Piezoelectric Lens Stabilization for Hand Tremor Correction
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Solution Overview
Problem
Existing photographing apparatus modules in portable devices face challenges in effectively stabilizing images against user-induced vibrations, such as hand tremors, which affect image quality and require complex structures to achieve miniaturization and improved performance.
Innovation Solution
A photographing apparatus module with an image stabilization function, incorporating a lens module and image sensor module, where piezoelectric devices are used to apply driving forces in multiple directions to correct for vibrations, utilizing a lattice-shaped arrangement of piezoelectric devices on a flexible substrate to transmit driving forces and adjust the lens module's position relative to the image sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional image stabilization techniques are used with multiple sensors and complex shifting mechanisms, then image stabilization performance is improved, but device complexity and size increase
Solution Approach 1:
The patent combines the image stabilization function with the lens module by integrating piezoelectric devices directly into the lens assembly. The piezoelectric elements are embedded within the lens module structure, allowing the lens to shift position for stabilization while maintaining a compact, unified design rather than separate stabilization components
Solution Approach 2:
The patent replaces complex mechanical sensor systems and multi-component stabilization mechanisms with piezoelectric actuators. These piezoelectric devices convert electrical signals directly into mechanical displacement of the lens, eliminating the need for separate vibration sensors, motor-driven mechanisms, and multiple shifting components
2Adaptability or versatility
If multiple piezoelectric devices are arranged in a lattice pattern on a flexible substrate, then driving force application in multiple directions is improved, but manufacturing complexity increases
Solution Approach 1:
The flexible substrate with lattice-patterned piezoelectric devices serves multiple functions simultaneously: it provides structural support for the piezoelectric elements, enables multi-directional actuation through the lattice pattern, and allows for integrated fabrication of the entire lens module assembly. This single component performs what would otherwise require multiple separate parts
Solution Approach 2:
The use of a flexible substrate allows the piezoelectric device array to be manufactured using flexible printing or deposition techniques rather than rigid semiconductor fabrication. This parameter change in substrate rigidity enables different manufacturing methods that may be more suitable for producing complex lattice patterns of piezoelectric elements
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 solution enhances image stabilization by effectively correcting for hand tremors and other vibrations, improving image quality while maintaining a compact and lightweight design, thus addressing the need for improved performance and miniaturization in portable devices.
Implementation Method 1
piezoelectric devices which are spaced apart from one another in the first direction... piezoelectric devices which are spaced apart from one another in the second direction
Data Source
AI summary
An example photographing apparatus module includes an image sensor module; a lens module shifted with respect to the image sensor module in a first direction or a second direction that is perpendicular to an optical axis direction of incident light; and an image stabilization module arranged in the image sensor module and applying a driving force to the lens module.