Lighting

Bright and Economical LEDs Enable Mobile Projection

3M, St. Paul, MN www.3m.com
OSRAM Opto Semiconductors, Sunnyvale, CA www.osram-os.com

Micro projectors from 3M that can be connected to mobile phones and cameras include LEDs from...

Sliding Mode Pulsed Current Averaging IC Drivers for High-Brightness Light Emitting Diodes

SynDiTec Inc.,
San Jose, CA

This project developed new light emitting diode (LED) driver ICs associated with specific (uniquely operated)...

Development of Advanced LED Phosphors by Spray-based Processes for Solid-State Lighting

Cabot Corp.,
Boston, MA

The overarching goal of this project was to develop luminescent materials using aerosol processes for making improved...

Piezoelectric Switch for Controlling Lighting

Piezoelectric materials convert mechanical energy into electrical energy, and electrical energy into mechanical energy. They generate electrical charges in response to mechanical stress and...

Nanofiber-based Lighting Technology

A lighting technology from RTI is more energy efficient than the common incandescent light bulb and does not contain mercury, making it environmentally safer than the compact fluorescent light (CFL) bulb....

OLED Deposition Technology

Low-cost processing methods will be required if the small organic molecule materials currently under development for use in organic light emitting diodes (OLEDs) and other electronics are ever to realize wide...

Recovering Raw Materials for Green Technologies

Engineering researchers from the University of Leeds have discovered how to recover significant quantities of rare-earth oxides, present in titanium dioxide minerals. Rare-earth oxides are...

Reflective Switch Employed in Wind Turbines for RPM Sensing

The OPB732 Series long distance infrared reflective switch from TT electronics OPTEK Technology (Carrollton, TX) has been employed in a 6kW wind turbine for RPM sensing. Placed at...

Research: Reducing Energy Consumption in Street Lighting

Experts from Rensselaer Polytechnic Institute's Lighting Research Center (LRC) estimate that about half of the approximately 13 million streetlights in the U.S. have the opportunity to...

LED Characterization System

As part of the design process, engineers must predict the performance of their LED system and determine if it will meet specifications at real operating temperatures and electrical drive conditions. The ETΦ™...

Germany Takes the 2009 Solar Decathlon

Today, DOE Deputy Secretary Daniel Poneman announced the winners of the 2009 Solar Decathlon competition on the National Mall in Washington, D.C. The student team from Darmstadt, Germany, won top...

People, Prosperity, and the Planet (P3)

The EPA has awarded 43 grants to teams of university students who will design technologies addressing sustainability challenges in the developed and developing world. The People, Prosperity, and the...

White LED Driver Offers Dynamic Backlight Control

Portable media devices have increasingly larger displays and longer video playback, and require more power. The LM3530 from National Semiconductor Corp. (Santa Clara, CA) employs ambient...

Large Area OLED Device

Novaled (Dresden, Germany) developed a 15 x 15 cm white OLED with a thickness of less than 2 mm. The Novaled OLED stack allows for a natural and warm white light, performing with a high color rendering index (CRI) of...

Breakthrough, Ultrathin LEDs

A new LED display process developed by an international team of researchers offers properties like see-through construction and mechanical flexibility - which would be impossible to achieve with existing...

Nanocrystals Could Aid in Solid-State Lighting and CO2 Storage

Scientists at Berkeley Lab have created non-toxic magnesium oxide nanocrystals whose size can be adjusted within just a few nanometers. The nanocrystals glow blue when exposed...

Emitters Provide Flexibility

Philips Lumileds (San Jose, CA) expanded its LUXEON® Rebel family of LEDs with nine new emitters designed for illumination solutions such as recessed lighting, street lamps, and retrofit bulbs. The new LEDs...

LED Driver Increases Component Longevity

Supertex, Inc. (Sunnyvale, CA) introduces a buck-mode LED driver IC with hysteretic current control and high-side current sensing. The HV9918 is ideal for a variety of solid-state lighting...

Efficient Light Source Technology

New cavity organic light-emitting diode (COLED) technology from SRI International and light-emitting polymers from Showa Denko K.K. (SDK) produce a highly efficient light source that could replace...

Energy-Saving LED Luminaire

Operating on just 150 watts, the powder-coated aluminum SafeSite® LED High Bay luminaire is designed to perform for over 10 years in demanding applications - three times as long as traditional HID fixtures, and...

Measuring LED and Solid State Lighting Performance

Light emitting diodes (LEDs) and solid state lighting (SSL) products that incorporate LEDs pose many measurement challenges compared with other lighting elements, such as traditional...

Going Green in the Workplace with LEDs

In August 2007, Cree’s management made a bold decision to replace the existing fluorescent lighting technology at its Durham, NC facility with new energy-saving, environmentally friendly LED lighting...