Planar Image Shake Correction Module for Thin Camera Assemblies
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Solution Overview
Problem
Camera modules in portable electronic devices require image shake correction to capture clear images, but existing solutions often increase thickness and complexity, which is undesirable for miniaturization and weight reduction.
Innovation Solution
An image shake correcting module with a novel arrangement of drive balls and coils that allow horizontal and vertical movement of optical components, reducing thickness by employing drive balls on horizontal surfaces instead of a stack structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drive units and balls are arranged in a stacked structure, then image shake correction function is provided, but thickness of the camera module increases
Solution Approach 1:
The patent transitions from a vertical stacked arrangement to a horizontal planar arrangement of drive units and balls. The drive units are positioned at corners of the optical module holder, with balls moving horizontally along guide grooves to correct image shake in both horizontal and vertical directions, thereby reducing module thickness while maintaining correction functionality
Solution Approach 2:
The image shake correction function is divided into multiple independent drive units positioned at different corners of the holder. Each drive unit independently controls ball movement to correct shake in specific directions, allowing distributed horizontal arrangement that reduces overall thickness compared to a single stacked assembly
2Length of moving object
If drive units are arranged horizontally, then thickness is reduced, but structural complexity increases
Solution Approach 1:
Multiple drive units are merged into a single horizontal plane structure, sharing common elements such as the guide groove patterns and ball mechanisms. The symmetric corner positioning and identical guide groove designs allow for standardized manufacturing and simplified assembly, reducing overall structural complexity despite the horizontal arrangement
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 module effectively corrects image shake while minimizing thickness and complexity, enabling thinner and more compact camera modules in devices like smartphones and tablets.
Implementation Method 1
a first drive unit including a first drive ball, a first magnet and a first coil for primary driving of the first holder; a second drive unit including a second drive ball, a second magnet, and a second coil for secondary driving of the second holder
Data Source
AI summary
Disclosed herein is an image shake correcting module. The image shake correcting module includes an optical module, a first holder, a first drive unit, a second holder, a second drive unit, a third holder, a housing, an outer cover, and a substrate. The optical module may be mounted in an inner space of the first holder. The first drive unit may include a first drive ball, a first magnet and a first coil for primary driving of the first holder. The first holder may be mounted in an inner space of the second holder. The second drive unit may include a second drive ball, a second magnet, and a second coil for secondary driving of the second holder. The second holder may be mounted in an inner space of the third holder. The third holder may be mounted in an inner space of the housing.