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Hölker, Andreas; Doulos, Lambros; Schroer, Sibylle; Topalis, Frangiskos |
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Title |
Sustainable outdoor lighting for reducing energy and light waste |
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Conference Article |
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2016 |
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9th International Conference Improving Energy Efficiency in Commercial Buildings and Smart Communities |
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202-213 |
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lighting design; lighting technology; light pollution |
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The lack of lighting planning for internal and external illumination of buildings contributes to wasting energy and to the issue of light pollution. This will be demonstrated with research from the ground and by analysis of images, taken with detectors on satellites, the International Space Station or planes. Besides large area floodlighting from airports or sports facilities, facade illumination is the most important contributor. The effects of malpractice versus sustainable lighting planning solutions will be demonstrated with some examples in cities like Bonn, Strasbourg, Athens and Thessaloniki. Further examples in the countryside will demonstrate lighting practice in the German star park Biosphere Reserve Rhön. Facade lighting planning, considering optimal alignment, the intensity and the colour quality of the illumination, will contribute to reducing light pollution and thus waste of energy and will increase human comfort at the same time.
Experience shows that unilateral promoting energy efficiency will finally result in more extended use of energy, which is known as rebound effect. In addition the small size and long lifetime of the modern solid state lighting will result in an increased use even in remote places thereby emitting more artificial light into the natural night. This does not only affect the energy use, but also the biological rhythms of animals and human beings.
More interdisciplinary criteria for a sustainable lighting with reduced light pollution will be discussed based on the observations including data provided by the EU-network “Loss of the Nightâ€-Network (EU-COST Action ES1204 LoNNe). |
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JRC Confernce and workshop reports |
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LoNNe @ schroer @ |
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1573 |
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Author |
Herie Park, Hyensou Pak, Chan-Su Lee |
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Title |
Prospect of Automotive Lighting Systems of Self-Driving Vehicles |
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Journal Article |
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2017 |
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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers |
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31 |
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8 |
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1-8 |
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Lighting |
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Light sources and lighting technology adapted to vehicles have been developed to assist drivers’ safety and to perceive other vehicles and pedestrians during the nighttime. As autonomous vehicles driven by data obtained from sensors are shown up, the role of the automotive lighting system should be reconsidered for the future traffic environment. This paper presents the future prospects of automotive lighting systems adapted to self-driving vehicles. It describes a current state of automotive lighting systems, and roles of the lighting systems suitable for self-driving vehicles. It also deals with the related topics of automotive lightings such as energy management, light pollution, security, and hybrid lighting systems for the road that combine with computer-and human-drivers during a transition period. |
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LoNNe @ kyba @ |
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1742 |
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Author |
Jin-Joo Lee, Seong-Sik Yoo, Ho-Seok Kang, Dong-Hee Kim, Jin-Ho Nam, Hyun-Ji Kim, Hoon Kim |
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Title |
A Research on Visual Performance at Different Ages Depending on Color Temperature of Headlights |
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2017 |
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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers |
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31 |
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8 |
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40-48 |
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Lighting |
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Under night-time driving conditions, both cones and rods in eye’s retina simultaneously act to influence mesopic vision in two areas: central and peripheral visions. However, as people age, the amount of light received as well as the color temperature perceived by the human eyes also change. This research, through simulations and scaled down experiments with various headlight color temperatures and two levels of fixed brightness, deals with differences in ability to detect and identify obstacles by the subjects in their 20’s and 50’s.
According to the results obtained from the experiments on peripheral vision, subjects in their 20’s detected the obstacles more quickly at the combined color temperature of 3,000K+4,500K than at the single color temperature of 4,500K, and likewise at 3,000K+5,500K than at 5,500K; this tendency was significantly more noticeable for the subjects in their 50’s. As for the central vision, the results showed that there were no significant differences due to color temperature between the subjects in their 20’s and those in their 50’s. Moreover, the landolt ring experiment conducted under low luminance yielded higher percentage of correct answers at combined color temperatures. |
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LoNNe @ kyba @ |
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1743 |
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Author |
John D. Bullough |
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Opinion: Will road lighting wither? |
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2017 |
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Lighting Research & Technology |
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49 |
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672 |
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Commentary; Lighting |
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LoNNe @ kyba @ |
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1761 |
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John Bullough |
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Factors Affecting Sign Visibility, Conspicuity, and Legibility: Review and Annotated Bibliography |
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2017 |
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Interdisciplinary Journal of Signage and Wayfinding |
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1 |
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2 |
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2-25 |
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Lighting |
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This paper summarizes published research studies, technical reports and codes and standards related to the visibility (i.e., conspicuity and legibility) of signage. In the summary that follows, publications are grouped and discussed according to several different topics. First, the typographic and symbolic characteristics of signs and the information they carry are described (e.g., letter size, font selection, etc.); second, photometric, colorimetric and temporal properties of signs as they affect visibility; finally, environmental considerations (e.g., daytime versus nighttime viewing, whether a sign is located in a rural or urban area, etc.) as they influence sign design are reviewed. Annotated summaries of each publication in the literature review are included at the end of this paper. |
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LoNNe @ kyba @ |
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1762 |
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