Eye Therapy Light Source With Sunlight-Like Spectrum
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Solution Overview
Problem
Modern lifestyles often result in inadequate sunlight exposure, leading to issues such as myopia and eye stress due to prolonged indoor activities and reduced outdoor work, which existing light sources fail to adequately address.
Innovation Solution
A light source emitting a spectrum similar to sunlight, with a wavelength range of 380 nm to 780 nm, overlapping at least 55% of the normalized solar spectrum, and adjustable color temperature from 2600K to 7000K, used in conjunction with a light emitting device that can be mounted on the head or used as a table lamp, to provide therapeutic light similar to natural sunlight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional light sources are used for indoor lighting, then energy consumption is reduced and safety is improved by avoiding UV exposure, but the spectrum does not match sunlight and therapeutic effects are lost
Solution Approach 1:
The patent applies parameter changes by carefully selecting and adjusting the emission wavelengths of multiple LEDs (violet 405nm, blue 450nm, cyan 495nm, green 530nm, yellow-green 560nm, red 630nm) to reconstruct a sunlight-like spectrum in the visible range while excluding UV wavelengths. This transforms the spectral parameters of artificial light to match natural sunlight's therapeutic benefits without its harmful UV component.
2Object-affected harmful factors
If people engage in indoor activities instead of outdoor work, then safety and comfort are improved, but sunlight exposure is insufficient leading to myopia and eye stress
Solution Approach 1:
The patent applies copying by creating an artificial light source that replicates the spectral characteristics of natural sunlight. By combining multiple LEDs with wavelengths that correspond to sunlight's spectrum (405nm-630nm visible range), the invention produces a copy of sunlight's therapeutic properties that can be used indoors, allowing people to maintain safety and comfort while receiving adequate light therapy.
3Illumination intensity
If a full spectrum LED including UV is used, then the spectrum more closely matches sunlight, but harmful ultraviolet exposure occurs
Solution Approach 1:
The patent applies the extraction principle by deliberately excluding the UV portion of the spectrum from the LED combination. While a complete sunlight spectrum would include UV wavelengths below 400nm, the invention extracts only the beneficial visible wavelengths (405nm-630nm) that provide therapeutic effects, leaving out the harmful UV component. This is achieved by selecting LEDs that emit starting from 405nm rather than including lower wavelength UV sources.
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 light source effectively reduces eye stress and has the potential to prevent or treat myopia by providing a spectrum similar to natural sunlight, while avoiding harmful ultraviolet ranges, thus offering a therapeutic effect similar to sunlight exposure without the risks associated with outdoor UV exposure.
Implementation Method 1
configured to emit light having a wavelength range from about 380 nm to about 780 nm, and has a spectrum area that overlaps at least about 55% of an area of a normalized solar spectrum
Data Source
AI summary
A light source for eye wellness configured to emit light having a wavelength range from 380 nm to 780 nm, and has a spectrum area that overlaps at least 55% of an area of a normalized solar spectrum, in which a valley wavelength of the light has a deviation equal to or less than 0.15 form the normalized solar spectrum in the wavelength range from 460 nm to 490 nm, and a color temperature of the light is in a range of 2600K to 7000K.