Full Spectrum LED Grow Light System With Segmented Spectral Control
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Solution Overview
Problem
Current LED grow light systems are inefficient in replicating the full spectrum of sunlight or HPS lamp output, leading to suboptimal plant growth due to unbalanced spectral emission, and they lack the ability to tailor light output to specific plant needs, resulting in excessive energy consumption and heat generation.
Innovation Solution
An LED grow light system combining multiple LEDs with specific output spectra (4000K, orange, green/yellow, and red) to mimic the full spectrum of sunlight at low input power, coupled with an enhanced cooling system using a heatsink and heat transfer pipes for efficient heat dissipation, ensuring optimal plant growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If HPS lamps are used to provide high output intensity in certain visible light spectrums, then plant growth is promoted, but the spectral light output is unbalanced with excessive intensity in orange-red range causing excessive leaf and stem elongation
Solution Approach 1:
The patent segments the broad HPS lamp spectrum into multiple discrete LED wavelength sources (430-470nm blue, 540-575nm green, 585-615nm yellow-orange, 620-650nm red). Each LED type targets specific plant absorption peaks, allowing independent control of spectral components to achieve balanced illumination that promotes photosynthesis without excessive vegetative growth.
Solution Approach 2:
The patent applies local quality by assigning different LED types to specific spatial locations on the grow light array, with each LED type emitting targeted wavelengths that correspond to specific plant physiological needs. This creates localized spectral zones that collectively provide balanced full-spectrum illumination.
2Use of energy by moving object
If LED grow lights use blue and red LEDs to mimic sunlight spectrum, then energy efficiency is improved, but the green spectrum is omitted causing incomplete replication of full sunlight spectrum
Solution Approach 1:
The patent segments the sunlight spectrum into four distinct LED wavelength ranges (blue 430-470nm, green 540-575nm, yellow-orange 585-615nm, red 620-650nm), with each segment corresponding to specific plant chlorophyll and carotenoid absorption peaks. This segmentation maintains LED energy efficiency while achieving spectral completeness through targeted wavelength selection.
Solution Approach 2:
The patent creates a composite LED system combining four different LED types with distinct spectral characteristics. This composite approach synthesizes a full-spectrum output that mimics sunlight by integrating the emission spectra of multiple LED materials, each optimized for specific wavelength ranges that collectively cover the photosynthetically active radiation spectrum.
3Ease of operation
If multiple LED types with different wavelengths are combined to replicate full spectrum, then spectral balance is improved, but device complexity increases
Solution Approach 1:
The patent organizes the complex multi-LED system into four distinct functional segments (blue, green, yellow-orange, red LED arrays), with each segment independently controlled and optimized for specific wavelength ranges. This segmentation simplifies the overall system design by creating modular units that can be independently managed while collectively achieving full-spectrum balance.
4Use of energy by moving object
If HPS lamps are used to provide high PAR emission, then photosynthesis is promoted, but heat generation increases requiring more cooling
Solution Approach 1:
The patent replaces the thermal-based HPS lamp system with solid-state LED technology, substituting the mechanical/thermal energy conversion process with electroluminescence. This substitution dramatically reduces heat generation while maintaining high PAR emission, as LEDs convert electrical energy directly to light with minimal thermal byproduct.
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 system achieves efficient plant growth by mimicking the sun or HPS lamp spectrum with reduced energy consumption and heat management, offering comparable growth results to HPS lamps while being more energy-efficient and environmentally friendly.
Implementation Method 1
a heatsink in heat transfer relation with the circuit board for drawing heat energy away from the circuit board and the plurality of LEDs during operation
Implementation Method 2
a plurality of heat dissipating fins to facilitate heat dissipation from the circuit board and/or the plurality of LEDs
Data Source
AI summary
The LED grow light system includes at least one of a first LED that includes a 4,000 k LED having a first light output, at least one of a second LED having a second light output in about an orange spectra, at least one of a third LED having a third light output in about a green/yellow spectra, and at least one of a fourth LED having a fourth light output in about a red spectra. Each of the first light output, the second light output, the third light output, and the fourth light output combine into an aggregate light output that mimics a full spectrum of sunlight at a relatively efficient input power of about 600-650 watts.