Electromagnetic Aperture Unit for Compact Camera Focus Control
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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 achieve effective focus and image stabilization.
Innovation Solution
An optical system with an aperture unit that includes a fixed portion, a guiding element, a first blade, and a driving assembly, where the guiding element moves relative to the fixed portion in one dimension, causing the first blade to move in a different dimension, allowing for adjustable aperture size control through electromagnetic forces, enabling precise focus and image stabilization without additional driving elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If several coils and magnets are used for adjusting the focus of a lens, then the focus adjustment function is achieved, but the device size increases and mechanical design becomes complicated
Solution Approach 1:
The patent replaces the traditional mechanical focus adjustment system (coils and magnets) with an optical system that uses an adjustable aperture and light reflection/refraction principles. The aperture unit with movable blades controls light transmission, and the guiding element directs light paths, eliminating the need for complex electromagnetic mechanical systems while achieving focus adjustment through optical means.
Solution Approach 2:
The patent extracts and removes the unnecessary mechanical components (coils and magnets) from the optical system, keeping only the essential optical elements (aperture unit with blades, guiding element, and fixed portion) that directly contribute to focus adjustment and light control, thereby simplifying the overall device structure.
2Ease of operation
If several coils and magnets are used for adjusting the focus of a lens, then the focus adjustment function is achieved, but the driving force becomes insufficient and reliability decreases
Solution Approach 1:
The patent replaces the unreliable mechanical driving system (coils and magnets) with a passive optical system that uses light physics principles. The aperture blades and guiding element rely on light reflection, refraction, and geometric optics to achieve focus adjustment without requiring active mechanical driving forces, thereby improving system reliability.
3Volume of moving object
If the electronic device is miniaturized, then the device size decreases, but the mechanical design difficulty increases and lens adjustment becomes problematic
Solution Approach 1:
The patent transitions from a mechanical dimension (physical movement of lens elements) to an optical dimension (control of light paths and aperture geometry). By using the aperture unit with movable blades that control light transmission angles and paths, the system achieves focus adjustment through optical geometry rather than mechanical displacement, enabling miniaturization without proportionally increasing mechanical design complexity.
Solution Approach 2:
The patent replaces mechanical lens adjustment mechanisms with an optical aperture control system. The guiding element and aperture blades manipulate light paths geometrically, eliminating the need for complex miniaturized mechanical drive systems and reducing overall device volume while maintaining functionality.
4Volume of moving object
If the electronic device is miniaturized, then the device size decreases, but the driving force for moving the lens becomes low
Solution Approach 1:
The patent eliminates the need for mechanical driving force by replacing the mechanical lens movement system with an optical aperture control system. The aperture blades and guiding element use light physics (reflection, refraction, geometric optics) to achieve focus adjustment without requiring any driving force, thereby resolving the contradiction between miniaturization and available driving force.
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 enhances the focus function and optical compensation, reduces mechanical stress, and achieves miniaturization by allowing continuous adjustment of the aperture size, improving image quality and reducing the risk of damage from movement.
Implementation Method 1
allowing for adjustable aperture size control through electromagnetic forces
Data Source
AI summary
An optical system is provided, which includes a holder used for connecting an aperture unit, a bottom, a second driving assembly used for driving the holder to move, an upper spring disposed on the holder, and an aperture unit disposed on the holder and comprising a third driving assembly used for controlling a size of an aperture opening. The holder is movable relative to the bottom. The third driving assembly is electrically connected to the upper spring.