Compact Camera Optics With Integrated Aperture, AF, and OIS
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing camera modules in electronic devices face challenges in achieving auto-focus, optical image stabilization, and adjusting light exposure while maintaining miniaturization.
Innovation Solution
An optical system with a first optical element driving mechanism that serves as an aperture mechanism to adjust light exposure and a second optical element driving mechanism for auto-focus and optical image stabilization, utilizing movable assemblies, rolling elements, and magnetic coils to enable precise movement of optical elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple driving mechanisms are integrated into a compact camera module, then the functionality (auto-focus, optical stabilization, aperture control) is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple driving mechanisms (first driving assembly for aperture control, second driving assembly for optical element positioning) into a single integrated camera module structure. The first and second movable assemblies are disposed within the same housing and share common structural elements, merging multiple functions into one compact unit while maintaining independent control capabilities.
Solution Approach 2:
The housing structure serves multiple functions: it accommodates both the first and second movable assemblies, provides magnetic shielding for the driving mechanisms, supports the lens barrel, and integrates the aperture control and optical stabilization functions. This multi-functional design reduces the need for separate structural components.
2Volume of moving object
If the camera module is miniaturized, then the device size is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The camera module is divided into distinct functional segments: the first movable assembly for aperture control, the second movable assembly for optical element positioning, the fixed assembly for structural support, and the driving assemblies. This segmentation allows each component to be manufactured and assembled with controlled precision requirements, making miniaturization more manageable.
Solution Approach 2:
The first movable assembly is disposed within the housing in a nested configuration with the second movable assembly. The movable assemblies are positioned within the limited space of the compact housing, with the first movable assembly containing the first optical element and the second movable assembly containing the second optical element, maximizing space utilization.
3Device complexity
If the aperture mechanism and optical element driving mechanism are integrated, then the device complexity is reduced, but the optical performance may deteriorate
Solution Approach 1:
The patent provides different structural configurations for different functional areas: the first movable assembly has a specific structure optimized for aperture control, while the second movable assembly has a different structure optimized for optical element positioning. Each assembly is designed with local structural qualities tailored to its specific function, ensuring optimal performance despite integration.
Solution Approach 2:
The housing acts as an intermediary structure that separates and isolates the first and second driving mechanisms, preventing interference between them. The magnetic shielding members within the housing further mediate the magnetic fields of the driving assemblies, ensuring that the aperture control and optical stabilization operations do not interfere with each other, thus maintaining optical performance.
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 system effectively adjusts light exposure, achieves auto-focus, and provides optical image stabilization while maintaining a compact design, enhancing image capture quality and device miniaturization.
Implementation Method 1
a first rolling assembly disposed between the first movable element and the first base. The first rolling assembly includes at least three first rolling elements. The first movable element rotates around the main axis relative to the first base and the first frame by the first rolling elements
Implementation Method 2
a second rolling assembly disposed between the second movable element and a second movable assembly of the second optical element driving mechanism. The second rolling assembly includes at least three second rolling elements
Implementation Method 3
When the first movable element rotates around the main axis, the first optical element moves relative to the first fixed assembly and the first movable assembly, so as to adjust the amount of external light entering the first optical element driving mechanism
Data Source
AI summary
An optical system is provided and includes a first optical element driving mechanism, which includes a first fixed assembly, a first movable assembly, and a first driving assembly. The first movable assembly is configured to be connected to a first optical element, and the first movable assembly is movable relative to the first fixed assembly. The first movable assembly includes a first movable element. The first drive assembly is configured to drive the first movable assembly to move relative to the first fixed assembly. The first fixed assembly and the first movable assembly are arranged along a main axis, and the first driving assembly is configured to drive the first movable element to move around the main axis.