Understanding Led Illumination

This book provides an in-depth introduction to the fundamentals and practical aspects of LED lamp design.

Author: M Nisa Khan

Publisher: CRC Press

ISBN: 9780367867102

Category:

Page: 272

View: 379

Understanding LED Illumination elucidates the science of lighting for light emitting diodes. It presents concepts, theory, simulations, and new design techniques that shine the spotlight on illumination, energy efficiency, and reducing electrical power consumption. The text provides an introduction to the fundamentals of LED lamp design, and highlights the principles of large-space and 3D object illumination for developing competitive LED lamps. The first part of the book discusses lamp output metrics and characterization methods, while the second part of the book explores certain retail and prototype lamp comparisons with theory, simulations and experiments It details the light propagation and distribution characteristics of LED light sources for general illumination applications, and presents design and simulation requirements for LED lamps suited for real-world applications. It also addresses light generation, efficiency, theoretical limits, efficiency limiting factors, and LED lamp design elements. Emphasizes the lighting aspects for LED lamps: quality and improvement Describes the basics of junction diode and the intricacies of compound semiconductor optoelectronic properties including the thermal, electrical, optical, and mechanical aspects Explains the challenges of LED lighting in scientific and mathematical terms Includes case studies from Osram Optosemiconductors, Sylvania, and Phillips, GE, and others The book characterizes several LED replacement lamps for household and commercial lighting and discusses a novel design for improving tubular LED replacements. It takes the mysteries out of solid-state lighting for lighting designers, and helps LED scientists and engineers effectively design their products to provide high-quality illumination.

Understanding LED Illumination

understand and appreciate lighting fundamentals and illumination criteria. In the lighting industry, while lighting scientists and designers understand and appreciate illumination better than traditional LED engineers and scientists, ...

Author: M. Nisa Khan

Publisher: CRC Press

ISBN: 146650773X

Category: Science

Page: 272

View: 120

Understanding LED Illumination elucidates the science of lighting for light emitting diodes. It presents concepts, theory, simulations, and new design techniques that shine the spotlight on illumination, energy efficiency, and reducing electrical power consumption. The text provides an introduction to the fundamentals of LED lamp design, and highli

Understanding Light Microscopy

'Light-emitting diode flashlights as effective and inexpensive light sources for fluorescence microscopy'. Journal of Microscopy 236/1: 1–4. Sartory, C. (2008). 'LED lighting for microscopes'. Quekett Journal of Microscopy 40/8: ...

Author: Jeremy Sanderson

Publisher: John Wiley & Sons

ISBN: 0470973757

Category: Science

Page: 848

View: 247

Introduces readers to the enlightening world of the modern light microscope There have been rapid advances in science and technology over the last decade, and the light microscope, together with the information that it gives about the image, has changed too. Yet the fundamental principles of setting up and using a microscope rests upon unchanging physical principles that have been understood for years. This informative, practical, full-colour guide fills the gap between specialised edited texts on detailed research topics, and introductory books, which concentrate on an optical approach to the light microscope. It also provides comprehensive coverage of confocal microscopy, which has revolutionised light microscopy over the last few decades. Written to help the reader understand, set up, and use the often very expensive and complex modern research light microscope properly, Understanding Light Microscopy keeps mathematical formulae to a minimum—containing and explaining them within boxes in the text. Chapters provide in-depth coverage of basic microscope optics and design; ergonomics; illumination; diffraction and image formation; reflected-light, polarised-light, and fluorescence microscopy; deconvolution; TIRF microscopy; FRAP & FRET; super-resolution techniques; biological and materials specimen preparation; and more. Gives a didactic introduction to the light microscope Encourages readers to use advanced fluorescence and confocal microscopes within a research institute or core microscopy facility Features full-colour illustrations and workable practical protocols Understanding Light Microscopy is intended for any scientist who wishes to understand and use a modern light microscope. It is also ideal as supporting material for a formal taught course, or for individual students to learn the key aspects of light microscopy through their own study.

Fundamentals of Solid State Lighting

In a nutshell, the book traces the advances in LEDs, OLEDs, and their applications, and presents an up-to-date and analytical perspective of the scenario for audiences of different backgrounds and interests.

Author: Vinod Kumar Khanna

Publisher: CRC Press

ISBN: 1466561092

Category: Technology & Engineering

Page: 604

View: 836

Compared to traditional electrical filaments, arc lamps, and fluorescent lamps, solid-state lighting offers higher efficiency, reliability, and environmentally friendly technology. LED / solid-state lighting is poised to take over conventional lighting due to cost savings—there is pretty much no debate about this. In response to the recent activity in this field, Fundamentals of Solid-State Lighting: LEDs, OLEDs, and Their Applications in Illumination and Displays covers a range of solid-state devices, technologies, and materials used for lighting and displays. It also examines auxiliary but critical requirements of efficient applications, such as modeling, thermal management, reliability, and smart lighting. The book discusses performance metrics of LEDs such as efficiency, efficacy, current–voltage characteristics, optical parameters like spectral distribution, color temperature, and beam angle before moving on to luminescence theory, injection luminescence, radiative and non-radiative recombination mechanisms, recombination rates, carrier lifetimes, and related topics. This lays down the groundwork for understanding LED operation. The book then discusses energy gaps, light emission, semiconductor material, special equipment, and laboratory facilities. It also covers production and applications of high-brightness LEDs (HBLEDs) and organic LEDs (OLEDs). LEDs represent the landmark development in lighting since the invention of electric lighting, allowing us to create unique, low-energy lighting solutions, not to talk about their minor maintenance expenses. The rapid strides of LED lighting technology over the last few years have changed the dynamics of the global lighting market, and LEDs are expected to be the mainstream light source in the near future. In a nutshell, the book traces the advances in LEDs, OLEDs, and their applications, and presents an up-to-date and analytical perspective of the scenario for audiences of different backgrounds and interests.

