Microscope Field-of-View Control with Magnification-Adaptive Sensitivity
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Solution Overview
Problem
Conventional microscopes face difficulties in adjusting the microscopic field of view due to high or low total visual magnification, leading to inefficient and difficult handling, especially when digital or virtual zoom is applied, causing ROIs to unexpectedly disappear from the user's view.
Innovation Solution
A control device that automatically adapts the response characteristic of the operating device to the current total visual magnification, using a processor to determine and adjust the shift sensitivity based on optical and digital magnification factors, ensuring smooth FOV shifts relative to the sample.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a rapid response characteristic of the operating device is used (low shift sensitivity), then the FOV can be shifted quickly, but the ROI may unexpectedly disappear from the user's view when total visual magnification is high
Solution Approach 1:
The operating device dynamically adjusts its response characteristic based on the current total visual magnification level. When magnification is high, the system automatically reduces shift sensitivity to prevent ROI disappearance, while maintaining faster response at lower magnification levels. This dynamic adaptation resolves the contradiction between speed and ease of operation.
Solution Approach 2:
The system changes the response characteristic parameter of the operating device according to the total visual magnification. By modifying this parameter dynamically, the system optimizes the balance between FOV shift speed and ROI visibility, ensuring smooth tracking of the region of interest across different magnification levels.
2Ease of operation
If a slow response characteristic of the operating device is used (high shift sensitivity), then the ROI remains visible on screen, but the FOV adjustment becomes too coarse for efficient searching
Solution Approach 1:
The operating device transitions from a static response characteristic to a dynamic one that adapts to the current magnification level. This allows the system to provide fine-grained control at high magnification while maintaining efficient searching capability at lower magnification levels, resolving the contradiction between ease of operation and productivity.
Solution Approach 2:
The response characteristic parameter is adjusted based on total visual magnification. At high magnification, the parameter increases shift sensitivity for smooth ROI tracking, while at lower magnification, the parameter decreases sensitivity to enable faster, more efficient FOV adjustment and searching.
3Measurement precision
If digital or virtual zoom is applied to increase total visual magnification, then the ROI can be enlarged for detailed observation, but the FOV shift becomes too large causing ROI to disappear from view
Solution Approach 1:
The system incorporates feedback from the total visual magnification level to automatically adjust the operating device response characteristic. This feedback mechanism ensures that when digital or virtual zoom increases magnification, the system simultaneously reduces shift sensitivity to maintain smooth ROI tracking and prevent disappearance from view.
Solution Approach 2:
The response characteristic parameter of the operating device is changed in response to changes in total visual magnification caused by digital or virtual zoom. This parameter adaptation allows the system to maintain appropriate FOV shift sizes across different zoom levels, preserving both observation detail and ease of operation.
Data Source
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AI summary
A control device (102) for a microscope (100) comprises an actuator (108) configured to shift a microscopic field of view relative to a sample (112), an operating device (106) configured to be operated by a user to control the actuator (106) in accordance with a response characteristic determining a shift sensitivity according to which the field of view is shifted relative to the sample (112) in response to a user operation of the operating device (106), and a processor (104) configured to determine a total visual magnification based on which the field of view is visualized by the microscope (100) to the user and to control the response characteristic of the operating device (106) based on the total visual magnification.