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LEUKOS The Journal of the Illuminating Engineering Society of North America

Subject Areas: Atomic and Molecular Physics, and Optics
Publisher: Taylor & Francis - Taylor & Francis
ISSN: 1550-2724
SJR: 31

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Journal Article

The Position Index of Overhead LED Sources Under Different Spectral Power Distributions and Background Luminances

Abboushi, Belal; Miller, Naomi J.; Rodriguez-Feo Bermudez, Eduardo; Irvin, Lia; Royer, Michael

2024 LEUKOS The Journal of the Illuminating Engineering Society of North America

doi:10.1080/15502724.2024.2327863

The position index was developed by Luckiesh and Guth in 1949 and is widely used in discomfort glare models to account for the position of the glare source when predicting the presence and magnitude of visual discomfort. The applicability of this index to modern LED sources has not been...
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Journal Article

Study in a Virtual Night Environment of the Influence of the Travel Mode on the Observation Angle of Illuminated Road Surfaces

Lebouc, Laure; Richard, Paul; Boucher, Vincent; Greffier, Florian; Nicolaï, Aurélia

2024 LEUKOS The Journal of the Illuminating Engineering Society of North America

doi:10.1080/15502724.2024.2328210

We present a study of the influence of the travel modality (pedestrian, cyclist, motorist) on the observation angle of road surfaces in a nighttime situation under public lighting. This study is based on the simulation of an urban environment where the user travels at different speeds (6, 12 and...

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