LED Lighting for Urban Agriculture

J Gen Physiol 15:391–420 Fujiwara K (2014) Application of LEDs for plant cultivation and LED light irradiation techniques. In: Takatsuji M, Kozai T (eds) ... Sci Hortic 198:227–232 Khan MN (2013) Understanding LED illumination.

Author: Toyoki Kozai

Publisher: Springer

ISBN: 9811018480

Category: Technology & Engineering

Page: 454

View: 640

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.

LED Lighting

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

Publisher: "O'Reilly Media, Inc."

ISBN: 1449334725

Category: House & Home

Page: 70

View: 160

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

Understanding Automotive Electronics

The MOST transceiver incorporates an LED for transmitting light pulses along the optical fiber. The operation of an LED is explained in Chapter 8. The wavelength of the light is in the red portion of the visible spectrum at 650 nm.

Author: William Ribbens

Publisher: Butterworth-Heinemann

ISBN: 012810435X

Category: Technology & Engineering

Page: 710

View: 927

Understanding Automotive Electronics: An Engineering Perspective, Eighth Edition, is written with an engineering perspective that includes mathematical models, providing a qualitative explanation of each subject that requires no mathematical background. Thoroughly updated throughout, this new edition moves away from introductory mechanic-level electronics to cover hot topics such as automotive camera systems and typical electronic camera systems, hybrid control, AUTOSAR (AUTomotive Open System ARchitecture) and vehicle networks. Comprehensive coverage of automotive electronics and control, including the latest technology in telematics, active safety, entertainment, and communications are also included. This book is the first port of call for control engineers, system engineers, and electronic engineers in automotive who need a thorough grounding in automotive electronics and control. From simple automotive electronic circuits, to the latest developments in telematics, active safety, entertainment, and communications, the book is also an ideal resource for more senior automotive engineers without a background in electronics or control who to work in the area or supervise specialists. Presents the full range of electrical/electronic theory that is applicable to modern automotive technology at a level progressing from basic theory and science, to detailed application to all major automotive systems and components Features circuit diagrams that are representative of actual circuits used to perform relevant functions in automotive electronic systems Discusses how the AUTOSAR middleware platform integrates with the low level electronics of automotive systems Provides a thorough understanding of automotive electronic technology at a level that is helpful to students, technicians, and industry engineers

LED Lighting Explained

Author: Jonathan Weinert

Publisher:

ISBN: 9780615360614

Category:

Page: 123

View: 579


Solid State Lighting Reliability

Hechfellner R, Landau S (2009) Understanding LED performance, Led Lighting Magazine, pp 45–53 39. US Department of Energy (DOE) (2009) LED applications. www.ssl.energy.gov 40. Alliance for Solid-State Illumination Systems and ...

Author: W.D. van Driel

Publisher: Springer Science & Business Media

ISBN: 1461430674

Category: Technology & Engineering

Page: 618

View: 734

Solid State Lighting Reliability: Components to Systems begins with an explanation of the major benefits of solid state lighting (SSL) when compared to conventional lighting systems including but not limited to long useful lifetimes of 50,000 (or more) hours and high efficacy. When designing effective devices that take advantage of SSL capabilities the reliability of internal components (optics, drive electronics, controls, thermal design) take on critical importance. As such a detailed discussion of reliability from performance at the device level to sub components is included as well as the integrated systems of SSL modules, lamps and luminaires including various failure modes, reliability testing and reliability performance. A follow-up, Solid State Lighting Reliability Part 2, was published in 2017.

Understanding Lasers

Light-Emitting. Diodes. (LEDs). A light-emitting diode is a semiconductor diode that is forward-biased so carriers recombining at a junction spontaneously emit light. That light is spontaneous emission, incoherent light like that ...

Author: Jeff Hecht

Publisher: John Wiley & Sons

ISBN: 1118210042

Category: Technology & Engineering

Page: 496

View: 525

Updated to reflect advancements since the publication of the previous edition, Understanding Lasers: An Entry-Level Guide, 3rd Edition is an introduction to lasers and associated equipment. You need only a minimal background in algebra to understand the nontechnical language in this book, which is a practical, easy-to-follow guide for beginners. By studying the conceptual drawings, tables, and multiple-choice quizzes with answers provided at the back of the book you can understand applications of semiconductor lasers, solid-state lasers, and gas lasers for information processing, medicine, communications, industry, and military systems.