SAN JOSE, Calif. - Cree Inc. claims that it has banished last century’s lighting with a ''revolutionary'' LED light bulb.
Cree has demonstrated an LED-based A-lamp that can meet Energy Star performance requirements for a 60 watt standard LED replacement bulb. This is based on Cree's so-called TrueWhite Technology and remote phosphor technology.
The prototype bulb is dimmable and emits an incandescent-like color of 2700 K, with a CRI of at least 90, according to Cree. It delivers more than 800 lumens and consumes fewer than 10 watts and has been submitted for third party testing to validate the light distribution, lumen maintenance and performance.
No commercially available LED A-lamps meet the Energy Star performance requirements for 60 watt standard replacement bulbs at this level of efficiency and light quality, according to Cree.
“This is a significant milestone for the industry,” said Chuck Swoboda, Cree chairman and chief executive, in a statement. “In the race to commercialize low-cost, energy-efficient LED bulbs, the industry has forgotten that LED lighting is supposed to look as good as the technology it is replacing. This is the first no compromise replacement for a 60 watt incandescent bulb.”
''We have never announced an A19 replacement before. This is different for Cree and for the industry, because it’s the first that meets Energy Star criteria, which as you know, is the closest thing to standards the lighting industry,'' according to a spokeswoman for Cree.
''So, we’re announcing a demonstration, not an introduction. It hasn’t yet been decided how or if this will be brought to market. Pricing hasn’t been established yet, either but it was designed to be low cost. This was done to show the LED lighting industry that it is possible to create a 60W replacement (more than 800 lumens, consumes less than 10W) that delivers incandescent-like color (2700K),'' she added.
In reality, however, Cree is not the first to the market. In October, Philips’ new high quality LED replacement solution for traditional 60-watt bulbs won recognition from the American Lighting Association (ALA), the Consortium for Energy Efficiency (CEE), and the US Department of Energy (DOE).
For both homes and businesses such as hotels, replacing high concentrations of 60-watt lamps with the new Philips offering could save up to 80 percent of the energy used by other conventional light sources. The lamp can save up to $125 over the course of each lamp’s lifetime, which is rated at 25,000 hours of usage. It is also the longest lasting lamp on the market, helping to minimize maintenance costs as well.
Late last year, Lighting Science Group rolled out a new LED A19 bulb that will sell for under $30 and replace America’s most commonly used 60 watt incandescent bulb. Available in January, Lighting Science Group’s 850 lumen, 13 watt LED bulb is 75 percent more efficient than the 60 watt incandescent bulb it replaces and will last close to 23 years. By way of comparison, the company’s new LED bulb cost less, last twice as long and has a higher lumen output than Philips’ recently released 60-watt equivalent AmbientLED A19 bulb.
''I would take issue with Cree’s spokeswoman’s comments that their bulb is the only one that meets the Energy Star standard. LSG’s is available for under $30 dollars, and has been submitted for Energy Star approval—the company fully expects that they will get it—before next fall,'' according to a spokesman for LSG.
In upgrading a older home, and trying to keep it energy efficient, I've used several LED lamps. In a high chandelier I've got "early adopter" candelabra flame lamps by Lights of America. Lamp has eighteen or so single LEDs pointing up soldered to circular PC boards. One third of them failed--all LEDs quit so failure is in wiring or passive/active driver circuitry. In other apps I've found the best approach is actually a combination of two or all three sources: incandescent, CFL, LED. LEDs alone too harsh a color and too costly, CFLs poor CRI and slow warm-up, incands inefficient and no color variation and color change with dimming.
There will always be a place for a 60W incand up in a closet, for example. The worst part of the current state of lighting is the govt telling us what to use and not use. Lamp choice should always be a market driven and personal decision. Subsidies represent stealing from Peter to pay Paul.
LED lamps, particularly as used in automotive/military applications, are invaluable - and, no EMI problems! LED lamps for residential use will be standard very soon. If one has a problem with EMI from an LED lamp then that lamp is a very poor design or the wiring/socket is problematic. Oh, I routinely use CFL and regular white LED's for lighting in my home office - the color temperature is just fine; in fact, it matches my PC monitor!
I have one of those Home Depot A-bulb LED lamps. The color rendering is not great, but tolerable. What is horrible is the RFI - which knocks out even local FM stations on my nearby radio. Yecccch! Banished that sucker to a closet where it spends most of its time off.
Why the CREE can clamp the efficiency and power and even cost without mentioning the electronics to drive the LED? I don't think the LED is a real AC LED that can just plug in to the wall without any electronics to convert the power and voltage. So, even though the LED itself won't eat up too much electrical power and generate good enough lumens, it also has to count in the related LED driver for overall efficiency and of course this LED driver will add cost. More to say is that the lifetimes of most LED lighting nowadays are much shorter than what they claim! Why is that so? I believe one of the cause it the low cost and poor electronics that drive it! So this makes the equation more complex when we consider the advantage of LED lighting. So, in future it would be good to also consider what LED driver topology is the best to drive LED, both with robustness and efficiency.
Yes - if competently designed. It is harder to make a power LED to last for this order of time than it is to make matching power electronics. Any company able to handel the LED challenge 9Osram, Cree, Philips, Seoul, Agilent, Nichia, more ...) will easily be able to provide electronics that matches.
Brand and available technology is what counts.
Most of the top LED makers manufacture in China. If you bu\y from a reputable company the company of manufacture is irrelevant. That said - there are MANY bad LEDs available - many are chinese made. Due diligence is required to ensure they have access to capable technology.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.