Research

The U.S. Department of Energy has published the final evaluation report from a retrofit of 32 track lights used to illuminate artwork in the lobby of the Bonneville Power Administration (BPA) headquarters building. During the demonstration, 12W LED PAR38 lamps replaced 15W and 23W reflector compact fluorescent lamps that were installed in 2001, and comparisons [...]

The U.S. Department of Energy (DOE) has completed Round 13 of product testing through the DOE Solid-State Lighting (SSL) CALiPER program. A Summary Report containing the results is now available for download on the DOE SSL website. Round 13 of product testing included three primary focus areas: LED and benchmark high-bay luminaires; LED wallpack luminaires; [...]

A fascinating study conducted by the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute found that satellite images of outdoor lighting are unrelated to actual light levels reaching the eye. These results challenge previous studies linking satellite images of outdoor lighting with increased incidences of breast cancer. Light entering the eye regulates our body’s circadian [...]

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 [...]