Treehugger - Latest Comments in Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Omega — Mon, 23 Mar 2015 16:10:10 -0000

It's absolutely true that the plasma is at around 6000 degrees, but you have to take into account the low density of the plasma as well. At low densities thermal conductivity is suppressed, which is what prevents the bulb from being destroyed. At high temperatures you will get other effects like sputtering (erosion of the glass wall) but these temperatures are not high enough for that to be a significant problem.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Jay Cie — Sat, 17 Nov 2012 23:26:23 -0000

When this article was published it was inaccurate. Today it's even more so.

LEDs back in 2008 were far better then 70l/w. Today they break 200l/w.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

123 — Mon, 14 Mar 2011 21:26:51 -0000

A properly cooled LED will retain 90% of its original output for 60,000 hours.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Concerned — Fri, 19 Nov 2010 13:44:05 -0000

Wow! What a great "new" technology! However ---

1) Be advised that wireless RF-induced plasma lighting has been around since 1971 and has been used by semiconductor industries for decades. http://www.fusionuv.com/

2) LEDs produce unidirectional monolithic monochromatic light. It is the least desirable and ineffective form of lighting known to man. LEDs don't burn out, but their luminosity degrades to half in less than an incandescent bulb's lifetime. A true white light LED is physically impossible to build, given white light requires full spectrum as opposed to single narrow bandwidth light.

3) LED and CFL manufacturing demand extensive use of toxic chemicals, abhorrent amounts of water and unending energy. They contaminate landfills and make it difficult to resell properties home to such manufacturing sites.

Please, wake up people! You are being hoodwinked by technology junk!

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Maryt1138 — Thu, 12 Aug 2010 13:19:11 -0000

You may be interested in the article I wrote about this subject. I’ll put the link if you want to check it out:

http://www.squidoo.com/luxi...

Thanks,
Matie

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Doom — Sat, 20 Feb 2010 20:10:30 -0000

I don't understand how something with plasma in it doesn't melt everything it's attached to...

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

matrixfbi — Sun, 14 Feb 2010 11:34:10 -0000

Buenas tardes, me gustaria obtener mas informacion sobre las lamparas de plasma.asi como donde podria conseguirlas. escribo desde españa y tengo una empresa con la cual me gustaria comercializar este tipo de lamparas.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Yep — Fri, 12 Feb 2010 15:36:25 -0000

A watt it a watt is a watt. It is a measurement of how much heat is generated. P = I squared x R. Lumens is a measure of light intensity. So, the efficiency is 140 lumens of light intensity for every watt of power generated.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

alfred — Thu, 07 Jan 2010 01:53:42 -0000

Actually, John is right. The device emits light by heating a black body emitter (plasma) to 6000K. This is the same principle used in arc lamps used in large spotlights and of course the sun. The plasma is contained by localised heating - once the argon atoms leave the focus they cool very rapidly (T^4). Because the light source is nearly a blackbody emitter, it has a colour temperature the same as its temperature - 6000K.

An incandescent light has a filament temperature of 3000K, but people don't get scared by that...

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Dave Hanna — Wed, 30 Dec 2009 10:40:12 -0000

Sounds like a great replacement for current metal halide lamps at ball fields

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

tiffnay jewellery — Sat, 07 Nov 2009 01:27:07 -0000

At least these plasma bulbs last around the same period as some incandescent, so they can be replaced every couple years, so more money to be made

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

griffin holbert — Fri, 28 Aug 2009 02:01:23 -0000

"Until it can be screwed into a normal lightbulb socket, it's not going to be of much use to the average person. Why can't LED manufacturers figure out that we want a normal lightbulb?"

"hopefully it wont give me a sunburn trying to read my books at night "

An easy solution to both of these problems would be to make a cheap non-clear covering for the bulb that will act as an adapter...

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

steveB — Sat, 04 Jul 2009 10:52:50 -0000

OK about the heat thing.

What has more heat? A bathtub full of lukewarm water or a lit match?

The bathtub has more heat at a low temp and the match has more temp but less heat.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Dr Zoo — Wed, 17 Jun 2009 21:29:28 -0000

So a couple of the points are valid some of the comments you really need to do your research before engaging brain to fingers!

For example 6000k as per John's comment is the colour temperature.

I am suprised that there are individuals who believed it was the temperature of the surface of the bulb 6000K HA HA HA HA HA!!

Most VHO's T5s BLue end are 6000 - 10000K nothing new there.

I imagine that its these individuals who believe that change and hope are for tree huggers!!!

What I find very cheeky by Luxim is that Plasma bulbs have been around for eons.... mind the pun....this is not new technology...

Philips already has this technology out there!!!

Additionally UHB 20w LED's are miles ahead, runs near to cold same color temp 6000 - 8000k and lasts for 100K hours.

Europe is already replacing most of its street lights with new 2 UHB LED systems that give equiv to the old 400w sodium Incads.

As for the comment regarding LED wont take hold because of their life span is to long and there is no money in it.....

If I could put this statement up I would "You really need to get your heads tested, its mass consumerization and capitalist comments like that that has got the planet in the state its in."

"Time for the Capitalist to die off and allow room for the Cultural Creatives and Techno Savs to take over...."

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

ATR Lighting — Thu, 30 Apr 2009 11:40:48 -0000

The future of lighting perhaps. It all comes down to cost in the long run. I wonder what kind of disposal issues this poses. Toxic waste and all that.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

tek — Mon, 30 Mar 2009 17:18:32 -0000

Actually, when used in an application where lumen intensity is important(growing/distance lighting/etc), even new powerful LED's burn out FAST.

