Imaging Device Sensor Holder Mechanical Fixing Mechanism
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Solution Overview
Problem
Existing imaging devices with shake correction functions that move image pickup elements or lenses in a plane orthogonal to the optical axis often experience image quality deterioration due to the image pickup elements or lenses being held in a floating state, leading to significant displacement beyond the correctable range under external forces like large acceleration or high volume environments, causing the shake correction function to fail and resulting in image blurring.
Innovation Solution
The implementation of a mechanical fixing mechanism that automatically fixes the image pickup element or lens holder at a predetermined position based on signals indicating external forces, such as acceleration or sound levels, to prevent excessive displacement and maintain image quality during shake correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the image pickup element is held in a floating state for shake correction, then shake correction function is enabled, but image quality deteriorates under large external forces
Solution Approach 1:
The fixing mechanism transitions between two states: a released state allowing the image pickup element to move for shake correction, and a fixed state mechanically constraining it when external forces exceed thresholds. This dynamic switching enables the system to adapt its degree of freedom based on operating conditions, resolving the contradiction between enabling shake correction and preventing image quality deterioration under large forces.
2Ease of operation
If the image pickup element is allowed to move freely for shake correction, then shake correction is effective, but displacement beyond correctable range occurs under large acceleration
Solution Approach 1:
The fixing mechanism applies preliminary constraint to the image pickup element when external forces are detected to exceed predetermined thresholds. By preemptively preventing displacement before it can occur, the system avoids the harmful effect of exceeding the correctable range, while allowing free movement within acceptable limits for normal shake correction operation.
3Reliability
If mechanical fixing is always applied to prevent displacement, then image quality is maintained, but shake correction function cannot operate
Solution Approach 1:
The fixing mechanism dynamically switches between fixed and released states based on detected external force levels. When external forces are within normal ranges, the mechanism releases the image pickup element to enable shake correction operation. When external forces exceed predetermined thresholds, the mechanism engages to maintain image quality. This conditional switching resolves the contradiction between maintaining image quality and enabling shake correction functionality.
Data Source
AI summary
An imaging device includes an image pickup element that captures an object image to generate image data, a sensor holder that holds the image pickup element, a sensor driver that moves the sensor holder in a plane orthogonal to an optical axis, a fixing mechanism that mechanically fixes the sensor holder at a predetermined position, and a controller that controls the fixing mechanism based on a signal indicating a degree of displacement of the image pickup element due to an external force.