Camera Shutter Driving Mechanism for Compact Light Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
It is challenging to reduce the size of the shutter or aperture mechanism in camera modules of electronic devices while maintaining functionality.
Innovation Solution
A driving mechanism with a fixed part and a movable part, utilizing a coil and magnet to generate electromagnetic force for switching between open and closed states, allowing optical elements to move relative to the fixed part, and incorporating a rotary member to align openings for light propagation or blockage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a traditional shutter or aperture mechanism is used, then the camera module can control light propagation, but the size of the mechanism cannot be reduced
Solution Approach 1:
The optical element is divided into multiple segments (first optical element and second optical element) that can move independently relative to each other and to the fixed part. This segmentation allows for a more compact arrangement where the elements can block light paths individually, enabling size reduction while maintaining effective light control functionality.
Solution Approach 2:
The patent introduces a rotational dimension of movement for the optical elements, in addition to linear movement. The optical elements can rotate about axes perpendicular to the light propagation direction, creating a two-dimensional movement space (linear + rotational) that allows for more efficient space utilization and compact mechanism design.
2Volume of stationary object
If the driving mechanism uses a coil and magnet for electromagnetic actuation, then the structure can be compact, but the magnetic field distribution may be insufficient
Solution Approach 1:
The magnetic yoke is positioned to surround the coil, creating a nested arrangement where the yoke encloses the coil structure. This nesting allows the magnetic field generated by the coil to be contained and directed more effectively by the yoke, enhancing magnetic field distribution within a compact volume and improving actuation efficiency.
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 enables efficient size reduction of the shutter or aperture mechanism while ensuring reliable operation and enhanced magnetic field distribution, facilitating miniaturization and improved structural strength.
Implementation Method 1
the coil and the magnet generate an electromagnetic force to impel the movable part relative to the fixed part
Data Source
AI summary
A driving mechanism is provided, including a fixed part, a movable part connected to the fixed part, and a driving assembly configured to impel the movable part relative to the fixed part, so that the driving mechanism is switchable between an open state and a closed state. The fixed part has a plurality of holes. When the driving mechanism is in the open state, light propagates through the driving mechanism via the holes, and when the driving mechanism is in the closed state, the holes are blocked by the movable part.