Segmented Driving System for Optical Elements
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Solution Overview
Problem
The miniaturization of electronic devices, such as cameras and smartphones, poses challenges in mechanical design, leading to difficulties in reliably moving lens elements due to increased complexity and reduced driving force.
Innovation Solution
A driving system comprising three modules with terminals on the same side, each connected to an external circuit, utilizing a combination of magnets and coils to generate electromagnetic forces for precise movement of optical elements, enhancing reliability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If several coils and magnets are used for adjusting the focus of a lens, then the auto-focusing capability is improved, but the device complexity increases and the driving force for moving the lens decreases due to miniaturization
Solution Approach 1:
The driving system is divided into multiple independent modules, each containing a coil and magnet assembly. Each module can independently drive a specific lens element, allowing for precise control while simplifying the overall mechanical design. The segmentation enables modular assembly and reduces the complexity of coordinating multiple moving parts.
Solution Approach 2:
The patent implements a nested structure where lens elements are positioned within housings that contain the driving mechanisms. The optical elements are nested within the mechanical assembly, allowing compact integration of multiple functional components in a miniaturized configuration while maintaining adequate driving force.
2Volume of moving object
If miniaturization is implemented in electronic devices, then the device size is reduced, but the reliability and driving force for moving the lens decrease
Solution Approach 1:
The patent optimizes the magnetic field strength and coil configuration parameters to maintain adequate driving force in a miniaturized system. By carefully selecting and adjusting parameters such as magnet size, coil turns, and current density, the system achieves reliable lens movement despite the reduced overall device volume.
Solution Approach 2:
The patent replaces traditional mechanical focusing mechanisms with electromagnetic actuators (coils and magnets). This substitution eliminates complex mechanical linkages, reduces moving parts, and improves reliability while enabling precise control in a compact form factor. The electromagnetic system provides direct drive without mechanical transmission losses.
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 system effectively addresses the challenges of miniaturization by providing a reliable and efficient mechanism for moving optical elements, improving the auto-focusing and image stabilization capabilities while maintaining a compact design.
Implementation Method 1
utilizing a combination of magnets and coils to generate electromagnetic forces for precise movement of optical elements
Data Source
AI summary
A driving system for moving several optical elements is provided, including a first module, a second module and a third module. The first, second and third modules respectively have a first, second and third terminal electrically connected an external circuit. The first terminal is on a first side of the first module, the second terminal is on a second side of the second module, and the third terminal is on a third side of the third module. Specifically, the first, second, and third terminals are located on the same side of the driving system.