Optical Element Drive Layout for Magnetic Interference Shielding
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Solution Overview
Problem
Existing optical element driving mechanisms experience magnetic interference between adjacent mechanisms, leading to reduced focusing speed and accuracy.
Innovation Solution
The optical element driving mechanism includes a fixed part, a movable part, a metallic member, and a driving assembly. The metallic member has inner and outer electrical connection parts connected to each other, and the driving assembly features driving magnetic elements that drive the movable part relative to the fixed part. The outer electrical connection parts are positioned on the same side of the system, and the driving magnetic elements are not disposed on adjacent sides of the mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If two optical element driving mechanisms are arranged close to each other, then the device structure is compact, but magnetic interference occurs between the magnets causing reduced focusing speed and accuracy
Solution Approach 1:
A metallic member is introduced as an intermediary component between adjacent optical element driving mechanisms. This metallic member acts as a magnetic shield that blocks and redirects magnetic field lines, preventing magnetic interference between the magnets of neighboring mechanisms while allowing the mechanisms to be arranged in a compact configuration.
Solution Approach 2:
The metallic member extends in a direction perpendicular to the optical axis, creating a spatial barrier in a different dimension. By positioning the metallic member laterally between mechanisms rather than along the optical path, it effectively blocks magnetic field propagation without interfering with the optical function or requiring additional space along the optical axis.
2Manufacturing precision
If the metallic member is positioned to block magnetic interference, then focusing accuracy is improved, but the device structure becomes more complex
Solution Approach 1:
The metallic member serves multiple functions simultaneously: it acts as a magnetic shield to block interference between mechanisms, provides structural support for mounting the driving assembly, and can serve as part of the housing or frame structure. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The metallic member is integrated with the housing or frame structure of the optical element driving mechanism rather than being a separate add-on component. By merging the magnetic shielding function with the existing structural elements, the design avoids increasing overall device complexity while still achieving the required focusing accuracy.
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 configuration effectively prevents magnetic interference between optical element driving mechanisms, enhancing the focusing speed and accuracy of optical elements.
Implementation Method 1
The driving assembly includes at least one driving magnetic element and drives the movable part to move relative to the fixed part
Data Source
AI summary
An optical element driving mechanism is provided, including a fixed part, a movable part, a metallic member and a driving assembly. The fixed part includes a base. The movable part is movably connected to the fixed part, and carries an optical element, the optical element has an optical axis. The metallic member is disposed on the base, and includes an inner electrical connection part and an outer electrical connection part, the inner electrical connection part and the outer electrical connection part are connected to each other. The driving assembly includes at least one driving magnetic element and drives the movable part to move relative to the fixed part.