Compact Optical Element Drive With Integrated Vibration Damping
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Solution Overview
Problem
The challenge in modern electronic devices is to reduce the size of optical element driving mechanisms while maintaining durability and stability for auto focus and optical image stabilization functions.
Innovation Solution
An optical element driving mechanism comprising a movable portion, fixed portion, driving assembly, and circuit assembly, utilizing magnetic elements and coils for movement, damping elements for vibration absorption, and position sensing assemblies for precise control, with non-metallic materials for damping and resilient structures for enhanced 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 stability of the mechanism deteriorates
Solution Approach 1:
The patent employs composite material structures in the driving mechanism components, combining different materials to achieve both miniaturization and enhanced durability. The movable portion and fixed portion utilize composite constructions that maintain structural integrity while reducing overall size, resolving the contradiction between compact dimensions and mechanical reliability.
2Object-affected harmful factors
If damping elements are added to reduce vibration, then the optical stability improves, but the device complexity increases
Solution Approach 1:
The damping elements are integrated into the existing driving mechanism structure rather than being added as separate external components. The first and second damping elements are incorporated within the movable portion and fixed portion assemblies, combining vibration reduction functionality with the structural components to minimize additional complexity while effectively reducing optical vibration.
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 mechanism achieves compact size and improved durability, enabling effective auto focus and optical image stabilization with reduced vibration and enhanced precision.
Implementation Method 1
the driving assembly includes a first magnetic element and a first coil corresponding to the first magnetic element
Implementation Method 2
a first damping element used for absorbing abnormal vibration of the movable portion relative to the fixed portion, and a second damping element used for absorbing abnormal vibration of the movable portion 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, a driving assembly, and a circuit assembly. The movable portion is used for connecting to a first optical element. The movable portion is movable relative to the fixed portion. The driving assembly is used for driving the movable portion to move relative to the fixed portion. The circuit assembly is electrically connected to the driving assembly. The driving assembly is electrically connected to an external circuit through the circuit assembly.