Multi-Axis MEMS Actuator for Compact Camera Image Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current miniaturized actuators for camera packages face challenges in providing compact, low-power, and cost-effective solutions for multi-axis movement within the constraints of portable devices, imaging devices, and medical instruments, where traditional actuators are insufficient in terms of size and efficiency.
Innovation Solution
A multi-axis MEMS assembly is developed, comprising an in-plane MEMS actuator and an out-of-plane MEMS actuator, where the out-of-plane actuator is a multi-morph piezoelectric actuator with a bending piezoelectric design, enabling linear three-axis movement by coupling a moveable stage to a rigid frame assembly through deformable piezoelectric portions, and an optoelectronic device is integrated to provide image stabilization and autofocus functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional actuators are used for multi-axis movement in camera packages, then sufficient movement capability is achieved, but the device size becomes too large and power consumption increases
Solution Approach 1:
The patent combines multiple actuator functions into a single integrated MEMS assembly. The in-plane MEMS actuator handles X-Y axis movement for image stabilization, while the out-of-plane MEMS actuator handles Z-axis movement for autofocus. This merging of multiple traditional actuators into one compact unit reduces overall size while maintaining full multi-axis movement capability.
Solution Approach 2:
The MEMS actuator assembly is designed to perform multiple functions within a single device. It provides both image stabilization (through in-plane movement) and autofocus (through out-of-plane movement), making it a universal actuation system that replaces what would traditionally require separate dedicated actuators for each function.
2Power
If traditional actuators are used for camera packages, then adequate power delivery is achieved, but power consumption becomes excessive
Solution Approach 1:
The patent replaces traditional mechanical actuators with MEMS (micro-electrical-mechanical systems) actuators. This substitution enables precise electrical control of mechanical movement at the micro-scale, significantly reducing power consumption while maintaining adequate power delivery for actuation. The MEMS technology allows for efficient energy conversion and controlled actuation with minimal power requirements.
3Volume of moving object
If miniaturized actuators are used to reduce size, then compactness is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the actuator system into distinct functional modules: an in-plane MEMS actuator for X-Y movement and an out-of-plane MEMS actuator for Z-axis movement. This segmentation allows each module to be optimized and manufactured separately using standard MEMS fabrication techniques, then integrated into a complete assembly. The modular approach simplifies manufacturing compared to attempting to create a monolithic multi-axis actuator.
Solution Approach 2:
The patent employs a nested structure where the in-plane MEMS actuator and out-of-plane MEMS actuator are integrated in a compact arrangement. The out-of-plane actuator is positioned to work in conjunction with the in-plane actuator, creating a nested configuration that maximizes space utilization. This nesting enables compact form factor while maintaining ease of manufacture through standardized integration processes.
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 solution enables compact, low-power, and cost-effective linear three-axis movement, enhancing the performance of camera packages by integrating image stabilization and autofocus capabilities within the constraints of miniaturized camera systems.
Implementation Method 1
The out-of-plane MEMS actuator may include a multi-morph piezoelectric actuator
Data Source
AI summary
A multi-axis MEMS assembly includes a micro-electrical-mechanical system (MEMS) actuator configured to provide linear three-axis movement. The micro-electrical-mechanical system (MEMS) actuator includes: an in-plane MEMS actuator, and an out-of-plane MEMS actuator. An optoelectronic device is coupled to the micro-electrical-mechanical system (MEMS) actuator. The out-of-plane MEMS actuator includes a multi-morph piezoelectric actuator.