Download or read book LED Lighting written by Sal Cangeloso and published by "O'Reilly Media, Inc.". This book was released on 2012-07-10 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: We’re on the brink of a lighting revolution with light-emitting diodes—the tiny LEDs you’ve seen in electronic devices for years. With this practical guide, you’ll go behind the scenes to see how and why manufacturers are now designing LED devices to light everything from homes and offices to streets and warehouses. Author Sal Cangeloso shows you the working parts of a “simple” LED bulb and explains the challenges electronics companies face as they push LED lighting into the mainstream. You’ll learn how you can use LEDs now, and why solid state lighting will bring dramatic changes in the near future. Explore the drivers, phosphors, and integrated circuits in a typical LED bulb Understand the challenges in producing LED bulbs with acceptable brightness, color temperature, and power consumption Learn about non-bulb LED applications, including lamps, street lights, and signage Discover the market forces driving—and impeding—the adoption of LED lighting Compare LEDs to compact fluorescent lamps (CFLs) and electron-stimulated luminescence (ESL) bulbs Gaze into the future of intelligent lighting, including networked lighting systems

Download or read book LED Lighting written by Kirk Tuck and published by Amherst Media, Inc. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accessible for professionals and hobbyists alike, this guide helps photographers navigate the transition from traditional flash and hot lights to light-emitting diode (LED) lights, the hottest new trend in lighting technology. It demystifies the process of choosing the right LED light for projects, presents commonsense methods for using LEDs and offers suggestions for achieving the perfect lighting colour and balance. Includes examples of how to use LEDs in still life images, portraits and even moving pictures. The essential guide to the biggest new trend in photography.

Download or read book LED Lighting written by T. Q. Khan and published by John Wiley & Sons. This book was released on 2015-02-09 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: Promoting the design, application and evaluation of visually and electrically effective LED light sources and luminaires for general indoor lighting as well as outdoor and vehicle lighting, this book combines the knowledge of LED lighting technology with human perceptual aspects for lighting scientists and engineers. After an introduction to the human visual system and current radiometry, photometry and color science, the basics of LED chip and phosphor technology are described followed by specific issues of LED radiometry and the optical, thermal and electric modeling of LEDs. This is supplemented by the relevant practical issues of pulsed LEDs, remote phosphor LEDs and the aging of LED light sources. Relevant human visual aspects closely related to LED technology are described in detail for the photopic and the mesopic range of vision, including color rendering, binning, whiteness, Circadian issues, as well as flicker perception, brightness, visual performance, conspicuity and disability glare. The topic of LED luminaires is discussed in a separate chapter, including retrofit LED lamps, LED-based road and street luminaires and LED luminaires for museum and school lighting. Specific sections are devoted to the modularity of LED luminaires, their aging and the planning and evaluation methods of new LED installations. The whole is rounded off by a summary and a look towards future developments.

Download or read book LED Lighting Explained written by Jonathan Weinert and published by . This book was released on 2010-04-01 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Beautiful Light written by Randall Whitehead and published by Routledge. This book was released on 2021-08-12 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beautiful Light by internationally acclaimed lighting designer Randall Whitehead and lighting industry expert and educator Clifton Stanley Lemon is a combination of idea book, design resource, and product guide. It explores the transition in residential lighting from incandescent light sources to LEDs, and how to apply LED lighting with great success. It begins with the fundamental characteristics of light, including color temperature, color rendering, and spectral power distribution, and how LEDs differ from older light sources. Combining innovative graphics with the enduring design principles of good lighting, the book explains how to design with light layers, light people, and balance daylight and electric light. Every room of the house, as well as exterior and garden spaces, is addressed in 33 case studies of residential lighting with LEDs, with a wide variety of lighting projects in different styles. Showcasing over 200 color photographs of dramatic interiors beautifully lit with LEDs, and clear, concise descriptions of design strategies and product specifications, Beautiful Light helps both professionals and non-professionals successfully navigate the new era of LEDs in residential lighting.

