a housing member arranged at the upper surface of the PCB and provided with a magnet at a position corresponding to that of the coil unit, and a ball guide unit arranged at a surface opposite to the PCB of the housing member.