Image Stabilizer Driving Frame with Pattern Coils for Roll Correction
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Solution Overview
Problem
Conventional image stabilizers are unable to correct blurry images caused by hand-shake movements in the roll direction due to restrictions in optical axis rotation, limiting their effectiveness in stabilizing images across all yaw, pitch, and roll directions.
Innovation Solution
An image stabilizer configuration featuring a first and second yoke made of magnetic material, a driving frame movable in vertical, horizontal, and rotational directions, and a coil plate with pattern coils interacting with magnets to generate electromagnetic forces, supported by a unit that allows movement in pitch, yaw, and roll directions, enabling correction across all axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the image stabilizer restricts movement in the rotation direction of the optical axis to correct pitch/yaw smoothly, then pitch/yaw correction is improved, but roll direction correction becomes impossible
Solution Approach 1:
The patent applies the dynamics principle by transitioning from a static restriction of optical axis rotation to a dynamic system that allows controlled rotation. The driving frame is designed to be movable in multiple directions including rotation around the optical axis, enabling the system to adaptively respond to different types of hand-shake movements (pitch, yaw, and roll) rather than being constrained to only pitch and yaw corrections.
2Device complexity
If conventional image stabilizer configurations are used, then structural simplicity is maintained, but the ability to correct hand-shake in all directions is limited
Solution Approach 1:
The patent applies segmentation by dividing the stabilization system into distinct functional modules: a driving frame for multi-directional movement, a support unit for bearing the imaging unit, and pattern coils for generating electromagnetic forces. This modular segmentation allows each component to be optimized for its specific function while maintaining overall system manageability and effectiveness in correcting hand-shake across all three axes.
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
This configuration effectively stabilizes images by allowing movement in all three axes, improving image clarity by compensating for hand-shake and external disturbances, while reducing the weight and complexity of the Flexible Printed Circuit (FPC) and enhancing response performance.
Implementation Method 1
a coil plate connected to a surface of the driving frame facing the first yoke and having a plurality of pattern coils arranged at locations corresponding to the plurality of magnets, so that the driving frame is moved by a magnetic interaction between the plurality of pattern coils and the plurality of magnets
Data Source
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AI summary
An image stabilizer is provided, which compensates for an external turbulence caused by hand-shake by moving an imaging unit. The image stabilizer includes a first yoke, a second yoke, and a driving frame interposed between the first yoke and the second yoke and movable in a vertical direction, a horizontal direction, and a rotation direction with respect to an optical axis. The imaging unit is mounted in a center of the driving frame. The image stabilizer also includes a coil plate connected to a surface of the driving frame facing the first yoke and having a plurality of pattern coils arranged at locations corresponding to a plurality of magnets of the second yoke. The image stabilizer further includes a support unit disposed on a surface of the driving frame facing the second yoke and supporting the driving frame in pitch, yaw and roll directions with respect to the second yoke.