scholarly journals Study and Design of LED Lighting Systems

2013 ◽  
Vol 6 (1) ◽  
pp. 89-94
Author(s):  
Li Cheng ◽  
Chen Jian Xin ◽  
Li Nong
Keyword(s):  
Led Lighting ◽  
Lighting Systems

An Extended Design Methodology for LED Lighting Systems Including Lifetime Estimation

2016 ◽  
Vol 63 (12) ◽  
pp. 4852-4859 ◽  
Author(s):  
Ronaldo Antonio Guisso ◽  
Matheus Farencena Righi ◽  
Edilson Mineiro Sa ◽  
Rafael Adaime Pinto ◽  
Vitor Cristiano Bender ◽  
...  
Keyword(s):  
Design Methodology ◽  
Lifetime Estimation ◽  
Led Lighting ◽  
Lighting Systems

scholarly journals The Influence of Tunable LED Lighting Systems on Consumer Food Label Perceptions

2016 ◽  
Vol 07 (07) ◽  
pp. 566-576 ◽  
Author(s):  
Greg Clare ◽  
Nahide Hancer
Keyword(s):  
Food Label ◽  
Led Lighting ◽  
Lighting Systems

scholarly journals Arbitrary spectral matching using multi-LED lighting systems

2019 ◽  
Vol 58 (03) ◽  
pp. 1 ◽  
Author(s):  
Aleix Llenas ◽  
Josep Carreras
Keyword(s):  
Spectral Matching ◽  
Led Lighting ◽  
Lighting Systems

scholarly journals Impact of spectral features of common LED lighting systems on TM-30 color indices

2017 ◽  
Vol 25 (3) ◽  
pp. 1824 ◽  
Author(s):  
Reiner Windisch ◽  
Günther Heidel ◽  
Ulrich Binder ◽  
Krister Bergenek
Keyword(s):  
Spectral Features ◽  
Led Lighting ◽  
Color Indices ◽  
Lighting Systems

Using intelligent, interactive LED lighting systems in the development of medical care for the elderly

2017 ◽  
Vol 1 ◽  
pp. 1-1
Author(s):  
Shang-Lin Hsieh ◽  
Chien-Hsuan Huang ◽  
Shou-Chuan Shih ◽  
Wen-Han Chang
Keyword(s):  
Medical Care ◽  
The Elderly ◽  
Led Lighting ◽  
Care For The Elderly ◽  
Lighting Systems

scholarly journals Disturbances Generated by Lighting Systems with LED Lamps and the Reduction in Their Impacts

2019 ◽  
Vol 9 (22) ◽  
pp. 4894 ◽  
Author(s):  
Putz ◽  
Bednarek ◽  
Nawrowski
Keyword(s):  
Power Supply ◽  
Final Part ◽  
Test Results ◽  
Two Stage ◽  
Higher Harmonics ◽  
Led Lighting ◽  
Electrical Systems ◽  
Lighting Systems ◽  
Electromagnetic Disturbances

The paper deals with electromagnetic disturbances in the form of current higher harmonics, which are generated by LED lighting elements. It presents the problems related to the formation and impact of higher harmonics in the electrical systems of commercial facilities. The results of tests and analyses of current distortions for two different LED lamps are included, and these are in reference to the parameters set out in the normal applicable standards. A system was then proposed to improve the quality of energy in the mains of commercial facilities in the form of a two-stage power supply. Tests of the systems with the aforementioned LED lamps were conducted and commented upon after introduction of the two-stage power supply. The final part of the paper contains a summary of the obtained test results.

scholarly journals LED Lighting in Horticulture

HortScience ◽  
2008 ◽  
Vol 43 (7) ◽  
pp. 1947-1950 ◽  
Author(s):  
Robert C. Morrow
Keyword(s):  
Solid State ◽  
Large Scale ◽  
Space Shuttle ◽  
Space Station ◽  
Spectral Composition ◽  
Light Output ◽  
Plant Morphology ◽  
Heat Output ◽  
Led Lighting ◽  
Lighting Systems

Solid-state lighting based on the use of light-emitting diodes (LEDs) is potentially one of the biggest advancements in horticultural lighting in decades. LEDs can play a variety of roles in horticultural lighting, including use in controlled environment research, lighting for tissue culture, and supplemental and photoperiod lighting for greenhouses. LED lighting systems have several unique advantages over existing horticultural lighting, including the ability to control spectral composition, the ability to produce very high light levels with low radiant heat output when cooled properly, and the ability to maintain useful light output for years without replacement. LEDs are the first light source to have the capability of true spectral composition control, allowing wavelengths to be matched to plant photoreceptors to provide more optimal production and to influence plant morphology and composition. Because they are solid-state devices, LEDs are easily integrated into digital control systems, facilitating special lighting programs such as “daily light integral” lighting and sunrise and sunset simulations. LEDs are safer to operate than current lamps because they do not have glass envelopes or high touch temperatures, and they do not contain mercury. The first sustained work with LEDs as a source of plant lighting occurred in the mid-1980s to support the development of new lighting systems to be used in plant growth systems designed for research on the space shuttle and space station. These systems progressed from simple red-only LED arrays using the limited components available at the time to high-density, multicolor LED chip-on-board devices. As light output increases while device costs decrease, LEDs continue to move toward becoming economically feasible for even large-scale horticultural lighting applications.

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