Electromagnetic Aperture Blade Assembly for Compact Camera Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The miniaturization of electronic devices, such as cameras and smartphones, complicates mechanical design and leads to low reliability and driving force for lens adjustment, making it challenging to effectively control the aperture for optimal image capture.
Innovation Solution
An aperture unit with a guiding element, first and second blades, a driving assembly, and a circuit assembly, which includes a magnetic element and sliding elements, allows for continuous adjustment of the aperture size by electromagnetic forces, reducing friction and enhancing mechanical strength while preventing electrical interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple coils and magnets are used for lens focus adjustment, then the lens can be adjusted, but the device size increases and mechanical design becomes complicated
Solution Approach 1:
The patent replaces traditional mechanical focus adjustment mechanisms (coils and magnets) with an electromagnetic driving assembly that uses electromagnetic forces to move the aperture blade directly, simplifying the mechanical structure while maintaining adjustment capability
Solution Approach 2:
The patent changes the operating parameters by using electromagnetic fields instead of mechanical contact, allowing for precise control of aperture blade position through electrical signals rather than mechanical linkages
2Volume of moving object
If device miniaturization is implemented, then electronic devices become thinner and more convenient, but driving force and reliability for lens adjustment decrease
Solution Approach 1:
The patent replaces mechanical transmission systems with electromagnetic direct drive, eliminating mechanical wear and transmission losses that limit reliability in miniaturized devices, while maintaining sufficient driving force through optimized electromagnetic actuators
Solution Approach 2:
The patent segments the aperture control function from the lens focus system, creating an independent electromagnetic driving assembly for aperture blades that can be optimized separately for reliability and size
3Volume of moving object
If device miniaturization is implemented, then electronic devices become thinner and more convenient, but driving force for lens adjustment decreases
Solution Approach 1:
The patent substitutes mechanical force transmission with electromagnetic force generation, allowing for high driving force in a compact form factor through direct electromagnetic actuation of the aperture blade without mechanical gear trains or 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
This solution enables precise control of the aperture size to optimize light intake, improving image quality in varying brightness conditions and reducing the risk of mechanical damage during movement, thus addressing the challenges of miniaturization.
Implementation Method 1
a driving assembly used for driving the guiding element to move for moving the first blade
Implementation Method 2
allows for continuous adjustment of the aperture size by electromagnetic forces, reducing friction
Data Source
AI summary
An aperture unit having an optical axis is provided, which includes a fixed portion, a guiding element movably connected to the fixed portion, a first blade movably connected to the guiding element and the fixed portion, a driving assembly used for driving the guiding element to move for moving the first blade, a circuit assembly electrically connected to the driving assembly, and a bottom plate disposed on the circuit assembly and including metal.