Non-magnetic Ball Receiving Surface for Image Stabilization
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Solution Overview
Problem
Existing image stabilization devices face challenges in suppressing the influence of other magnetic materials on the ball receiving surface, leading to potential attraction issues and increased power consumption due to resistive forces against magnetic forces.
Innovation Solution
The image stabilization device incorporates a movable unit with a ball housing portion and a ball receiving surface made of a non-magnetic metal material, which prevents attraction to magnets and allows for efficient control of the movable unit without applying resistive forces against magnetic forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic material is used for the ball receiving surface, then the ball can be effectively retained and positioned, but the surface experiences attraction to nearby magnets causing tilting of the imaging element and increased power consumption
Solution Approach 1:
The patent changes the magnetic parameter of the ball receiving surface by using a non-magnetic material instead of a magnetic material. This eliminates the magnetic attraction between the ball receiving surface and the magnets, thereby removing the resistive force that the drive mechanism had to overcome, which directly reduces power consumption while maintaining ball retention through alternative means.
2Reliability
If a magnetic material is used for the ball receiving surface, then the ball can be effectively retained, but the imaging element tilts due to magnetic attraction forces
Solution Approach 1:
The patent changes the magnetic parameter of the ball receiving surface to non-magnetic, which eliminates the magnetic attraction that caused the imaging element to tilt. This ensures the imaging element remains stable and properly oriented while the ball retention function is maintained through the geometric design of the ball housing portion and ball receiving surface.
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 solution effectively suppresses the influence of magnetic materials, maintains a favorable appearance by preventing tilting of the imaging element, and reduces power consumption by minimizing resistive forces, thus enhancing the overall performance and efficiency of the image stabilization device.
Implementation Method 1
a ball receiving surface provided at a bottom portion of the ball housing portion is formed of a non-magnetic metal material
Implementation Method 2
driving unit that has three voice coil motors
Data Source
AI summary
Provided are an image stabilization device and an imaging apparatus in which an influence of other magnetic materials on a ball receiving surface is suppressed. An image stabilization device includes: a movable unit that has an imaging element and a plurality of coils and is supported to be movable in a plane parallel to an imaging surface of the imaging element; a fixed unit that supports the movable unit and has a plurality of magnets, which are disposed to face the plurality of coils, and a yoke; and a ball that is disposed between the movable unit and the fixed unit, in which the movable unit has a ball housing portion configured with a hollow protruding portion that houses the ball, and a ball receiving surface provided at a bottom portion of the ball housing portion is formed of a non-magnetic metal material.