Dual Stage Electromagnetic Actuator for Thin Mobile Imaging
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Solution Overview
Problem
Existing imaging apparatuses in mobile devices face challenges in achieving improved optical characteristics while maintaining a thin form factor, as they require compact designs that often compromise on feature implementation due to space constraints.
Innovation Solution
A dual-stage electromagnetic actuator is introduced, comprising ferromagnetic elements and an electromagnetic element with slider elements, allowing for controlled movement and a flat design that enables better optical characteristics and more room for additional device features by utilizing a telescopic action and a returning spring for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a compact design is used to maintain a thin form factor, then the device thickness is reduced, but the optical characteristics deteriorate
Solution Approach 1:
The actuator is divided into two functional stages: a first electromagnetic actuator for fine positioning and a second electromagnetic actuator for coarse positioning. This segmentation allows each stage to be optimized for its specific function, enabling the overall system to achieve better optical characteristics while maintaining a thin form factor through coordinated operation of the two stages.
2Reliability
If additional features are implemented to improve imaging capabilities, then the optical performance is improved, but the device complexity increases
Solution Approach 1:
The dual-stage electromagnetic actuator structure serves multiple functions: the first actuator provides fine positioning for precise focus, the second actuator provides coarse positioning for rapid adjustment, and together they enable both autofocus and optical image stabilization functions. This multi-functionality reduces the need for separate mechanisms, thereby managing device complexity while improving imaging capabilities.
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 allows for improved optical performance in thin devices, enabling better imaging capabilities and flexibility in device design, suitable for various form factors including smartphones, tablets, and digital cameras.
Implementation Method 1
An electric current driven through the electromagnetic element causes a magnetic field of the electromagnetic element to interact with the magnetic fields of the two ferromagnetic elements
Implementation Method 2
In one embodiment the returning action is effected with a returning spring
Data Source
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AI summary
An electromagnetic actuator comprises a dual stage action, wherein the actuator comprises an electromagnetic element between two ferromagnetic elements. An electric current driven through the electromagnetic element causes a magnetic field of the electromagnetic element to interact with the magnetic fields of the two ferromagnetic elements.