luminous efficacy

This gives a general idea of how efficient certain types of lamps can be.

lm/W = Lumens/Watt

Enjoy.

EDIT: I'm stupid... using URL tags instead of image. Yeesh.

Wow. That's a nice graph. What exactly are sulphur lights and where are they used in?

I believe that they are referring to the microwave pumped incandescent sulfur lamps. These things are really cool, that is to say hot. The bulb is a golf ball sized sealed quartz sphere with some sulfur powder inside. You then pump a LOT of microwave power into it until the sulphur turns to a gas and the plasma lights up. They generate a LOT of light. Too much for a point light source and generally are placed at either end of a long light pipe. The light color is very good too, perfect for growing plants. The problem is that they are unsuitable for smaller venues. They only come in one light level and that is huge. They are also really noisy because of the high pressure air cooling system to keep it from melting, and cooling the magnetron. The bulb is also kept spinning with a motor so that it heats evenly.

Individual lamps are very very expensive. The savings come in the fact that your whole warehouse might only need 4 of them.

I used to have some links to reports about them around here, but they no longer seem to be in my browser. A google search for sulphur microwave light turns up a lot of reading material. like:

"In this new light bulb, sulfur excited by microwaves emits a bright
white light. At the DOE's headquarters, a sulfur bulb at each end of
one 240-foot-long light pipe replaced 240 individual 175-watt
high-intensity lamps. One Tootsie-Pop-size lamp gives off the same
light as more than 250 standard 100 watt incandescent bulbs."

Pretty cool huh?

James,
Bingo!!

light pipe

I'd like one for the house but it's a bit more $$ than a CFL.

Just wait until Tungsten Lattice lights make their way onto that chart!

Brightnorm

Originally posted by T-Rex:
James,
Bingo!!

light pipe

I'd like one for the house but it's a bit more $$ than a CFL.

Click to expand...

<font size="2" face="Verdana, Arial">the world is realy small...
one of these microwave lamps is installed in the town where i live westerholt.

westerholt is only 2 km from my house.

[/B]"one 240-foot-long light pipe replaced 240 individual 175-watt
high-intensity lamps. One Tootsie-Pop-size lamp gives off the same
light as more than 250 standard 100 watt incandescent bulbs."[/B]

HOLY $#!%!!!!! I've never heard of anything like that before. Brightnorm, please shed some light (hehe...i love it) on the Tungsten Lattice lights too.

Are these lights brighter than street lights? Because those are problably the strongest lights i know of right now, apart from HID. Amazing stuff i tell ya!

Originally posted by artar:
the world is realy small...
one of these microwave lamps is installed in the town where i live westerholt.

westerholt is only 2 km from my house.

Click to expand...

<font size="2" face="Verdana, Arial">Can you "borrow" the light drive unit and ship it to the US?

EDIT: Darn brain just turned on. Wrong voltage.

Originally posted by LEDagent:
...HOLY $#!%!!!!! I've never heard of anything like that before. Brightnorm, please shed some light (hehe...i love it) on the Tungsten Lattice lights too.....

Click to expand...

<font size="2" face="Verdana, Arial">TUNGSTEN LATTICE LIGHTS

Brightnorm