Rotating Shading-Blade Aperture for Compact Mobile Camera Light Control
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Solution Overview
Problem
Existing mobile phone cameras lack the capability for variable aperture adjustment due to space constraints and complex mechanical structures, limiting their ability to maintain consistent shooting quality across varying brightness conditions.
Innovation Solution
A variable aperture system with a simple rotational mechanism using a driving member and shading blades that adjust the effective light entrance area by rotating within the aperture hole, eliminating the need for complex mechanical structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a variable aperture mechanism is implemented in mobile phone cameras, then shooting quality under various brightness conditions is improved, but device complexity and cost increase
Solution Approach 1:
The patent implements a variable aperture mechanism where the aperture hole size can dynamically change between different states (first aperture state and second aperture state). The aperture hole is configured to switch between a first aperture size for high brightness environments and a second aperture size for low brightness environments, enabling adaptive light control without requiring complex mechanical moving parts.
Solution Approach 2:
The patent changes the aperture parameter (hole size) to achieve different light transmission levels. By configuring the aperture hole with different aperture sizes corresponding to different brightness conditions, the system adapts to various shooting environments through parameter variation rather than complex mechanical structures.
2Adaptability or versatility
If traditional variable aperture structures are used, then aperture adjustment functionality is achieved, but manufacturing cost increases
Solution Approach 1:
The patent achieves aperture adjustment functionality through a simplified dynamic structure. Instead of traditional complex mechanical iris mechanisms, the invention uses an aperture hole that can switch between different aperture states, reducing manufacturing complexity and cost while maintaining the essential variable aperture functionality.
Solution Approach 2:
The patent implements cost-effective variable aperture by changing the aperture hole size parameter. The aperture hole is designed with different aperture sizes that can be switched between, providing aperture adjustment functionality through parameter variation rather than expensive mechanical structures.
3Illumination intensity
If aperture size is reduced for high brightness environments, then overexposure is prevented, but light input is insufficient for low brightness environments
Solution Approach 1:
The patent uses a dynamic aperture hole that can switch between different aperture states. In high brightness environments, the aperture hole adopts a first aperture size to limit light input and prevent overexposure. In low brightness environments, it switches to a second aperture size to maximize light input, thereby adapting to different brightness conditions.
Solution Approach 2:
The patent changes the aperture hole size parameter to control light input according to brightness conditions. By configuring the aperture hole with different aperture sizes, the system adjusts light transmission to match environmental brightness, preventing overexposure in bright conditions while ensuring sufficient light input in dark conditions.
Data Source
AI summary
The present disclosure provides a variable aperture, camera module, and electronic device, belonging to the field of electronic technology. The variable aperture includes: a first base member, a driving member, and at least one shading blade; The first base member includes an aperture hole, at least one shading blade is rotatably connected to the first base member, and the driving member is movably connected to at least one shading blade; The variable aperture is configured so that when the driving member moves relative to the first base member, the driving member drives at least one shading blade to rotate relative to the first base member, causing at least a portion of the shading blade to enter or exit the aperture hole, changing the effective light entrance area of the aperture hole.