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lys3rg0
Heavy Crude
Joined: Aug 15, 2006
Posts: 282
Location: 'bout 15 miles from EU's eastern border (thankfully on the inside)
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vision-master
Fusion
Joined: May 18, 2006
Posts: 4751
Location: Minneapolis, MN
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 Posted: Sat Apr 05, 2008 7:15 pm Post subject: Re: Luxim claims 140 lumens per watt in new plasma lightbulb |
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I like it.  |
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steam_cannon
Expert
Joined: Dec 28, 2006
Posts: 2558
Location: MA
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| Posted: Sat Apr 05, 2008 8:32 pm Post subject: Re: Luxim claims 140 lumens per watt in new plasma lightbulb |
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Luxim's plasma lightbulb (140 Lumens per watt!)
Looks pretty good, twice as bright as LED!
Also they made an interesting comment that there are no electrodes.
They say it's argon, I'd guess there might be some mercury vapor in
there too and the gas is excited by either microwave or induction.
Anyway, the lack of electrodes is what makes it possible to reach much
higher temperatures (they say 6000 Kelvin), without any electrodes to erode.
Nice find lys3rg0! |
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FireJack
Heavy Crude
Joined: Mar 16, 2005
Posts: 456
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| Posted: Sat Apr 05, 2008 8:50 pm Post subject: Re: Luxim claims 140 lumens per watt in new plasma lightbulb |
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| Well its works but its not just how much light it can produce. Now comes the gauntlet of durability, manufacturing, cost, safety etc. |
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Homesteader
Light Sweet Crude
Joined: Apr 12, 2007
Posts: 1185
Location: Central NC
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| Posted: Sat Apr 05, 2008 9:02 pm Post subject: Re: Luxim claims 140 lumens per watt in new plasma lightbulb |
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Are the resources available in sufficient quantity for the mass market?
I did a few google searches but couldn't find any info. Thinking REEs specifically since so many of our hi-tech gadgets need them. |
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steam_cannon
Expert
Joined: Dec 28, 2006
Posts: 2558
Location: MA
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| Posted: Sun Apr 06, 2008 12:10 am Post subject: Re: Luxim claims 140 lumens per watt in new plasma lightbulb |
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| Homesteader wrote: | | Are the resources available in sufficient quantity for the mass market? |
Judging how I believe this product probably works, I really don't see
any exotic materials needed that would limit production. |
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tsakach
Heavy Crude
Joined: Mar 09, 2005
Posts: 326
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| Posted: Sun Apr 06, 2008 4:07 am Post subject: Re: Luxim claims 140 lumens per watt in new plasma lightbulb |
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The device appears to be an electrode-less halogen bulb driven by resonating microwave energy.
According to Luxim's US Patent 7,348,732, the device operates by maintaining a resonating microwave frequency between 0.5 to 30 GHz inside a solid-state waveguide. The bulb functions as part of the waveguide and contains noble gas and metal halides.
The only drawback seems to be the complexity of the electronics and bulb that functions as part of the waveguide. In comparison, just one stage of the design, such as the voltage source for the microwave transmitter may be as complex as the entire electronics for a compact fluorescent bulb.
So it might be well suited for applications such as streetlights or stadium lighting where premiums are paid for high reliability and efficiency. |
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steam_cannon
Expert
Joined: Dec 28, 2006
Posts: 2558
Location: MA
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| Posted: Sun Apr 06, 2008 9:01 am Post subject: Re: Luxim claims 140 lumens per watt in new plasma lightbulb |
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| tsakach wrote: | The device appears to be an electrode-less halogen bulb driven by
resonating microwave energy.
According to Luxim's US Patent 7,348,732, the device operates by
maintaining a resonating microwave frequency between 0.5 to 30 GHz
inside a solid-state waveguide. The bulb functions as part of the
waveguide and contains noble gas and metal halides.
The only drawback seems to be the complexity of the electronics
and bulb that functions as part of the waveguide. In comparison,
just one stage of the design, such as the voltage source for the
microwave transmitter may be as complex as the entire electronics
for a compact fluorescent bulb.
So it might be well suited for applications such as streetlights or
stadium lighting where premiums are paid for high reliability and
efficiency. |
Thanks for the patent link! So it works kind of how I guessed, cool. 
By the way, if anyone wants to know how to build one of these like
for a science fair:
Microwave Plasma 2 (energized candle plasma in a bowl)
http://www.youtube.com/watch?v=A7RFyh5ABcQ
Microwave Grape Plasma
http://www.youtube.com/watch?v=vb6WCkC0K1I
http://barnesos.net/homepage/lpl/grapeplasma/
Considering that people have been doing this at home in their
microwaves, it's not to surprising that someone came up with the
idea of a light source based on this. Very cool stuff! |
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