Rectangular Optical Element Driving Mechanism for Miniaturization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in miniaturizing optical element driving mechanisms for electronic devices is to design a mechanism that allows for precise movement of optical elements while maintaining stability and balance, especially as devices continue to shrink in size.
Innovation Solution
The optical element driving mechanism features a movable portion connected to a fixed portion via a driving assembly, with elastic elements and a counterweight system, allowing parallel movement along the optical axis. This design includes a rectangular structure with specific side length relationships and a positioning sensing assembly for stability and miniaturization, utilizing a driving coil and magnetic elements for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the optical element driving mechanism is miniaturized, then the size of the device is reduced, but the stability and precision of optical element movement deteriorates
Solution Approach 1:
The patent employs asymmetric distribution of magnetic elements and elastic elements within the driving mechanism. The magnetic elements are positioned at specific locations on the movable portion and fixed portion, creating an asymmetric magnetic field distribution that enables precise control. The elastic elements are also asymmetrically arranged to provide differential support forces, maintaining stability despite the compact size. This asymmetric design allows the mechanism to achieve both miniaturization and reliable operation.
2Volume of moving object
If the optical element driving mechanism is miniaturized, then the device size is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent designs the magnetic elements and elastic elements to create a balanced force distribution system. The magnetic elements are positioned to generate equipotential regions in the magnetic field, ensuring that the movable portion experiences uniform forces during operation. The elastic elements are configured to provide equipotential support, compensating for manufacturing variations. This equipotential design approach reduces sensitivity to manufacturing tolerances while maintaining precise positioning capability.
3Measurement precision
If the driving assembly is designed for precise control, then the positioning accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions into integrated components. The magnetic elements serve dual purposes: generating driving forces for movement and providing positioning feedback. The elastic elements simultaneously support the movable portion mechanically and influence the magnetic field distribution. The housing structure integrates both mechanical support and magnetic shielding functions. This merging of functions reduces the overall component count and structural complexity while maintaining precise positioning capability.
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 enables the miniaturization of optical element driving mechanisms while maintaining stability and precision, enhancing the optical system's performance in applications like auto focusing and image stabilization, and allowing for thinner designs.
Implementation Method 1
The elastic portions has an elastic material, and the movable-portion-connecting portions are movably connected to the fixed-portion-connecting portions via the elastic portions
Implementation Method 2
utilizing a driving coil and magnetic elements for precise control
Data Source
AI summary
An optical element driving mechanism having an optical axis includes a fixed portion, a movable portion, and a driving assembly. The movable portion is connected to the fixed portion. The driving assembly drives the movable portion to move in a direction that is parallel to the optical axis relative to the fixed portion, when viewed in the direction that is parallel to the optical axis, the optical element driving mechanism is a rectangular structure with a first side, a second side, a third side, and a fourth side, the first side and the third side are opposite, and the first side is adjacent to the second side and the fourth side.