Ophthalmic Alignment Control Under Contact Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ophthalmic apparatuses require manual alignment by an examiner familiar with the operation, especially when the examination unit comes into contact with the examinee, posing safety and operational challenges.
Innovation Solution
An ophthalmic apparatus with a detection unit to sense the approach of the examination unit to the examinee, enabling automatic alignment control that adjusts movement range and speed to ensure safety and ease of operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual alignment is performed by an examiner, then alignment can be achieved, but the operation becomes complex and safety risks increase when contact is detected
Solution Approach 1:
The system performs automatic alignment without requiring examiner intervention. The examination unit autonomously adjusts its position and orientation to align with the subject eye, eliminating the need for manual operation and reducing operational complexity while maintaining alignment capability
Solution Approach 2:
The system continuously detects the position and contact status of the examination unit relative to the subject eye, and uses this feedback information to automatically adjust alignment. When contact is detected, the system modifies alignment behavior based on real-time feedback, enabling safe automatic operation without complex manual procedures
2Speed
If automatic alignment control is performed with full movement range, then alignment speed is high, but safety is compromised when the approach unit contacts the examinee
Solution Approach 1:
The system dynamically adjusts the movement characteristics of the approach unit based on real-time detection. When contact is detected, the system changes from high-speed full-range movement to restricted movement with reduced speed and range, optimizing both alignment efficiency and safety without requiring complete cessation of operation
Solution Approach 2:
The system performs preliminary detection of the examinee's face position and potential contact zones before executing full automatic alignment. By anticipating potential contact hazards and preparing restricted movement parameters in advance, the system can quickly switch to safe operation mode while maintaining overall alignment progress
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An ophthalmic apparatus for examining a subject eye includes an examination means configured to examine the subject eye, an approach unit provided with the examination means, a detection means configured to detect an approach of the approach unit approaching an examinee, and a control means configured to perform, when the approach is detected by the detection means, automatic alignment control different from that performed when the approach is not detected.