Posts Tagged ‘LED’
The folks at the National Renewable Energy Laboratory are applying a fabrication method for building highly efficient multi-junction solar cells to aid in the quest to increase LED efficiency for white light.
Green light: This gallium-indium phosphide LED was fabricated by researchers at the National Renewable Energy Laboratory.
Solar-cell manufacturing techniques could yield LEDs that require 20 percent less energy.
A new approach to fabricating light-emitting diodes (LEDs) could be used to increase their efficiency by 20 percent while yielding higher-quality light than conventional LEDs. Researchers at the National Renewable Energy Laboratory (NREL) in Golden, CO, have demonstrated the approach by making a yellow-green LED that could soon be combined with other colored LEDs to yield white light. The new LED could help replace current, inefficient methods of generating white light…
-Green LEDs Continued
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Add another nail in the coffin for incandescent lighting.
Incandescent to LED – Continued
Credit - CNET | Greentech
Toshiba announced Wednesday it has produced its last major run of incandescent lightbulbs.
The Japanese electronics manufacturer said the phaseout is part of a strategy to ultimately concentrate on LED (light-emitting diode) lighting products, though it will continue to produce certain specialty incandescent bulbs.
Incandescent lighting has been dwindling in use over the last five years in large part to citizen and government phase-out campaigns that include laws for an eventual ban on the sale of the electricity-guzzling light source. Many countries have already passed laws with deadlines looming.
Incandescent to LED – Continued
When A&K Energy Conservation, Inc. meets with our vendors, and the LED topic comes up. There is a concern that the scores of rushed, untested, and unproven LED systems that make it to market will ruin an otherwise excellent technologies perception to the buying public. It is very important to make sure that you are buying a quality LED system. It can be tough to figure out who is good and who is not. The good news is that the Department of Energy has been paying attention to all of this and has developed a program to test the claims of these mfg’s. They call it the CALiPER Program for LEDs (SSL-solid state lighting).
What is CALiPER?
DOE’s SSL Commercially Available LED Product Evaluation and Reporting (CALiPER) program independently tests and provides unbiased information on the performance of commercially available SSL products. The test results guide DOE planning for ENERGY STAR® and technology procurement activities, provide objective product performance information to the public, and inform the development and refinement of standards and test procedures for SSL products.
A&K Energy Conservation, Inc. has had the pleasure of working with Lighting Science in the past. As a Lighting Maintenance Contractor, we have installed quite a few of their LED systems. Great stuff, and we plan to write something about LSG from our own experiences in the future. However, it was no surprise to see the US NAVY (or anyone for that matter) taking advantage of the new LED pole light and wallpack luminaires in the news.
“SATELLITE BEACH, Fla., Feb 23, 2010 /PRNewswire via COMTEX/ — In what may be the largest lighting retrofit and upgrade in Navy history, Lighting Science Group Corporation (LSCG.PK) and the United States Navy are relighting the streetscapes, parking lots and the residence quarters at two separate sites at the Naval Base Ventura County (NBVC) California — Port Hueneme and Point Mugu — with energy efficient LED (light emitting diode) lighting solutions.” -Lighting Retrofit -Continue
The point here is that LED is staying for a while. Manufacturers are finding useful ways to bring this technology to market. It makes perfect sense when you look at the energy savings, inherent long life and lumens per watt advances.
High power LEDs from Philips Lumileds Lighting Company mounted on a 21 mm star shaped base metal core PCB (image credit: wikipedia)
LED’s meteoric rise from a status or test light to spacial lighting has been nothing less than astonishing. LED’s (specifically HPLEDs) are emerging as a great new tool in the array of lighting available to the commercial, government and private sectors. As a lighting maintenance contractor, we have had the pleasure installing some of these new fixtures with great effect. The maintenance and energy savings are very attractive attributes when coupled with the right applications.
We have been told by those pioneering LED technology, that this is the future of lighting. Huge efforts and money have been spent advancing LEDs to the point where they are barely recognizable to it’s predecessors.
Wikipedia has what we think, a pretty well written resource for those wanting to brush up on the history and direction of LEDs.
“ light-emitting diode (LED) (pronounced /ˌɛl.iːˈdiː/[1]) is a semiconductor light source. LEDs are used as indicator lamps in many devices, and are increasingly used for lighting. Introduced as a practical electronic component in 1962,[2] early LEDs emitted low-intensity red light, but modern versions are available across the visible, ultraviolet and infrared wavelengths, with very high brightness. – Continue
http://en.wikipedia.org/wiki/Light-emitting_diode