Compact Aperture Mechanism for Miniature Electronic Devices
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Solution Overview
Problem
Existing apertures in single-lens reflex cameras are too large for miniature electronic devices, such as mobile phones and tablets, which require a more compact solution to achieve high-quality photography.
Innovation Solution
A compact aperture design for miniature electronic devices, featuring a base, carrier base, driving part, resilient sheet, and blade group, which allows for multi-gear adjustment of the light entry hole to control the incident light amount, thereby improving photographing quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an existing aperture structure from single-lens reflex cameras is used, then the incident light amount can be adjusted effectively, but the overall structure becomes too large for miniature electronic devices
Solution Approach 1:
The aperture structure is divided into multiple independent blades that can move relative to each other. Each blade is a separate component that can be individually actuated to adjust the aperture opening size, allowing for compact design while maintaining functionality
Solution Approach 2:
The blades are arranged in a nested configuration where multiple blades overlap with each other in a compact circular pattern. This nesting allows the aperture mechanism to achieve a small form factor suitable for mobile devices while still providing effective light control
2Volume of moving object
If the aperture structure is miniaturized for electronic devices, then the form factor is reduced, but the photographing quality may be compromised
Solution Approach 1:
The design optimizes parameters such as blade thickness, blade curvature, and hinge positioning to maintain effective light control in a miniaturized form. By carefully adjusting these parameters, the aperture achieves both small size and high photographing quality
3Measurement precision
If multiple blades are used to adjust incident light amount, then the light control precision is improved, but the device complexity increases
Solution Approach 1:
Multiple blades are combined into a single integrated assembly that moves in a coordinated manner. The blades share common mounting structures and actuation mechanisms, reducing overall complexity while maintaining precise light control capability
Solution Approach 2:
The aperture blades serve multiple functions: they control light amount, define aperture shape for depth of field effects, and can be actuated by a single driving mechanism. This multi-functionality reduces the need for separate components for each function
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 compact aperture design enables efficient adjustment of the light entry hole, enhancing the photographing quality of miniature electronic devices by allowing for precise control of the incident light amount, while maintaining a small form factor.
Implementation Method 1
the resilient sheet may be elastically fixed with (e.g., coupled to) the carrier base to the base. When the carrier base rotates relative to the base, while being driven by the driving part, the driving part provides a forward torque to the carrier base. The resilient sheet may provide a reverse torque that is opposite in direction to the forward torque onto the carrier base. This configuration may limit a position of the carrier base relative to the base. When the forward torque stops, the resilient sheet returns to an initial state and may drive the carrier base to return to an initial state.
Data Source
AI summary
This application provides for an aperture, a camera module, and an electronic device. The aperture includes a base, a carrier base, a driving part, a resilient sheet, and a plurality of blades. A first optical hole for light to pass through is formed on the base. Each blade is hingedly coupled to the base, and the plurality of blades are distributed annularly around the first optical hole. A light entry hole that is formed by the plurality of blades is coaxial with the first optical hole. The carrier base is connected to the base by using the resilient sheet, and the carrier base is configured to drive each blade to rotate relative to the base. This may result in a change in the size of the light entry hole. The driving part is configured to drive the carrier base to rotate by using an axis line of the first optical hole as a rotational axis.