Ophthalmology Apparatus Position Control to Prevent Interference
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Solution Overview
Problem
In compound-type ophthalmology apparatuses, the second measurer can interfere with the forehead support or have the subject's hand interposed between it and the forehead support, especially when moving the first measurer to measure the inspected eye.
Innovation Solution
An ophthalmology apparatus with a controller that detects specific positions to prevent interference, emitting a warning and stopping movement when the second measurer approaches the forehead support, ensuring safe operation by maintaining appropriate intervals and preventing hand interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the second measurer is positioned upward and forward to prevent contact with the subject's nose or mouth, then the subject's comfort is improved, but the second measurer may interfere with the forehead support or have the subject's hand interposed between it and the forehead support
Solution Approach 1:
The controller detects the position of the apparatus body and emits a warning or stops movement when the second measurer approaches a predetermined distance from the forehead support, providing real-time feedback to prevent interference while allowing optimal positioning for subject comfort
Solution Approach 2:
The system dynamically adjusts the position of the apparatus body relative to the base, allowing the second measurer to be positioned forward for subject comfort while using the controller to prevent it from interfering with the forehead support
2Measurement precision
If the apparatus body is moved to position the first measurer for measurement, then the measurement function is improved, but the second measurer may interfere with the forehead support during movement
Solution Approach 1:
The controller continuously monitors the position of the apparatus body during movement and provides feedback by emitting warnings or stopping movement when the second measurer approaches the forehead support, ensuring safe operation during measurement positioning
Solution Approach 2:
The system establishes predetermined safe distances and positions before movement occurs, allowing the apparatus to be positioned for measurement while preemptively preventing interference with the forehead support through controlled movement limits
Data Source
AI summary
An ophthalmology apparatus includes an apparatus body on which a first measurer and a second measurer are provided and which is movable relative to a base by a driver, a forehead support provided on the base, and a controller. The controller detects a first front position setting a distance between the second measurer and the forehead support as a first interval and a second front position setting a distance between the second measurer and the forehead support as a second interval larger than the first interval, and emits a warning when the apparatus body reaches the second front position in moving the apparatus body to a forehead support side and stops movement of the apparatus body to the forehead support side when the apparatus body reaches the first front position.