Nanoparticle Notch Filter for Selective Neuroactive Light Attenuation
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Solution Overview
Problem
Current methods for blocking neuroactive wavelengths of light, such as those affecting melanopsin-containing ganglion cells, often impair vision and distort colors due to broad spectrum attenuation, making them undesirable for selective filtering.
Innovation Solution
The use of notch filters containing nanoparticles, which selectively attenuate specific wavelengths by scattering and absorbing light irrespective of the incident angle, allowing for precise regulation of light reaching the eye without significantly impacting the rest of the visible spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If broad spectrum attenuation lenses are used to block neuroactive wavelengths, then photophobia and migraine symptoms are reduced, but vision is impaired and colors are distorted
Solution Approach 1:
The patent segments the light spectrum into neuroactive and non-neuroactive portions by using nanoparticles tuned to specific wavelengths. The nanoparticles selectively target only the harmful neuroactive wavelengths (approximately 480nm for melanopsin-containing ganglion cells) while allowing other wavelengths to pass through, thus blocking harmful factors without degrading overall vision quality or color perception.
Solution Approach 2:
The patent applies local quality by creating a notch filter with a narrow attenuation band at the specific neuroactive wavelength range. The nanoparticles are engineered to have localized optical properties that interact only with specific wavelengths, providing selective attenuation at the targeted wavelength while maintaining high transmission in adjacent spectral regions, thereby preserving vision and color perception.
2Object-affected harmful factors
If broad spectrum attenuation lenses are used to block neuroactive wavelengths, then photophobia and migraine symptoms are reduced, but the filtering is not selective enough
Solution Approach 1:
The patent utilizes parameter changes by adjusting the nanoparticle size, shape, and material composition to precisely control the resonant wavelength. By varying these parameters, the notch filter can be tuned to target specific neuroactive wavelengths with high precision. The localized surface plasmon resonance frequency of the nanoparticles can be adjusted by changing particle dimensions and material properties, enabling selective attenuation at exactly the desired wavelength range.
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 approach effectively reduces exposure to neuroactive wavelengths, minimizing photophobia and related conditions like migraines while maintaining clear vision and color perception, even in low-light conditions.
Implementation Method 1
notch filters containing nanoparticles, which selectively attenuate specific wavelengths by scattering and absorbing light
Implementation Method 2
notch filters containing nanoparticles, which selectively attenuate specific wavelengths by scattering and absorbing light
Data Source
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AI summary
Implementations of the present invention relate to apparatuses, systems, and methods for blocking, attenuating, or filtering neuroactive wavelengths of the visible light spectrum and reducing or preventing the symptoms affiliated with exposure to those wavelengths. Nanoparticles of a predetermined composition, size, and structure are dispersed in a host medium to create an optical notch filter, thereby attenuating only a narrow range of the visible spectrum.