Cree to Showcase LED Lighting Solutions at Lightfair

srvctec

Flashlight Enthusiast
Joined
Feb 5, 2005
Messages
1,125
Location
Central USA
Hope nobody has posted this yet- didn't see it mentioned anywhere.

Here is the direct link to the press release.


Here it is copied from the above link.

Press Room Cree to Showcase LED Lighting Solutions at Lightfair

DURHAM, NC, MAY 3, 2007 — Cree, Inc. (Nasdaq: CREE), a leader in LED solid-state lighting components, today announced that it will showcase LED light for general illumination applications at Lightfair International, May 8-10, at Javits Convention Center in New York. In booth #2721, Cree will feature production and prototype models of streetlights and down lights using the company's XLamp® LEDs, demonstrating that the revolution in LED lighting is happening now.

"Companies have incorporated LEDs into different types of lighting fixtures for years – with varying degrees of success. But those early efforts were just a ripple compared to the wave of products coming to market," notes Norbert Hiller, Cree general manager and vice president of lighting LEDs. "Cree's new XLamp XR-E LEDs, the first true lighting-class LEDs, have enabled this oncoming wave. In our Lightfair booth, you'll see new LED streetlights and down lights that prove Cree's high-performance, high-efficiency LED technology is ready for general illumination applications. Real products for the lighting revolution are being shown."

Cree will demonstrate streetlights from:
* BetaLED (www.betaLED.com)
* IntenCity Lighting, Inc. (www.intencitylighting.com)
* Ledlight Group (www.ledlightgroup.com)
* Relume (www.lumecon.com)
* Stanley (www.stanley.co.jp)

Cree will demonstrate down lights from:
* Beta-Kramer (www.beta-kramer.com)
* LED Lighting Fixtures (www.LLFinc.com)
* Nebula Lighting Systems (www.nebulalighting.com)
* Panasonic Corporation (www.panasonic.com)
* Renaissance Lighting (www.renaissancelighting.com)

In addition, Cree will demonstrate future possibilities for LED technology and lighting applications with an interactive lighting display based on its advanced display technology.

For additional information on Cree LEDs, please call 919-313-5300 or visit www.cree.com.

About Cree, Inc.
Cree is a market-leading innovator and manufacturer of semiconductors and devices that enhance the value of 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 exciting 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 and green LED chips, lighting LEDs, LED backlighting solutions, power-switching devices and radio-frequency/wireless devices. For additional product specifications please refer to www.cree.com.

This press release contains forward-looking statements involving risks and uncertainties, both known and unknown, that may cause actual results to differ materially from those indicated. Actual results may differ materially due to a number of factors, such as the risk we may encounter delays or other difficulties in ramping up production of our new products; the risk we may be unable to manufacture products with sufficiently low cost to offer them at competitive prices or with acceptable margins; the rapid development of new technology and competing products that may impair demand or render our products obsolete; the potential lack of customer acceptance for the products; variations in demand for Cree's products and its customers' products; and other factors discussed in Cree's filings with the Securities and Exchange Commission, including its report on Form 10-K for the year ended June 25, 2006, and subsequent filings.

Contact:
Deb Lovig
Marketing Communications
Cree, Inc.
(919) 287-7505
 
My wife is an Applications Engineer at TI and went to APEC(Applied Power and Electronics Conference) in Anaheim, CA in Feb. and CREE was there showcasing their lighting solutions. I could of kicked her in the butt for not bringing me home some samples.
 
Last edited:
srvctec;

Thanks for the heads up.

I don't buy the press release from LED Lighting Fixtures.
http://www.ledlightingfixtures.com

I built a downlight from 3 P4 Crees that also uses 11 watts. It is only capable of 500 lumens vs the 650 lumens they are claiming.

The power supply I used is 90% efficient, so I don't think they can beat that figure.

Where are they getting the extra lumens using a less-efficient lower color temperature (3500 K) LED ??

Larry Cobb
 
Last edited:
Where are they getting the extra lumens using a less-efficient lower color temperature (3500 K) LED ??
They could be using more LEDs and underdriving them, or even using a combination of cool white and red or something like that. Or the numbers could be pulled out of thin air for marketing purposes.
 
LEDite said:
srvctec;

I don't buy the press release from LED Lighting Fixtures.

Ummmm, OK, that's your prerogative. I just posted the link and copied and pasted the info. I in no way endorse their claims or have any affiliation with them. Just was bringing this to everyone's attention if they weren't aware of it.
 
At lower currents Cree efficiencies can exceed 100L/W so 11W/650L is quite believeable IMO. At 1W input a P4 is about 75-80 lumens.

FWIW my bet is that it's using 10 emitters, 11W input = ~<1W to each emitter allowing for efficiency losses = 650L. At $300 or whatever the lights cost 10 emitters is supportable and the lower currents aren't just more efficient it leads to lower operating temps.
 
Last edited:
Matt;

A quote from Cree's web site:

"At warmer color temperatures, XLamp XR-E delivers typical performance of 56 lumens per watt at 3000 K"

So multiplying 56 lumens per watt times .9 for loss in power supply gives about 50 lumens per watt.

Even with underdrive, I don't they can deliver.

Larry Cobb
 
LEDite said:
Matt;

A quote from Cree's web site:

"At warmer color temperatures, XLamp XR-E delivers typical performance of 56 lumens per watt at 3000 K"

So multiplying 56 lumens per watt times .9 for loss in power supply gives about 50 lumens per watt.

Even with underdrive, I don't they can deliver.

Larry Cobb
The other way that it coudl be done would be as a combination of cool white, and separate red emitters. While that's a clever idea, and would probably result in better color rendering AND better efficiency than using warm white LEDs I doubt that's what they're doing.
 
I was strongly thinking of attending this show but $90 is a bit steep for me. Anyone know how I could score a free admission to just the exhibits? Or even the $60 VIP pass from an exhibitor would help.
 
Last edited:
Matt;

The only reason I am questioning their claims is because I have built a similar downlight.

I selected a switching power supply that was the most efficient out of 10 I tested @ 90%.

I used the best available "selected for efficiency Cree P4 leds" and did a lot of work on heak sink design to keep the LEDS operating at a long-lived temperature.

I am all for commercial fixtures that advance LED lighting, but I don't like to see unrealistic figures in advertizing.

Thanks;
Larry Cobb
 
Hi Larry,

I'm sure their claim is an 'at the emitter, based on mfrs spec' type claim. I'm all for realism in advertising but I think this type of claim is a common and accepted practice since about 99% of all mfrs use it.

Since the claim can be substantiated by CREE's datasheets it is not unrealistic or unbelievable to me. If you figure 11W at a 90% that's 9.9W to the LED's or 10 emitters at 1W, each producting 65L - I have no trouble accepting those as 'at the emitter' specs.
 

Latest posts

Top