Nested Variable Aperture Structure for Compact Camera Modules
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional variable apertures with movable parts hinder miniaturization due to large moving spaces and occupied volumes, affecting the compact design of camera modules.
Innovation Solution
A variable aperture design featuring a rotating support on the inner side of a fixing base, with blades that rotate and slide relative to the support, and a stator-magnet-coil configuration that drives rotation without additional moving space, allowing for compact arrangement and precise aperture control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional variable aperture structure with movable parts is used, then the aperture can be adjusted, but the moving space and occupied volume become large, hindering miniaturization
Solution Approach 1:
The patent places the movable support inside the fixed support, creating a nested structure where the rotating support is located on an inner side of the fixing base. This nesting approach allows the variable aperture mechanism to be contained within a compact volume while maintaining its aperture adjustment function, directly resolving the contradiction between miniaturization and operational capability.
Solution Approach 2:
The patent transitions from a planar arrangement to a three-dimensional nested configuration, positioning the movable support in the radial dimension inside the fixed support. This dimensional reorganization reduces the overall volume occupied by the variable aperture while preserving the ability to adjust the aperture through rotational movement of the inner support.
2Reliability
If the rotating support is placed on the outer side of the fixing base, then space can be reserved to avoid interference, but the structure becomes large and miniaturization is hindered
Solution Approach 1:
Instead of placing the rotating support on the outer side of the fixing base, the patent inverts the arrangement by nesting the rotating support inside the fixing base. This nested configuration eliminates the need for additional space reservation to avoid interference, as the inner support naturally remains clear of outer components, thereby reducing the overall structure size while maintaining reliability.
3Manufacturing precision
If the movable part is connected to the rotating part through a linkage mechanism, then the aperture can be controlled, but the moving space required increases
Solution Approach 1:
The patent extracts and eliminates the intermediate linkage mechanism from the conventional design. Instead of using a complex linkage to connect the movable part to the rotating part, the invention directly couples the movable support to the rotating support, reducing the moving space required while maintaining precise aperture control through the simplified rotational mechanism.
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
Facilitates miniaturization of the variable aperture and camera module by reducing space occupancy and ensuring accurate aperture control, enhancing shooting quality and energy efficiency.
Implementation Method 1
the mover is configured to drive, in cooperation with the stator, the rotating support to rotate relative to the fixing base
Data Source
AI summary
A variable aperture, a camera module, and an electronic device are provided. The variable aperture includes a fixing base, a rotating support, a mover, a stator, and a plurality of blades. The rotating support is disposed on an inner side of the fixing base. In this way, the rotating support does not interfere with components on an outer side of the fixing base, thereby ensuring accuracy of a rotation angle of the rotating support in a rotating process. Components on the outer side of the fixing base may be disposed close to the fixing base and arranged more compactly, thereby facilitating miniaturization of the variable aperture. The mover is fixedly connected to an outer peripheral side surface of the rotating support, and the stator is disposed facing the mover.