Ophthalmic System Automatic Coherence Gate Adjustment
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Solution Overview
Problem
Existing ophthalmic apparatuses require excessive time for alignment and focus adjustments due to manual interference during coherence gate position adjustment, leading to inefficiencies in the process.
Innovation Solution
A medical system that allows automatic adjustment of the coherence gate position followed by manual focus position adjustment, preventing manual interference during automatic coherence gate position adjustment to streamline the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual adjustment of alignment and focus position is allowed during coherence gate position adjustment, then the examiner can make real-time corrections, but the adjustment time increases indefinitely
Solution Approach 1:
The system performs automatic coherence gate position adjustment as a preliminary action before allowing manual focus position adjustment. The control unit automatically adjusts the coherence gate position based on the OCT tomographic image, and only after this automatic adjustment is complete does it enable manual focus position adjustment. This preliminary automatic adjustment ensures that the foundation is laid correctly, preventing indefinite time increase while maintaining adjustment accuracy.
2Productivity
If automatic coherence gate position adjustment is performed, then adjustment time is reduced, but manual control flexibility is lost
Solution Approach 1:
The adjustment process is segmented into distinct phases: first, automatic coherence gate position adjustment is performed to quickly establish the baseline position; second, manual focus position adjustment is enabled for fine-tuning. This segmentation allows the system to leverage automatic control for speed while preserving manual control flexibility for precision adjustments, resolving the contradiction between productivity and ease of operation.
Solution Approach 2:
The automatic coherence gate position adjustment serves as a preliminary action that prepares the system for subsequent manual focus adjustment. By completing the automatic adjustment first, the system reduces the initial time-consuming task, then allows manual intervention for fine-tuning, thus maintaining both speed and flexibility.
3Productivity
If sequential adjustment (alignment → focus → coherence gate) is enforced, then adjustment process is streamlined, but operator autonomy is reduced
Solution Approach 1:
The system dynamically transitions from automatic control mode during coherence gate position adjustment to manual control mode for focus position adjustment. The control unit automatically adjusts the coherence gate position, then after completion, enables manual focus position adjustment. This dynamic switching maintains process efficiency through enforced sequencing while preserving operator autonomy for final adjustments.
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 configuration reduces the time required for adjustments by ensuring automatic coherence gate position adjustment is completed before allowing manual focus position adjustment, enhancing efficiency and reducing overall processing time.
Implementation Method 1
a beam combining unit configured to combine the return beam and the reference beam to generate a combined beam
Data Source
AI summary
A medical system includes an acquisition unit configured to acquire a tomographic image of an object to be examined based on a combined beam generated by combining a return beam returning from the object to be examined illuminated with a measuring beam and a reference beam corresponding to the measuring beam, a focus position changing unit configured to change a focus position on the object to be examined;an optical-path-length difference changing unit configured to change a difference in optical path lengths between the measuring beam and the reference beam, and a control unit configured to control the optical-path-length difference changing unit so that the difference in the optical path length is within a predetermined range and then receive an instruction to the focus position changing unit to make a change.