Download or read book Circadian Lighting Design in the LED Era written by Maurizio Rossi (Professor of industrial design) and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores how lighting systems based on LED sources have the ability to positively influence the human circadian system, with benefits for health and well-being. The opening chapters examine the functioning of the human circadian system, its response to artificial lighting, potential health impacts of different types of light exposure, and current standards in circadian photometry. A first case study analyzes the natural lighting available in an urban interior, concluding that it is unable to activate the human circadian system over the entire year. Important original research is then described in which systems suitable for artificial circadian lighting in residential interiors and offices were developed after testing of new design paradigms based on LED sources. Readers will also find a detailed analysis of the LED products available or under development globally that may contribute to optimal artificial circadian lighting, as well as the environmental sensors, control interfaces, and monitoring systems suitable for integration with new LED lighting systems. Finally, guidelines for circadian lighting design are proposed, with identification of key requirements.

Download or read book Circadian Lighting Design in the LED Era written by Maurizio Rossi and published by Springer. This book was released on 2019-02-06 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores how lighting systems based on LED sources have the ability to positively influence the human circadian system, with benefits for health and well-being. The opening chapters examine the functioning of the human circadian system, its response to artificial lighting, potential health impacts of different types of light exposure, and current researches in circadian photometry. A first case study analyzes the natural lighting available in an urban interior, concluding that it is unable to activate the human circadian system over the entire year. Important original research is then described in which systems suitable for artificial circadian lighting in residential interiors and offices were developed after testing of new design paradigms based on LED sources. Readers will also find a detailed analysis of the LED products available or under development globally that may contribute to optimal artificial circadian lighting, as well as the environmental sensors, control interfaces, and monitoring systems suitable for integration with new LED lighting systems. Finally, guidelines for circadian lighting design are proposed, with identification of key requirements.

Download or read book New Frontiers for Design of Interior Lighting Products written by Andrea Siniscalco and published by Springer Nature. This book was released on 2021-05-27 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the single components that commonly constitute luminaires for interiors, describing their operating principles, families, strengths and weaknesses. It opens with the product classification and main standard requirements. The following chapters describe the different components: light sources, power supplies, thermal dissipation techniques, control technologies, optical systems. The description focuses on the most recent technologies to allow the reader to consider a product design capable of confronting future lighting scenarios. The book provides a simple path addressed to all those who want to try their hand at designing luminaires for interiors, even without a specific engineering background.

Download or read book Syncing with the Sky written by Nathan Altenberg and published by . This book was released on 2019 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of daylight in the built environment is preferred to artificial sources as it provides visual comfort and satisfaction along with significant energy savings. Daylight is also the primary source for stimulus that establish a healthy day/night cycle, or circadian rhythm. With the discovery of photosensors within the eye that are specifically linked to the portion of the brain responsible for maintaining a healthy circadian rhythm, a new field of lighting design has come in to being focused on controlling the spectrum of light that they are sensitive to. Currently, work in this field of lighting design, called circadian lighting design, is concentrated on artificial sources circadian stimulus. This is largely due to the advent of the widespread use LED technology, which has proven that it can be a significant source of circadian light. The use of daylight to provide circadian stimulus has been a given in this field of design, however, there has not been very much research into how the built environment affects our ability to effectively receive this stimulus from daylight. In this thesis, the groundwork will be established to start to create a set of guidelines to help architects and designer maximize the potential for daylight to provide circadian stimulus at the earliest stages of a project. This is accomplished through a series of case studies and lighting simulations that explore and test various architectural parameters that affect daylight-driven circadian lighting.

Download or read book Visual and Non Visual Effects of Light written by Agnieszka Wolska and published by CRC Press. This book was released on 2020-07-29 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction of artificial lighting extends the time of wakefulness after dark and enables work at night, thus disturbing the human circadian rhythm. The understanding of the physiological mechanisms of visual and non-visual systems may be important for the development and use of proper light infrastructure and light interventions for different workplace settings, especially for shift work conditions. Visual and Non-Visual Effects of Light: Working Environment and Well-Being presents the impact of lighting in the working environment on human health, well-being and visual performance. The physiological explanation of the visual and non-visual effects of light on humans which discusses the biological bases of image and non-image forming vision at the cellular level may be of particular interest to any professional in the field of medicine, physiology, and biology. It is one of the intentions of this book to put forward some recommendations and examples of lighting design which take into account both the visual and non-visual effects of light on humans. These may be of particular interest to any professional in the field of lighting, occupational safety and health, and interior design. "What effects on health can a light ‘overdose’ or light deficiency have? What is bad light? The authors of the monograph provide answers to these questions. Just as for a physicist, the dual nature of light comprises an electromagnetic wave and a photon, the duality of light for a physician comprises visual and non-visual effects." --------------------------------------------------------Prof Jacek Przybylski, Medical University of Warsaw "This is a unique publication in the field of lighting technology. The authors have skillfully combined both the technical and biomedical aspects involved, which is unprecedented in the literature available. As a result, an important study has been created for many professional groups, with a significant impact on the assessment of risks associated with LED sources." --------------------------------------------Prof Andrzej Zając, Military University of Technology, Warsaw

