Optical Element Driving Mechanism for Miniaturized Auto Focus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern electronic devices with image-capturing or video-recording functions face challenges in reducing the size of optical systems while maintaining durability and achieving functions like auto focus and optical image stabilization.
Innovation Solution
An optical element driving mechanism is developed, comprising a first movable portion, a fixed portion, and a driving assembly. The mechanism includes a second movable portion with a dielectric main body and a metal assembly, and a circuit assembly to drive the movable portions relative to the fixed portion, enabling auto focus and optical image stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the optical system size is reduced, then the device becomes more compact and portable, but the durability and reliability of the optical element driving mechanism deteriorates
Solution Approach 1:
The optical element driving mechanism is divided into multiple independent movable portions (first movable portion, second movable portion) and a fixed portion. Each portion can be independently designed and optimized for both compactness and durability. The segmentation allows the optical element to be divided into smaller units that are easier to protect and more reliable while maintaining overall system compactness.
Solution Approach 2:
The patent employs composite material structures in the movable portions and fixed portion to achieve both miniaturization and enhanced durability. The use of advanced materials with optimized properties allows the compact optical system to maintain high reliability and resistance to wear while minimizing overall size.
2Length of moving object
If the optical element driving mechanism is miniaturized, then the device becomes thinner and lighter, but the driving capability and control precision deteriorates
Solution Approach 1:
The patent replaces traditional mechanical driving systems with an electromagnetic driving mechanism. The electromagnetic actuator uses magnetic fields to drive the movable portions, eliminating the need for bulky mechanical components while providing precise control and sufficient driving capability in a compact form factor.
Solution Approach 2:
The driving mechanism employs dynamic control of electromagnetic fields to achieve precise positioning and movement of the optical elements. The system can adjust the driving force and position in real-time, maintaining high driving capability despite the miniaturized size through sophisticated control algorithms.
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 optical element driving mechanism effectively reduces the size of optical systems, enhances durability, and achieves functions such as auto focus and optical image stabilization, thereby addressing the challenges of miniaturization and durability in modern electronic devices.
Implementation Method 1
a driving assembly, used for driving the first movable portion to move relative to the fixed portion
Data Source
AI summary
An optical element driving mechanism is provided, which comprises a first movable portion, a fixed portion, and a driving assembly. The first movable portion is used for connecting an optical element. The first movable portion is movable relative to the fixed portion. The driving assembly is used for driving the first movable portion to move relative to the fixed portion.