Ophthalmologic Apparatus Dynamic Alignment Restriction
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Solution Overview
Problem
Existing ophthalmologic apparatuses face instability in alignment due to involuntary eye movements during inspection, leading to unnecessary alignment actions and reduced throughput.
Innovation Solution
An ophthalmologic apparatus with a moving unit, a first positioning unit for alignment within a first moving area, and a restriction unit to limit the moving area to a second, smaller area when alignment conditions are met, ensuring stable continuous automatic alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the acquiring portion moves over the entire movable range for alignment, then the alignment can be performed, but the alignment becomes unstable when the eye moves largely
Solution Approach 1:
The patent dynamically adjusts the moving area based on the eye's position and movement characteristics. When the eye is detected to be moving largely (abnormal movement), the system restricts the moving area to a second moving area smaller than the first moving area, thereby stabilizing alignment by avoiding unnecessary movements over the entire range while still maintaining adequate alignment capability within the restricted area.
2Reliability
If the alignment start is disabled when entering the alignment start range, then the alignment can be prevented from starting accidentally, but the alignment control becomes difficult to continue stably
Solution Approach 1:
The patent performs preliminary detection of the eye's position and movement characteristics before initiating alignment. By detecting whether the eye is moving largely in advance, the system pre-establishes whether to use the first or second moving area, thereby preparing the alignment control logic to continue stably without accidental starts while maintaining ease of operation through proper preliminary assessment.
3Productivity
If the acquiring portion continues alignment action when the eye moves largely, then the alignment can be maintained, but the alignment action becomes unnecessary and unstable
Solution Approach 1:
The patent continuously monitors the eye's position and movement during alignment and uses this feedback to determine whether to restrict the moving area. When the eye is detected to be moving largely, the feedback mechanism triggers restriction to the second moving area, thereby eliminating unnecessary alignment actions and improving both productivity through reduced movement and reliability through stabilized alignment control.
Data Source
AI summary
Provided is an ophthalmologic apparatus that can realize alignment with high stability when performing continuous automatic alignment. The ophthalmologic apparatus includes: an acquiring portion which acquires specific information of an eye to be inspected; a moving unit which moves the acquiring portion relatively to the eye to be inspected; a first positioning unit which performs positioning between the acquiring portion and the eye to be inspected by controlling the moving unit to move the acquiring portion relatively to the eye to be inspected within a first moving area; and a restriction unit which restricts a moving area of the acquiring portion by the moving unit to a second moving area smaller than the first moving area by controlling the moving unit, when a position relationship between the acquiring portion and the eye to be inspected satisfies a first condition by the first positioning unit.