LED Light Sources for Avian Spectral Sensitivity and Bacterial Control
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Solution Overview
Problem
Agricultural facilities face challenges in maintaining a disease-free environment due to the close proximity of animals, which can lead to rapid disease spread and significant economic losses, and existing lighting systems do not effectively account for the spectral sensitivity of animals and bacteria, potentially promoting bacterial growth.
Innovation Solution
The development of light sources that emit wavelengths corresponding to the spectral sensitivity of diurnal avians, using LED technology to provide light primarily in bands not absorbed by animal visual pigments, while maintaining a white appearance to humans, and adjusting intensity and color temperature to simulate natural light conditions, thereby reducing bacterial growth and enhancing animal welfare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional artificial lighting is used in agricultural facilities, then animals can be illuminated for production purposes, but the lighting may promote bacterial growth and fail to account for animal spectral sensitivity
Solution Approach 1:
The patent applies local quality by creating lighting systems with specific spectral compositions tailored to different needs: blue-enriched light (465-495 nm) for bacterial control in housing areas, and red-enriched light (610-750 nm) for feeding areas to stimulate appetite. This spatial variation in spectral quality addresses both bacterial growth prevention and animal production needs simultaneously
Solution Approach 2:
The patent utilizes parameter changes by adjusting the spectral composition, intensity, and color temperature of lighting systems. LED technology enables dynamic modification of wavelength distribution and luminous output to match animal spectral sensitivity at different production stages while preventing bacterial growth through selective wavelength suppression
2Object-affected harmful factors
If blue wavelength light is used to control bacterial growth, then bacterial proliferation is reduced, but animal welfare and productivity may be compromised without spectral balance
Solution Approach 1:
The patent implements periodic action through programmed lighting sequences that alternate between blue-enriched wavelengths for bacterial control and red-enriched wavelengths for appetite stimulation. This temporal variation ensures both bacterial suppression and maintenance of animal welfare across different time periods
Solution Approach 2:
The lighting system achieves universality by integrating multiple functions into a single system: bacterial control through blue light, appetite stimulation through red light, and overall animal welfare support. This multi-functional approach eliminates the need for separate lighting systems for different purposes
3Productivity
If red wavelength light is used to stimulate appetite, then feed consumption increases, but bacterial growth may be promoted without proper spectral control
Solution Approach 1:
The patent applies segmentation by dividing the lighting system into functionally distinct zones: blue-enriched lighting in housing and resting areas for bacterial control, and red-enriched lighting in feeding areas for appetite stimulation. This spatial segmentation allows each wavelength type to perform its optimal function without interfering with the other
4Illumination intensity
If conventional lighting systems are used, then general illumination is provided, but spectral sensitivity of animals is not optimized for production
Solution Approach 1:
The patent utilizes parameter changes by dynamically adjusting spectral composition, color temperature, and intensity based on animal type, production stage, and time of day. LED technology enables precise control of wavelength distribution to match animal spectral sensitivity, optimizing both illumination and production efficiency simultaneously
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 bacterial growth, improves animal health and productivity, and enhances biosecurity by using light sources tailored to the spectral sensitivity of diurnal avians, creating a more efficient and safe agricultural environment.
Implementation Method 1
the light source may include a light-emitting diode (LED) light source
Data Source
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, the light source may output light primarily in wavelength bands that are not substantially absorbed by colored oil droplets and/or visual pigment in at least one type of cone in the eye of a diurnal avian. In some embodiments, the light source may include a light-emitting diode (LED) light source. Exemplary light sources may output spectral components to illuminate diurnal avians with local maxima of intensity at wavelengths that substantially correspond to local maxima in a spectral sensitivity visual response characteristic of the diurnal avians.