Photosensitive Element Drive with Electromagnetic Stabilization
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Solution Overview
Problem
Existing camera module driving mechanisms fail to meet the demands of miniaturization while maintaining clear image quality and optical image stabilization.
Innovation Solution
A photosensitive element driving mechanism featuring a fixed assembly, movable assemblies, 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 components are reduced in size to achieve miniaturization, then the device size is reduced, but the image quality becomes unclear
Solution Approach 1:
The camera module is divided into separate functional components: a fixed assembly containing the lens, a movable assembly containing the photosensitive element, and independent driving assemblies. This segmentation allows each component to be optimized independently, enabling miniaturization while maintaining image quality through precise control of each segment's function and position.
2Volume of moving object
If the camera module components are reduced in size to achieve miniaturization, then the device size is reduced, but optical image stabilization capability deteriorates
Solution Approach 1:
The patent replaces traditional mechanical image stabilization mechanisms with a magnetic field-based driving system. Electromagnetic driving assemblies use magnetic fields to precisely control the position of the photosensitive element, achieving stabilization without complex mechanical structures, thereby enabling miniaturization while maintaining or improving stabilization reliability.
3Device complexity
If traditional driving mechanisms are used, then the structure is simple, but the movement precision and stabilization performance are insufficient
Solution Approach 1:
The patent changes the fundamental operating parameters of the driving system by transitioning from mechanical contact-based actuation to electromagnetic field-based actuation. This parameter change enables much finer control over the photosensitive element's position and movement, achieving high precision stabilization while keeping the overall structure relatively simple through the use of electromagnetic fields rather than complex mechanical linkages.
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 by optimizing component layout and movement, enhancing optical image stabilization, and improving mechanical strength and heat dissipation, while maintaining clear image quality.
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.