Optical Member Driving Mechanism Thickness Reduction
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Solution Overview
Problem
The miniaturization of electronic devices with camera or video functions poses a challenge in reducing the thickness of lens driving modules, which affects the overall thickness of these devices.
Innovation Solution
An optical member driving mechanism is designed with a fixed portion, a movable portion, and a driving assembly, where the movable portion is connected to the fixed portion via elastic members and includes a frame and a base, allowing for the reduction in thickness by optimizing the arrangement of the circuit components and elastic members within the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lens driving module is miniaturized to reduce electronic device thickness, then the thickness of the optical member driving mechanism is reduced, but the arrangement space for circuit components and elastic members becomes insufficient
Solution Approach 1:
The circuit component is embedded within the frame structure, with the frame serving as both a structural support and a container for the circuit component. This nesting arrangement allows the circuit component to be housed within the existing frame boundaries, maximizing space utilization and reducing the overall thickness of the optical member driving mechanism while maintaining proper component arrangement.
2Ease of manufacture
If the circuit component is embedded within the frame, then the manufacturing process is simplified, but the electrical connection reliability between circuit components and elastic members becomes more challenging
Solution Approach 1:
The elastic member serves as an intermediary component that bridges the electrical connection between the embedded circuit component and the movable portion. The elastic member makes electrical contact with the circuit component through the frame structure, providing a reliable electrical pathway while accommodating the thickness reduction and simplifying the manufacturing process by integrating these connections into the assembly process.
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 enables a reduction in the overall height of the optical member driving mechanism, achieving miniaturization while maintaining the autofocus function, and simplifies the manufacturing process by embedding circuit components within the frame.
Implementation Method 1
a first elastic member that is elastically connected to the movable portion and the fixed portion
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a driving assembly, a first circuit assembly, and a second circuit assembly. The fixed portion includes a housing, a frame, and a base. The frame is affixed to the housing. The base is fixedly connected to the housing. The movable portion is movably connected to the fixed portion, and carries an optical element, wherein the optical element has an optical axis. The driving assembly drives the movable portion to move relative to the fixed portion. The first circuit assembly is disposed in the frame, and electrically connected to the driving assembly. The second circuit assembly is disposed on the base.