Magnetic Optical Element Drive Layout for Compact OIS and Autofocus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern electronic devices with image-capturing and video-recording functions face challenges in reducing the size of optical element driving mechanisms while maintaining durability and efficiency for auto focus and optical image stabilization.
Innovation Solution
The optical element driving mechanism employs a driving assembly with magnetic elements and resilient elements, allowing for precise movement of the optical element relative to a fixed portion, utilizing magnetic forces and resilient connections to achieve auto focus and optical image stabilization, while minimizing size and maximizing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the driving mechanism size is reduced to meet modern device requirements, then the device becomes more compact and lightweight, but the durability and reliability of the driving mechanism deteriorates
Solution Approach 1:
The driving mechanism is divided into separate magnetic elements (first, second, third, fourth, fifth, and sixth magnetic elements) that can be independently positioned and controlled. This segmentation allows for optimized space utilization while maintaining functional integrity and reliability through distributed magnetic forces.
Solution Approach 2:
The magnetic elements are arranged in a nested configuration where the third magnetic element is disposed between the first and second magnetic elements, and the sixth magnetic element is disposed between the fourth and fifth magnetic elements. This nesting approach maximizes space efficiency while preserving the driving mechanism's functional capabilities.
2Measurement precision
If magnetic elements are arranged with different lengths and positions, then the driving precision and control capability are improved, but the structural complexity increases
Solution Approach 1:
Each magnetic element is assigned specific dimensional characteristics - the first and fourth magnetic elements have different lengths, while the second and fifth magnetic elements have different lengths. This local differentiation optimizes the magnetic field distribution and driving precision without requiring complete structural redesign.
Solution Approach 2:
The magnetic elements are deliberately designed with asymmetric dimensions and positions relative to the optical element's main axis. The first magnetic element has a long side and a short side, and the second magnetic element has a long side and a short side, creating asymmetric magnetic fields that enhance control precision over symmetric designs.
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 effectively reduces the size of the driving mechanism, enhances durability, and maintains the functionality of auto focus and optical image stabilization, enabling efficient operation in compact electronic devices.
Implementation Method 1
The driving assembly includes a first magnetic element, a second magnetic element, and a third magnetic element... the driving assembly is disposed on the movable portion or the fixed portion for driving the movable portion moving relative to the fixed portion
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used for connecting to an optical element, wherein the optical element has a main axis. The movable portion is movably connected to the fixed portion. The driving assembly is disposed on the movable portion or the fixed portion for driving the movable portion moving relative to the fixed portion.