Optical Element Driving Mechanism With Embedded Magnetic Assembly
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Solution Overview
Problem
The challenge in the electronic device industry is to create a thinner optical element driving mechanism while maintaining structural strength, which existing mechanisms have not effectively addressed.
Innovation Solution
The proposed optical element driving mechanism includes a fixed part, a movable part, and a driving assembly with a strengthening frame and circuit member, utilizing a metal or magnetic-permeable embedded assembly with a closed structure and protrusions for enhanced structural support, along with elastic elements and magnetic components for precise movement and connection, ensuring stability and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the optical element driving mechanism is made thinner, then the device thickness is reduced, but the structural strength deteriorates
Solution Approach 1:
The patent employs a composite structure combining a strengthening frame made of magnetic-permeable material with an embedded assembly containing circuit members. This composite design allows the mechanism to achieve both thinness and structural strength through material composition rather than increasing overall dimensions.
Solution Approach 2:
The driving mechanism is segmented into distinct functional components: a strengthening frame providing structural support, an embedded assembly containing circuit members, and a magnetic element. This segmentation allows each component to be optimized independently - the frame for strength, the embedded assembly for electronics integration, and the magnetic element for actuation - while collectively achieving a thin profile.
2Strength
If the strengthening frame is made with a closed structure surrounding the optical axis, then the structural strength is improved, but the device complexity increases
Solution Approach 1:
The strengthening frame with its closed structure surrounding the optical axis serves multiple functions simultaneously: it provides structural strength, acts as a magnetic-permeable pathway for magnetic field distribution, and serves as a mounting structure for the embedded assembly. This multi-functionality reduces overall device complexity despite the sophisticated closed structure.
Solution Approach 2:
The patent merges the strengthening frame, embedded assembly, and magnetic element into an integrated unit where the circuit members are embedded within the base structure. This consolidation eliminates the need for separate mounting structures and connection components, reducing overall complexity while maintaining the closed structure's strength benefits.
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 design achieves both miniaturization and enhanced structural strength, effectively distributing forces and maintaining the optical element's alignment and integrity, simplifying manufacturing and reducing contamination risks.
Implementation Method 1
The driving assembly further includes a magnetic element disposed on the case. When viewed along the optical axis, the magnetic element partially overlaps the embedded assembly.
Implementation Method 2
The movable part further includes an elastic element and an electrical connection element.
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed part, a movable part, and a driving assembly. The fixed part includes a bottom. The movable part is movable relative to the fixed part. The movable part holds an optical element with an optical axis. The driving assembly drives the movable part to move relative to the fixed part. The bottom includes a base and an embedded assembly. The embedded assembly is partially embedded in the base. The embedded assembly includes a magnetic-permeable material.