Download or read book LED Lighting for Urban Agriculture written by Toyoki Kozai and published by Springer. This book was released on 2016-11-08 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on light-emitting diode (LED) lighting, mainly for the commercial production of horticultural crops in plant factories and greenhouses with controlled environments, giving special attention to: 1) plant growth and development as affected by the light environment; and 2) business and technological opportunities and challenges with regard to LEDs. The book contains more than 30 chapters grouped into seven parts: 1) overview of controlled-environment agriculture and its significance; 2) the effects of ambient light on plant growth and development; 3) optical and physiological characteristics of plant leaves and canopies; 4) greenhouse crop production with supplemental LED lighting; 5) effects of light quality on plant physiology and morphology; 6) current status of commercial plant factories under LED lighting; and 7) basics of LEDs and LED lighting for plant cultivation. LED lighting for urban agriculture in the forthcoming decades will not be just an advanced form of current urban agriculture. It will be largely based on two fields: One is a new paradigm and rapidly advancing concepts, global technologies for LEDs, information and communication technology, renewable energy, and related expertise and their methodologies; the other is basic science and technology that should not change for the next several decades. Consideration should be given now to future urban agriculture based on those two fields. The tremendous potentials of LED lighting for urban agriculture are stimulating many people in various fields including researchers, businesspeople, policy makers, educators, students, community developers, architects, designers, and entrepreneurs. Readers of this book will understand the principle, concept, design, operation, social roles, pros and cons, costs and benefits of LED lighting for urban agriculture, and its possibilities and challenges for solving local as well as global agricultural, environmental, and social issues.

Download or read book LED Packaging for Lighting Applications written by Shen Liu and published by John Wiley & Sons. This book was released on 2011-07-05 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first light-emitting diode (LED) was invented by Holonyak and Bevacqua in 1962, LEDs have made remarkable progress in the past few decades with the rapid development of epitaxy growth, chip design and manufacture, packaging structure, processes, and packaging materials. LEDs have superior characteristics such as high efficiency, small size, long life, low power consumption, and high reliability. The market for white LED is growing rapidly in various applications. It has been widely accepted that white LEDs will be the fourth illumination source to substitute the incandescent, fluorescent, and high-pressure sodium lamps. With the development of LED chip and packaging technologies, the efficiency of high power white LED will broaden the application markets of LEDs while changing the lighting concepts of our lives. In LED Packaging for Lighting Applications, Professors Liu and Luo cover the full spectrum of design, manufacturing, and testing. Many concepts are proposed for the first time, and readers will benefit from the concurrent engineering and co-design approaches to advanced engineering design of LED products. One of the only books to cover LEDs from package design to manufacturing to testing Focuses on the design of LED packaging and its applications such as road lights Includes design methods and experiences necessary for LED engineers, especially optical and thermal design Introduces novel LED packaging structures and manufacturing processes, such as ASLP Covers reliability considerations, the most challenging problem for the LED industry Provides measurement and testing standards, which are critical for LED development, for both LED and LED fixtures Codes and demonstrations available from the book’s Companion Website This book is ideal for practicing engineers working in design or packaging at LED companies and graduate students preparing for work in industry. This book also provides a helpful introduction for advanced undergraduates, graduates, researchers, lighting designers, and product managers interested in the fundamentals of LED design and production. Color version of selected figures can be found at www.wiley.com/go/liu/led

Download or read book LED Lighting written by Sal Cangeloso and published by Maker Media, Inc.. This book was released on 2012-07-10 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: We’re on the brink of a lighting revolution with light-emitting diodes—the tiny LEDs you’ve seen in electronic devices for years. With this practical guide, you’ll go behind the scenes to see how and why manufacturers are now designing LED devices to light everything from homes and offices to streets and warehouses. Author Sal Cangeloso shows you the working parts of a “simple” LED bulb and explains the challenges electronics companies face as they push LED lighting into the mainstream. You’ll learn how you can use LEDs now, and why solid state lighting will bring dramatic changes in the near future. Explore the drivers, phosphors, and integrated circuits in a typical LED bulb Understand the challenges in producing LED bulbs with acceptable brightness, color temperature, and power consumption Learn about non-bulb LED applications, including lamps, street lights, and signage Discover the market forces driving—and impeding—the adoption of LED lighting Compare LEDs to compact fluorescent lamps (CFLs) and electron-stimulated luminescence (ESL) bulbs Gaze into the future of intelligent lighting, including networked lighting systems

Download or read book Principles of LED Light Communications written by Svilen Dimitrov and published by Cambridge University Press. This book was released on 2015-03-12 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn how to build efficient, simple, high performance indoor optical wireless communication systems based on visible and infrared light.

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 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.

Download or read book LED for Lighting Applications written by Patrick Mottier and published by John Wiley & Sons. This book was released on 2010-01-05 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light Emitting Diodes (LEDs) are no longer confined to use in commercial signage and have now moved firmly, and with unquestioned advantages, into the field of commercial and domestic lighting. This development was prompted in the late 1980s by the invention of the blue LED, a wavelength that had previously been missing from the available LED spectrum and which opened the way to providing white light. Since that point, LED performance (including energy efficiency) has improved dramatically, and now compares with the performance of fluorescent lights - and there remain further performance improvements yet to be delivered. The book begins with the principles of LED lighting, then focuses on issues and challenges. Chapters are devoted to key steps in LED manufacturing: substrate, epitaxy, process and packaging. Photoelectric characterization of LEDs, Lighting with LEDs and the imposition of a certain level of color quality, are the subject of later chapters, and finally there is a detailed discussion of the emergence of OLEDs, or organic LEDs, which have specific capabilities of immediate interest and importance in this field.

