Photosensitive Element Driving Mechanism for Compact Optical Stabilization
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Solution Overview
Problem
Existing camera module driving mechanisms fail to meet the demands of miniaturization while maintaining image clarity and optical image stabilization functions.
Innovation Solution
A photosensitive element driving mechanism with a fixed assembly, movable assembly, and driving assemblies that utilize flexible and rigid materials, cantilevers, and magnetic components to enable precise movement and stabilization of the photosensitive element, allowing for miniaturization and enhanced image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the camera module structure is reduced in size to achieve miniaturization, then the device becomes more compact, but the image clarity and optical image stabilization functions deteriorate
Solution Approach 1:
The camera module is divided into separate functional assemblies: a fixed assembly containing the driving mechanism, and a movable assembly containing the photosensitive element. This segmentation allows independent optimization of each component, enabling miniaturization while maintaining stabilization function through the gap-based suspension system that isolates the photosensitive element's movement.
Solution Approach 2:
A gap is introduced as an intermediary space between the movable assembly and fixed assembly. This gap serves as a mediator that allows the photosensitive element to move independently for stabilization while being driven by the fixed assembly's driving mechanism, resolving the contradiction between compact size and stabilization performance.
2Ease of manufacture
If traditional camera module designs are used, then manufacturing is simpler, but miniaturization requirements cannot be met
Solution Approach 1:
The patent employs a dynamic suspension system where the movable assembly is held in position by elastic cantilevers rather than rigid connections. This dynamic design allows the system to adapt to size reductions while maintaining functional performance, as the elastic elements can accommodate varying dimensions without compromising the stabilization mechanism.
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 achieves miniaturization of camera modules while improving image clarity and optical image stabilization, reducing electromagnetic interference, and enhancing mechanical strength and heat dissipation.
Implementation Method 1
The movable cantilever has a first segment extending in a direction different from the optical axis, the first segment is electrically connected to the photosensitive element and the fixed assembly, and the first movable assembly moves relative to the fixed assembly through the movable cantilever
Implementation Method 2
The first driving assembly is configured to drive the first movable assembly to move relative to the fixed assembly
Data Source
AI summary
A photosensitive element driving mechanism is provided and includes a fixed assembly, a first movable assembly, a photosensitive element and a first driving assembly. The fixed assembly has a base plate. The first movable assembly includes a circuit member movable relative to the fixed assembly, and the circuit member includes a circuit member body and a movable cantilever. The photosensitive element is configured to receive light traveling along an optical axis. The photosensitive element is disposed on the circuit member body and is electrically connected to the circuit member. The first driving assembly is configured to drive the first movable assembly to move relative to the fixed assembly. There is a gap between the first movable assembly and the fixed assembly, and only the photosensitive element is disposed on the circuit member body.