Ophthalmologic Microscope Digital Zoom OCT Parameter Coordination
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Solution Overview
Problem
Current ophthalmologic microscope systems lack the ability to seamlessly integrate digital zoom functionality with optical coherence tomography (OCT) scans, requiring manual adjustment of projection conditions which can be complex and time-consuming.
Innovation Solution
An ophthalmologic microscope system is designed with a magnification changing unit that processes image sensor output to adjust display magnification, an OCT data generation unit to process interference light, and a condition setting unit that automatically sets OCT scan parameters based on the magnification change, linking digital zoom with OCT scans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of projection conditions is used when changing magnification, then flexibility and control are maintained, but operation complexity and time consumption increase
Solution Approach 1:
The system automatically adjusts OCT projection conditions (scan area, scan density, focal depth) based on the current magnification level without requiring manual user input. The control unit receives magnification change signals and autonomously modifies the corresponding OCT parameters, making the system self-adjusting and eliminating complex manual operations.
Solution Approach 2:
The system establishes a feedback loop where the control unit continuously monitors magnification changes and automatically adjusts projection conditions in response. When magnification is changed, the system detects this change and feeds back by modifying OCT parameters accordingly, ensuring coordinated adjustment between microscope viewing and OCT scanning.
2Productivity
If automatic adjustment of OCT parameters is implemented, then operation time is reduced, but system complexity increases
Solution Approach 1:
The control unit integrates multiple control functions by combining microscope magnification control and OCT projection condition control into a single coordinated system. This merging allows automatic adjustment of OCT parameters based on magnification changes, reducing operation time while managing system complexity through unified control architecture.
Solution Approach 2:
The control unit acts as an intermediary between the magnification changing unit and the OCT scanning system. It receives signals from the magnification control, processes the relationship between magnification and projection conditions, and automatically adjusts OCT parameters accordingly, enabling automatic adaptation without direct complex interactions between subsystems.
3Measurement precision
If digital zoom is used to magnify image portions, then observation detail is improved, but coordination with OCT scan area becomes complex
Solution Approach 1:
The system pre-establishes correspondence relationships between magnification levels and OCT projection conditions. Before actual observation, the control unit is programmed with the relationships between different zoom levels and appropriate scan areas/densities, allowing automatic coordination when digital zoom is applied without complex real-time calculations.
Solution Approach 2:
The system automatically changes OCT projection parameters (scan area size, scan density, focal depth) in response to digital zoom magnification changes. When the user applies digital zoom to magnify specific image portions, the control unit detects the magnification level and adjusts corresponding OCT parameters to maintain optimal coordination between the magnified view and the scan region.
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 integration allows for automatic adjustment of OCT scan parameters with magnification changes, simplifying the process and ensuring optimal imaging quality without user intervention.
Implementation Method 1
detect interference light generated from returning light of the measurement light from the patient's eye and the reference light
Data Source
AI summary
An illumination system of an ophthalmologic microscope system projects illumination light onto a patient's eye. A light receiving system guides returning light of the illumination light to an image sensor. A display controller controls a display device to display an image obtained by the image sensor. A magnification changing unit changes display magnification of the image. An interference optical system detects interference light generated from returning light of measurement light from the eye and reference light. An optical scanner is used to scan the eye with the measurement light. An OCT data generation unit processes a detection result of the interference light to generate data. A condition setting unit sets a projection condition of the measurement light in accordance with change in the display magnification. An OCT controller controls the interference optical system and/or the optical scanner based on the projection condition.