I ran into this today and wondered if it had any projector potential.. 7000 lumens.. pretty neat!

http://tesladownunder.com/LEDs.htm#100%20W%20LED

Let me know what you think?

And I have no idea where to post something like this.. please correct me if needed.

here it is on ebay.. a little expensive .. but still cool
http://cgi.ebay.com.au/1-PC-BRIGHTEST-100W...34.c0.m14.l1262

Yeah, I saw that today too. The only problem with it is apparently it can burn holes through things.
Found nothing on at what distance.




Nevermind, he sticks the thing right up next to it. Have it far back enough it'd be fine. So replace your
ballast with a good DC supply (Plenty of 400W ones up on ebay from 12V to 64V) and you're good to
go.

That's very cool. But I wonder how it would work with a DIY projector. The light source looks to be about 25mm x 25mm (from what I could see in the pic, the square module begins at 17mm and ends at 42mm, and I'm assuming it's square), so it's not much different from large arc MH lamps that work just fine with DIY projectors

However price is very high. If all 7000 lumens could be directed toward the triplet, then perhaps it could be worthwile.

Nice find!

http://www.diy-community.de/showthread.php...ed=1#post328504

100wLED + driver + condenser + cooler

total + shipping = $300.

wow thats really great! what does +driver mean? thats not a power supply is it?

yes! driver is power supply, the LED

yes! driver is power supply, the LED need a special power, Constant Current Source. this is a Constant Current Source for 100w LED.
please dont use Switching Power Supply

http://b15.photo.store.qq.com/http_imgload...8d54cd36bc3eb52
http://b18.photo.store.qq.com/http_imgload...3d025c7dff227f4

can anyone see the pics that from the link YWH posted previously...hmm I seem unable to view.

http://img253.imageshack.us/img253/2443/img8275.jpg
http://img253.imageshack.us/img253/8918/img8269.jpg

So here is the question: Is this a "better" light source than the LL standard bulb (T15 Lamp)? Cuz thats what im using now. This sounds to me to be really awesome. Hoping someone can tell me what pros and cons would be over the standard T15 lamp.

thanks

Pro:
You can control light output coordinated with image. (At dark scene reduce light output, bight scene increase it)
Light is mostly directed straight, and collminator lens is cheap to bring all rays into +-6-30 degrees
No heat is directed forward ( the pictures above are from poor removal of heat from lamp and intentionally focusing it on an object. This type of abuse would drastically shorten the life of the LED)
A proper heat removal system would be quiet, no fan required, and increase the LED life to 20,000-50,000 hours
Light output is more focused. No mercury spikes, which account for most of the lumens of MH, but are not desirable. Less LED lumen's at 6.5K is more actual clean "good" output than MH. So you do not need as much lumen's for the same good picture.

Con:
Not as readily packaged as MH. You will need to consider the installation of HS and placement due to small size of LED plus consider a power package of constant current. May need microprocessor or PWM.
May cause spotting of screen due to such direct lighting (suggest 30 degree collminator or proper calculation for application)

Recommendation:
http://mouser.com/Search/ProductDetail.asp...Iqx5Zle5/V4Q%3d

It is cheaper and more effective to spread the light. Or try W724C0. Not as inexpensive, but only 10 are needed for 7000 lumens.

Hi, all
Pls see here
http://www.diyaudio.com/forums/showthread....threadid=146373

I do think, LED+FLYEYES+COLLIMATOR, can make a real high unifomity LED projector

there is a projector using this led source check out here.
http://www.allinbox.com/RotamLedBox1/RotamLedBox1.htm

Link to same page using Google's Web Page Translator.
http://translate.google.com/translate?js=y...sl=es&tl=en

What do you think about this!?

Approx. image - LED positions and triangle angle are configurable to get "one-source" hotspot

I think that when you sit down and do all the math on this the best that you'll get is the equivalent of having 2 LEDs side by side, and you'll have some nasty overlap effects to deal with where the beams of both light sources intersect.

That being said, you could at least get virtual LEDs closer together than would otherwise be possible with high power LED devices, which could be of enough benefit. You'd need to be very careful modelling this to be sure of what you'd get before you build it.

Pfft, model all you want, but reality will find some way to be awkward at the party. Its like a good relationship ... the fun is not in the planning, but the impromptu positions!

Heh. Well, in any case, what's impossible is still impossible. There's a fine line here between what can be done and what cannot be done, and I'd suggest that it would be a better idea to know what is possible with things like this from what isn't possible before you start building.