Download or read book LED Lighting written by Malvin Carl Teich and published by Google Books/Teich Consultants. This book was released on 2024-02-28 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: LED Lighting is a self-contained and introductory-level book featuring a blend of theory and applications that thoroughly covers this important interdisciplinary area. Building on the underlying fields of optics, photonics, and vision science, it comprises four parts. PART I is devoted to fundamentals. The behavior of light is described in terms of rays, waves, and photons. Each of these approaches is best suited to a particular set of applications. The properties of blackbody radiation, thermal light, and incandescent light are derived and explained. The essentials of semiconductor physics are set forth, including the operation of junctions and heterojunctions, quantum wells and quantum dots, and organic and perovskite semiconductors. PART II deals with the generation of light in semiconductors, and details the operation and properties of III-V semiconductor devices (MQWLEDs and μLEDs), quantum-dot devices (QLEDs & WOLEDs), organic semiconductor devices (OLEDs, SMOLEDs, PLEDs, & WOLEDs), and perovskite devices (PeLEDs, PPeLEDs, QPeLEDs, & PeWLEDs). PART III focuses on vision and the perception of color, as well as on colorimetry. It delineates radiometric and photometric quantities as well as efficacy and efficiency measures. It relays the significance of metrics often encountered in LED lighting, including the color rendering index (CRI), color temperature (CT), correlated color temperature (CCT), and chromaticity diagram. PART IV is devoted to LED lighting, focusing on its history and salutary features, and on how this modern form of illumination is deployed. It describes the principal components used in LED lighting, including white phosphor-conversion LEDs, chip-on-board (COB) devices, color-mixing LEDs, hybrid devices, LED filaments, retrofit LED lamps, LED luminaires, and OLED light panels. It concludes with a discussion of smart lighting and connected lighting. Each chapter contains highlighted equations, color-coded figures, practical examples, and reading lists.

Download or read book For Nature With Nature New Sustainable Design Scenarios written by Claudio Gambardella and published by Springer Nature. This book was released on with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental ergonomics written by Sasi Gangiah and published by AOSIS. This book was released on 2023-03-01 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the environmental ergonomics of restaurant kitchens and the challenges related hereto in a semitropical city from a chef’s perspective. It establishes the urgent need for commercial kitchens to be conducive to the well-being of kitchen workers as heat illness is unreported in this industry. This research is relevant from an occupational health and safety point of view. It evaluates the indoor environmental quality (IEQ) parameters such as heat, ventilation and humidity, noise and lighting in kitchens, cognisant that with different cuisines, the kitchen loads are different. The goals of occupational safety are health intervention for worker comfort to enhanced work performance. The book generates new knowledge regarding the factors affecting the body mass index of kitchen workers, prediction of heat and humidity near cooking stoves, discomfort near ovens, lighting in preparation areas and factors affecting reaction to stove noise. The book implements an exploratory design with multiple case studies.

Download or read book Visual and Non Visual Effects of Light written by Agnieszka Wolska and published by CRC Press. This book was released on 2020-07-29 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction of artificial lighting extends the time of wakefulness after dark and enables work at night, thus disturbing the human circadian rhythm. The understanding of the physiological mechanisms of visual and non-visual systems may be important for the development and use of proper light infrastructure and light interventions for different workplace settings, especially for shift work conditions. Visual and Non-Visual Effects of Light: Working Environment and Well-Being presents the impact of lighting in the working environment on human health, well-being and visual performance. The physiological explanation of the visual and non-visual effects of light on humans which discusses the biological bases of image and non-image forming vision at the cellular level may be of particular interest to any professional in the field of medicine, physiology, and biology. It is one of the intentions of this book to put forward some recommendations and examples of lighting design which take into account both the visual and non-visual effects of light on humans. These may be of particular interest to any professional in the field of lighting, occupational safety and health, and interior design. "What effects on health can a light ‘overdose’ or light deficiency have? What is bad light? The authors of the monograph provide answers to these questions. Just as for a physicist, the dual nature of light comprises an electromagnetic wave and a photon, the duality of light for a physician comprises visual and non-visual effects." --------------------------------------------------------Prof Jacek Przybylski, Medical University of Warsaw "This is a unique publication in the field of lighting technology. The authors have skillfully combined both the technical and biomedical aspects involved, which is unprecedented in the literature available. As a result, an important study has been created for many professional groups, with a significant impact on the assessment of risks associated with LED sources." --------------------------------------------Prof Andrzej Zając, Military University of Technology, Warsaw

