Blue-Violet Light Exposure Detection for Eye Damage Warning
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Solution Overview
Problem
Existing technologies fail to detect and quantify harmful blue and violet light emissions from LED-based devices, which pose a significant risk to eye health, and do not provide user-specific warnings or adjustments to mitigate exposure.
Innovation Solution
A method and device for detecting and quantifying blue and violet light emissions using a portable electronic device or computer system, which includes a light detector, signal conditioning circuit, analog-to-digital converter, processor, and customizable software to calculate exposure thresholds and warn users of excessive light levels, adjusting settings or turning off sources as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED-based devices are used for lighting and display, then energy efficiency and brightness are improved, but harmful blue and violet light emissions increase causing eye damage
Solution Approach 1:
The patent converts the harmful blue light emissions into a useful function by using them to excite fluorescent materials that emit longer, safer wavelengths. The harmful high-energy blue light (380-500nm) is transformed into beneficial green (500-560nm) and red (600-680nm) light through fluorescence conversion, thereby eliminating the harmful effect while maintaining the energy efficiency benefits of LED technology
Solution Approach 2:
The patent changes the spectral parameters of LED light by introducing fluorescent conversion layers that shift the emission spectrum. By adjusting the composition and properties of fluorescent materials (such as Y3Al5O12:Ce, Lu3Al5O12:Ce, or CaAlSiN3:Eu), the patent modifies the wavelength distribution to reduce blue light content while enhancing green and red wavelengths, thus altering the harmful parameter profile
2Object-affected harmful factors
If yellow filters are implanted in the eye to block short wavelengths, then protection from blue light is improved, but surgical risks and complexity increase
Solution Approach 1:
Instead of placing the protective filter inside the eye (intraocular lens), the patent inverts the approach by placing the fluorescent conversion layer at the light source (LED device). This external filtering approach eliminates the need for invasive surgical procedures while achieving the same protective effect against blue light
Solution Approach 2:
The patent introduces fluorescent materials as an intermediary between the LED blue light source and the human eye. These fluorescent converters (such as phosphors or quantum dots) act as a mediator that absorbs harmful blue light and re-emits it as safer wavelengths, providing protection without requiring direct intervention in the eye structure
3Illumination intensity
If transparent intraocular lenses are implanted to replace the crystalline, then vision clarity is improved, but natural yellow pigmentation protection is lost
Solution Approach 1:
The patent applies protective action before the light reaches the eye by incorporating fluorescent conversion layers in the LED device itself. This preliminary filtering of blue light prevents the need for the crystalline lens to provide both clarity and protection functions, allowing transparent intraocular lenses to maintain clarity while the external LED structure provides the protective filtering function
4Adaptability or versatility
If blocking elements are designed to separate specific wavelengths, then selectivity of light filtering is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges multiple filtering functions into a single fluorescent conversion layer integrated with the LED structure. Instead of using separate complex filtering systems, the fluorescent materials (such as phosphors doped with rare earth elements) combine absorption of blue light and emission of green and red light in one unified component, simplifying the overall device while maintaining wavelength selectivity
Solution Approach 2:
The patent employs composite fluorescent materials that combine multiple functionalities within a single material system. Examples include phosphors with specific host matrices (YAG:Ce, LuAG:Ce) or quantum dot compositions that simultaneously achieve blue light absorption and controlled green/red emission, providing wavelength selectivity through material composition rather than complex structural arrangements
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
Effectively alerts users to harmful light exposure, adjusts device settings to reduce risk, and provides personalized protection against blue and violet light damage, enhancing preventive healthcare and public health management.
Implementation Method 1
a portable electronic device or computer system, which includes a light detector, signal conditioning circuit, analog-to-digital converter, processor
Implementation Method 2
The mechanism consists of the blocking of wavelengths, allowing the passage of other wavelengths... a blocking element of the short wavelengths is a device designed to separate, pass or delete a group of objects or things of the total mixture
Data Source
Figure 1A~1B
Figure 2A~2C
Figure 3
AI summary
Method, device (100) and system (200) for detection and quantification of the variation of eye damage caused by the blue and violet light of the visible spectrum comprising the steps of detecting the incident radiation on an individual's visual system; calculating the incident radiation within the range between 380 and 500 nm; establishing at least one threshold of incident radiation within said range; detecting if at least one threshold established for said range has been exceeded; warning of the excess of at least one threshold; measuring the exposure time to incident radiation; and inferring in the different ocular structures of an individual the effect of incident radiation and warning of such effect.