Download or read book Crop Physiology under LED Lighting written by Leo Marcelis and published by Frontiers Media SA. This book was released on 2022-02-03 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book LED Lighting for your Home Business written by Simon Marlow and published by SandSPublishing. This book was released on 2014-03-05 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: How to find quickly and easily the LED light to fit your home and business. Read this book before you buy so you are armed with the information you need to make the right choices. Don't wait the savings and quality of light that is available will amaze you. The sheer savings and the wide selection of light quality are revolutionary. LED lighting is here now, take advantage of the savings and greatly improve the quality of light in your home or business. Save and be Green!

Download or read book Code of Practice for the Application of LED Lighting Systems written by The Institution of Engineering and Technology and published by Iet Codes and Guidance. This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: LED lighting is a fast-developing technology that is becoming more popular as people begin to realise the advantages it provides, such as energy efficiency, controllability and longevity. However, poor quality installation of LED lighting systems could negate these advantages and result in inadequate lighting, failure to meet lifetime performance expectations, potential public health and safety issues or even interference with other technology due to poor systems integration. This Code of Practice has been developed to provide confidence to users as a minimum standard for LED lighting systems installation, as well as to serve as a useful reference on the application of LED lighting systems.

Download or read book Led Lighting and Drivers written by J Marcos Alonso and published by . This book was released on 2019-11-27 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is organized in four chapters. Chapter 1 deals with an introduction to light and lighting. As a power electronics engineer working on LEDs and lighting systems in general, I think it is important for the reader to have the basic knowledge about lighting systems, which I have tried to summarize in this chapter. Because of the extremely interesting possibilities of LEDs to generate different light colors, Chapter 1 includes a section related to the understanding of color quantification and measurement in different color spaces. The Chapter also includes several examples on light and color calculations.In order to develop and implement a suitable LED driver, it is necessary to have a good knowledge about LED behavior and characteristics. Thus, Chapter 2 aims at providing the reader with the most important issues related to LED operation and modeling from a practical point of view. The most common LED structures and materials are presented in this chapter together with the most relevant electrical, thermal and optical characteristics, making special emphasis on those characteristics provided by LED manufacturers in their datasheets. Special sections are dedicated to light dimming and color mixing. The chapter is closed with a brief review of organic LED (OLED) technology, which is another promising LED technology nowadays.Chapter 3 is devoted to DC LED drivers, which are those LED drivers intended to supply the LED from a DC voltage source, like a battery or a DC bus. This chapter covers the three most relevant technologies that are being used to implement DC LED drivers at the present time, which are those based on linear regulators, switched capacitor regulators and switching regulators. The most relevant solutions to implement DC LED drivers are reviewed from a practical point of view. The chapter also reviews the most common control methods applied to DC LED drivers. Examples are included by means of computer simulations based on LTspice, which is a free but powerful SPICE-based simulation software developed by former Linear Technologies Company, now part of Analog Devices. The chapter ends with a section devoted to LED configurations, namely, series, parallel and matrix configurations, which are employed to implement high-power LED lamps.Finally, Chapter 4 is dedicated to off-line LED drivers. This is the denomination given to LED drivers that are intended to operate from an AC grid voltage. These are the most complicated LED drivers since they usually require the implementation of a front-end power-factor-correction (PFC) stage followed by a downstream DC-DC converter to adapt voltage levels and provide regulated current to the LED lamp. The most important standards and regulations related to this type of LED drivers are presented at the beginning of the chapter. Then, single-stage LED drivers are studied, which can be used as a stand-alone off-line LED driver or as a first stage in a two-stage off-line LED driver. The highly-relevant problem of requiring a large storage capacitance in single-stage off-line LED drivers to cope with the double-line-frequency pulsating power originated from line voltage rectification is addressed in this chapter. Finally, integrated two-stage off-line LED drivers are presented and studied as a solution to reduce the storage capacitance of off-line LED drivers, aiming at using high-reliability film-capacitors instead of less reliable electrolytic capacitors. LTspice simulation examples are also provided in this chapter to allow the reader to have a better idea about the design and operation of this type of LED drivers.

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 293 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.