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Lumileds emitters offer best beam candle power?


PHILIPS LUMILEDS has introduced LUXEON S, its second generation illumination-grade multichip emitters. The company says they offer twice the lumen density of existing solutions - an R9 value that exceeds 80 and has 50 percent better Colour over Angle variation over existing solutions.


Designed for retail, architectural and entertainment applications, LUXEON S emitters deliver up to 50 lumens per square millimetre and a high light output of up to 8000 lumens in narrow beams with sharp shadows. The LUXEON S1000, S2000, S3000 and S5000 emitters simplify the design of compact spotlights and downlights for architectural, retail and entertainment lighting solutions.


Because of the challenges in creating a small footprint with tight beam angles and high lumen density, luminaire designers have had to deal with large optics and limited lumen levels.


With LUXEON S, luminaire designers have more flexibility and can achieve beam angles in the 8 degree range in a compact design, with light levels that rival traditional CDM light sources.


The firm claims this flexibility enables never-before-possible Centre Beam


Candle Power of over 50,000 candela, compared to other LEDs, like Chip on Board solutions, with a larger Light- Emitting Surface that achieve less than 20,000-25,000 candela.


The new emitters feature correlated colour temperatures of 2700K and 3000K with a CRI of 80 or 90, as well as CCTs of 3500K, 4000K and 5000K at CRI of 80. In the 90 CRI products, R9 value exceeds 80, making them ideal for applications requiring exceptional colour renderings such as in premium retail and museum applications.


Cree smashes R&D record with 276 lumen-per-watt LED


CREE claims it has hit another industry first with a barrier-breaking 276 lumen-per- watt white R&D power LED.


This significant milestone exceeds Cree’s previous R&D industry record of 254 lumens per watt and demonstrates Cree’s continued commitment to innovate and accelerate the adoption of LED lighting.


Cree’s innovative SC3 Technology


Platform, available today in Cree XLamp LEDs, enables this record-breaking R&D result. The SC3


Technology Platform


features advancements in LED chip architecture and phosphor and boasts a new package design to deliver the most


advanced LED components in the industry. Cree reports that the LED efficacy was measured at 276 lumens per watt, at a correlated colour temperature of 4401 K and 350 mA.


“The core of the Cree R&D culture is a relentless focus on innovation that ultimately drives LED adoption,” says John Edmond, Cree co-founder and director of advanced optoelectronics. “The innovation from our labs is the foundation for our lighting-class XLamp LEDs. Higher performance LEDs can enable new and better LED-based applications and drive down the solution cost of LED designs.”


March 2013 www.compoundsemiconductor.net 11


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