Lighting

Choosing the Right Circuit Protection for LEDs

by Bharat Shenoy, Littelfuse, Inc., Chicago, IL

Approximately 25 percent of global energy consumption goes to lighting applications, so making lighting more energy-efficient could have a dramatic impact on overall energy usage or make more power available for other uses. Legislation designed to discourage the use of incandescent lamps has been a significant factor in the growth in demand for LED lighting equipment. At the same time, both consumers and industrial users are increasingly interested in energy-efficient lighting options, further stimulating the demand for LED lighting.

Posted in: Articles, LEDs, Lighting, Powering & Controlling LEDs
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Solar Powered LEDs Offer Security to Mesa Residential Community

Howard Industrial Sales, Chandler, AZ

When residents of the Park Centre Casitas residential community in Mesa, Arizona, got together and hired a security company to survey the property and suggest ways to keep it safe, the security company suggested adding perimeter lighting.

Posted in: Application Briefs, LEDs, Lighting
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LEDs Reduce Energy Consumption for Monte Carlo Resort’s Street of Dreams

Light Efficient Design, Cary IL

Light Efficient Design, a division of TADD, LLC, recently completed an LED retrofit project in the busy “Street of Dreams” retail area of the Monte Carlo Casino and Resort. Monte Carlo, one of 10 MGM resorts on the Las Vegas Strip, replaced 96 500-watt halogen lamps with 50-watt LED lamps in a retail area covering 8,950 square feet. The dramatic decrease in watt usage has created tremendous energy savings.

Posted in: Application Briefs, LEDs, Lighting
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Quantum Dots Improve Colors on TV and Computer Screens

Sandwiching QDs between two polymer films for protection is the key to success.

3M Company, St. Paul, MN

High-tech specks called quantum dots could bring brighter, more vibrant color to mass market TVs, tablets, phones and other displays. A new technology called 3M quantum dot enhancement film (QDEF), unveiled at the 248th National Meeting & Exposition of the American Chemical Society (ACS), has the potential to efficiently make liquid crystal display (LCD) screens more richly colored. That’s because quantum dot, or “QD,” displays need less energy compared to other high-color options. QDs are superconducting crystals so small that 10,000 could fit across the width of a human hair.

Posted in: Briefs, Lighting, OLEDs
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Scientists Create Semiconductor Junction Only Three Atoms Thick

New technique could someday produce in-plane quantum wells and quantum wires, superlattices, and fully functioning transistors.

University of Washington, Seattle, Washington

Scientists at the University of Washington have developed what they believe is the thinnest-possible semiconductor, a new class of nanoscale materials made in sheets only three atoms thick. Two of these single-layer semiconductor materials can be connected in an atomically seamless fashion known as a heterojunction. A heterojunction is the interface that occurs between two layers or regions of dissimilar crystalline semiconductors, both of which have unequal band gaps. This result could be the basis for next-generation flexible and transparent computing, better light-emitting diodes (LEDs), and solar technologies.

Posted in: Briefs, Lighting
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Researchers Solve the Mystery of Efficiency Droop in LEDs

UC Santa Barbara

The ordinary light bulb is an innovation so extraordinary that a sudden brilliant idea is called “a light bulb moment.” Credit for inventing the first incandescent-style light bulb often goes to Thomas Edison, but even that wasn’t a light bulb moment. In fact, his patent for an improved electric light came after 75 years of hard work by several scientists and engineers, all scrambling to find the best way to run an electrical current through a filament and get it to glow.

Posted in: News, LEDs, Lighting
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Pyramid Scheme for Brighter Organic LEDs Could Produce Better Light Bulbs

University of Michigan

The most common kind of light bulb in the United States— the incandescent—is only about 5 percent efficient. The phosphorescent organic light-emitting diode, on the other hand, makes light out of 100 percent of the electricity that goes into it. They're good for smartphone screens and mood lighting, but they drop off in both efficiency and lifetime when they have to shine brightly. University of Michigan researchers have found an elegant way to get around this problem, however, by arranging the PHOLEDs into a pyramid.

Posted in: News, LEDs, Lighting
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LED Solar Simulator

Oriel Instruments (Bozeman, MT), a Newport Company, has introduced the LSH-7320 LED Class ABA Solar Simulator. Compared to conventional solar simulators with Xenon sources, the LED-based solar simulator provides fast turn-on, a much longer lifetime, and reduced waste heat for easy integration into glove boxes. The system is specifically designed to meet the requirements of the photovoltaic research market and provides a variable output from 0.1 to 1.1 suns over a 2 inch × 2 inch illumination area at a working distance of 12 inches (305 mm).

Posted in: Products, LEDs, Lighting
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Wireless Software Suite

CEL (Santa Clara, CA) has announced the field trial release of its new MeshWorks™ wireless software suite. This new platform unites several tools to help create and simplify a complete mesh network design as part of the Internet of Things (IoT).

Posted in: Products, Lighting
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Light Controller

EVT (Karlsruhe, Germany) presents a new light controller for difficult lighting situations. The Eye-MIO Light controller can be connected to sys tems with RS232, USB and Ethernet. EyeMIO Light is suitable for almost any lighting situation, from flash to auton omous control of sequence lighting (e.g. shape from shading). With the completely programmable EyeMIO Light controller, a multi-camera-control with flash triggered generation is also possible.

Posted in: Products, Lighting
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