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Home > Feature Articles > Alternative Energy Solutions > LED Lighting

LED Lighting -- Cool White LEDs and Warm White LED Lights

Cree announces cool white LED lights and warm white LED lighting that will hit the market in 2008-2009

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Cool White LED and Warm White LED Applications

Cree, Inc., a leader in LED lighting components, announced it has achieved R&D results of 129 lumens per watt for a cool-white LED and 99 lumens per watt for a warm-white LED. These are the best results reported for packaged, high-power LEDs.

The results have been verified by the National Institute of Standards and Technology (NIST). NIST’s tests confirmed that the cool-white (5,813 K) LED produced 135.7 lumens of light output and achieved 129 lumens per watt efficacy. The warm-white (2,950 K) LED produced 104.2 lumens of light output and achieved 99 lumens per watt efficacy. The institute tests LEDs at 350 mA and measures the output after five minutes of operation to ensure thermal stabilization.

In coming years, such investments in core LED technology could lead to products that replace traditional light sources in all commercial applications. Customers may see these technology advancements in commercial products within 12 to 24 months.

“To replace traditional light sources, LEDs need to provide both high light output and high efficacy,” comments John Edmond, Cree co-founder and director of advanced optoelectronics. “Cree continues to push the limits of LED performance in order to realize the potential of the LED lighting revolution – energy-efficient, long-lasting LED light.”

Cree's research and development facilities is located in Goleta, CA

Cree Santa Barbara Technology Center
340 Storke Road
Goleta, CA 93117
Phone: (805) 968-9460
Fax: (805) 968-9811

For more information on Cree high-power LEDs, please call (919) 313-5300 or visit

About Cree, Inc.

Cree is an innovator and manufacturer of semiconductors and devices that enhance the value of LED lights -- solid-state lighting, power and communications products by significantly increasing their energy performance and efficiency. Key to Cree’s market advantage is its world-class materials expertise in silicon carbide (SiC) and gallium nitride (GaN) for chips and packaged devices that can handle more power in a smaller space while producing less heat than other available technologies, materials and products.

Cree drives its increased performance technology into multiple applications, including alternatives in brighter and more-tunable light for general illumination, backlighting for more-vivid displays, optimized power management for high-current, switch-mode power supplies and variable-speed motors, and more-effective wireless infrastructure for data and voice communications. Cree customers range from innovative lighting-fixture makers to defense-related federal agencies.

Cree’s product families include blue LEDs and green LED chips, lighting LEDs, LEDs for backlighting, power-switching devices and radio-frequency/wireless devices. For additional product specifications please refer to

Edited by Carolyn Allen, owner/editor of California Green Solutions
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