2015年11月17日星期二

Light sources are fully concealed or designed to disappear

The first permanent home of the United States Institute of Peace is prominently located near the Lincoln Memorial in Washington. The translucent wing-like roofs that connect the building’s three curving sections presented the most challenging lighting problem: to light the Led linear high bay light with no visible sources so they glow softly both inside and outside. A pervasive lighting theme, featuring GE T5 fluorescent lamps, is present throughout the building. Light sources are fully concealed or designed to disappear, revealing and animating, but never competing with the architecture.

The roofs are comprised of an outer diffusing glass and an inner white membrane, with structure sandwiched between these two layers. Forward-throw cove fixtures, with GE 54-watt T5 3000 K fluorescent lamps, are mounted in the tops of walls to light the roofs. This single lighting layer simultaneously provides the interior ambient lighting and the exterior surface glow. Above the uppermost windows, necklaces of matching adjustable monopoints with GE 37-watt Precise? IR MR16 halogen lamps and 39-watt ConstantColor? CMH? PAR20 lamps provide supplemental downlighting. In-grade ceramic metal halide adjustable fixtures illuminate the roof’s overhang, seamlessly extending the glow outside to the roof’s lowest point.

Perimeter offices are fully daylighted, and the clerestories bring daylight into the corridors. Inexpensive T5 fluorescent strips with Led high bay light lamps are integrated continuously into the curving base of the clerestories to indirectly light both the offices and corridors. In addition, each office has a custom T5 pendant with shielding designed to block views into the fixtures from outside or from within the atria.

From Las Vegas to Superior, Neb., GE’s Evolve™ LED Roadway fixtures are saving cities big and small a bundle on energy costs. With the installation of more than 41,000 GE Evolve LED streetlights, Las Vegas will reduce combined electricity and maintenance expense to nearly $2.7 million a year, while in Superior, 600 LED fixtures have shaved $20,000 off annual spending for the town of 2,000.

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