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The L-Prize competition was designed to spur development of LED light replacements for 60W incandescent lamps and PAR38 halogen lamps as well as an ultra-efficient "21st Century Lamp". [1] It was established by the United States Department of Energy (DOE) as directed by the Energy Independence and Security Act of 2007 .
The most common type of floodlight was the metal-halide lamp, which emits a bright white light (typically 75–100 lumens/Watt). Sodium-vapor lamps are also commonly used for sporting events, as they have a very high lumen to watt ratio (typically 80–140 lumens/Watt), making them a cost-effective choice when certain lux levels must be provided. [4]
Thorn Lighting Ltd, a subsidiary of the Zumtobel Group, is a global supplier of both outdoor and indoor luminaires and integrated controls. Thorn was founded when Sir Jules Thorn started The Electric Lamp Service Company Ltd, in 1928, dealing in incandescent filament lamps .
A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
Irideon, Inc. was a subsidiary company formed by Vari-lite in 1994, to target the architectural lighting market by offering colour-changing luminaires, able to dramatically illuminate buildings and outdoor structures in ways which—until then—could only be imagined. Two Irideon luminaires were initially produced: The AR500 and the AR5.
The project led to the creation of Musco's Mirtran system, which featured lights that were aimed away from the track onto secondary, ground-level mirrors that bounced the light back onto the racing surface. The project earned Musco an IES Illumination Award for Outdoor Lighting Design by the Illuminating Engineering Society. [12]
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