Combined Ocular Refraction and Frame Parameter Measurement
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Solution Overview
Problem
Current methods require separate devices and instruments for measuring ocular refraction and geometrical-morphological parameters, which are time-consuming and restrictive, often conducted in a single posture and viewing position without accounting for natural vision conditions.
Innovation Solution
A combined device that simultaneously measures ocular refraction and geometrical-morphological parameters using a lighting system and image capture system, allowing for measurements in different gaze positions and proximity values, including far and near vision, without the need for multiple instruments or restrictive postures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate instruments are used to measure ocular refraction and frame parameters, then measurement precision is maintained for each parameter, but measurement time increases and device complexity increases
Solution Approach 1:
The patent combines separate measurement functions into a single integrated device that simultaneously measures ocular refraction parameters and frame geometric-morphological parameters using shared optical and imaging systems, eliminating the need for multiple separate instruments and reducing total measurement time
2Measurement precision
If separate instruments are used for ocular refraction and frame parameter measurement, then each measurement can be optimized, but device complexity and number of instruments increase
Solution Approach 1:
The measuring device is designed with multi-functional capabilities, using a single optical system and image capture system that can perform both ocular refraction measurement and frame parameter measurement through different measurement modes and processing algorithms
Solution Approach 2:
The patent merges multiple measurement functions into one integrated device, combining ocular refraction measurement capabilities with frame geometric-morphological parameter measurement capabilities in a single instrument
3Device complexity
If measurements are performed in a single posture and viewing position, then device complexity is reduced, but adaptability to different visual conditions decreases
Solution Approach 1:
The device enables dynamic measurement capabilities by allowing measurements to be performed in multiple different postures and viewing positions, adapting to various visual conditions such as distance vision and near vision through adjustable measurement configurations
4Loss of information
If multiple instruments are used for comprehensive measurement, then measurement completeness improves, but ease of operation decreases
Solution Approach 1:
The patent integrates multiple measurement functions into a single device that can perform both ocular refraction and frame parameter measurements simultaneously, eliminating the need for the wearer to move between multiple instruments and simplifying the operational workflow
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
This solution reduces measurement time, eliminates the need for multiple devices, and allows for accurate assessment of visual behavior in natural conditions, enhancing the precision and convenience of ocular refraction and frame parameter measurements.
Implementation Method 1
an illumination system for generating an illumination beam (34) directed towards the wearer's eyes
Implementation Method 2
The clip (2) includes retroreflective markers operating in the infrared range
Data Source
Figure 1~3
Figure 4~6B
Figure 7A~8C
AI summary
The invention relates to a device for measuring ocular refraction and a geometric-morphological parameter of an individual, comprising: a gaze-stimulating target placed so as to stimulate the gaze of the individual in a posture associated with a proximity value and a sight axis; an illuminating system able to generate at least one illuminating beam in the direction of the eyes of the individual; an image-capturing system; and a computer able to receive at least one first image captured by the image-capturing system. According to the invention, the image-capturing system is able to acquire an image of part of the face surrounding the eyes of the individual, and the computer is able to extract, from the acquired image, a first measurement of a glazing parameter and a first measurement of objective ocular refraction by refraction of the illuminating beam on the eyes of the individual in the given posture.