Optical Unit Multi-Axis Stabilization via Offset Magnet
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Solution Overview
Problem
Conventional camera modules experience image blur due to camera shake, as the magnetic attraction between the magnet and yoke is limited to the optical axis direction, failing to effectively counteract movements in multiple axes.
Innovation Solution
An optical unit with a movable body, a support body, and a first attraction mechanism that includes a magnet and a magnetic member, where the centers of the magnet and magnetic member are separated when viewed from a specific direction, generating attraction force in multiple directions to stabilize the optical element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the centers of the magnet and yoke are arranged to overlap each other, then the structure is simple and easy to manufacture, but the attractive force is generated only in the optical axis direction, limiting image stabilization to one direction
Solution Approach 1:
The patent applies dimensionality change by separating the centers of the magnet and yoke in the optical axis direction while maintaining their overlap when viewed from the optical axis. This creates attraction forces in multiple directions (both optical axis direction and directions intersecting the optical axis), enabling two-axis image stabilization without significantly increasing structural complexity
Solution Approach 2:
The patent changes the spatial parameter of magnet-yoke arrangement by adjusting their relative positions along the optical axis. By controlling the degree of separation in the optical axis direction while maintaining lateral overlap, the system achieves multi-directional attraction forces that enable comprehensive image stabilization
2Adaptability or versatility
If the magnet and yoke are arranged with separated centers when viewed from the optical axis direction, then multi-directional attraction force is generated for better image stabilization, but the device complexity increases
Solution Approach 1:
The patent achieves multi-functionality by designing the magnet and yoke arrangement to generate attraction forces in multiple directions simultaneously. The same magnet-yoke pair provides both optical axis direction stabilization and lateral direction stabilization, eliminating the need for separate mechanisms for each axis
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 image stabilization by allowing the optical element to be swung about two axes, improving correction accuracy and preventing image blur in multiple directions.
Implementation Method 1
a first attraction mechanism that generates attraction force in the movable body between the movable body and the support body. The first attraction mechanism includes a first attraction magnet and a first attraction magnetic member
Data Source
AI summary
An optical unit includes a movable body including an optical element, a support body swingably supporting the movable body, and a suction mechanism. The optical element reflects light traveling in a first direction to an intersecting second direction. The suction mechanism generates suction force in the movable body between the movable body and the support body, and includes a magnet and a magnetic member. One of the magnet and the magnetic member is in the movable body, while the other is in the support body. The magnet and the magnetic member overlap each other when viewed from a predetermined direction, which is one of the first direction, the second direction, and a third direction. The third direction intersects the first and second directions. When viewed from the predetermined direction, a center of the magnet and a center of the magnetic member are separated from each other.