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Lighting

Your destination for advances in Lighting. Design Engineers can access Technical Briefs, news in LEDs, OLEDs, Industrial Lighting, Power and Controlling LEDs. Discover new materials being introduced to improve lighting technologies.

Articles : Lighting Technology
Sizing Up Circuit Protection for LED Strings

As light-emitting diodes (LEDs) find their way into more outdoor applications, they are at higher risk for electrostatic discharge (ESD) and other electrical transients. High-brightness (HB) LEDs — those with sapphire or silicone carbide (SiC) substrates and in the future aluminum nitride (AlN) and...

Articles : Lighting
Taking the Heat: Silicone’s Unique Properties Help Create the Next Generation of LED Lighting

As global energy demand rises, the significant energy-saving potential of light-emitting diode (LED) lighting remains a top consideration for lighting manufacturers as well as designers, architects, and consultants looking to offer clients more...

Briefs : Lighting
Transparent Conducting Oxides and Undercoat Technologies for Economical OLED Lighting

Economics is a key factor for application of organic light-emitting diodes (OLEDs) in general lighting relative to OLED flat panel displays that can handle high-cost materials such as indium tin oxide (ITO) or indium zinc oxide (IZO) as the transparent...

Briefs : Lighting
Hydrogen Fuel Cell-Powered Mobile Lighting System

A new mobile lighting system features a fuel cell running on pure hydrogen, resulting in zero-emission electrical power. The fuel cell produces electricity for an advanced, power-saving light-emitting plasma (LEP) lighting system and additional auxiliary power up to 2.5 kW, which allows extra...

Briefs : Lighting
High-Performance LED Comprised of Organic and Quantum Dot-Based Layers

New research paves the way to manufacturing efficient, stable, and low-cost quantum dot-based light-emitting diodes (LEDs), which is important for the widespread commercial use of these LEDs in large-area, full-color flat-panel displays or as solid-state lighting sources to...

Application Briefs : Lighting
LED Street Lights Cut Energy Consumption and Eliminate Bulb Changes

Founded over 200 years ago along the Mississippi River in Missouri, the city of Cape Girardeau is now home to almost 38,000 residents. The Missouri Highway 74 corridor through the city's downtown is one of the busiest thoroughfares in the city, leading up to the Emerson Memorial...

Application Briefs : Lighting
Flexible LED Assembly for Automotive Signal Lighting

A build-out-of-the-box approach to turn, tail, and stop lighting applications on vehicles significantly reduces engineering and development costs. With recent improvements to Snap LED, an automotive LED assembly, the need for retesting and screening is removed, which can save users on...

Techs for License : Lighting
High Extraction Efficiency GaN LED

Photonic crystals have received an increasing amount of interest for use as light extractors in light-emitting diodes (LEDs), but their implementation on the surface of LEDs has thus far produced little improvement in extraction efficiency.

Techs for License : Lighting
Relaxed SiGe Films By Surfactant Mediation

Relaxed silicon-germanium (SiGe) has become an important material in the fabrication of high-quality films for various applications. Strain-relaxed SiGe buffers have been produced by at least three known methods. However, these techniques present several disadvantages, such as long growth times, thick...

Products : Lighting
LED Power Supplies

ERG Lighting (Endicott, NY) has introduced eDriver LED power supplies, available in a broad range of constant voltage and constant current drivers. The driver modules are 90% efficient and fully isolated, with universal input (120 V, 220 V, 277 V), power factor correction > 90%, and 0-10 V dimming options. eDrivers provide the...

Products : Lighting
Six-Channel LED Driver IC

The HV9957 from Supertex (Sunnyvale, CA) combines a switch-mode boost converter and six low-dropout, linear current regulators to deliver high efficiency and precise current control in an LED driver. The IC can drive up to six strings of LEDs at 30 mA each, which is well-suited for battery-powered LED backlighting...

Products : Lighting
Poke-In Wire SSL Connector

TE Connectivity (Harrisburg, PA) has extended its line of poke-in connectors to include the new micro poke-in wire SSL connector — a low-profile printed circuit board connector specifically designed for LED channel lettering lighting strips, general illumination LED fixtures, architectural cove and valence lighting,...

Products : Lighting
LED Control IC

The IRS2548D switched-mode power supply control IC from International Rectifier (El Segundo, CA) is for high-power LED illumination including LED street lighting, stadium lighting, and theatrical lighting. The device achieves PWM dimming down to less than two percent light output, and offers protection features that include...

Products : Lighting
Low-Profile LED Lighting Connectors

Two new series of connectors for LED lighting systems from AVX Corporation (Greenville, SC) maintain the same luminosity and light intensity as florescent strip lights. The standard length of fluorescent lights is 1.2 m and it is impossible to reflow-mount LEDs on such a long printed circuit board placed in...

