The U.S. Department of Energy's CALiPER program has released another special report on LED lamps that are available through the retail marketplace and targeted toward general consumers. CALiPER Retail Lamps Study 3.2 focuses on lumen depreciation and color shift in a subset of 15 LED A lamps from CALiPER Retail Lamps Study 3. The lamps were monitored in an automated long-term test apparatus for more than 7,500 hours.

The U.S. Department of Energy's CALiPER program has released a special report on LED lamps available through the retail marketplace and targeted toward general consumers. While previous reports in the CALiPER retail lamps series have focused on basic performance parameters, such as lumen output, efficacy, and color quality, the new report – CALiPER Retail Lamps Study 3.1 – focuses on the dimming, power quality, and flicker characteristics of a subset of 14 LED A lamps from CALiPER Retail Lamps Study 3, as controlled by four different retail-available dimmers.