Results 11 to 20 of about 2,426,647 (254)
Mapping Lightscapes: Spatial Patterning of Artificial Lighting in an Urban Landscape [PDF]
, 2013 Artificial lighting is strongly associated with urbanisation and is increasing in its extent, brightness and spectral range. Changes in urban lighting have both positive and negative effects on city performance, yet little is known about how its ...
Davies, Gemma +5 more
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Wireless LED street lighting system design [PDF]
Journal of Engineering Science and Military Technologies, 2017 This paper presents a wireless sensor network for LED streetlight monitoring and controlling. The proposed system allows substantial energy saving through adequate controlling algorithm. It regulates the streetlight intensity according to the traffic and
Bassam Abo Elftooh +2 more
doaj +1 more source
Application of color temperature controllability in LED lighting environment of highway tunnel [PDF]
E3S Web of Conferences, 2021 In recent years, tunnel LED lighting has been widely used in tunnel lighting engineering because of its advantages such as fast start, low energy consumption and good light color controllability. However, at present, the tunnel LED lighting mostly adopts
Liu Zhiqiang +3 more
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Advanced LED Solid-State Lighting Optics
Crystals, 2020 Light-emitting diodes (LEDs) have been intensively studied for white-light lighting since their luminous efficacy exceeds 50 lm/W. Currently, the luminous efficacy of an LED light tube/bulb is almost above 100 lm/W.
Ching-Cherng Sun +2 more
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IEEE Photonics Journal, 2019 We derive the near-field light intensity distributions of an inorganic LED on its surface and in volumetric space. Our closed-form solution for 3D intensity distribution for a finite-size LED is consistent with Lambert's Cosine Law, which provides
M. Nisa Khan
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Energies, 2021 The aim of the article is to present and analyze the implementation of intelligent lighting within the concept of smart energies and smart cities. Motivation and research hypothesis: Electricity consumption in the world is based largely on non-renewable ...
Konrad Henryk Bachanek +4 more
doaj +1 more source
Analysis and assessment of environmental savings electric energy [PDF]
BIO Web of Conferences, 2023 The article provides an analytical overview of energy savings by switching to LED lighting. The effectiveness of using LED lighting in terms of fire safety in everyday life and financial savings has been proven.
Ataeva A. A. +2 more
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Multi-Azimuth Failure Mechanisms in Phosphor-Coated White LEDs by Current Aging Stresses
Applied Sciences, 2018 We have experimentally analyzed multi-azimuth degradation mechanisms that govern failures of commercially-available high-power (1 Watt) phosphor-coated white (hppc-W) light-emitting diodes (LEDs) covered with peanut-shaped lenses under three current ...
Zhangbao Peng +9 more
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International Journal of Electrochemical Science, 2013 In this article, the quantum dot (QD) light-emitting diodes (QDLEDs) with ZnO electron transport layer (ETL) and MoO3 hole transport layer (HTL) were demonstrated.
Chun-Yuan Huang, Ying-Chih Chen
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Garnet-Type Nanophosphors for White LED Lighting
Frontiers in Materials, 2020 In this article we present a short review of the main wet chemical methods developed for the preparation of Ce3+-doped Y3Al5O12 (YAG:Ce) nanocrystals for their use as nanophosphors in LED lighting technology: combustion, co-precipitation, sol-gel ...
Alexandra Cantarano +2 more
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