Optical Module Aperture Coil Structure for Simpler Iris Control
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Solution Overview
Problem
Conventional aperture structures in optical modules are complex, large, costly, and difficult to maintain due to numerous moving parts and precise control requirements, affecting reliability and lifespan.
Innovation Solution
An aperture coil inside an autofocus lens drives aperture blades via metal terminals and springs, reducing parts and complexity while maintaining aperture control functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional aperture structures use several blades combined with complex mechanical linkage systems and drive motors, then aperture control functionality is achieved, but the number of components increases, structure becomes complex, and manufacturing cost increases
Solution Approach 1:
The patent replaces the conventional mechanical linkage system and drive motors with a magnetic drive mechanism. The magnetic drive assembly uses magnetic attraction and repulsion forces to directly drive the aperture blades, eliminating the need for complex mechanical linkages, gears, and motors. This substitution of mechanical systems with magnetic fields resolves the contradiction by maintaining aperture control functionality while significantly reducing structural complexity.
Solution Approach 2:
The patent merges the aperture drive function with the existing autofocus lens structure. The magnetic drive assembly is integrated into the optical module, combining multiple functions (aperture control and autofocus) into a unified structure. This merging reduces the overall number of separate components and simplifies the system architecture while maintaining reliable aperture control.
2Reliability
If conventional aperture structures use several blades combined with complex mechanical linkage systems, then aperture control functionality is achieved, but the number of components increases and manufacturing cost increases
Solution Approach 1:
By replacing mechanical linkage systems and drive motors with a magnetic drive assembly, the patent reduces the number of manufactured parts. The magnetic drive mechanism requires fewer precision-machined components and assembly steps, thereby lowering manufacturing costs while maintaining aperture control reliability.
Solution Approach 2:
The patent extracts and removes unnecessary mechanical components (linkages, gears, motors) from the aperture drive system, retaining only the essential aperture blades and the compact magnetic drive assembly. This extraction of redundant parts simplifies manufacturing processes and reduces production costs.
3Reliability
If conventional aperture structures use complex mechanical linkage systems with many moving parts, then aperture control functionality is achieved, but maintenance difficulty increases and lifespan decreases
Solution Approach 1:
The magnetic drive assembly eliminates numerous moving mechanical parts such as linkages, gears, and motor components that require maintenance. By using magnetic fields for actuation, the system has fewer wear points and moving interfaces, making it easier to maintain and repair while extending the operational lifespan of the optical module.
4Manufacturing precision
If conventional aperture structures require precise multi-level aperture value control, then aperture precision is improved, but structure becomes more sophisticated and size increases
Solution Approach 1:
The magnetic drive assembly enables dynamic and precise control of aperture blade positions through variable magnetic field strength. By adjusting the current to the magnetic drive coil, the system can achieve precise multi-level aperture values without requiring complex mechanical positioning mechanisms or multiple discrete components, thus maintaining precision while reducing structural sophistication.
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 simplifies the structure, reduces costs, and enhances reliability by minimizing components, making it suitable for lightweight and low-cost optical lenses.
Implementation Method 1
an aperture coil arranged inside an autofocus lens drives the aperture blades
Implementation Method 2
Power is controlled via metal terminals and springs
Data Source
AI summary
An optical module is provided. The optical module includes a first movable part, a fixed part, and a first driving assembly. The first movable part is for connecting a first optical assembly. The first movable part moves relative to the fixed part. The first driving assembly is for driving the first movable part to move.