Electromagnetic Driving Module for Lens Positioning
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Solution Overview
Problem
Conventional driving modules for electronic devices, such as those used for auto-focus and auto-zoom in image capturing devices, are complex, large, and have high power consumption and manufacturing costs due to their complex construction and reliance on multiple transmission elements.
Innovation Solution
An electromagnetic driving module with a base, magnetic elements, a wiring assembly, and a sensor element, where the magnetic elements and coils generate a magnetic field to drive a lens assembly with low power consumption and high precision, allowing for compact size and reduced assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional driving modules use complex driving members such as step motors, ultrasonic motors, or piezoelectric actuators, then driving power can be generated, but the device complexity increases and manufacturing cost becomes high
Solution Approach 1:
The patent replaces complex mechanical driving members (step motors, ultrasonic motors, piezoelectric actuators) with a simplified electromagnetic driving system consisting of a driving coil, magnetic element, and base. This substitution eliminates the need for complex mechanical transmission elements while maintaining the driving power function through electromagnetic force generation.
Solution Approach 2:
The patent extracts and removes the complex transmission elements from the driving system, retaining only the essential components (driving coil, magnetic element, base) needed to generate driving power. This extraction simplifies the overall construction while preserving the core driving function.
2Power
If conventional driving modules include complex transmission elements, then driving power can be transmitted, but the manufacturing cost increases
Solution Approach 1:
The patent replaces mechanical transmission elements with a direct electromagnetic driving mechanism. The driving coil generates a magnetic field that directly acts on the magnetic element, eliminating the need for intermediate transmission components and reducing manufacturing cost.
Solution Approach 2:
The patent merges the driving power generation and transmission functions into a single integrated electromagnetic system. The driving coil, magnetic element, and base work together as a unified mechanism, eliminating the need for separate transmission components and reducing overall manufacturing cost.
3Power
If conventional driving modules have complex construction, then driving power can be generated and transmitted, but the assembly difficulty increases
Solution Approach 1:
The patent extracts and removes complex transmission elements from the assembly, leaving only the essential driving components (driving coil, magnetic element, base). This reduction in component count significantly simplifies the assembly process while maintaining driving power functionality.
Solution Approach 2:
The patent replaces complex mechanical transmission assemblies with a simplified electromagnetic system that requires fewer assembly steps. The direct electromagnetic interaction between the driving coil and magnetic element eliminates the need for assembling multiple mechanical transmission components.
4Power
If conventional driving modules use multiple transmission elements, then driving power can be transmitted, but the device size becomes large
Solution Approach 1:
The patent replaces extended mechanical transmission elements with a compact electromagnetic system. The magnetic field generated by the driving coil can act on the magnetic element without requiring physical transmission components, significantly reducing the device volume while maintaining driving power transmission capability.
Solution Approach 2:
The patent merges the driving power generation and transmission functions into a compact integrated electromagnetic system. This consolidation eliminates the need for separate transmission elements and reduces the overall device volume.
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
The electromagnetic driving module achieves low power consumption, small size, high positioning precision, and reduced manufacturing costs, facilitating efficient auto-focus and auto-zoom controls in electronic devices.
Implementation Method 1
the electromagnetic driving module is driven by a motive force provided by a magnetic element and a magnetic field provided by coils as a current passes through
Implementation Method 2
the sensor element includes a Hall effect sensor, and the reference element includes a permanent magnet
Data Source
AI summary
The disclosure discloses an electromagnetic driving module which includes a base, two magnetic elements, a wiring assembly, a reference element, and a sensor element. The two magnetic elements are arranged along a reference line and positioned at two sides of the base. The wiring assembly is connected to the base and arranged adjacent to the two magnetic elements. The reference element is positioned on the base. The sensor element is adjacent to the reference elements and configured to detect the movement of the reference element to position the base. A lens device using the electromagnetic driving module is also disclosed.