LED + SSL

Republication of Postings from the U.S. Department of Energy (DOE) Solid-State Lighting Program by Jim Brodrick, U.S. Department of Energy As you may know, the U.S. Department of Energy’s (DOE) CALiPER program tests commercially available LED lighting products and publishes the results in a variety of formats — including Application Summary Reports, which focus on [...]

The U.S. Department of Energy (DOE) has published a new report, Color Maintenance of LEDs in Laboratory and Field Applications. Although concern for parametric failure of LED lighting products has largely been focused on lumen maintenance, color shift is a cause of early failure for some products, especially in applications where visual appearance is critical. [...]

Great snapshot of the LED rebate climate courtesy of BriteSwitch.

Republication of Postings from the U.S. Department of Energy (DOE) Solid-State Lighting Program by Jim Brodrick, U.S. Department of Energy Most of the attention given to solid-state lighting these days focuses on LED products, because OLEDs are several years behind their inorganic cousins in terms of development for general illumination. Despite some encouraging progress (e.g., [...]

Finelite has released an LED Talks video on the topic of flicker in LED luminaires, which was recently recognized by the IES for inclusion in the 2013 IES Progress Report for “advancement in methods or aids to facilitate lighting design and/or application.” The video is accompanied by a whitepaper. The video, presented by Terry Clark, [...]

The Alliance for Solid-State Illumination Systems and Technologies (ASSIST), a program of the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute, recently released a new publication to aid owners and facility managers of multifamily affordable and rental housing in selecting LED lighting products. The publication, The Lighting Field Guide: Upgrading to LEDs for Multifamily Housing, [...]

The Department of Energy will host its eighth annual two-day SSL Market Introduction Workshop for utility and energy efficiency program managers at the Benson Hotel in Portland, Oregon November 13-14, 2013. A free half-day of pre-workshop sessions will be held on November 12 for those new to or who want a refresher on solid-state lighting. [...]

I recently contributed a feature article to ELECTRICAL CONTRACTOR on color tuning as a capability of LED white light systems. The article talks about the potential utility this capability brings to architectural lighting applications, product developments and research. Check it out here.

Long life has been promoted as a key advantage of LEDs, but understanding and communicating how LED products fail and how long they last is essential. The U.S. Department of Energy has published a new SSL Technology Fact Sheet, Lifetime and Reliability, to help users understand typical causes for LED product failures, the difference between [...]