Friday, March 20, 2015

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L.A./Long Beach ports use plasma lights to fight light pollution

In an effort to address the long-term issue of light pollution at the Ports of Los Angeles and Long Beach, Georgia-based firm Bright Light Systems will supply a new form of LEP (light emitting plasma) technology that promises to cut energy consumption by 50 percent.

Light pollution — or misdirected light — has become a global problem, with groups like the International Dark-Sky Association raising concerns about the negative effect of artificial light on the environment and the circadian rhythms of humans.

The port operators and Southern California Edison plans to install the new lights that use a system of metallic reflectors that more effectively direct light particles. The fixtures rely on small, high-intensity bulbs filled with electrically charged gas, or plasma, considered the fourth state of matter, after solid, liquid and gas.

LEP is similar to LEDs, or light-emitting diodes, in that both are about 50 percent more efficient than sodium bulbs traditionally used for industrial lighting — the ones that emit a fuzzy orange halo. The

Photo credit: Chuck Bennett/Daily Breeze

advantage of plasma is the efficiency and quality of the light, which is closer to full spectrum sunlight than white LED light.

Bright Light Systems’ tall-pole units are used in ports, railroads, military bases and airports around the world.

For more of the Daily Breeze story:

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