Finely Adjustable Lens Aperture With Rotating Disk Blade Control
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Solution Overview
Problem
Existing lens modules have limited aperture size adjustments due to a finite number of gears, affecting user experience and imaging quality.
Innovation Solution
A lens module with a mechanism using a driving member, rotating disk, and blades that allow continuous and precise adjustment of the aperture size through a piezoelectric block-driven system, enabling arbitrary control of light passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a lens module uses a limited number of gears to adjust aperture size, then the device complexity is reduced, but the measurement precision of aperture size adjustment is limited
Solution Approach 1:
The patent replaces the traditional mechanical gear system with a piezoelectric driving mechanism. The piezoelectric block converts electrical signals directly into mechanical displacement, driving the blades to adjust aperture size continuously without requiring multiple discrete gears. This substitution enables fine-grained aperture control while simplifying the mechanical structure.
Solution Approach 2:
The patent implements a dynamic aperture adjustment system where the piezoelectric block can continuously vary the aperture size based on electrical signals, rather than being constrained to fixed positions determined by gear teeth. This dynamic control allows the aperture to adapt precisely to different imaging requirements.
2Adaptability or versatility
If a lens module uses continuous aperture adjustment mechanism, then the adaptability of aperture size is improved, but the device complexity increases
Solution Approach 1:
The piezoelectric block serves multiple functions: it acts as both the driving force generator and the positioning mechanism for the aperture blades. This multi-functional component enables continuous aperture adjustment without requiring separate control mechanisms for each aperture position, thereby improving adaptability while controlling complexity.
Solution Approach 2:
The patent changes the control parameter from discrete gear positions to continuous piezoelectric displacement. By controlling the voltage applied to the piezoelectric block, the system can achieve any aperture size within its range, providing continuous adaptability rather than fixed steps.
3Use of energy by moving object
If a lens module uses piezoelectric block-driven system, then the energy consumption is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent replaces energy-intensive mechanical gear systems with piezoelectric actuators that consume minimal energy. The piezoelectric effect converts electrical energy directly into mechanical motion with high efficiency, significantly reducing the energy required for aperture adjustment while maintaining precise control.
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
Enables precise and energy-efficient aperture control, improving user experience and imaging quality by allowing continuous adjustment of light intake, reducing energy consumption, and maintaining a compact module size.
Implementation Method 1
a driving member 32, a rotating disk 33 and a plurality of blades 34, wherein the driving member 32 is connected to the rotating disk 33 and used for driving the rotating disk 33 to rotate, thereby driving the blades 34 to move closer to or away from each other
Data Source
AI summary
A lens module with light-passing hole which is finely adjustable in size includes a lens and aperture assembly. The aperture assembly includes cover body, driving member, rotating disk, and light-blocking blades. The cover body is outside the lens and defines a first aperture. The rotating disk is on the cover body and defines a second and adjustable aperture. The blades are between the cover body and rotating disk, each blade comprising a side surface and the plurality of blades work together to form a light-passing hole. The rotating disk is driven to rotate by the driving member, the blades thereby moving closer to or away from each other, to adjust an aperture of the lens module. The present disclosure further provides an electronic device.