The CALiPER (Commercially Available LED Product Evaluation and Reporting) program was launched by DOE in 2006 to address a need for unbiased, trusted product performance information in the early years of SSL. CALiPER testing and analysis, conducted by accredited test labs using industry-standard test procedures, helped to discourage low-quality pro [..]

Biological rhythms that repeat approximately every 24 hours are called circadian rhythms. Light helps maintain the circadian clock, and researchers are working to better understand how lighting can support or disrupt circadian rhythms.

Indicates how warm/cool light is. CCT is measured in Kelvin (K). Higher values (>5,000K) indicate a cooler/bluer light color; lower values (<4,500K) indicate a warmer/more orange light color.

Indicates the light’s ability to render colors across the spectrum.

The ability for devices to coexist in a system without corrupting, interfering with, or hindering each other’s operations.

A light fixture (also known as a luminaire) includes one or more lamps, a fixture body, and a light socket.

The most commonly used technology by municipalities today; they emit an orange or burnt yellow color

A membership-based organization that communicates information on all aspects of lighting, including the development of standards, guidelines, and testing requirements.

Indicates the light intensity on a surface per unit area. It is measured in footcandles (fc). 1 fc = 1 lumen/square foot.

The most outdated and least efficient street lighting technology available. They emit a warm yellow glow.