Imaging Module with Shared Focus and Aperture Drive
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Solution Overview
Problem
Existing imaging modules face challenges with large volume and weight due to interference between the blade driving mechanism and focusing mechanism, and the distribution of weight in the blade driving mechanism is difficult to implement uniformly, affecting the reliability of the product.
Innovation Solution
The imaging module incorporates a lens support frame, a base, and a blade driving frame with integrated driving members that allow the lens and blade driving mechanisms to share a common driving member, reducing component count and avoiding interference by using a magnet and coil system for synchronized movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional blade driving mechanism is used to control the aperture, then the aperture can be adjusted, but the volume and weight of the imaging module increase due to interference with the focusing mechanism
Solution Approach 1:
The patent combines the blade driving mechanism and focusing mechanism into a shared structure where the blade driving frame is movably supported on the base and the lens support frame is also supported on the base. Both mechanisms share the same driving member (first driving member) and spatial arrangement, eliminating the need for separate driving mechanisms and reducing overall volume and weight while maintaining reliable aperture control.
Solution Approach 2:
The first driving member serves dual functions: it drives the lens support frame to move along the optical axis for focusing, and it drives the blade driving frame to rotate for aperture control. This multi-functional design reduces the number of components and eliminates interference between separate mechanisms, thereby reducing volume and weight while maintaining both functions' reliability.
2Volume of moving object
If the blade driving mechanism is made smaller and lighter using shape memory metal, then weight and volume are reduced, but the mechanism cannot effectively solve problems when large variation in opening size is required
Solution Approach 1:
The patent employs a dynamic blade driving frame that can rotate relative to the base, allowing the light-shielding blades to gather or separate to achieve large aperture variations. The blade driving ring rotatably engages with the blade support portion, enabling the blades to move from a gathered state (small opening) to a separated state (large opening), providing adaptability for different shooting scenarios without increasing mechanism volume.
Solution Approach 2:
The aperture control is achieved by dividing the aperture into multiple segments (light-shielding blades) that can independently move. Each blade is rotatably connected to the blade support portion and slidably connected to the blade driving ring, allowing individual blade movement to collectively achieve large aperture variation while keeping each component small and lightweight.
3Reliability
If the blade driving mechanism and focusing mechanism are kept separate to avoid interference, then reliability is improved, but the distribution of weight becomes difficult to implement uniformly
Solution Approach 1:
The patent uses an asymmetric arrangement where the blade driving frame and lens support frame are positioned at different locations on the base, with the blade driving frame arranged around the optical axis and the lens support frame positioned separately. This asymmetric layout avoids interference between mechanisms while allowing independent optimization of each mechanism's structure for uniform weight distribution and reliable servo control.
4Adaptability or versatility
If multiple driving members are used to control both focusing and aperture, then functionality is improved, but device complexity and weight increase
Solution Approach 1:
The first driving member is designed to perform both focusing and aperture control functions. When the first driving member moves along the optical axis, it drives the lens support frame for focusing. When it rotates, it drives the blade driving frame for aperture control. This single multi-functional driving member eliminates the need for separate driving mechanisms, reducing device complexity and weight while maintaining full functionality.
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 design reduces the volume and weight of the imaging module while ensuring smooth operation and stability by minimizing interference between the focusing and blade driving mechanisms, enhancing the reliability and controllability of the imaging module.
Implementation Method 1
The first driving member cooperates with the second driving member to drive the lens support frame to move along the optical axis for focusing
Implementation Method 2
the first driving member is also used for cooperating with the third driving member to drive the blade driving frame to rotate around the optical axis
Data Source
AI summary
The present invention relates to an imaging module. A first driving member and a second driving member cooperate to drive the lens support frame to focus; and the first driving member is also for cooperating with a third driving member to drive multiple light-shielding blades to gather or separate, via the blade driving frame and the blade driving ring That is, the drive member which drives the light-shielding blade to move and drives the lens module to focus is the first driving member, so that the number of components of the imaging module can be reduced, thereby reducing the volume and weight of the imaging module, and avoiding interference between the focusing structure. A camera and an electronic device are also provided.