Philips wins $10M L Prize for LED-based 60W replacement bulb article tells that Philips wins $10M L Prize for LED-based 60W replacement bulb. The bulbs had to meet or exceed a set of requirements: greater than 900lm at 10W or less (efficacy of greater than 90W/lm) at a color-corrected temperature (CCT) of 2700-3000K and a color rendering index (CRI) of at least 90.
The winning Philips bulb uses a clever remote phosphor system to gain a spherical distribution of light. For more details on that read the Philips LED bulb tear-down article.
L Prize competition is planned to accelerate America’s shift from inefficient, dated lighting products to innovative, high-performance products. DOE’s first L Prize category launched in 2008 targets the 60-watt bulb because it is one of the most widely used types of light bulbs by consumers, representing roughly half of the domestic incandescent light bulb market (more than 425 million bulbs sold in USA every year).
6 Comments
Tomi Engdahl says:
LED First: Switch’s 100W-Equivalent Hits Market
http://www.earthtechling.com/2012/03/led-bulb-first-switchs-100w-equivalent-hits-market/?cid=EM_EDNMicro
There have a been a number of light bulbs introduced on the market to replace energy-sapping incandescent bulbs, but few have gotten the attention—before it went on sale
But now San Jose-based company is launching its Switch100 LED replacement bulb, heralded as the first 100-watt equivalent to hit the market.
Tomi Engdahl says:
Hitachi to enter 100W LED bulb market in Japan
http://www.edn.com/electronics-blogs/powersource/4376095/Hitachi-to-enter-100W-LED-bulb-market-in-Japan?cid=Newsletter+-+EDN+Weekly
Hitachi has announced that it will offer 100W-equivalent LED bulbs, joining companies such as Philips, GE, and Sylvania. (A typical 100W incandescent bulb has an output of about 1700 lm, for an efficacy of 17lm/W.)
The company intends the bulb for sale only in Japan; It has not released what the actual lumen output is or its power consumption. Also, at 123mm long, the bulb is about 1cm longer than a 100W incandescent lamp, it can’t be used in outdoor applications, and is non-dimmable.
On the other hand, the light automatically lowers its light output and therefore temperature when the temperature or external humidity becomes too high, making it suitable for closed appliances or fixtures such as down lights. Many incandescent replacement lights, such as some CFLs, are not suitable for down lights because the enclosed environment causes overheating and early failures.
Kory Puccini says:
Incandescent lights are not very energy efficient which is exactly why we need to replace them with far more efficient lamps such as CFL.
Lester Solich says:
Incandescent lights waste so much electricity compared to fluorescent lamps. `
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Ilse Marbray says:
incandescent lamps are not very efficient when it comes to electrical consumption ,
Darwin Deturenne says:
Incandescent bulbs are so called because of the heat produced. Incandescence means to glow with heat. The tungsten filament is found inside a void within the bulb. When energy is pumped through the wire, the electrons react and there is resistance. Then, the filament will get so hot it will glow.,