Glare Testing Device for Visual Performance Assessment
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Solution Overview
Problem
Existing glare testing devices lack the ability to assess visual performance and discomfort under varying levels of veiling glare, particularly under photopic and mesopic light conditions, and fail to identify performance limits in healthy adults.
Innovation Solution
A glare testing device and method that utilize an electronic system to produce varying levels of glaring light, allowing for precise quantification of visual performance and discomfort, and can be adjusted to simulate different lighting conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard dark refracting lane testing is used, then visual acuity measurement is simple and quick, but it does not reflect visual performance in bright light or glare conditions
Solution Approach 1:
The glare testing device dynamically adjusts the intensity of the glare source to create multiple lighting conditions (photopic and mesopic) within a single testing session, transforming the static dark refracting lane into a dynamic environment that simulates varying real-world lighting scenarios
Solution Approach 2:
The device combines multiple testing functions into one system: it can test visual acuity under dark conditions, photopic glare conditions, and mesopic glare conditions, making it a universal testing platform that addresses multiple assessment needs simultaneously
2Device complexity
If commercially available glare testers with single or few intensity levels are used, then device complexity is reduced, but the ability to identify performance limits in healthy adults is compromised
Solution Approach 1:
The system changes the intensity parameter of the glare source across multiple discrete levels, allowing precise measurement of visual performance thresholds by gradually increasing glare intensity until performance limits are reached
Solution Approach 2:
The patent replaces manual or mechanical intensity adjustment with an electronic control system that precisely regulates LED glare source intensity, enabling fine-grained control and measurement of performance limits through electrical parameter adjustment rather than mechanical means
3Ease of operation
If glare testing is performed only under photopic conditions, then testing procedure is simplified, but assessment completeness under mesopic conditions is lost
Solution Approach 1:
The testing procedure periodically alternates between photopic and mesopic glare conditions, systematically presenting different lighting environments in sequence to comprehensively assess visual performance across multiple operational regimes
Solution Approach 2:
The system dynamically switches between photopic and mesopic lighting conditions by adjusting the glare source intensity and background illumination levels, creating a flexible testing environment that adapts to assess different visual performance aspects
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 device effectively assesses visual performance and discomfort under diverse glare conditions, providing a more comprehensive evaluation than current systems, and is capable of identifying performance limits in healthy adults.
Implementation Method 1
The electronic device comprises a plurality of light emitting diodes (LEDs) mounted to a circuit board
Data Source
AI summary
A glare source device, a glare test system and methods that assesses visual performance and discomfort under varying levels of glare under varying lighting conditions is provided.