Optical Element Drive Assembly for Multi-Axis Focus Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical element driving mechanisms face challenges in adjusting focal length to adapt to different photographic conditions while minimizing operational errors caused by magnetic interference and stabilizing the internal structure for better optical quality.
Innovation Solution
An optical element driving mechanism featuring a driving assembly with multiple coils and magnetic elements arranged to drive a movable part relative to a fixed part, allowing flexible movement of optical elements along various axes, and a position sensing assembly to monitor and adjust the movement, thereby reducing magnetic interference and stabilizing the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a driving assembly with magnetic elements and coils is used to adjust optical element position, then the optical photography focal length can be adjusted to adapt to different photographic conditions, but operational errors caused by magnetic interference increase
Solution Approach 1:
The driving assembly is divided into multiple independent coil groups (first coil group, second coil group, third coil group) with different orientations. Each coil group controls movement along a specific axis, allowing independent adjustment without mutual interference. This segmentation enables focal length adaptation while reducing operational errors through spatial separation of magnetic fields.
Solution Approach 2:
Different regions of the driving assembly use coils with different orientations and magnetic field characteristics. The first coil group has coils oriented in a first direction, the second coil group in a second direction, and the third coil group in a third direction. This local differentiation allows precise control of the optical element along multiple axes while minimizing magnetic interference through localized field management.
2Adaptability or versatility
If multiple coils and magnetic elements are arranged to drive movement along various axes, then flexible movement of optical elements is achieved, but device complexity increases
Solution Approach 1:
Each coil group serves multiple functions: the first coil group not only drives movement along the first axis but also contributes to stabilization along other axes. The second and third coil groups similarly provide both primary drive functions and secondary stabilization functions. This multi-functionality reduces the need for separate dedicated components for each degree of freedom, thereby reducing overall device complexity while maintaining movement flexibility.
Solution Approach 2:
The patent combines the driving and stabilization functions into a unified driving assembly where three coil groups work together. Rather than using separate mechanisms for driving and stabilizing the optical element, the same coil groups perform both functions through coordinated operation. This merging of functions simplifies the overall structure while achieving flexible multi-axis movement.
3Measurement precision
If magnetic elements are used for driving, then electromagnetic driving forces enable precise position control, but magnetic interference causes operational errors
Solution Approach 1:
The coil groups are arranged with asymmetric orientations relative to each other. The first coil group has coils oriented in a first direction, the second coil group in a second direction, and the third coil group in a third direction. This asymmetric arrangement creates distinct magnetic field patterns that can be independently controlled, allowing precise position control while minimizing mutual magnetic interference through directional differentiation.
Solution Approach 2:
The patent introduces spatial dimensionality by arranging coil groups in different orientations (first direction, second direction, third direction). This three-dimensional arrangement of magnetic fields allows precise control of the optical element's position in multiple axes while the spatial separation reduces magnetic interference through dimensional differentiation of the field vectors.
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 effectively adjusts the optical element's position to adapt to different photography needs, reduces operational errors, and provides improved and stable optical quality by utilizing the electromagnetic driving forces between coils and magnetic elements.
Implementation Method 1
The first coil and the first magnetic element are for driving the movable part to move along a first axis
Implementation Method 2
The second coil and the second magnetic element are for driving the movable part to move along a second axis that is perpendicular to the first axis
Implementation Method 3
The third coil and the third magnetic element are for driving the movable part to move along a third axis that is parallel to the third magnetic element surface
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a movable part, a fixed part, and a driving assembly. The movable part connects an optical element. The movable part is movable relative to the fixed part. The driving assembly drives the optical element to move relative to the fixed part.