Lighting

Avago Technologies (San Jose, CA) has introduced the HLMP-Lx75, HLMP-Hx74/75, and HLMP-Ax74/75 series of high-brightness oval throughhole LEDs for electronic signage applications. The LEDs’ matched RGB radiation pattern is designed to maintain consistent light and uniform color mixing from all viewing...

Jenoptik, Jena, Germany
LEiDS, Backnang-Waldrems, Germany

The Lucid power high-bay light-emitting diode (LED) system from Jenoptik and LEiDS was developed for use in high halls and buildings. The hall and high rack luminaire ensures an efficiency of more than 100 lm/W at a lifetime of up to 60,000...

University of Illinois researchers have developed a method to chemically etch patterned arrays in the semiconductor gallium arsenide - used in solar cells, lasers, light-emitting diodes (LEDs), field effect transistors (FETs), capacitors, and sensors.

A research team funded by the Air Force Office of Scientific Research has pioneered the use of micro-plasmas in a revolutionary approach to illumination, and doctors Gary Eden and Sung-Jin Park of the University of Illinois, Urbana-Champaign, have founded Eden Park Illumination, Inc. to bring...

The LT3597 from Linear Technology ((Milpitas, CA) is a 60-V triple step-down LED driver capable of achieving 10,000:1 digital PWM dimming at 100 Hz with fast NPN current sources driving up to 10 LEDs in each channel. LED dimming can also be achieved via analog control of the CTRL1-3 pin.

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

Economics is a key factor for application of organic light emitting diodes (OLED) 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...

Regular light-emitting diodes (LEDs) can be turned into an optical wireless local area network (WLAN) with only a few additional components, thanks to visible light communication (VLC).

Researchers from University of Michigan (U-M) have partnered with China's Shanghai Jiao Tong University (SJTU) to explore how high-efficiency smart facades can capture and store solar energy, and transmit its light while simultaneously controlling heat transmission.

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...

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...

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...

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...

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...

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...

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...

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.

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...

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...

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...

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,...

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...

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...

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...

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...

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.

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...

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.

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.