You can still browse the site but some services may not work properly. This site requires Google Chrome, Firefox, Safari or Internet Explorer 10 and above. For mobile devices use an HTML5 capable browser.Download Chrome
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.On average, the lumen maintenance of the LED lamps was better than either of the benchmark lamps (CFL and halogen), but there was considerable variation from lamp model to lamp model. A key takeaway is that the long-term performance of LED lamps can vary greatly from model to model.