Avian-Specific LED Lighting for Poultry Facilities
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Solution Overview
Problem
Conventional lighting systems in poultry facilities do not effectively mimic natural light spectrums, leading to potential stress and inefficiencies in avian development, as they fail to align with the spectral sensitivity of diurnal avians, and do not efficiently conserve energy by reducing wavelengths not absorbed by avians.
Innovation Solution
A lighting system utilizing LED light sources that emit wavelengths corresponding to the local maxima in spectral sensitivity of diurnal avians, with adjustable intensity and color temperature to simulate natural light transitions, while maintaining a white appearance to humans, using selective wavelength conversion and modulation techniques to bypass unnecessary energy absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional lighting systems (incandescent or fluorescent) are used to illuminate poultry facilities, then general illumination is provided, but energy is wasted at wavelengths not absorbed by avian photoreceptors and spectral sensitivity is not optimized
Solution Approach 1:
The patent segments the broad spectrum of conventional light into specific wavelength bands that correspond to avian photoreceptor sensitivity peaks. LED modules emit discrete wavelength ranges (violet 380-420nm, blue 420-500nm, cyan 480-520nm, green 500-560nm, yellow-green 560-600nm, red 600-680nm) matched to different cone and rod cell types, eliminating energy waste at non-absorbed wavelengths while optimizing avian visual response
Solution Approach 2:
The patent changes the spectral parameters of illumination by using LED modules with specifically selected wavelength outputs. Each LED module is chosen to emit light at wavelengths that maximize absorption by specific avian photoreceptors. The system can dynamically adjust intensity and spectral composition to match natural sunlight characteristics at different times of day, optimizing both energy efficiency and avian welfare
2Object-affected harmful factors
If lighting intensity and color are adjusted to optimize avian welfare, then avian stress is reduced and development is improved, but system complexity increases
Solution Approach 1:
The patent implements dynamic lighting control where intensity and spectral composition are automatically adjusted throughout the day to replicate natural sunlight patterns. The system transitions from full intensity at dawn/dusk to reduced intensity during midday, and adjusts color temperature to match natural environmental changes. This dynamic adaptation reduces avian stress from unnatural constant lighting while using programmable control to manage system complexity
Solution Approach 2:
The lighting system serves multiple functions simultaneously: it provides illumination for avian vision, replicates natural circadian rhythm cues, enables human workers to see facility conditions, and allows for programmable welfare optimization. By using LED technology with可调 spectral output, a single system achieves what would otherwise require multiple separate lighting systems
3Illumination intensity
If full-spectrum lighting is used to ensure human visibility, then workers can see facility conditions, but energy is supplied at wavelengths not useful to avians
Solution Approach 1:
The patent applies local quality by providing different spectral characteristics for different avian photoreceptor types within the same facility. Different LED modules target different wavelength ranges corresponding to specific cone and rod cell sensitivities. The system can create localized spectral zones that optimize for particular avian needs while maintaining overall visibility for human workers through the combined output of all modules
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 enhances avian welfare and growth by aligning light exposure with natural physiology, promotes energy efficiency by reducing unnecessary energy supply, and allows for smooth, time-controlled lighting adjustments to minimize stress and simulate natural conditions.
Implementation Method 1
the light source may include a light-emitting diode (LED) light source
Implementation Method 2
US 2002/003233 A1 discloses a light emitting diode device that performs phosphor conversion on all of the primary radiation emitted by a light emitting structure
Data Source
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AI summary
Various apparatus and associated methods involve a light source that provides light at wavelengths that substantially correlate to local maxima in the spectral sensitivity of a diurnal avian. In an illustrative example, A method of illuminating diurnal avians with artificial light sources (120), the method comprising a composite source: generating a first light with a first wideband light source; shifting energy content of the first light at one or more selected wavelengths to different wavelengths to create a second light comprising a second spectral content having at least two local maxima in relative intensity; and, supplying the second light comprising the second spectral content to a substantially enclosed habitat for diurnal avians located in a livestock facility (100); characterized in that the second spectral content has at least one local maximum in relative intensity at a wavelength within 15 nm of a wavelength at which a predetermined characteristic visual spectral response (605) of the diurnal avian has a local maximum, wherein one local maximum in relative intensity of the second spectral content is at a wavelength below 400 nm.