Camera Shake Correction Apparatus Magnetic Spring Layout
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Solution Overview
Problem
The existing camera shake correction apparatuses have limited design flexibility due to the restricted arrangement of magnetic components, which affects the magnetic spring's ability to correct camera shake effectively.
Innovation Solution
The apparatus employs a configuration with a movable member having a hollow coil and multiple yokes and magnets arranged to allow for increased flexibility in magnetic spring layout, including a biasing magnet that applies a magnetic suction force to yokes, enabling better alignment and reduced resonance, while maintaining balance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the magnetic body is arranged to face the magnet of the stationary member along the optical axis, then the magnetic spring can apply biasing force, but the arrangement area is limited and design flexibility is reduced
Solution Approach 1:
The patent transitions the magnetic spring arrangement from a one-dimensional arrangement along the optical axis to a two-dimensional arrangement on the surface of the movable member. By placing the magnetic body on the surface rather than requiring axial alignment, the design utilizes the available surface area more effectively, significantly increasing layout flexibility while maintaining the biasing function.
2Area of stationary object
If the size of the magnetic body surface is small, then the arrangement area is limited, but increasing the size increases the area where magnetic body can be arranged
Solution Approach 1:
The invention exploits the surface area of the movable member in the radial direction rather than being constrained by the axial dimension. This dimensional shift allows the magnetic body to be arranged on the available surface area without increasing the axial size of the magnetic component itself, thus increasing arrangement area while controlling volume.
Solution Approach 2:
The patent applies local quality by positioning the magnetic body at specific locations on the movable member surface where it can effectively interact with the stationary member's magnet. The magnetic body is strategically placed to optimize the biasing force distribution across the roller support points, ensuring effective camera shake correction while using minimal material.
3Adaptability or versatility
If multiple yokes and magnets are arranged to increase magnetic spring flexibility, then the layout flexibility improves, but the device complexity increases
Solution Approach 1:
By arranging magnetic components in a two-dimensional configuration on the movable member surface rather than stacking them axially, the patent achieves enhanced layout flexibility without proportionally increasing the number of components. The spatial distribution of yokes and magnets on the surface allows for optimized magnetic field coverage with a manageable component count.
Solution Approach 2:
The magnetic components are designed to serve multiple functions: the magnetic body provides both the biasing force through magnetic attraction and acts as a mounting surface for other components. The yokes serve both magnetic flux conduction and structural support functions, reducing the need for separate components and thereby limiting complexity growth despite enhanced layout flexibility.
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 enhances the flexibility and effectiveness of the magnetic spring layout, improving the camera shake correction performance by allowing for more optimal magnetic force distribution and reduced size, thereby stabilizing the camera system.
Implementation Method 1
a magnet used for biasing provided at the movable member, arranged opposite to the coil with respect to the second yoke (43), the magnet applying a biasing magnetic suction force
Implementation Method 2
a coil provided at a movable member and having a hollow portion in a direction orthogonal to an optical axis; a first magnet used for driving provided at the stationary member, facing the coil in a direction orthogonal to an optical axis
Data Source
AI summary
A camera shake correction apparatus (100) comprising a coil (8) provided at the movable member (2), a magnet (41) used for driving provided at the stationary member (4), facing the coil (8) in the direction orthogonal to the optical axis (C), a yoke (43) provided at the stationary member (4), facing the coil (8) and the magnet (41) used for driving in the direction of the optical axis, the yoke and the magnet used for driving constituting a magnetic circuit (6), and a magnet (11) used for biasing provided at the movable member (2), facing the yoke (43) in a non-contact manner on the opposite side of the coil (8) and the magnet (41) used for driving, the magnet (41) used for biasing applying a magnetic suction force to the yoke (43).