LEDs!

[maxa beam]

I'm working on a 100-LED superpanel, but I don't want conventional stuffs. I hear Crees pull like 82 lumens each, so I figure a hundred of them with Total Internal Reflecters would be ungodly bright and fairly inexpensive.

Only problem, I live no-where near a Cree shop. So, is there anywhere to buy 'em online?

Oh, and does anyone know of any LED-sized Total Internal Reflector manufacturers?

 

[Marduke]

I'm working on a 100-LED superpanel, but I don't want conventional stuffs. I hear Crees pull like 82 lumens each, so I figure a hundred of them with Total Internal Reflecters would be ungodly bright and fairly inexpensive.

Only problem, I live no-where near a Cree shop. So, is there anywhere to buy 'em online?

Oh, and does anyone know of any LED-sized Total Internal Reflector manufacturers?

Crees pull 82 lumens each?? :thinking:

A Cree XR-E can run from a small fraction of one lumen, to over 200 lumens, depending on the current you give it.

Cree shop?? :thinking:

CPF'ers buy bare emitters and emitters on stars online at various dealers.

 

[maxa beam]

200 lumens? Woah. So that'd be a 20 thousand lumen panel?

 

[Marduke]

200 lumens? Woah. So that'd be a 20 thousand lumen panel?

And require around 100 amps to operate. Good luck finding an outlet to plug that thing into.

 

[maxa beam]

Hmm, perhaps I should invest in nuclear batteries. Eh, I'll scrap the idea. I'll go back to my four-lamp HID design thankyew. I want to dethrone that Maxablaster of RA's.

(Ha, like that'll actually happen.)

 

[jzmtl]

And at $6~10 a pop, you are looking at a grand worth of emitters.

 

[Lighthouse one]

Data already built the basic idea of your request...72 Cree's running 1.8 amps overdrive with lenses. Called the databank. Shines 1/2 a mile...easy!!

 

[LukeA]

And require around 100 amps to operate. Good luck finding an outlet to plug that thing into.

@4V, for 400W.

 

[LukeA]

And at $6~10 a pop, you are looking at a grand worth of emitters.

In bulk, P4s are much less expensive than that. From DX, IIRC you can get them for under $4 apiece.

 

[maxa beam]

The problem is, LED's aren't made for throw, and that's what I'm trying to make, a throw monster. As I said, I'll try a multi-lamp HID design with a Total Internal Reflecter (Gonna be insanely expensive.) And UV filters.

 

[LukeA]

The problem is, LED's aren't made for throw, and that's what I'm trying to make, a throw monster. As I said, I'll try a multi-lamp HID design with a Total Internal Reflecter (Gonna be insanely expensive.) And UV filters.

TIR lenses for Crees can be had for $1 apiece. LEDs don't put out that much UV.

 

[Marduke]

Mega throw eh? Could try picking up one of these on ebay:
http://candlepowerforums.com/vb/showthread.php?t=92396

 

[maxa beam]

Looking for something more handheld-ish. Heard of that, though. Super beam, looks like a laser, but like 4 feet across.

If you wanna talk about heavy hitters, look at this baby.
http://www.carlislefinch.com/marine/xenon3.htm

150 million candlepower, and 2.5 kW.

 

[maxa beam]

TIR lenses for Crees can be had for $1 apiece. LEDs don't put out that much UV.

No, I meant for the HID idea. A TIR lens that large would be fairly astronomical.

LED's don't throw too well anyhow. Best left in the pocket.

 

[Marduke]

LED's don't throw too well anyhow. Best left in the pocket.

You have much to learn.....
http://www.candlepowerforums.com/vb/showthread.php?t=183261

 

[KeyGrip]

LED's don't throw too well anyhow. Best left in the pocket.

They can if the light is designed properly. The Tiablo A8/9 and Dereelight DBS are examples of stock lights. An LED with a properly focused aspheric lense can get over 80,000 lux.

 

[lctorana]

200 lumens? Woah. So that'd be a 20 thousand lumen panel?

Yes.

The equivalent light output of four, 300W GLS incans.

But all in one direction.

It would look like a football field light tower array.

 

[maxa beam]

Yes.

The equivalent light output of five, 500W GLS incans.

But all in one direction.

It would look like a football field light tower array.

That WOULD be quite impressive, and that thread's convinced me.

It's withing my budget, and I have the time. I just really need the materials, and dispite help, I still cannot find 100 Cree LEDs. (The new-gen sort, with the 200 lumens someone mentioned.)
I need the lenses, too. Where did you see these TIR lenses for LEDs for a buck?

 

[Crenshaw]

I would really like a databank 70, that thing looks soooo cool...

Crenshaw

 

[maxa beam]

I saw the databank, but more LEDs with TIRs(Means that 100% of the light is turned into pure power) instead of reflectors (25% of the power is lost!) it'd probably be quite alot better.

And I have a few tricks up my sleeve for perfect collimation, which will be the key here. I used to work with lasers designed for gun sights. (Have to be absolutely PERFECTLY collimated.)