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Patented LightWedge technology directs light only onto the page. Colorful Harry Potter graphics and seven interchangeable switch covers. Larger size that matches the LightWedge Original, the LUMOS is perfect for hardcover and larger "trade" paperback books. Page-sized, acrylic lens lays flat on the page. 2 bright LEDs shine light magically in a dark room:.
Price: $24.94 [Notify me when price goes down.]

Light-emitting diodes are being widely used due to their efficient use of power. The applications for power LEDs include traffic lights, street lamps, automotive lighting, architectural lights, household light replacements, signage lighting (replacing neon strip lights and fluorescent tubes), and many more.

Powering (driving) these LED's is not always simple. Linear driving is inefficient and generates far too much heat. With a switching supply, the main issues are EMI and efficiency, and of course cost. The problem is to get a design that meets legal requirements and is efficient, while costing the least. This book covers the design trade-offs involved in LED driving applications, from low-power to UB-LEDs and beyond.

* Practical, "hands-on" approach to power supply design for LED drivers;
* Detailed examples of what works and why, throughout the design process;
* Commentary on how the calculated component value compares with the actual value used, including a description of why the choice was made..
Price: $48.41 [Notify me when price goes down.]

Revised and fully up-dated, the second edition of this graduate textbook offers a comprehensive explanation of the technology and physics of LEDs such as infrared, visible-spectrum, ultraviolet, and white LEDs made from III-V semiconductors Elementary properties such as electrical and optical characteristics are reviewed, followed by the analysis of advanced device structures. With nine additional chapters, the treatment of LEDs has been vastly expanded, including new material on device packaging, reflectors, UV LEDs, III-V nitride materials, solid-state sources for illumination applications, and junction temperature. Radiative and non-radiative recombination dynamics, methods for improving light extraction, high-efficiency and high-power device designs, white-light emitters with wavelength-converting phosphor materials, optical reflectors, and spontaneous recombination in resonant-cavity structures are discussed in detail. With exercises, solutions, and illustrative examples, this textbook will be of interest to scientists and engineers working on LEDs and graduate students in electrical engineering, applied physics, and materials science..
Price: $61.50 [Notify me when price goes down.]

A thorough reference that sheds light on the promising field of solid-state lighting
Solid-state lighting is a rapidly emerging field. Light Emitting Diodes are already used in traffic signals, signage/contour lighting, large area displays, and automotive applications. But its greatest future lies in the possibility of applying solid-state lamps to general lighting. Solid-state lighting promises to reduce energy consumption as much as fifty percent, cut down on carbon-dioxide emission, and even spur the development of a completely new lighting industry.
Giving this important emerging field the attention it deserves, Introduction to Solid-State Lighting comprehensively covers:
* The history of lighting
* The characterization of visible light
* Conventional light sources
* LED basics
* Extraction of light from high-brightness LEDs
* White LED
* Applications of solid-state lamps.
Price: $60.76 [Notify me when price goes down.]

New advances offer flexible, low-cost fabrication methods for light-emitting materials, particularly in display technologies. As researchers continue to develop novel applications for these materials, feasible solutions for large-scale manufacturing are increasingly important. Organic Light-Emitting Materials and Devices covers all aspects of organic light-emitting diodes (OLEDs), focusing on the unique characteristics of electroluminescent materials, device structures, and fabrication technologies.

Written by internationally recognized experts across several fields, this book first explains the multilayered structure and fundamental physics that account for OLED design. The book compiles information on the synthesis, properties, and device performance of nearly 1,000 organic small molecule- and polymer-based electroluminescent materials. It also investigates practical manufacturing techniques for OLED fabrication as well as methods used for microstructural characterization, performance measurement, and defect analysis. Later chapters discuss the patent status of the currently employed organic light-emitting materials, potential applications of OLEDs, and the challenges facing future developments from both academic and industrial perspectives.

Incorporating the latest research on hundreds of light-emitting organic materials, Organic Light-Emitting Materials and Devices reflects the current understanding of molecular design in the field and reveals the most stable and efficient electroluminescent materials as well as the vast potential for future applications..
Price: $107.96 [Notify me when price goes down.]

This book takes readers through a tour of the LRD evolution, commencing with a brief history of the effort to enable the device that generates light through modern organic LEDs. It reviews the fundamentals and principles of light prior to a detailed explanation of how LEDs generate different colors. After forming this basic foundation of knowledge, the book examines the key of LEDs in lighting and communications. It then discusses the latest opportunities and advancements in high brightness (HB) LED technology, solid state lighting, and handheld electronic applications..
Price: $68.20 [Notify me when price goes down.]

This digital document is an article from The Review of Policy Research, published by Thomson Gale on September 1, 2007. The length of the article is 793 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: LED standard traffic signals.(25 ideas)(light emitting diodes)
Author: Kyle Atwell
Publication:The Review of Policy Research (Magazine/Journal)
Date: September 1, 2007
Publisher: Thomson Gale
Volume: 24 Issue: 5 Page: 486(2)

Distributed by Thomson Gale.
Price: $9.95 [Notify me when price goes down.]

Shuji Nakamura's development of a blue semiconductor laser on the basis of GaN opens the way for a host of new applications of semiconductor lasers. The wavelengths can be tuned by controlling the composition. For the first time it is possible to produce lasers with various wavelengths, ranging from red through yellow and green to blue, in one substrate material. This fact, together with their high efficiency, makes GaN-based lasers very useful for a wide spectrum of applications. The second edition of this basic book on GaN-based devices has been updated and significantly extended. It includes a survey of worldwide research on GaN, as well as Nakamura's latest important developments. The reader finds a careful introduction to the physics and properties of GaN. The main part of the book deals with the production and characteristics of GaN LDs and LEDs. To complete the spectrum of applications, GaN power devices are also described..
Price: $89.77 [Notify me when price goes down.]