Optical Element Driving Mechanism With Magnetic Stabilization
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Solution Overview
Problem
Modern electronic devices with image-capturing and video-recording functions face challenges in maintaining image quality and stability within limited device volumes, particularly in effectively moving optical elements to accommodate varying optical element positions and masses.
Innovation Solution
An optical element driving mechanism utilizing a movable portion, a fixed portion, and a driving assembly, along with a sensing assembly featuring magnetic elements and a magnetic permeable element, generates a strong magnetic attraction force to stabilize the movement of optical elements, ensuring stability and compatibility with optical elements whose center of mass is higher than the fixed portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a driving assembly is used to move the optical element, then the optical element can be positioned and moved, but the stability and image quality deteriorate when the optical element's center of mass is higher than the fixed portion
Solution Approach 1:
The patent introduces a magnetic attraction force between the driving assembly and the optical element to counteract the gravitational effect on the optical element. When the optical element's center of mass is higher than the fixed portion, the magnetic attraction force provides additional stabilizing force to prevent instability, effectively acting as a counterbalancing mechanism that maintains reliability without requiring mechanical counterweights.
2Volume of moving object
If the device volume is reduced to make devices thinner and lighter, then portability is improved, but the ability to effectively move optical elements and maintain image quality deteriorates
Solution Approach 1:
The patent replaces traditional mechanical driving mechanisms with a magnetic field-based driving assembly. This substitution allows for a more compact design as magnetic fields do not require large mechanical structures, while still providing sufficient force to move the optical element and maintain image quality. The magnetic attraction force enables effective optical element movement within a reduced device volume.
3Ease of operation
If the optical element's center of mass is higher than the fixed portion, then the optical element can be positioned, but the stability deteriorates due to gravitational effects
Solution Approach 1:
The magnetic attraction force between the driving assembly and the optical element serves as a counterbalancing force against gravity. When the optical element is positioned with its center of mass higher than the fixed portion, the magnetic attraction provides the necessary stabilizing force to prevent the optical element from becoming unstable, enabling both positioning capability and stability to coexist.
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 provides enhanced stability and compatibility for optical elements by generating a magnetic attraction force several times greater than the weight of the movable portion, ensuring precise and stable movement, thus improving image quality and device performance.
Implementation Method 1
a sensing assembly featuring magnetic elements and a magnetic permeable element, generates a strong magnetic attraction force to stabilize the movement of optical elements
Data Source
AI summary
An optical element driving mechanism is provided, including a movable portion, a fixed portion, and a driving assembly. The movable portion is connected to an optical element. The fixed portion includes a bottom. The movable portion is movable relative to the fixed portion. The driving assembly drives the movable portion to move relative to the fixed portion. The driving assembly drives the optical element to move relative to the fixed portion.