Image Shake Correction Device Drive Phase Synchronization
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Solution Overview
Problem
Existing image shake correction technologies face challenges in maintaining optical performance during image stabilization, particularly when the drive phases of multiple lenses are not coincident, leading to deterioration in image quality, especially during moving image capture.
Innovation Solution
An image shake correction device comprising first and second correction units, each capable of independent movement along the optical axis, with a control unit that synchronizes their operation by adjusting for drive deviations between the units, ensuring synchronized driving and improved optical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple correction units are driven separately, then design flexibility is improved, but drive phase deviation occurs leading to optical performance deterioration
Solution Approach 1:
The control unit receives position information from both correction units and compares their actual positions with target positions. Based on this feedback, it calculates correction amounts and adjusts drive commands to synchronize the drive phases of the multiple correction units, thereby preventing optical performance deterioration while maintaining separate drive mechanisms for design flexibility
Solution Approach 2:
The system changes the drive phase parameters of the correction units dynamically. The control unit adjusts the drive phase of each correction unit based on their respective drive characteristics, allowing synchronization despite different mechanical properties. This enables separate drive mechanisms to operate in phase coincidence
2Reliability
If multiple correction units are driven in synchronization, then optical performance is maintained, but control complexity increases
Solution Approach 1:
The control unit applies different control strategies to different correction units based on their individual characteristics. Each correction unit receives customized drive commands tailored to its specific drive phase and mechanical properties, allowing synchronized operation without requiring a completely complex unified control system
Solution Approach 2:
The control unit pre-calculates the required drive phases and positions for each correction unit based on shake correction requirements. By determining target positions in advance and adjusting drive commands proactively, the system achieves synchronization without requiring complex real-time coordination mechanisms
3Reliability
If correction units are located at different positions in optical axis, then correction effectiveness is improved, but drive phase coincidence becomes difficult to maintain
Solution Approach 1:
The control unit dynamically adjusts drive phase parameters for each correction unit based on their positions in the optical axis. By changing the phase, frequency, or amplitude parameters of drive commands to match each unit's location and characteristics, the system maintains drive phase coincidence despite spatial separation, thereby preserving both correction effectiveness and synchronization
Data Source
AI summary
An image shake correction device comprising a first image shake correction lens and a second image shake correction lens for correcting an image shake of a subject image caused by shaking is provided. The image shake correction device executes correcting the image shake caused by the drive of the first image shake correction lens and the second image shake correction lens after correcting a drive deviation between the first image shake correction lens and the second image shake correction lens.