Image Shake Correction Device with Adjustable Magnetic Force Generators
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image shake correction devices face reduced position detection accuracy due to the proximity of position detectors and drive coils, which are affected by the magnetic field of the magnet, and manufacturing errors can cause the imager's light receiving surface and circuit board to be non-parallel, leading to uneven distances between position detectors and magnets.
Innovation Solution
An image shake correction device with a movable member, a support member, a circuit board, position detectors on the rear surface of the circuit board, magnetic force generators on the support member, and adjustment members to ensure uniform distances between the magnetic force generators and the support member, allowing for accurate position detection and correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the position detector is arranged close to the drive coil on the flat surface portion of the movable member, then the device structure is simplified, but the position detection accuracy is reduced due to magnetic field interference
Solution Approach 1:
The position detector is moved from the flat surface (2D plane) to the rear surface of the circuit board, utilizing the third dimension (depth/thickness) to resolve the spatial conflict between the position detector and drive coil, thereby eliminating magnetic field interference while maintaining structural simplicity
2Measurement precision
If the position detector is provided on the rear surface of the circuit board to ensure sufficient distance from the drive coil, then the position detection accuracy is improved, but the distances between position detectors and magnets become non-uniform due to manufacturing errors in imager mounting
Solution Approach 1:
The support member is divided into multiple adjustable sections, each capable of independent position adjustment. This segmentation allows each position detector-magnet pair to be individually calibrated to achieve uniform distances despite variations in circuit board mounting angles caused by manufacturing errors
Solution Approach 2:
The support member is designed with adjustable mechanisms that enable dynamic repositioning of the magnets relative to the position detectors. This dynamic adjustment capability compensates for manufacturing tolerances and ensures uniform distances between position detectors and magnets after assembly
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
Improves image shake correction accuracy by enhancing position detection precision and maintaining uniform distances between position detectors and magnets, even in cases of manufacturing errors, thereby stabilizing image shake correction.
Implementation Method 1
magnetic force generators that face the plurality of position detectors respectively and are fixed to the support member
Implementation Method 2
a plurality of position detectors that is fixed to a rear surface of the circuit board opposite to a surface of the circuit board on which the imager is mounted to detect a position of the movable member
Data Source
AI summary
An image shake correction device includes: a movable member; a support member that supports the movable member to be movable in a plurality of directions along a flat surface; a circuit board that is fixed to the movable member; an imager that is mounted on the circuit board; a plurality of position detectors that is fixed to a rear surface of the circuit board opposite to a surface of the circuit board on which the imager is mounted to detect a position of the movable member in a movement direction of the movable member; magnetic force generators that face the plurality of position detectors respectively and are fixed to the support member; and adjustment members that adjust distances between the magnetic force generators and the support member.