LED + SSL

The California Lighting Technology Center recently tested 26 LED A-lamp products marketed as alternatives to 60W incandescent A-lamps. Data collected on power (W), voltage (V), luminous output (lumens), correlated color temperature (CCT), color rendering index (CRI), rated life, and dimming performance allowed for comparison with manufacturers’ claims as well as current lamp quality standards. The [...]

AT LIGHTFAIR, DOE experts presented on a wide range of solid-state lighting topics. These presentations, plus other materials, are now available for free download here.

There are many LED solutions available to upgrade from fluorescent T8 or T12, from new luminaires to retrofit kits and replacement lamps. Utility rebates for these LED solutions are growing but still not widespread. Here’s a BriteSwitch graphic showing what’s available now, based on their database. Learn more here.

Effective June 13, 2014, the U.S. Department of Energy suspended the L Prize PAR38 Competition. No entries will be accepted. The L Prize Competition launched in 2008 as the first government-sponsored technology competition designed to spur development of highly efficient, high-performance LED replacement products. A winning entry in the 60W replacement lamp category was awarded [...]

LightNOW recently reported on an Application Summary Report published by the Department of Energy’s CALiPER program, which evaluated bare-lamp performance for 31 linear LED lamps and found that while the lamps provided similar efficacy, tested average light output was half as much as the benchmark 32W fluorescent T8 lamp, and there was significant variation in [...]

Here’s an article I wrote about LED replacement lamps for the April issue of The Electrical Distributor (TED) Magazine, which you might find interesting: Demand for LED replacement lamps continues to experience rapid growth as performance improves and costs decline. According to Navigant Research, worldwide shipments of LED lamps will grow from 68 million in [...]

Republication of Postings from the U.S. Department of Energy (DOE) Solid-State Lighting Program by Jim Brodrick, U.S. Department of Energy Although solid-state lighting has come a long way in the past few years, it still has quite a ways to go to fulfill its considerable potential to save energy and improve the way we deliver [...]

The U.S. Department of Energy’s CALiPER program has released an Application Summary Report that focuses on the bare-lamp performance of 31 linear LED lamps intended as an alternative to T8 fluorescent lamps. The testing covered light output, input watts, efficacy, color, power factor and beam angle. Products listed as satisfying DesignLights Consortium criteria and those [...]

A research team led by the Institut de Physique et de Chimie des Matériaux de Strasbourg (IPCMS, CNRS/Université de Strasbourg), in collaboration with UPMC and CEA, has developed the first ever single-molecule LED. The device is formed from a single polythiophene wire placed between the tip of a scanning tunneling microscope and a gold surface. [...]