Download or read book Phenomenon of Light written by Girish Bhardwaj and published by Notion Press. This book was released on 2021-09-17 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: We all must be aware of the physiology of human beings and plants with respect to the impacts of artificial and natural light. As we are spending maximum of our times staying in indoors, thus it is an essential way of approach, to succeed in our mission of wellbeing and healthy living through the time cue- LIGHT. “GIVE WAY TO THE NATURAL LIGHT”: Deciding on a lighting scheme does not mean deciding only for artificial lighting. Natural lighting is a boon. Even if it is required, make changes according to how the natural sunlight lights up your room. There are several other techniques to aim the incident rays of natural light to a different plane by reflecting those rays. This phrase “close to the sunlight” can be used as a comparisons for the visual acuity along with some parameters like heat, infrared, ultraviolet waves, and intensity of the spectral power distribution. The question is how, what and why? “LIGHT IS THE GOVERNOR OF THE UNIVERSE, AND OUR BODY IS A TYPE OF LITTLE UNIVERSE BY ITSELF.”

Download or read book Human centric Lighting written by Carina Felix and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humans now spend over 90% of their time indoors (EPA, 1989). This means that daily light exposure is at an all time low. There are serious health implications from the shift of evolutionary alignment with the rhythms of natural daylight to an interior environment that may have no connection to outdoor conditions. Circadian light is light that has an intended biological impact on the human circadian system. There is enough evidence that demonstrates the benefits of higher illuminance levels during key times of the day. Yet much of contemporary discourse has been focused on circadian light metrics without data on how meeting circadian light thresholds may affect occupant satisfaction and visual comfort. There is a gap between the scientific evidence and application strategies for designers and practitioners. This thesis examines the relationship between different circadian lighting design guidelines, the assessment organizations they come from, and the research they are based on. A significant inquiry into environmental assessment organizations is made that examines lighting related requirements and credits, as well as post occupancy evaluations of buildings and spaces. A simulation is performed to demonstrate the minimal decrease in energy use consumption from reduced illuminance levels. This along with occupant satisfaction data confirm that current interior lighting strategies do not provide overwhelming occupant satisfaction or significant energy reductions. This thesis makes the argument that circadian light should take on a larger role in the specification of luminaries and lighting design. A case is made for making knowledge of circadian lighting more accessible to designers and practitioners

Download or read book The Sustainable City XII written by C.A. Brebbia and published by WIT Press. This book was released on 2017-12-20 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grouping a selection of papers from the 12th International Conference on Urban Regeneration and Sustainability, this book refers to all aspects of urban environment and provides solutions that lead towards sustainability. The series maintains its strong reputation and a substantial number of contributions have been made from a diverse range of transnational delegates, resulting in a variety of topics and experiences. Urban areas face a number of challenges related to reducing pollution, improving main transportation and infrastructure systems and these challenges can contribute to the development of social and economic imbalances and require the development of new solutions. The challenge is to manage human activities, pursuing welfare and prosperity in the urban environment, whilst considering the relationships between the parts and their connections with the living world. The dynamics of its networks (flows of energy matter, people, goods, information and other resources) are fundamental for an understanding of the evolving nature of today’s cities. Large cities represent a productive ground for architects, engineers, city planners, social and political scientists able to conceive new ideas and time them according to technological advances and human requirements. The multidisciplinary components of urban planning, the challenges presented by the increasing size of cities, the amount of resources required and the complexity of modern society are all addressed. The published papers cover the following fields: Urban strategies; Planning, development and management; The community and the city; Infrastructure and society; Eco-town planning; Spatial conflicts in the city; Urban transportation and planning; Conservation and regeneration; Architectural issues; Sustainable energy and the city; Environmental management; Flood risk; Waste management; Urban air pollution; Health issues; Water resources; Landscape planning and design; Intelligent environment; Planning for risk and natural hazards; Waterfront development; Case studies.

