Wednesday, August 31, 2011
Osraem's Next Dimension in LED Lamps: 30 Years Service Life, Omni-Directional - 340°, Over 1000 lumen
Monday, August 29, 2011
Saturday, August 27, 2011
Friday, August 26, 2011
Sunday, August 21, 2011
Wednesday, August 17, 2011
Sunday, August 14, 2011
LEDs & Health
Saturday, August 13, 2011
Educate Yourself with LED Lighting technology & the Quality LED Lighting products being sold in market today
The government has pushed for new labeling standards with what they call the Lighting Facts label (above) found on the package of the light source. These labels are helpful but can still be confusing to the average consumer and from what we have found, may still be misleading. If you see this on the packaging, it is a good thing, but you need to educate yourself on what the numbers mean and realize they many not be accurate.
Wednesday, August 10, 2011
Cree has demonstrated the brightest, most efficient, LED-based A-lamp that can meet ENERGY STAR® performance requirements for a 60 watt standard LED replacement bulb. This unprecedented level of performance is the result of Cree innovation, Cree barrier-breaking LED performance, Cree TrueWhite® Technology and patented Cree remote phosphor technology.
Saturday, August 6, 2011
Thursday, August 4, 2011
Wednesday, August 3, 2011
the Philips 10-watt LED lamp were submitted in 2009 and have completed 18 months of field, lab and product testing. Performance requirements included an output in excess of 900 lm, and a useful lifetime of more than 25,000 hours.
Philips says that it will receive $10 million as a cash prize, and will also participate in L Prize partner programs and incentives.
Philips also says that the lamp “could arrive in stores as soon as early 2012.”
In Edmonton, the city projects that the SSL project will deliver $2.6 million in energy savings over the expected 20 year life of the luminaires. The projection is based on 51% savings over the high-pressure sodium (HPS) fixtures that are currently in use. The local electric utility Epcor Utilities worked with the city to specify the LED luminaires.
Over the 20 year period, the city projects a reduction of 12,880 tonnes of greenhouse gas emissions. Moreover the aggregate electricity savings total 16,000,000 kWh.
”This project represents one of our largest deployments in Canada, and reinforces our message that municipal and other users are interested in reliability and are serious about conducting a total life cycle cost evaluation,” said LED Roadway Lighting CEO Charles Cartmill. “We are very excited about the future, and for this current opportunity to supply our fixtures to the City of Edmonton.”
Kingsun supplies 10,000+ luminaires
In Shenzhen, China, Kingsun has supplied more than 10,000 SSL luminaires for a roadway lighting project along a 120-km highway with three traffic lanes and an emergency lane in each direction. The project include both pole-mounted roadway lights and tunnel lights.
The Shenzhen project was a new roadway lighting project rather than a retrofit. Kingsun supplied 239W LED lights for the roadway where it's likely that 400W HPS lights would have been required for the project. Kingsun said the LEDs will deliver 60% energy savings.
The roadway lighting is deployed in a median belt that isolates the opposing traffic lanes. Each pole includes arm mounted luminaires on each side. Kingsun says the average illumination is more than 20 lx.
Cree has announced an LED-retrofit A-lamp that meets stringent performance goals, although the company has no immediate plans to market the product. The company has developed a prototype that delivers 1330 lm and consumes 8.7W, with an efficacy of 152 lm/W.
Cree says that the prototype “exceeds the performance goals” of the US Department of Energy (DOE) LPrize Competition in the 21st Century Lamp category. The DOE has yet to fully define the requirements of this third element of the L Prize competition, although it has said that 150 lm/W efficacy would be a requirement.
The new lamp looks significantly different than most LED retrofit lamps and decidedly different from a traditional incandescent bulb. In a video, below, Gerry Negley, Cree's CTO and co-inventor of the bulb, said, “I don’t know what lighting will look like in the 21st century. I can tell you it will not be constrained with shapes and technology of the past. It will not look like a traditional light bulb.”
Indeed we have already seen a number of SSL lamps that depart from traditional looks. But Cree is taking liberties in suggesting that the prototype might meet the undefined 21st Century L Prize requirements (except in terms of efficacy), and the unusual shape of the lamp could be an issue.
The prototype appears to be cylindrical in terms of the lighting globe or diffuser, as shown in the photo. And a cylindrical heat sink, which is larger than the optical element, forms the base of the lamp. Such a design would not provide an omnidirectional distribution of light. No one knows for sure what requirements the DOE will define for the third L Prize category. But we do know that in the 60W category, an omnidirectional distribution is a requisite.
Cree says that the prototype has a CCT of 2800K and a CRI of 91. Cree had the performance and color specifications verified by third-party testing lab OnSpeX.
A retrofit lamp in the 150 lm/W range could certainly have a big impact on energy usage. Cree co-founder Neal Hunter said, “We calculate that if fully deployed, LED lighting at 150 lm/W could bring a 16.5% reduction in US electrical-energy consumption, returning it to 1987 levels.” But Cree isn’t saying when such a lamp might be manufactured.
Back in January, Cree announced a prototype of a 60W-replacement lamp that it said was the first design that could meet Energy Star requirements. Since then Philips has achieved Energy Star compliance with its EnduraLED 60W-replacement lamp.
Cree has consistently said that its lighting systems business is primarily focused on helping customers of its LED components business solve design problems. Essentially Cree creates systems from which LED customers can borrow design elements. Cree does sell LED luminaires such as downlights and linear fluorescent replacement fixtures. To date the company has not sold LED retrofit lamps.