The Department of Energy (DOE) Commercially Available Light-Emitting Diode (LED) Product Evaluation and Reporting (CALiPER) Program has been purchasing and testing general illumination solid-state lighting (SSL) products since 2006. CALiPER relies on standardized photometric testing (following the Illuminating Engineering Society, IES LM-79-08) conducted by qualified, independent testing laboratories.1 Results from CALiPER testing are available to the public through detailed test reports for each product tested and through periodic summary reports, which assemble data from numerous product tests and provide comparative analyses.
It is not possible for CALiPER to test every LED product on the market, and LED technology is constantly in flux, so it is important for buyers and specifiers to reduce risk by learning how to compare products and by examining every potential LED purchase carefully. CALiPER summary reports and detailed reports are an extensive resource, providing unbiased photometric data and explanations covering LED product performance in a wide range of lighting applications
Round 13 of CALiPER testing was conducted from June to September 2011. In this round, 19 products (14 LED and 5 conventional products for benchmarking purposes) representing a range of product types and technologies, were tested with both spectroradiometry and goniophotometry using absolute photometry. All 14 LED products were tested following the IES LM-79-08 testing method. To enable direct comparison of results, the 5 benchmark products were also tested using absolute photometry.
Round 13 of testing included three primary focus areas:
1. LED and benchmark high-bay luminaires
2. LED wallpack luminaires
3. LED and benchmark 2' × 2' troffers.
To view a summary of the findings from this Round of testing, please go to the following link:
http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/caliper_round13_summary.pdf
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