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SemiLEDs C35 LEDs Create Stunning Accents In Twenty First Light's Hotel Alpha Project

CHUNAN, Taiwan, Jan. 7, 2014 (GLOBE NEWSWIRE) -- The tourist hotel complex (THC) Alpha in Moscow recently received a dramatic new façade wall-wash from Twenty First Light ltd, a Russian manufacturer of LED luminaire solutions, using SemiLEDs Corporation (Nasdaq:LEDS), C35 color and warm white LEDs. With substantial product support from SemiLEDs, Twenty First Light developed three types of saturated purple and warm white spotlights for the project to achieve both a powerful visual impact and high reliability for the distinctive lighting scheme.

"THC Alpha is a high profile landmark in Moscow, and as such, this was a high-exposure project for Twenty First Light that demanded a solution which would start out visually appealing, and then stay that way over the life of the installation," commented Sergey Stakharny, Director of Twenty First Light. "It was very important to us that the LED manufacturer both understood what we were trying to achieve, and would provide flexible support that minimized our engineering challenge while streamlining the project and maximized the reliability of the installed luminaires. SemiLEDs was able to meet those needs, contributing to the success of this program."

Twenty First Light tackled the project by developing three distinct types of luminaires, including 40W saturated purple spotlights for the individual balconies on the building's side, as well as narrow-beam 100W purple and 70W warm white spotlights illuminating the building façade for a color-fade effect from bottom to top. In addition, a series of prototype 150W RGB color-changing spotlights, also based on SemiLEDs C35 LEDs, were developed to allow on-site testing of different hue and saturation effects. With the final selection being a saturated purple, Twenty First Light was able to optimize the performance and value by engineering a static combination of blue and red LEDs matching the specified and tested shade. The LEDs were surface mounted on a single aluminum array plate, and supplemented by secondary optics to achieve a 10-degree beam angle. The 100W purple and 70W warm-white spotlights respectively replaced 400W and 250W high pressure sodium lamps netting over 70% energy savings.

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