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28 September 2009

 

Cree claims the most lighting-class LEDs for designing ENERGY STAR-compliant LED fixtures

LED chip, lamp and lighting fixture maker Cree Inc of Durham, NC, USA claims that it has the most lighting-class LEDs meeting the US Department of Energy (DOE) ENERGY STAR performance criteria, offering fixture manufacturers benefits when designing with the firm’s XLamp XR-E, XP-E or MC-E white LEDs.

The DOE’s ‘ENERGY STAR Manufacturer’s Guide for Qualifying Solid-State Lighting Luminaires’ requires that LED fixture manufacturers seeking ENERGY STAR Category A approval test their luminaires for a minimum of 6000 hours (about 9 months) to demonstrate the product's long-term lumen maintenance. In lieu of performing this lengthy and costly testing, the DOE will accept an LED maker's lumen maintenance data if the LEDs are tested to the Illuminating Engineering Society (IES) approved method for ‘Measuring Lumen Maintenance of LED Light Sources’, LM-80-08.

The DOE accepts Cree’s IES LM-80 test data for its XLamp XR-E, XP-E and MC-E LEDs. This test data can be submitted by luminaire manufacturers (along with the appropriate LM-79 optical and electrical data) to the DOE for ENERGY STAR approval of both 25,000-hour residential and 35,000-hour commercial lighting products.

“Customers can avoid expensive and prolonged fixture testing by designing-in XLamp XR-E, XP-E or MC-E LEDs,” says Paul Thieken, Cree’s director of marketing, LED components. “XLamp LEDs were also the first to be binned to ANSI C78.377A chromaticity back in 2007 and feature excellent white-point stability—further simplifying the design of LED fixtures to meet ENERGY STAR requirements,” he adds.

In addition, Cree’s lighting-class XLamp XP LEDs became UL-recognized on 4 August (registration file OOQA2.E326295). Due to the glass lens, Cree’s XLamp XR family and MC-E LEDs are considered enclosures by UL and do not require registration.

Information on Cree’s LM-80 testing methodology can be found in the recently published Lumen Maintenance Application Note.

Search: Cree LEDs

Visit: www.cree.com/LM80

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