Search Menu
Photonics Media Photonics Buyers' Guide Photonics Spectra BioPhotonics EuroPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook
More News

Cree Reports Laboratory Advances in High-Power LEDs

Facebook Twitter LinkedIn Email Comments
Caren B. Les

Cree Inc. of Durham, N.C., has achieved higher efficacy from packaged high-power LEDs. The results have been verified by the National Institute of Standards and Technology, based in Gaithersburg, Md. Tests conducted by the institute have confirmed that the cool-white (5813 K) LED has produced 135.7 lm of light output and achieved 129 lm/W efficiency, and that the warm-white (2950 K) LED has produced 104.2 lm of light output and achieved 99 lm/W efficiency. The institute tests LEDs at 350 mA and measures the output after five minutes of operation to ensure thermal stabilization

These research and development devices — not commercially available — incorporate advances in chip design and production, in epitaxial layers and in phosphor technologies. The company’s commercially available XLamp XR-E LEDs, on which the LEDS tested are based, are geared toward general illumination applications.

Photonics Spectra
Oct 2007
Cree Inc.Featureslight outputlight sourcesLEDs

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA,

Photonics Media, Laurin Publishing
x Subscribe to Photonics Spectra magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.