Non-invasive Visual Comfort Device Using Optical Eye Sensing
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Solution Overview
Problem
Current methods for determining visual discomfort are either invasive and expensive or overly dependent on subjective user judgment, lacking accuracy and practicality for widespread use.
Innovation Solution
A non-invasive, cost-effective device with a contactless sensing unit and controller that remotely acquires signals from the eye area to objectively assess visual comfort by analyzing responses to light stimuli, such as pupil and eyelid movements, without the need for electrodes or physician intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If objective methods with electrodes are used to determine visual discomfort, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent replaces the mechanical/electrical system of electrodes and physical contact with an optical sensing system. The sensing unit uses optical principles to detect eye characteristics remotely, eliminating the need for invasive electrode placement while maintaining objective measurement capability.
Solution Approach 2:
The patent introduces an intermediary optical field as a mediator between the sensor and the eye. Instead of direct electrical contact through electrodes, the system uses optical signals to interact with the eye area, allowing remote detection of visual comfort characteristics without physical intrusion.
2Device complexity
If subjective methods are used to determine visual discomfort, then device complexity is reduced, but measurement precision deteriorates due to dependency on user judgment
Solution Approach 1:
The system enables the eye to essentially measure itself by detecting its own optical characteristics. The sensing unit captures light reflected from or transmitted through the eye area, allowing the eye's own properties to provide the measurement data without requiring external electrodes or subjective user reporting.
Solution Approach 2:
The patent substitutes subjective human judgment with an objective optical measurement system. Instead of relying on users to report their comfort levels, the system uses optical sensing to objectively detect physiological responses of the eye to light stimuli.
3Measurement precision
If invasive electrode methods are used, then measurement precision is improved, but ease of operation deteriorates due to requirement for physician intervention
Solution Approach 1:
The system is designed to be self-operating without requiring skilled medical personnel. The sensing unit automatically captures optical data from the eye area, and the processor independently analyzes the data to determine visual comfort, eliminating the need for physician intervention in electrode placement and data interpretation.
Solution Approach 2:
The optical field serves as an intermediary that enables the system to function independently of medical expertise. The optical signals automatically interact with the eye area and carry information that the processor can interpret without requiring skilled intervention, making the system easy to operate for opticians and consumers.
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 accurate, objective, and non-invasive assessment of visual discomfort, allowing for the determination of light sensitivity thresholds and improved visual comfort evaluation, making it suitable for use by opticians and users without requiring complex equipment or medical expertise.
Implementation Method 1
a transmitter for transmitting a first signal toward said at least one eye area, and a receptor for receiving a second signal corresponding to the first signal reflected by said at least one eye area
Data Source
AI summary
A device and a method for determining a change in the visual comfort of a user, the device including at least one light source for stimulating at least one eye of the user, a sensing circuit facing at least one eye area of the user when the device is worn by the user, the sensing circuit being configured to remotely acquire at least one signal representative of at least one characteristic of said at least one eye area, and a controller configured to determine a change in the visual comfort of the user depending on a variation of said at least one signal acquired by the sensing circuitry.