http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/ Engadget Comments for Researchers using nano-imprint lithography to make LEDs brighter http://www.engadget.com/media/feedlogo.gif http://www.engadget.com en-us Copyright 2012 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Dec 31st 2007 8:02AMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Dec 31st 2007 8:24AMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Dec 31st 2007 10:39AMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/
Just use 2 of 'em.]]>Dec 31st 2007 8:33AMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Dec 31st 2007 9:55AMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Dec 31st 2007 9:02AMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/
Maybe you should take a break, change the Nintendo biased icon, and not comment about Nintendo based games in an article that has nothing to do with Nintendo, games, or planets.

...or get some glasses/new monitor.]]>Dec 31st 2007 3:55PMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Dec 31st 2007 10:01AMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/
There isn't one.

Hooray for useless but still better technology.

]]>Dec 31st 2007 3:34PMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Jan 6th 2008 4:28AMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Jan 1st 2008 5:01AMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/
Today the Thin Film Technology Luxeon Rebel's and Cree XR-E LED's have crossed 100 lumens per watt in terms of efficiency... easily challenge the high efficiency CFL's

Added Advantage for for LED's apart from being hyperefficient is they do not require Mercury or Lead, last 50K hours and are more pleasing to Eyes.

I have a small reviews site for LED Flashlights at http://www.cpfreviews.com ... flashlights have come a long way since MiniMag AA was considered as Professional Tool.... Today, we have Flashlights in which we can Program Light Output Levels and a flashlight just the size of bezel of MiniMag AA could produce upwards of 150 Lumens Lasting for more than 2 hours Regulated. (MiniMag Produces 4 - 7 Lumens, non Regulated, 1 hour and diminishing to less than 1 lumen in 2 hours!!!)]]>Dec 31st 2007 2:16PMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Dec 31st 2007 3:51PMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/
http://www.physorg.com/news93198212.html]]>Dec 31st 2007 3:57PMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/Dec 31st 2007 11:49PMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/
1. "fair bit brighter" means exactly HOW MUCH BRIGHTER? (Someone mentioned 2x the brightness above but I havent read that anywhere yet) Seems to me they should say exactly HOW Much is gained by this process.

2. What does this process do to lifespan?
Does brighter mean shorter lifespan? Assuming this one also lasts 50K hours fine.

3. Are there new increased heat issues with the brighter bulbs? Brighter normally means HOTTER.. or are these increased brightness yet same temp due to more effecient use of the same use of power?

Someone with specifics please reply.

thanks]]>Jan 5th 2008 3:18PMhttp://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/http://www.engadget.com/2007/12/31/researchers-using-nano-imprint-lithography-to-make-leds-brighter/
a lot of the light produced inside an LED is unable to escape from the semiconductor (ie the material that produces the light) because it gets internally reflected (imagine the light is generated inside a box, and the inside of the walls are mirrors - the idea is to make the mirrors more like windows in order to let the light out of the box).

Roughening of the surface (easiest idea to imagine) can help to reduce the reflectivity of the side walls of the LED. This enables more photons (light particles) to escape - and in fact would REDUCE the temperature of the device as these photons do not get stuck inside and turn into heat.

It sounds as though they are simply increasing extraction efficiency, but it is unclear if it is a photonic crystal type approach (basically making a pattern of holes to choose wavelengths of light to transmit - like the pattern of holes on your microwave door that stop that wavelength of radiation from escaping through the glass door).]]>Jan 1st 2008 9:18PM