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Larry.Cormier1
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re: Solid-state lighting coming into focus
Larry.Cormier1   3/28/2011 1:15:51 PM
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The mercury in CFLs is more than offset by the reduction in airborne mercury(a worse form) savings in energy production (as compared to tungsten lights). And, how do you know "the vast majority" are not recycled? When LEDs become the dominant light source, will we then have a low voltage DC wired through our houses for light fixturing, eliminating any need for LED bulbs with extra circuitry?

Code Monkey
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re: Solid-state lighting coming into focus
Code Monkey   3/25/2011 9:25:23 PM
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I'll be glad to see CFLs go. Each dead lamp is mercury-containing hazardous waste (exempt from RoHS of course) with the vast majority thrown straight into the trash.

Raymond.Rogers_#1
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re: Solid-state lighting coming into focus
Raymond.Rogers_#1   3/25/2011 8:38:19 PM
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Your right except: When the real energy supplies start costing more, then efficiency and low usage starts paying for itself. It does very little good to rant and rave about energy usage or dependency; until the cost is reflected in prices. It might buy votes to keep energy prices low but it's a disservice to our children. Ray Ray

lulala1234
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re: Solid-state lighting coming into focus
lulala1234   3/25/2011 6:45:38 PM
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Ga supply will be the ultimate limiting factor.

MeirG
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re: Solid-state lighting coming into focus
MeirG   3/24/2011 11:43:20 AM
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Mr. Stephan Ohr of Gartner might not be aware of it, but "Ohr" in Hebrew means "light"!

pixies
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re: Solid-state lighting coming into focus
pixies   3/23/2011 8:07:10 PM
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I do not think LED will lead to energy savings. Although LED is a lot more energy efficient per unit, as the cost of LEDs comes down, people will find a lot more uses for it, therefore dramatically increase the number of units installed. The safety cloth is a good example. Same argument was made for paper when computer became widely accepted, but people end up using a lot more paper.

R_Colin_Johnson
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re: Solid-state lighting coming into focus
R_Colin_Johnson   3/23/2011 1:01:09 AM
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You are right except for one caveat--the environment. Every day I hear of a new solution to the "barrier film" problem--today it was nanoparticles that fill-in the pores which allow moisture and oxygen to spoil OLEDs on plastic substrates. Unless one of these "breakthroughs" actually does solve the barrier-film problem, OLEDs will never get printed on web presses, but will always need glass substrates (and thus will never achieve price parity with fluorescent).

R_Colin_Johnson
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re: Solid-state lighting coming into focus
R_Colin_Johnson   3/23/2011 12:55:12 AM
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You may have a point, especially for low-voltage AC applications, but the majority of development work today is using conventional LEDs and DC drivers.

R_Colin_Johnson
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Blogger
re: Solid-state lighting coming into focus
R_Colin_Johnson   3/23/2011 12:45:21 AM
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Luminous output is catching up fast--in fact by 2012 advanced gallium nitride LEDs are predicted to become the brightest light source on the planet--even brighter than arc lamps. The price, however, is going to come down gradually as volume ramps up.

R_Colin_Johnson
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Blogger
re: Solid-state lighting coming into focus
R_Colin_Johnson   3/23/2011 12:43:46 AM
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The thing I like about the LED luminares is that their light quality is better than fluorescents--at least in the models designed to provide "warm" light. Before I use a CFL, I have to judge whether I can put up with poor light in that location. High-end LEDs rival halogen. But, as you say, the price has got to come down. I'd guess that $10 a bulb would convert most people and $5 the rest.

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