Mobile Device Eye Refraction Using Structured Illumination
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Solution Overview
Problem
Conventional methods for determining eye refraction require large spaces and are often expensive, limiting the flexibility and cost-effectiveness of refraction determination devices.
Innovation Solution
A mobile computer device with a display, processor, and memory that can display images for refraction determination, allowing adjustable background and infield luminance settings to accommodate different visual ranges, and equipped with structured illumination and a camera unit for objective refraction measurement, enabling both objective and subjective refraction assessments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional refraction determination systems are used, then measurement precision is maintained, but device complexity and cost increase
Solution Approach 1:
The mobile computer device performs multiple functions including displaying refraction test images, recording pupil responses via camera, providing structured illumination, and processing refraction data. This multi-functional integration replaces multiple separate conventional devices with a single mobile device, reducing overall system complexity while maintaining measurement precision
Solution Approach 2:
The system uses a camera to capture optical images of the pupil that serve as copies of the actual optical responses. These captured images are then processed to determine refraction parameters, replacing the need for complex direct optical measurement systems while preserving measurement accuracy
2Measurement precision
If conventional refraction determination systems are used, then measurement precision is maintained, but device cost increases
Solution Approach 1:
The invention utilizes a mobile computer device, which is a mass-produced, relatively inexpensive consumer electronic device, replacing expensive specialized medical refraction equipment. The mobile device's camera, display, and processor are standard components that can be manufactured at low cost through economies of scale
Solution Approach 2:
By using the mobile device's existing camera to capture optical images instead of requiring specialized optical sensors, the system leverages already-manufactured inexpensive components. The camera acts as a copy mechanism to record optical responses without needing expensive dedicated detection hardware
3Extent of automation
If conventional refraction determination systems are used, then objective measurement is achieved, but device complexity and space requirements increase
Solution Approach 1:
The system merges the illumination function, image capture function, and processing function into a single mobile device. The display provides structured illumination, the camera captures the optical response, and the processor analyzes the data to determine refraction objectively. This consolidation eliminates the need for separate illumination devices, cameras, and computers that would be required in conventional automated systems
Solution Approach 2:
The mobile computer device serves multiple functions: it displays structured illumination patterns, captures pupil images via its camera, processes the images to detect optical responses, and calculates refraction parameters. This multi-functionality achieves automated objective measurement without requiring a complex dedicated apparatus
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 solution provides a cost-effective, flexible, and accurate method for determining eye refraction using a mobile device, capable of adapting to various lighting conditions and visual ranges, and facilitating both objective and subjective measurements.
Implementation Method 1
the image includes a structured illumination for illuminating the eye for an objective refraction determination
Implementation Method 2
a camera unit for recording a pupillary light reflex in response to the structured illumination
Implementation Method 3
an objective measurement of the refraction of the eye is effected
Data Source
AI summary
Mobile computer devices and systems for refraction determination of an eye, for example for objective refraction determination and/or subjective refraction determination, are provided. Here, a display of the mobile computer device can be driven to display an image for refraction determination.