Posted on 01/10/2008 3:14:22 PM PST by blam
Brighter LED Lights Could Replace Household Light Bulbs Within Three Years
ScienceDaily (Jan. 10, 2008) Researchers are developing new technology that could replace the household light-bulb within three years.
Light Emitting Diodes (LEDs), already used in electrical equipment such as computers and mobile phones, are several times more energy efficient than standard light-bulbs. However, because of their structure and material, much of the light in standard LEDs becomes trapped, reducing the brightness of the light and making them unsuitable as the main lighting source in the home.
Now researchers believe they have found a way of introducing a new generation of LEDs into households that are brighter and use even less power than standard energy efficient light-bulbs.
Dr Faiz Rahman, the researcher leading the project at the University of Glasgow, said: By making microscopic holes on the surface of the LEDs it is possible to extract more light, thus increasing the brightness of the lights without increasing the energy consumption. As yet, LEDs have not been introduced as the standard lighting in homes because the process of making the holes is very time consuming and expensive. However, by using world-class facilities at the University of Glasgow we believe we have found a way of imprinting the holes into billions of LEDs at a far greater speed, but at a much lower cost.
LEDs not only use less power than current energy efficient light-bulbs but they are much smaller and can last years without needing to be replaced. This means the days of the humble light-bulb could soon be over.
The team of researchers use a technique called nano-imprint lithography to directly imprint the holes, imperceptible to the human eye, onto the LEDs allowing more of the light to escape.
The project is being developed in conjunction with the Institute of Photonics, University of Strathclyde, Mesophotonics Ltd and Sharp Laboratories of Europe, as part of the BERR Technology Programme.
Adapted from materials provided by University of Glasgow.
Truth no, Negative Allegations,Yes
Wont work in an oven.
It’s too cramped to read in there anyway...
Some things are forever.
Fire is still the best source of heat
The wheel is still the best transportation
firearms are still the best self defense weapons
Beer still beats water(or anything else)
Dogs are still mans best friend
Filament lightbulbs are still the best electric light source.
I won't either!
And your point is?
I replaced my swimming pool light with a color changing LED bulb. It cost $$$ a few years ago but it should be working long after I’m a dead guy.
Define ‘best’...
I have used the coleman stove in tents north of 60 in winter and been warmer than in a house in Toronto.
I have been looking for a hand pump mantle light like th kind that were used on the farm when I was a child, The gas cannisters that power the mantle lanterns sold in the hardware store are considered hazardous household waste when empty and so have to be taken to the collection station along with old florescent tubes and those funny spiral ones.
I use a mantle light for outdoors and for emergency lighting in the event of a power failure.
My reading chair is next to a WINDOW....granted I live in NY state and the sun isn’t shining all that much in the winter...but you cannot beat natural sunlight pouring into your house. At night I want mood lighting......not a landing zone for a 747. Why do they need to confuse me with all these options?
Best=most perfect compromise of: practicality, reliability, simplicity, economy, efficiency, and most important...what I like best.
There is nothing more simple to troubleshoot than a filament lightbulb. No moving parts. No circuit board. No capacitors or semi conductors or anything. Just a filament in a vacuum. AMAZING!
Whats wrong with the lightbulb ?
Its cheap and it works.
I got one in the garage I’ll sell you.
They certainly have a large installed base...
reliability,
A "good" tungsten lamp lasts thousands of hours, any old LED lasts a hundred times longer. LEDs don't quit when you drop them, and they don't scatter broken glass.
simplicity,
The principles of operation are easy enough to understand.
economy,
As in low cost to buy? On a per unit basis, true, but it takes scores of tungsten light bulbs to provide light for as many years as a single LED lamp.
efficiency,
Only a small fraction of the energy that goes into a light bulb comes out as light, most of it comes out as heat.
and most important...what I like best.
No argument there!
You missed one, Tungsten lamps simply put out more light than an LED lamp. That's a big sales point.
There is nothing more simple to troubleshoot than a filament lightbulb. No moving parts. No circuit board. No capacitors or semi conductors or anything. Just a filament in a vacuum. AMAZING!
I'm not quite sure what good it does you know the filament is burned out. It's not like you can repair a light bulb!
As far as our eyes are concerned, nothing is wrong with lightbulb.
However, the problem is that all artificial light sources produce heat in addition to light. But fluorescent and LED lighting can produce same amount of light as incandescent bulbs but with less energy than incandescent bulbs. This because they don't waste as much energy in the form of heat.
Because GE and Sylvania made large donations to the ‘rats, why else ??
You speak like an eco hippie what with all that conservation, effeciency and worrying about heat.
If we need more energy we build more plants and run more copper dangit.
And figure out a way to make organic diesel from jihadis.
If we need more energy we build more plants and run more copper dangit.
And figure out a way to make organic diesel from jihadis.
Consider that incandescent lighting actually makes cooling systems work harder in the summer.
Yes, incandescents also help to heat a house in winter.
I look forward to LED lighting.
No. No repairing. You just throw away.
I think you don’t get it. When the light goes out(I’m talking about a vehicle not your dam house you nitwit) the first thing you do is check to see if the bulb is burned out. If it is, you throw it away and put a new one in.
If you have those damned LED nightmares, you don’t know what the problem is. It could be a faulty circuit board. It could be faulty wiring. It could be anything. You have to get a meter and start testing for voltage here and there. THen, if it is the LED/circuit board thingy, you have to pray there is someone somewhere with one in stock exactly like yours. There’s no standard LED setup. Every light is unique.
LEDs suck. Filament bulbs are the only way to go.
Ah! OK.
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