Polygonal Optical Module with Integrated Autofocus and Image Stabilization
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Solution Overview
Problem
Miniaturized optical systems in electronic devices face challenges in maintaining image quality due to shock or vibration, necessitating displacement-correction and shake-compensation mechanisms for autofocus and optical image stabilization.
Innovation Solution
An optical system with a polygonal structure comprising a fixed portion, movable portion, and driving mechanism, which includes a driving mechanism to move the movable portion relative to the fixed portion, utilizing magnetic and coil interactions to stabilize and adjust optical paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If optical systems are miniaturized to fit electronic devices, then device compactness is improved, but image quality deteriorates due to shock or vibration
Solution Approach 1:
The optical system is divided into a fixed portion and a movable portion. The movable portion containing optical elements can be independently driven to move along the optical axis for autofocus and perpendicular to the optical axis for optical image stabilization, while the fixed portion remains stationary. This segmentation allows miniaturization while maintaining image quality through independent stabilization control.
2Reliability
If displacement-correction and shake-compensation mechanisms are added to maintain image quality, then image quality is improved, but device complexity increases
Solution Approach 1:
The patent combines autofocus and optical image stabilization functions into a single movable portion with integrated driving mechanisms. The driving mechanism includes first and second driving assemblies that can drive the movable portion along the optical axis and perpendicular to it, respectively. This merging reduces overall system complexity compared to having separate mechanisms for each function.
3Manufacturing precision
If a polygonal structure with specific parallel side configurations is used, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The fixed portion employs an asymmetric polygonal structure where the first side is parallel to the third side, and the second side is parallel to the fourth side, but the first side is not parallel to the second side. This asymmetric configuration provides stable mounting surfaces for the driving mechanism while simplifying manufacturing alignment compared to fully symmetric designs, as it requires only two pairs of parallel sides rather than all sides being equally constrained.
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
Enhances image quality by stabilizing optical elements against shaking or impact, enabling autofocus and optical image stabilization, and facilitating miniaturization of optical systems.
Implementation Method 1
utilizing magnetic and coil interactions to stabilize and adjust optical paths
Data Source
AI summary
An optical system includes an optical module with a main axis is provided. The optical module includes a fixed portion, a movable portion, and a driving mechanism. The movable portion is connected to an optical element and is movable relative to the fixed portion. The driving mechanism drives the movable portion to move relative to the fixed portion. When viewed along a direction that is parallel with the main axis, the fixed portion is a polygonal structure with a first side, a second side, a third side, and a fourth side. The first side is parallel with the third side, the second side is parallel with the fourth side, and the first side is not parallel with the second side.