Results 11 to 20 of about 6,294 (295)
Applied System InnovationConstant luminous flux lamps are required for ensuring reliable and consistent illumination in various applications, including emergency lighting, outdoor activities, and general use.
Carlos A. Ramos-Paja +2 more
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Changing the direction of the luminaire: A strategy to improve lighting energy efficiency in offices [PDF]
E3S Web of Conferences, 2023 Light environment’s non-visual effects influence people’s health and work efficiency. However, considering non-visual requirements in addition to traditional visual requirements may significantly increase lighting energy consumption.
Zhou Jiayi +3 more
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Remote Sensing, 2020 This article presents the methodology and results of pilot field illuminance measurements using an unmanned aerial vehicle (UAV). The main goal of the study was to quantify the luminous flux emitted in the upper hemisphere (toward the sky) based on ...
Przemyslaw Tabaka
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Energies, 2022 This article deals with options for how to express the luminous flux from outdoor electrical substations of the electric transmission system. Processing of the models of light emissions before and after refurbishment of lighting systems was motivated by ...
Tomas Novak +6 more
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Luminous Flux and CCT Stabilization of White LED Device With a Bilevel Driver
IEEE Photonics Journal, 2018 The optical, color, electrical, and thermal properties of an LED devices are highly dependent on one another. The luminous flux variation and correlated color temperature (CCT) shifting of white LED sources is attributed to luminous efficacy and emission
Huanting Chen +3 more
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Applied System Innovation, 2023 Ambient temperature significantly affects the electrical and light parameters of LEDs, such as forward and reverse current, voltage drop LEDs and luminous flux.
Iryna Belyakova +5 more
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Composite degradation model and corresponding failure mechanism for mid-power GaN-based white LEDs
AIP Advances, 2018 The degradation mechanism of mid-power GaN-based white LEDs were investigated by using the in-situ multi-functional accelerated aging tests. The changes of the luminous flux and the chromaticity shift during the stress time show some correlations.
Haicheng Cao +7 more
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Identifying the Photometric Characteristics and Applicability of Hybrid Solar Lighting
Energies, 2022 The present research aims at promoting the stability and applicability of a hybrid daylighting system combining daylight and artificial light, which eventually enables a constant and pleasant luminous flux of the mixed light delivered by a terminal ...
Hyun-Joo Han +5 more
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Far-field studies on Eu3+-doped lithium aluminoborate glass for LED lighting
Optical Materials: X, 2020 The luminous intensity distribution from luminescent glass disks is investigated. For this, the disks are placed on top of an ultraviolet and a blue LED and the emission from the optically-activated glass is recorded in the far field.
Juliane Steinbrück +2 more
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The formation of objects of the architectural environment with art perforated elements [PDF]
E3S Web of Conferences, 2019 The perforation principle of objects in environmental design is considered in this article, as well as the formation of objects of an architectural environment with the help of the perforation principle, and the interaction of perforated elements with ...
Karakova Tatiana +3 more
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