Lens Driving Assembly Layout to Limit Magnetic Sensor Interference
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Solution Overview
Problem
Electronic devices with lens modules often experience image blurriness due to shaking during camera use, necessitating improved optical image stabilization.
Innovation Solution
An optical component driving mechanism utilizing a magnetically permeable component and a coil to drive a movable portion relative to a fixed portion, with a sensing component and circuit members for precise movement and stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a coil and magnetically permeable component are used to drive the movable portion, then driving accuracy for optical image stabilization is improved, but magnetic interference may affect sensing components
Solution Approach 1:
A magnetic shield component is introduced as an intermediary between the driving assembly (coil and magnetically permeable component) and the sensing component. This magnetic shield selectively blocks magnetic field lines, preventing magnetic interference from reaching the sensing component while allowing the driving assembly to function normally. The magnetic shield acts as a mediator that separates the beneficial magnetic driving force from the harmful magnetic interference.
Solution Approach 2:
The internal structure of the lens module is segmented into distinct functional zones: a driving zone containing the coil and magnetically permeable component, and a sensing zone containing the sensing component. The magnetic shield creates a physical and magnetic field separation between these zones, allowing each component to operate independently without interference. This spatial segmentation resolves the contradiction by isolating the sensing component from magnetic interference while preserving driving functionality.
2Measurement precision
If circuit members are disposed on the movable portion to enable precise control, then driving control is improved, but the structure becomes more complex
Solution Approach 1:
Multiple circuit members (first circuit member and second circuit member) are merged and disposed on the same movable portion, integrating the electrical connection functions into a unified structure. This consolidation reduces the number of separate components and simplifies the overall structure while maintaining precise control capabilities. The circuit members are strategically positioned to minimize interference and optimize electrical connectivity for both the driving and sensing functions.
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
Enhances optical image stabilization and auto-focusing capabilities by minimizing magnetic interference and improving driving accuracy, allowing for better image quality.
Implementation Method 1
The driving assembly includes a coil and a magnetically permeable component. The driving assembly is configured to drive the movable portion to move relative to the fixed portion
Implementation Method 2
the magnetically permeable component and the first portion of the first circuit member are disposed on the side portion of the movable portion
Data Source
AI summary
An optical component driving mechanism is provided. The optical component driving mechanism includes a movable portion, a fixed portion, a driving assembly, and a first circuit member. The movable portion is connected to an optical component. The movable portion includes a side portion. The optical component has an optical axis. The movable portion is movable relative to the fixed portion. The driving assembly includes a coil and a magnetically permeable component. The driving assembly is configured to drive the movable portion to move relative to the fixed portion. The first circuit member is configured to transmit electrical signals. The first circuit member includes a first portion. The first portion is disposed between the coil and the magnetically permeable component. The coil, the magnetically permeable component, and the first portion of the first circuit member are disposed on the side portion of the movable portion.