Download or read book Designing with Light written by Jason Livingston and published by John Wiley & Sons. This book was released on 2021-12-21 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition of the popular introduction to architectural lighting design, covering all stages of the lighting design process Designing with Light: The Art, Science, and Practice of Architectural Lighting Design, Second Edition, provides students and professionals alike with comprehensive understanding of the use of lighting to define and enhance a space. This accessible, highly practical textbook covers topics such as the art and science of color, color rendering and appearance, lighting control systems, building codes and standards, and sustainability and energy conservation. Throughout the text, accomplished lighting designer and instructor Jason Livingston offers expert insights on the use of color, the interaction between light and materials, the relation between light, vision, and psychology, and more. Fully revised and updated throughout, the second edition features new chapters on design thinking, common lighting techniques, and lighting economics. Expanded sections on aesthetics, controlling LEDs, light, and health, designing with light, and color mixing luminaires are supported by new case studies, examples, and exercises. Featuring hundreds of high-quality color images and illustrations, Designing with Light: Provides systematic guidance on all aspects of the lighting design process Thoroughly covers color and light, including color perception, color rendering, and designing with colored light Explains the theory behind the practice of architectural lighting design Contains information on cost estimating, life cycle analysis, voluntary energy programs, and professional lighting design credentials Includes an instructor resource site with PowerPoint presentations, test questions, and suggested assignments for each chapter, and also a student site with flashcards, self-evaluation tests, and helpful calculators. Designing with Light: The Art, Science, and Practice of Architectural Lighting Design, Second Edition is perfect for architecture, interior design, and electrical engineering programs that include courses on lighting design, as well as professionals looking for a thorough and up-to-date desk reference.

Download or read book Intrinsic Clocks written by Timo Partonen and published by Frontiers Media SA. This book was released on 2018-03-19 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Intrinsic Clocks" presents an array of current research activities on intrinsic clocks and their contributions to biology and physiology. It elucidates the current models for the intrinsic clocks, their molecular components and key mechanisms as well as the key brain regions and animal models for their behavioral analysis. It provides a timely view on how these clocks guide behavior, and how their disruption may cause depressive-like behavior and impairment in cognitive functions. Thereby, any specific method by which the mood-related functions of the intrinsic clocks might be influenced bears therapeutic potential and has clinical interest. The importance of some of these mechanisms was highlighted by the 2017 award of the Nobel Prize in Physiology or Medicine to Jeffrey C. Hall, Michael Rosbash, and Michael W. Young for their discoveries of the genetic control of the daily biological rhythm. The key to the explanation was the discovery of transcription-translation feedback loops of the so-called “clock genes.”

Download or read book The Future of Heritage Science and Technologies ICT and Digital Heritage written by Rocco Furferi and published by Springer Nature. This book was released on 2022-10-29 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume constitutes the refereed proceedings of the Third International Conference on The Future of Heritage Science and Technologies, Florence Heri-Tech 2022, held in Florence, Italy, in May 2022. The 32 papers presented in this volume were thoroughly reviewed and selected from 101 submissions. They are organized in the topical sections on ​3D reconstruction of tangible cultural heritage and monitoring devices; IA and AR/VR based methods and applications for CH; methods and systems for enhancing heritage fruition and storytelling; virtual museums and virtual tours.

Download or read book Effective Daylighting with High Performance Facades written by Kyle Konis and published by Springer. This book was released on 2017-05-09 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explores advanced building-facade daylighting design practices based on diverse energy and human-factor performance metrics. It also defines effective daylighting by rethinking the simplified approach to glazing and facade systems to incorporate the local climate and the needs of building occupants as critical drivers of building performance, design solutions and technological innovation. It discusses state-of-the-art approaches in the context of simulation-based design workflows, innovative technologies and real project case studies, all targeting low and net-zero energy solutions that enhance occupant comfort. Readers benefit from a comprehensive approach that improves the feedback loop between design intent and performance in use. The book is intended for architects, lighting designers, facade engineers, manufacturers and building owners/operators, as well as advanced students.

Download or read book L e d written by Bob Johnstone and published by Createspace Independent Publishing Platform. This book was released on 2017-05-19 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: What kind of people does it take to change the light bulb? That is the question Bob Johnstone addresses in this follow-up to Brilliant!, his critically acclaimed book on the origins of the LED revolution. The answer is passionate individuals determined to make the world a better - and better-lit - place. The book tells the story of what has been called "one of the fastest technology shifts in human history." It is a shift that affects us all. Lighting accounts for up to twenty percent of the electricity we consume. LEDs use much less electricity than incandescent light bulbs, leading to huge reductions in our energy consumption, and helping to slow down climate change. But the LED revolution also encompasses light for better health and year-round crops, as well new, previously undreamed-of applications.