You can buy a $75 1000w HPS bulb once a year, or you can buy a$600 LED array or pay $450 to replace every since led in the array every two to four years. not only that but the light is diffuse and does not travel past obstructions well.

They will work for 18 years maybe, but they will loose 60% of their light intensity within the first couple years.

This, along with poor penetration is why LED lighting is still just slightly more than useless when applied to tasks such as growing plants commercially.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Anonymous — Tue, 03 Feb 2009 16:01:11 -0000

How about you link to some of the "many LEDs on the market which exceed 140 lumens per watt"? thx

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Jimmy D — Tue, 03 Feb 2009 15:50:32 -0000

This "article" is full of mis-information. There are many LEDs on the market which exceed 140 lumens per watt...contrary to the claim that the best are "70 lumens per watt" , not to mention that a typical LED bulb lasts 3x as long.

I just hate seeing lies being used to try and sell product.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Ron — Sun, 16 Nov 2008 13:35:52 -0000

@John,

Yes why are there idiots speaking about things they don't understand?

He said something like "6000K is the same temperature as the surface of sun, which is why the spectrum looks similar to the sun arriving on earth."

It is pretty clear that he is talking about color temperature and not heat energy since he is referring to spectrum. Also, as pointed out, people in the lighting industry only use the Kelvin measurement for color temp, and they use either F or C when referring to heat.

If you still don't believe us, think about this:

If that bulb was really 6000 degrees Kelvin, that equals 10340 degree Fahrenheit! He would not be able to touch that light shield let alone be able to be that close to the lamp without getting burned.

Maybe next time you want to call someone an idiot, you should do a bit more research first.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

John — Fri, 31 Oct 2008 08:15:39 -0000

Why are there so many idiots on here? 6000k is the actual temperature of the plasma inside the small bulb. Is is not the color temperature. If you watch the video he is extremely clear that the plasma reaches that temperature.

It is like many of the other posters explained...is is the very small mass of the plasma that makes it safe.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Trevor Loughlin — Fri, 03 Oct 2008 08:32:56 -0000

Since the UK government is creating new build slums at such a high density that the only view is the brick walls of other houses rather than natural sunlight, I intend to build a holographic window with a false sun using an array of these lamps, which (with a bit of warm filtering) are the same as the real thing due to their continuous spectrum-no other lamp could do this.

I think there could be quite a market for it.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Justin Thynne — Sun, 21 Sep 2008 14:19:42 -0000

The manufacrurers blurb suggests that it is more efficient than an LED, but are they ignoring the (in)efficiency of the RF generater? This innefficiency could very well make it much LESS efficient than anything LED based. Also, the RF generator is likely to be rather complex when compared to the relatively simple electronics for driving LED's, so how reliable would it actually be?

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Eduardo Ferreyra — Sun, 07 Sep 2008 17:49:55 -0000

Before this promising technology should be approved for general public use, there are some health problems that must be investigated.

Several studies have shown that malignant melanomas occur more often in people working indoors in environments with fluorescent lights than farmers working outdoors. Please don’t confuse melanomas (not caused by UV-B, with squamous or basal cell tumors. It seems that wavelengths in the range below UV-B (320 nm) but above short IR (about 600 nm) have more effect on melanomas.

The feasibility of this kinds of bulbs will depend then on mere economic reasons, and I don’t see they will become popular until the health problems are cleared and the price goes down to reasonable levels. Besides their use in very specific use as flashlights, car headlights, and other highly specialized uses, I don’t see much future for general public use. It’s a pitty, of course.

BTW, as global warming as become now “global cooling” (and will last for several decades) there is no use in pushing this technology in order of “saving the planet”. A generalized use of these bulbs won’t make a dent in temperatures –only if they are hot enough as to heat up the Earth, something we will be trying to do in the near future.

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Warren — Sat, 06 Sep 2008 11:48:10 -0000

Temperature (as in hot, not color temperature) is not the same as the amount of heat. The smaller an area that the heat is contained, the higher the temperature. That's why high power led's need a heat sink, the small amount of heat is all concentrated in a very small spot.

The eventual commercialization of these can benefit from other developments. In particular the packaging of necessary electronic circuits with the light source has already been accomplished for compact flourescent bulbs.

The research into materials that took led's from red to multi colored and then white probably covers many principals involved in this device. (It would be interesting if led research led to replacing the led with this and other light sources).

Re: Luxim Plasma Light Bulb Kicks Some Serious LED Butt

Alan — Sun, 17 Aug 2008 23:26:02 -0000

Lumens does not equal the full story. Luminance and Luminious Intensity are huge factors, much bigger then Lumens/W.

Here's a test between a 13 watt 800 lumen cree, and a 60 watt incandescent:

60 watt incan:

http://img241.imageshack.us...

13 watt cree:

http://img241.imageshack.us...

The 13 watt cree has the SAME lumens/W as a 13 watt cfl (Which supposedly is a 60 watt incandescent equilvent), yet produces light equal to a 120 watt incandescent.

The light is a limited bulb type, 60 degrees, which is why the light doesn't travel far. But the intensity of the light, and the output, far outweigh the lumens.

This is a 60 lumen/W bulb. If a 150 lumen/W cree has the same intensity, and a better viewing angle, a 13 bulb would be equivelant to a 300 watt incandescent.