White Light Source Module With Cyan-Red Spectral Balancing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current white LEDs do not effectively address visual fatigue and myopia prevention, as they lack spectral design for these purposes, and adolescents are particularly sensitive to blue light, which can be detrimental to their eye health if exposed excessively, especially at night.
Innovation Solution
A light source module that includes a blue light generation portion, a cyan light generation portion, a yellow-green light generation portion, and a red light generation portion, with the red light generation portion utilizing two additional light emitters to increase energy in the 630-690 nm wave band, reducing blue light exposure by incorporating cyan light, and maintaining a white light color temperature of 3000K-6000K with specific spectral intensity ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional white LED lighting is used, then general illumination is provided, but it lacks spectral design for myopia prevention and visual fatigue relief
Solution Approach 1:
The patent combines multiple light generation portions (blue, cyan, yellow-green, red) into a single integrated light source module. This merging approach enables comprehensive spectral coverage for myopia prevention while maintaining a unified device structure, resolving the contradiction between functional adaptability and device complexity
Solution Approach 2:
The patent uses composite fluorescent materials with specific peak wavelengths (yellow-green: 560-580nm, red: 610-650nm) combined with blue LED chips to create a composite light source. This composite material approach enables precise spectral control for health benefits while using commercially available materials, balancing adaptability and manufacturing feasibility
2Illumination intensity
If blue light intensity is increased for illumination, then brightness is improved, but myopia risk increases due to excessive blue light exposure
Solution Approach 1:
The patent applies local quality by enhancing specific wavelength regions (cyan 470-500nm, yellow-green 560-580nm, red 610-650nm) while controlling blue light content. This localized spectral enhancement provides necessary brightness while minimizing harmful blue light exposure, resolving the contradiction between illumination intensity and blue light safety
Solution Approach 2:
The patent changes the spectral distribution parameters by using fluorescent conversion to shift energy from blue to longer wavelengths. The blue LED chips (430-470nm) excite yellow-green and red fluorescent materials, transforming the spectral parameters to reduce blue light hazard while maintaining overall brightness through combined emission
3Reliability
If red light energy is increased to prevent myopia, then myopia control effectiveness is improved, but color accuracy may be affected
Solution Approach 1:
The patent uses composite fluorescent materials with carefully selected peak wavelengths (yellow-green: 560-580nm, red: 610-650nm) to enhance red light energy for myopia prevention. The composite approach balances enhanced red content with other spectral components to maintain acceptable color rendering while achieving therapeutic red light dosing
Solution Approach 2:
The patent modifies spectral parameters by enhancing red light energy content through fluorescent conversion. The red fluorescent materials emit at 610-650nm to increase retinal dopamine production and prevent myopia, while the overall spectral balance is maintained through coordinated emission from multiple light generation portions
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 module reduces blue light exposure, increases red light energy in the 630-690 nm wave band, and maintains a white light color, effectively relieving visual fatigue and potentially preventing myopia by promoting better eye health through optimized spectral energy distribution.
Implementation Method 1
a blue light generation portion emitting a first color light with a peak wavelength in a blue light wave band of 430～470 nm
Implementation Method 2
a cyan light generation portion emitting a second color light with a peak wavelength in a cyan light wave band of 470～510 nm
Implementation Method 3
a yellow-green light generation portion emitting a third color light with a peak wavelength in a yellow-green light wave band of 510～600 nm
Implementation Method 4
a red light generation portion emitting a fourth color light with a peak wavelength in a red light wave band of 600～780 nm
Data Source
AI summary
A light source module includes a blue light generation portion, a cyan light generation portion, a yellow-green light generation portion and a red light generation portion. The red light generation portion includes a first additional light emitter and a second additional light emitter, the first additional light emitter emits a light having a main emission peak in the red light wave band, the second additional light emitter emits a light having a secondary emission peak in the red light wave band, and a spectral intensity of the secondary emission peak is 30.0%-80.0% of a spectral intensity of the main emission peak. An emitted light of the light source module is a white light with a color temperature of 3000K˜6000K, and in a CIE1931 color space, a distance between the emitted light and a blackbody locus BBL is duv=−0.007-0.007.