Dual-Actuator Camera Module for Fast AF and OIS Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing camera modules face challenges in performing auto focusing at high speed and preventing image shake due to spatial restrictions and the need for optical image stabilization, particularly in ultra-slim and ultra-small devices with high pixel density.
Innovation Solution
A camera module design incorporating a fixed part, a moving part, and two driving parts with different maximum speeds to facilitate optical image stabilization and auto focusing, allowing for high-speed focusing and reduced image shake without increasing device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of pixels of the image sensor increases, then the resolution increases, but the amount of light received by each pixel decreases causing more severe image shake
Solution Approach 1:
The camera module is divided into functionally independent segments: a first driving part for auto-focusing operations and a second driving part for optical image stabilization. This segmentation allows each driving part to be optimized for its specific function, enabling the system to achieve both high resolution and image shake correction simultaneously without interference between functions.
2Reliability
If an actuator for OIS is disposed around the lens, then image stabilization is achieved, but the space for tilting or moving the lens is restricted
Solution Approach 1:
The camera module is divided into functionally independent segments: a first driving part for auto-focusing operations and a second driving part for optical image stabilization. This segmentation allows each driving part to be optimized for its specific function, enabling the system to achieve both high resolution and image shake correction simultaneously without interference between functions.
Solution Approach 2:
The patent employs dual driving parts operating in different dimensional spaces: the first driving part moves the lens assembly along the optical axis for auto-focusing, while the second driving part tilts the lens assembly for optical image stabilization. This dimensional separation allows both functions to coexist without spatial conflict.
3Illumination intensity
If the size of the lens is increased to increase the amount of receiving light, then the light receiving capability improves, but the space occupied by the actuator for OIS increases
Solution Approach 1:
The camera module is divided into functionally independent segments: a first driving part for auto-focusing operations and a second driving part for optical image stabilization. This segmentation allows each driving part to be optimized for its specific function, enabling the system to achieve both high resolution and image shake correction simultaneously without interference between functions.
Solution Approach 2:
The patent employs dual driving parts operating in different dimensional spaces: the first driving part moves the lens assembly along the optical axis for auto-focusing, while the second driving part tilts the lens assembly for optical image stabilization. This dimensional separation allows both functions to coexist without spatial conflict.
4Device complexity
If a single driving part is used for both AF and OIS, then the device complexity is reduced, but the speed of auto focusing and image stabilization cannot be optimized simultaneously
Solution Approach 1:
The camera module is divided into functionally independent segments: a first driving part for auto-focusing operations and a second driving part for optical image stabilization. This segmentation allows each driving part to be optimized for its specific function, enabling the system to achieve both high resolution and image shake correction simultaneously without interference between functions.
Solution Approach 2:
The patent implements dynamic control with two independently controllable driving parts, allowing the system to adaptively switch between auto-focusing and optical image stabilization modes as needed, optimizing performance for different operational requirements.
Data Source
AI summary
A camera module is provided, including: a fixed part; a moving part which moves relative to the fixed part in an optical axis direction; a first driving part which moves the moving part within a first maximum speed; and a second driving part which moves the moving part within a second maximum speed, wherein the first driving part and the second driving part move the moving part in the optical axis direction, and the second maximum speed is greater than the first maximum speed.