Automated Spectacle Frame Positioning in Vision Testing
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Solution Overview
Problem
Existing vision testing systems require manual adjustment of progressive lenses, which is time-consuming and costly, especially when determining the position of spectacle frames relative to the eyes for correcting ametropia.
Innovation Solution
A method within a vision testing system that uses image processing to determine the position of spectacle frames relative to the eyes, eliminating the need for manual measurement by integrating a camera and display device to visualize and record the eyes with the glasses frame, allowing for automatic alignment of progressive lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual measurement and adjustment of spectacle frames is used, then positioning accuracy of progressive lenses can be achieved, but time consumption and operational complexity increase
Solution Approach 1:
The patent replaces manual mechanical measurement methods with an automated optical measurement system. A camera captures images of the spectacle frame and eyes, and image processing algorithms automatically determine the position of the spectacle frame relative to the eyes, eliminating the need for manual measurement while maintaining or improving measurement accuracy.
Solution Approach 2:
The system enables self-service by allowing the spectacle frame positioning to be determined automatically without requiring operator intervention. The camera and image processing system autonomously capture and analyze the spectacle frame position, reducing operational complexity and time consumption.
2Measurement precision
If separate optical detection devices are used for measuring spectacle frame position, then measurement accuracy can be improved, but device complexity and cost increase
Solution Approach 1:
The patent merges the vision testing system with the spectacle frame measurement system into a single integrated device. The same display device and camera used for vision testing are also used to capture and measure the spectacle frame position, eliminating the need for separate optical detection devices while maintaining measurement accuracy.
Solution Approach 2:
The vision testing system is designed with multi-functionality, serving both for vision testing and for measuring spectacle frame position. The camera and image processing capabilities are utilized for multiple purposes: vision assessment, spectacle frame detection, and position determination, reducing the need for additional specialized devices.
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
Enables precise and cost-effective adjustment of spectacle lenses directly within the vision testing system, reducing time and additional device requirements for correcting visual defects.
Implementation Method 1
eyes of the subject being recorded together with a glasses frame of the vision testing system using a camera of a camera device of the display device
Implementation Method 2
The polarization of the screen is regularly used to carry out vision tests in conjunction with measuring glasses or a phoropter
Data Source
Figure 1~3
AI summary
The invention relates to a method for checking the eyes of a subject with a vision testing system and a vision testing system, wherein vision test symbols are visualized to at least one eye of the subject by means of a screen (12) of a display device (11) of the vision testing system (10), wherein the eyes of the subject together with a spectacle frame of the vision testing system are recorded with a camera (13) of a camera device (14) of the display device, wherein the display device is controlled with a control device of the vision testing system, and wherein a position of the spectacle frame relative to the eyes is determined with the control device by means of image processing.