Biologically-Corrected LED Lamp with Color Filter
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Solution Overview
Problem
Conventional light sources, such as white LED lamps, contribute to melatonin suppression and circadian rhythm disruptions due to their blue light components, which exacerbate sleep disorders and other biological system issues, while filtering out all blue light compromises color rendering properties.
Innovation Solution
A biologically-corrected LED lamp is designed with a color filter that modifies the light output to increase spectral opponency, minimizing melatonin suppression while maintaining commercially acceptable color rendering properties by filtering some blue light and enhancing the yellow component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If all blue light (420 nm-480 nm) is filtered out to minimize melatonin suppression, then biological impact is reduced, but color rendering properties deteriorate and photopic response is negatively affected
Solution Approach 1:
The patent applies partial filtering of blue light rather than complete elimination. The color filter is designed to selectively reduce the blue light component (420-480 nm) while preserving other wavelengths, achieving a balance between minimizing melatonin suppression and maintaining acceptable color rendering properties
Solution Approach 2:
The patent modifies the spectral parameters of the LED light source by introducing a color filter with specific transmission characteristics. The filter's transmission curve is optimized to attenuate blue wavelengths while maintaining transmission in other regions, thereby changing the overall spectral distribution to reduce biological impact while preserving visual quality
2Object-affected harmful factors
If blue light component is reduced to improve sleep patterns, then circadian rhythm disruption is minimized, but color temperature and visual performance are compromised
Solution Approach 1:
The patent applies local quality modification by using a color filter with non-uniform transmission across the spectrum. The filter selectively targets specific wavelength regions (blue 420-480 nm) for attenuation while maintaining or enhancing transmission in other regions, creating a spatially differentiated spectral output that addresses circadian disruption without uniformly compromising color temperature
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 solution effectively reduces melatonin suppression and circadian rhythm disruptions while preserving color rendering indices above 70, ensuring the lamp has minimal biological impact on users and maintains acceptable color temperature and rendering properties.
Implementation Method 1
a color filter, which modifies the light produced by the lamp's LED chips, to increase spectral opponency and minimize melatonin suppression
Implementation Method 2
a color filter, which modifies the light produced by the lamp's LED chips
Data Source
AI summary
A light-emitting diode (LED) lamp for producing a biologically-corrected light. In one embodiment, the LED lamp includes a color filter, which modifies the light produced by the lamp's LED chips, to increase spectral opponency and minimize melatonin suppression. In doing so, the lamp minimizes the biological effects that the lamp may have on a user. The LED lamp is appropriately designed to produce such biologically-correct light while still maintaining commercially acceptable color temperature and color rending properties. Methods of manufacturing such a lamp are provided, as well as equivalent lamps and equivalent methods of manufacture.