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Old 05-16-2011, 12:35 AM #17
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Default Re: DLP projectors laser diodes extracted red and green?

You have 600 what? These are red LEDs, not laser diodes, and there is one per projector.


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Old 05-16-2011, 03:17 AM #18
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Default Re: DLP projectors laser diodes extracted red and green?

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Originally Posted by Flaminpyro View Post
Well actully all the spair parts are ending up here for some reason
damn... and i thought i had alot of empty projectors laying around...
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Old 05-16-2011, 03:58 AM #19
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Default Re: DLP projectors laser diodes extracted red and green?

If I can make a suggestion Jeff (and to anyone else with a bunch of these). Hold on to them.

I know people sell them off for $50 all the time on eekbay and elsewhere. But it's only a matter of time before I reliable DIY approach to popping a blue LED back in place of the LDs emerges and makes these worth a bunch more than $50.

When I harvested my measly ONE projector, I had my mind on that very idea. DX has a blue LED emitter plate that is actually roughly the equivalent (when I tried to do the math) in terms of lumen output. It also require roughly the same wattage as all of the LDs combined, and surprisingly at a very similar voltage to each individual set of 6 series LDs in the projector (about 30V if I remember correctly, which is a bit higher, but close to what each series of 6 LDs must be running at). Anyway, I think you could put a blue LED emitter and simple TEC in the location where the knife-edge mirror array is, and remove the LD heatsink to make room for any driver electronics that might be necessary to run the LED/TEC.

I don't have the skills to make that work, but there's a lot of ingenuity on t interwebs, and I'm sure someone is going to put two and two together to realize that $50 projector guts + $50 blue LED emitter + some time and electronics work = $100 for a working projector that must be worth two or three times that in practical reality.
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Old 05-16-2011, 09:23 PM #20
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Default Re: DLP projectors laser diodes extracted red and green?

List a few on ebay under "5W Burning LED" or something...

Some people may want them for experimentation, also another possible application is security lights... 5W of red would be a very effective deterrent and also work brilliantly with some low lux b/w cameras to improve information collecting ability.

-A

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Old 05-19-2011, 07:46 PM #21
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Default Re: DLP projectors laser diodes extracted red and green?

I've bought a few projectors and sold off the laser diodes from them. I took one apart and have played with the red LED and it really is impressive. Honestly though the big advantage of the Phlatlight is that it has a large single surface emitter with a 16*9 aspect ratio which is very useful for projection displays. If you just want lots of light, you are better off buying some of the 10, 20, or more Watt Chinese LEDs you see on ebay. These have multiple chips in a single housing and operate at a more reasonable 1.5A or so with a much higher forward voltage drop so they're easier to drive. Cheaper too, I think I paid $16 for the red and green ones, blues and whites are about half that. Driver boards for either low voltage DC, or mains input have also become ridiculously cheap.

The same basic design is used for 100W LED modules, just search ebay, you'll find them from numerous sellers.
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Old 05-19-2011, 07:59 PM #22
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Default Re: DLP projectors laser diodes extracted red and green?

If anybody is looking to buy a quantity of the Phlatlight LED's I have 10 packs of projectors that are just missing the diode blocks for $185. So that is 10 red Phlatlight LED's for $185 plus all the optics, power supplies, knife edge arrays and other goodies in the projector as a bonus shipped free US. Check the link in my sig.
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Old 05-20-2011, 02:30 AM #23
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Default Re: DLP projectors laser diodes extracted red and green?

lmao i couldnt even sell the harvested projectors i had for 50 bucks.. good luck dtr!
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Old 05-20-2011, 02:36 AM #24
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Default Re: DLP projectors laser diodes extracted red and green?

$185 for 10 projectors works out to $18.50 each, that's actually very reasonable IMO if you can use that many of them.

Has anyone tried replacing the laser diodes with several high powered blue LEDs? I have some 20W LEDs I've thought about sticking in the intact one I have, it wouldn't be as good as the lasers, but I've heard reports that the projector is usable with as few as 6 laser diodes in it. The hard part would be getting all the blue light where you want it, but the projectors don't need coherent light, they just need lots of it.
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Old 05-20-2011, 05:30 AM #25
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Default Re: DLP projectors laser diodes extracted red and green?

Wouldnt Crapio have used LEDs instead of LDs if it worked. LEDs are cheaper, and run cooler. They would have saved millions in production costs.
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Old 05-20-2011, 05:34 AM #26
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Default Re: DLP projectors laser diodes extracted red and green?

Won't get anywhere near the light output, and high output in a compact package with low energy consumption is the claim to fame of those Casios. There is no doubt it would not meet original specs, but it might be a cheap way to get a usable projector out of something that is otherwise scrap. I dunno, I haven't tried, but I did see someone using 6 diodes instead of the original 24 and the picture was still decent if a bit dim.
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Old 05-20-2011, 06:43 AM #27
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Default Re: DLP projectors laser diodes extracted red and green?

I've read many people think the quality of the picture is junk with the original projector. So I'd assume starting with crap, will only end in worst crap.
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Old 05-20-2011, 07:07 AM #28
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Default Re: DLP projectors laser diodes extracted red and green?

Flaminpyro, I will take your pic.
:P
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Old 05-20-2011, 07:15 AM #29
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Default Re: DLP projectors laser diodes extracted red and green?

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I've read many people think the quality of the picture is junk with the original projector. So I'd assume starting with crap, will only end in worst crap.

Dude, WTH is with your attitude? Did somebody pee in your cheerios or something?

The picture is pretty good as a data projector. It was never meant for watching movies, but it's sharp enough to use as a PC monitor. I played with one of mine for a while before harvesting the diodes and it looked about as good as the projectors we use in our conference rooms at work and far smaller and lighter.
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Old 05-20-2011, 07:34 AM #30
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Default Re: DLP projectors laser diodes extracted red and green?

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Dude, WTH is with your attitude? Did somebody pee in your cheerios or something?

The picture is pretty good as a data projector. It was never meant for watching movies, but it's sharp enough to use as a PC monitor. I played with one of mine for a while before harvesting the diodes and it looked about as good as the projectors we use in our conference rooms at work and far smaller and lighter.
There was no attitude.

Go F*CK your dead mother. < Thats attitude. (not directed at you, just an example)

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Old 05-20-2011, 01:36 PM #31
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Default Re: DLP projectors laser diodes extracted red and green?

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Originally Posted by Tech_Junkie View Post
Wouldnt Crapio have used LEDs instead of LDs if it worked. LEDs are cheaper, and run cooler. They would have saved millions in production costs.
The newer models are actually using a blue LED for the blue light and the blue lasers diodes for fluorescing the green phosphor wheel.

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Old 05-20-2011, 01:42 PM #32
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Default Re: DLP projectors laser diodes extracted red and green?

Is it a Phlatlight blue?
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