Ophthalmologic Apparatus 3D Eye Position Matching
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Solution Overview
Problem
Conventional ophthalmologic apparatuses face inaccuracies and inefficiencies in position matching between the eye and the optical system due to separate methods for xy-direction and z-direction alignment, leading to suboptimal image and measurement precision, and require user-operated adjustments that complicate the examination process.
Innovation Solution
An ophthalmologic apparatus with a supporting part, a driver for relative three-dimensional movement, multiple imaging parts for simultaneous anterior eye part photography, and a controller to analyze images and adjust the optical system for precise alignment and tracking, ensuring accurate three-dimensional position matching and reducing user burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate methods are used for xy-direction and z-direction alignment, then position matching can be performed, but measurement precision and image accuracy deteriorate due to errors between the two methods
Solution Approach 1:
The patent combines separate xy-direction alignment and z-direction alignment methods into a unified position matching system. The apparatus integrates multiple imaging parts that simultaneously capture images from different directions, and a single controller processes all alignment operations, eliminating errors between separate methods while maintaining manageable complexity through integrated design.
Solution Approach 2:
The controller is designed to perform multiple functions: it controls both xy-direction alignment and z-direction alignment, processes images from multiple imaging parts, and manages the coordination between the supporting part and optical system. This multi-functional approach allows a single component to handle diverse alignment tasks, improving overall precision without proportionally increasing complexity.
2Ease of operation
If user manually adjusts chin rest, forehead rest, and optical system position, then position matching can be achieved, but examination efficiency decreases and user burden increases
Solution Approach 1:
The apparatus enables automatic position matching where the system self-adjusts the optical system and supporting part positions based on image analysis. The controller automatically processes images from multiple imaging parts, calculates optimal positions, and controls the drivers to achieve alignment without requiring manual user intervention, thereby improving efficiency while maintaining ease of operation.
Solution Approach 2:
The system uses feedback from multiple imaging parts that simultaneously capture images of the eye and supporting part. The controller analyzes these images in real-time, determines the current positional relationship, and adjusts the optical system and supporting part positions accordingly. This closed-loop feedback mechanism automates the adjustment process, reducing user burden and increasing examination efficiency.
3Measurement precision
If conventional single-direction alignment methods are used, then apparatus configuration remains simple, but three-dimensional position matching accuracy deteriorates
Solution Approach 1:
The patent transitions from single-direction alignment to three-dimensional position matching by adding imaging parts that capture images from multiple directions simultaneously. The controller processes these multi-dimensional images to determine the three-dimensional positional relationship between the eye and optical system, enabling accurate alignment in x, y, and z directions. This dimensional expansion improves accuracy while the integrated controller manages the increased complexity.
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
The apparatus achieves high-accuracy position matching and efficient ophthalmologic examinations by aligning the optical axis with the eye's axis and adjusting the distance to a preset working distance, enhancing both precision and user experience.
Implementation Method 1
two or more imaging parts configured to substantially simultaneously photograph an anterior eye part of the eye from different directions
Data Source
AI summary
An ophthalmologic apparatus which is capable of preferably executing position matching between an eye and optical system is provided. An ophthalmologic apparatus of an embodiment includes an examination optical system, supporting part, driver, two or more imaging parts, analyzer and controller. The examination optical system is used for an examination of the eye. The supporting part supports a face of a subject. The driver moves the examination optical system and the supporting part relatively and three-dimensionally. The two or more imaging parts substantially simultaneously photograph an anterior eye part of the eye from different directions. The analyzer obtains a three-dimensional position of the eye by analyzing two or more photograph images acquired by the two or more imaging parts substantially simultaneously. The controller controls the driver based on the three-dimensional position to relatively move the examination optical system and the supporting part.