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LEDs Are Set to Take Over Lighting

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elctrnx_lyf
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Re: 3%??
elctrnx_lyf   12/8/2010 2:23:22 PM
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At this time I do not see 5% of the house hold using the LED lighting. But the LED"s are predominently used in the Backlighting for LCD displays and in the traffic signals for long time. But with the inbuilt advantages of lower power consumtion and higher life time LED"s will be seen in many more places in the future. One obvious big market for the LED wil be in the area of lighting appliances.

Scott Raynovich
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Re: 3%??
Scott Raynovich   12/8/2010 12:48:16 PM
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Regarding the 3-5% market share, take a look around your house. Look at every lighting device in your home. Chances are you will see mostly incandecent, fluorescent, and halogen lighting. Does it look like more than 5% of your house lighting is LED?

t.alex
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Re: LEDs are set
t.alex   12/7/2010 7:19:58 AM
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I personally would like to convert all the bulbs in my house to LEDs. But there is the instinct that probably i should wait a bit more until the price drops :-)

 

Toms
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Re: LEDs are set
Toms   12/7/2010 12:56:55 AM
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Thanks Scott,
    The markets for LED products are very vast. Since not much similar products in market, we can expect a mass growth rate also. For a last couple of years many research and innovation has happened for the LED, both in product and application side. But due to recession and industrial slow down nothing came out in a fruitful way. Now the markets are coming up and the production line is also aligning with the requirement. Recently I had read an article that, electric and electronic giant Philips have a plan to invest a huge amount for LED innovation.  Few months back I had seen some emergency lamp and spotted lamping system from Philips with Led as main light source. By following this some of other companies like TI, Wipro, and Bajaj have also similar plans. LG, Sony and Samsung had gone a little bit ahead with Led TV and projectors. 

     Apart from the home lighting system, we can expect the application of LED lighting sources in other key areas like street lights, automobile lighting system, LED computer screen, Movie projectors, telescopic search lights etc.

     Scott, am not able to point out a particular data source because data’s are compiled from different article and magazines, which I had read earlier, with my own interpretations.

Hardcore
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Re: LEDs are set
Hardcore   12/6/2010 7:40:02 PM
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"My wife is an Artist and her first comments were about how blue shifted and cold the

LED lighting was and how she could not live with the color change."

 

It is an issue that  is inherent in the led design and manufacturing process,  specifically the doping of the semiconductor and the overlay of the organic dye layer.

LED's by their very nature, generally produce a tight band around a particular colour  frequency, and as such it is  currently not possible to get a 'warm' colored LED, the ones that are 'warm' have 3 chips mixed  to produce  the RGB.

However since the 'chips' are not identical and the technology for the dies differs, they  tend to look a bit odd in the colour output, you 'feel' something is not right with the light output because they rely on fooling the receptors in your eyes to colour mix.

Potentially the solution for 'warm' led's would require a single die, with some sort of  dye layer capable of  absorbing and re-emitting the light at a difference frequencies, so that the whole visible light spectrum is covered, but then planck's law dictates this behavior and the amount of energy required into the single die may be too excessive.(even if they could crack generation of such a dye)

This is why everybody seems to be trying to  research multi die colour mixing and control IC's to manage this complex behavior, so to a greater extent it is technology that is currently limiting the uptake of LED lighting.

We will crack it eventually or even come up with a solution in a totally new direction.

Tvotapka
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Re: LEDs are set
Tvotapka   12/6/2010 4:32:14 PM
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Good comments on LED technology. Longevity is an advantage to be sure provided the product the diode is used in performs beyond specifications too. For example, my 13 year old neighbor has fried a dozen cell phones and two Ipods in just 3 years. My old Coleco Electronic Quarterback football game (purchased circa 1977) is still going strong as if it were shipped just the other day with every LED on the board glowing just fine and I'm not giving it up!

Scott Raynovich
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Re: LEDs are set
Scott Raynovich   12/6/2010 4:24:32 PM
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Thanks Toms,

Any idea how big this market can get? Where do you get your market research...

--Scott

DBertke
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Re: LEDs are set
DBertke   12/6/2010 3:53:51 PM
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Even though LEDs are technically superior to other lighting in a large number of uses, My wife is an Artist and her first comments were about how blue shifted and cold the LED lighting was and how she could not live with the color change.  As a long time photographer, I also understand the need for true color.  So if LED's are going to penetrate the market and replace current lighting, the manufacurers must set them up to reproduce a true color spectrum.  There are just too many visual reasons why people will want the warm soft white light they grew up with.  Plus the green cast from Flouresent bulbs have made artists and photographers very unhappy in the past.  To succeed, LEDs must be visually better, not just brighter, more energy efficient and long lasting.

Toms
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Re: LEDs are set
Toms   12/6/2010 3:34:51 AM
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    Scott, you are very much right. There are lots of researches happening in the same area.  Sometimes back, the application of LED in electronic appliance is very less and used only to indicate either the power is ON or OFF mode.  After that, some of the electronic and electrical appliance manufacturing companies stated research more about the characteristics of LED Bulb. As a result of the innovation, they had found some good advantages for Led when compare with CFL or other bulbs
a.   LED bulbs are more energy efficient.
b.   Life spans of Led bulbs are 10-25 times longer.
c.   Energy wastage (Heat) is very less.


    For lighting purpose, the LED bulbs are associated with a small circuit having chips and hence little bit costlier, when compare with CFL or other bulbs. I hope this pricing will come down to an extent, when massive production happens.


    Now the technology had grown much and some of the companies are offering LED TV and projector too. When we are looking for green and energy saving mechanism, Led can contribute a lot and hope the technology can drive for that.

t.alex
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Re: LEDs are set
t.alex   12/4/2010 2:53:07 AM
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I wonder if LEDs can creep and dominate in other fields such as automotive or industrial applications?

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