Products : Lighting
Multi-Functional Connector System

Hirose (Simi Valley, CA) has developed a 2-mm pitch, multi-functional connector system that provides wire-to-board, board-to-board joint and short-circuit sockets in a single connector design. The DF59 connector is ideal for the LED market and other applications that require a small connector, such as battery...

Products : Lighting
LED Drivers

XP Power (Sunnyvale, CA) has released the DLG series of constant voltage and constant current LED drivers for a range of outdoor lighting, security, and machine vision applications. The IP67-rated waterproof units are highly efficient, up to 90%, and generate less waste heat than competitor products - resulting in an extended...

Products : Energy
Constant-Current Regulators

ON Semiconductor (Phoenix, AZ) has expanded its portfolio of constant-current regulators (CCRs) to include the NSI50350A. The simple and robust device is designed to provide a thermally-efficient and cost-effective alternative to passive/discrete components or driver IC solutions for current regulation of LEDs.

News : Lighting
$10 Million in Funding to Support R&D to Improve SSL Manufacturing

The DOE has announced the availability of up to $10 million in funding for energy-saving lighting technologies. DOE is seeking applications for research and development projects to drive down the cost and improve the quality of solid-state lighting products through manufacturing...

News : Lighting
Inexpensive, Efficient 60-W LED Bulb

Lighting Science Group (Satellite Beach, FL) and Dixon Technologies India Pvt. Ltd (New Delhi, India) have announced that a high-performance, sub-$15 omnidirectional 60-watt equivalent A19 LED bulb will be available in India by the end of the year and will be sold worldwide early next year.

News : Energy
Innovative Heat-Regulating Building Material

Researchers at the University of Nottingham Ningbo, China (UNNC) have invented a material that can retain and release heat according to specific temperature requirements. The material could be used in both new and existing structures and offer considerable energy savings.

News : Lighting
Funding for Solid-State Lighting R&D

The Department of Energy has announced the availability of up to $12 million in funding for energy-saving lighting technologies. The DOE will invest in projects to accelerate research and development of solid-state lighting technologies like LEDs and OLEDs.

News : Energy
The August Issue of Lighting Technology Is Here

The new issue of Lighting Technology has more new feature articles, application stories, tech briefs, products, videos, and research news - all on the latest advances in LEDs and solid-state lighting.

Briefs : Energy
GaN-Ready Aluminum Nitride Substrates

The objective of this project was to develop and then demonstrate the efficacy of a cost-effective approach for a low-defect-density substrate on which aluminum indium gallium nitride (AlInGaN) light-emitting diodes (LEDs) can be fabricated. The efficacy of this GaN-ready substrate would then be tested by...

Briefs : Lighting
LED Display Engineering

The primary objective of this project was to develop and implement a method that compensates for the inefficiency of the green light-emitting diode (LED). The proposed engineering solution was to use RGBW combination in every pixel to save energy. A 32" x 16" display with pixel spacing of one inch, which is usually used...

Briefs : Energy
Self-Activating and Doped Tantalate Phosphors
Phosphors are useful in numerous applications including lighting. Tantalates are very promising materials because they are especially robust and resistant to chemical degradation. Studies have shown that rare-earth tantalates are excellent host lattices for europium (Eu)-doped red-emitting phosphors,...
News : Lighting
60-Watt Replacement Bulb Is A Winner

Yesterday, the DOE announced that Philips Lighting North America won the first award under the Department's Bright Tomorrow Lighting Prize (L Prize) competition. DOE's L Prize challenged the lighting industry to develop high-performance, energy-saving replacements for conventional light bulbs.

News : Lighting
New Method for Boosting the Light Output of Green LEDs

A Rensselaer research team led by Christian Wetzel, a professor of physics, etched a nanoscale pattern at the interface between a light-emitting diode’s (LED) sapphire base and the layer of gallium nitride (GaN) that gives the LED its green color. The new technique results in green LEDs...

Articles : Lighting Technology
Light Your World With Solid-State Lighting

Partly due to rising environmental concerns and the increasing cost of energy, the industrialized world is now replacing billions of conventional incandescent light fixtures. While a significant percentage of these applications are moving to compact fluorescent lamps (CFL), the concerns over the mercury...

Articles : Lighting
Meeting Industry Needs for LED Driver Testing

Because light-emitting diodes (LEDs) are a current-driven DC device, they require a converter so they can be powered from an AC voltage. LED drivers have different operating characteristics from the typical AC to DC, and DC to DC power supplies used for most electronic equipment. They are often a...

Briefs : Lighting
Self-Activating and Doped Tantalate Phosphors

Phosphors are useful in numerous applications including imaging, detection, and lighting. They come in forms of thin films, monoliths, or powders for miscellaneous devices, or dispersible nano particles for applications such as biomedical imaging. Oxide phosphors, as apposed to chalcogenides or...