Research

Flicker and stroboscopic effects have been a concern with solid-state lighting (SSL), and industry and the ENERGY STAR program have debated recently the effects of frequency and other driving modes on the perception and acceptability of flicker. To provide further data and guidance in this area, the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute [...]

The Department of Energy has completed Retail Replacement Lamp product testing through the Solid-State Lighting (SSL) CALiPER program. A Summary Report containing the results is now available for download. This special testing was undertaken to identify and test performance of SSL replacement lamp products directly available to the general public through retail outlets (stores and [...]

Guest post by Jim Brodrick, Department of Energy This week, the Round 12 Summary Report for the CALiPER testing program was published, and as usual, the results are worth noting. For those of you who may not know, CALiPER stands for Commercially Available LED Product Evaluation and Reporting, and it’s a DOE program that supports [...]

The Department of Energy has completed Round 12 of product testing through the DOE SSL CALiPER program. A Summary Report containing the results from Round 12 testing is now available for download on the DOE SSL website here. Round 12 of product testing included six primary focus areas: SSL recessed downlights, SSL track lights, SSL [...]

Electrical contractors are an important influence in the lighting market, according to a new survey published by ELECTRICAL CONTRACTOR. The survey of more than 700 readers, conducted by Renaissance Research & Consulting, found that contractors make decisions about lighting during both the design and construction project phases. Highlights: * 97% said they work with indoor [...]

The U.S. Department of Energy (DOE) has published the final report from an evaluation of three LED products designed to directly replace linear fluorescent lamps in commercial ambient lighting. These three products were among the “best in class” of products designed for this application at the time of the study, as identified by DOE’s CALiPER [...]

The high-brightness (HB) LED lighting market (packaged chips) continues to grow and is forecasted to reach $4.3 billion by 2014, according to LED Luminaire Market Review and Forecast 2011, a new report by Strategies Unlimited. With this explosive growth, the HB LED fixture market will follow in the same fashion–growing to more than $8 billion [...]

The Commercial Buildings Energy Consumption Survey, produced by the Energy Information Administration at the Department of Energy (DOE), provides incredibly valuable information about how commercial buildings use energy and energy-using systems such as lighting and HVAC. If you wanted to know things like, “How many office buildings are in the Northeast?” or “What is the [...]

The National Lighting Product Information Program (NLPIP) at the Rensselaer Polytechnic Institute Lighting Research Center (LRC) released its latest publication, Specifier Reports: Streetlights for Local Roads, designed to provide objective performance information on streetlights for local roads in residential areas. Municipalities across the United States have applied for funding through the American Recovery and Reinvestment [...]