Rolling Magnetic Driving Unit for Optical Shake Correction
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Solution Overview
Problem
The lack of standardization in rolling magnetic driving mechanisms for optical units with shake correction functions that require both swinging and rotating capabilities has led to prolonged development periods and increased costs, as separate units are typically developed for each functionality.
Innovation Solution
A rolling magnetic driving unit that includes a rotation-supporting mechanism, a fixation member, and a rolling magnetic driving mechanism with a coil and magnet opposed in the axis direction, allowing for both swinging and rotating capabilities, and an angular-position-recovering mechanism using a magnetized and polarized magnet and angular-position-recovering magnetic member to recover to a reference position without power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate rolling magnetic driving mechanisms are developed for optical units requiring both swinging and rotating capabilities, then functional completeness is achieved, but development time and costs increase
Solution Approach 1:
The patent applies universality by designing a rolling magnetic driving mechanism that can serve both swinging and rotating functions in optical units. The mechanism uses a standardized coil and magnet arrangement that can be configured for different运动 modes, allowing one mechanism design to fulfill multiple functional requirements and eliminating the need for separate development for each function.
Solution Approach 2:
The patent applies segmentation by dividing the magnetic driving mechanism into modular components - specifically the coil assembly and magnet assembly - that can be independently designed and then combined. This modular approach allows the same basic components to be configured for different functions (swinging or rotating) without requiring complete redesign, thus reducing development time while maintaining functional versatility.
2Adaptability or versatility
If separate rolling magnetic driving mechanisms are developed for different optical unit configurations, then functional requirements are met, but development costs increase
Solution Approach 1:
The patent implements universality by creating a standardized rolling magnetic driving mechanism with fixed coil and magnet configurations that can satisfy multiple functional requirements. This universal design allows manufacturers to use the same mechanism for different optical unit applications, significantly reducing development costs while meeting diverse functional needs through configuration adjustments rather than complete redesign.
Solution Approach 2:
The patent applies parameter changes by adjusting the configuration parameters of the magnetic driving mechanism - such as the positioning of coils and magnets, their orientations, and operational parameters - to meet different functional requirements without changing the fundamental mechanism design. This allows cost-effective adaptation to various applications through parameter optimization rather than developing entirely separate mechanisms.
3Force
If coil and magnet are arranged in the rolling magnetic driving mechanism, then driving force is generated, but magnetic field distribution and torque linearity must be optimized
Solution Approach 1:
The patent applies local quality by optimizing the magnetic field distribution in specific regions around the coil and magnet assemblies. The design carefully configures the local magnetic environment through strategic placement of magnetic components and shaping of magnetic paths to ensure uniform torque generation and linear magnetic field distribution, thereby achieving both strong driving force and precise magnetic field control.
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
Enables shared use of the rolling magnetic driving mechanism for optical units that require both swinging and rotating functions, reducing size and complexity while improving torque and linearity of magnetic attractive force, and allowing for easier handling and adjustment of the optical module's position.
Implementation Method 1
a rolling magnetic driving mechanism configured to cause the rotation seat to rotate, wherein the rolling magnetic driving mechanism includes a coil that is fixed to either one of the rotation seat and the fixation member and a magnet that is fixed to the other one of the rotation seat and the fixation member and is opposed to the coil in a direction of the axis
Implementation Method 2
an angular-position-recovering mechanism using a magnetized and polarized magnet and angular-position-recovering magnetic member to recover to a reference position without power consumption
Data Source
AI summary
To provide a rolling magnetic driving unit that can be employed for both of an optical unit with shake correction function that causes an optical module to swing and rotate and an optical unit with shake correction function that causes the optical module to rotate, a second unit (i.e., a rolling magnetic driving unit) includes: a rotation seat; and a fixation member that supports the rotation seat via a bearing mechanism. The rotation seat and the bearing mechanism configure a rotation-supporting mechanism. The rotation-supporting mechanism supports a holder, which supports the optical module such that the optical module is able to swing, such the holder is able to rotate on the axis. Furthermore, the second unit includes a rolling magnetic driving mechanism, which includes a rolling driving coil that is held by the rotation seat and a rolling driving magnet that is held by the fixation member.