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Old 04-12-2011, 09:43 PM #1
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Question DLP projectors laser diodes extracted red and green?

My question is where are the red and green diodes going from the harvested DLP projectors.
Are they going to waste or can they be used for light sources like flashlights, wall washes and such.


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Old 04-12-2011, 09:47 PM #2
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Default Re: DLP projectors laser diodes extracted red and green?

There are no red and green diodes...well, there's a red diode, but it's a light emitting diode and not a laser diode. It's a Luminus PT-54 red projection LED and the green is created by a spinning phosphor disk that is fluoresced by the 445 diodes. The red LED requires like 8A and serious cooling. In the projector they're on a TEC/heatsink array with a fan behind the heatsink that moves a huge amount of air.
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Old 04-12-2011, 09:50 PM #3
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Default Re: DLP projectors laser diodes extracted red and green?

Yep who needs them stinking red and green laser diodes I just throw mine in the trash
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Old 04-12-2011, 11:34 PM #4
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Default Re: DLP projectors laser diodes extracted red and green?

Thanks guys for the replies.
Just wondered where the extra parts where going. Looking to put a 445nm diode into my "Frankensink" labby laser to use in my laser light show.
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Old 04-12-2011, 11:53 PM #5
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Default Re: DLP projectors laser diodes extracted red and green?

Well actully all the spair parts are ending up here for some reason


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Originally Posted by COMMANDR View Post
Thanks guys for the replies.
Just wondered where the extra parts where going. Looking to put a 445nm diode into my "Frankensink" labby laser to use in my laser light show.
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Old 04-12-2011, 11:57 PM #6
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Default Re: DLP projectors laser diodes extracted red and green?

Do you have any of those red LED's? They would make a nice red light sources.
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Old 04-13-2011, 12:11 AM #7
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Default Re: DLP projectors laser diodes extracted red and green?

OMG!!! Look at all the 445nm diode donors. I count 28 DLP projectors, that adds up to a s##t load of laser diodes.
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Old 04-13-2011, 12:15 AM #8
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Default Re: DLP projectors laser diodes extracted red and green?

Quote:
Originally Posted by Flaminpyro View Post
Well actully all the spair parts are ending up here for some reason

Quit parting out all those LD's and just make one super laser already
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Old 04-13-2011, 12:21 AM #9
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Default Re: DLP projectors laser diodes extracted red and green?

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Well actully all the spair parts are ending up here for some reason
My god where did you get all those.
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Old 04-13-2011, 12:55 AM #10
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Default Re: DLP projectors laser diodes extracted red and green?

28 projectors
x
24 diode each
x
1.5W

....If you powered up all of those diodes to 1.5W, you'd have almost exactly 1 kW of power. Wow.
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Old 04-13-2011, 12:58 AM #11
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Default Re: DLP projectors laser diodes extracted red and green?

My question is - why are they using laser diodes at all, given:
http://www.luminus.com/stuff/content...heet_rev07.pdf
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Old 04-13-2011, 01:24 AM #12
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Default Re: DLP projectors laser diodes extracted red and green?

when were the green and blue LED's created?

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Old 04-13-2011, 02:47 AM #13
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Default Re: DLP projectors laser diodes extracted red and green?

Quote:
Originally Posted by Flaminpyro View Post
Yep who needs them stinking red and green laser diodes I just throw mine in the trash
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I think you could increase your cash inflow from the DLP projectors!!! Think about!!!
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Old 04-13-2011, 09:53 AM #14
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Default Re: DLP projectors laser diodes extracted red and green?

Yes theyve thought about it.

Problem is, they require a a power supply thats expensive to buy "off the shelf" and they require serious cooling and optics, simply not worth it. Thier good for us tech's to fiddle around with, but thats it.
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Old 04-13-2011, 10:30 AM #15
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Default Re: DLP projectors laser diodes extracted red and green?

A car battery runs them just fine and I was using a motorcycle battery when I made this rig and I did this last year befor we even had the PT54's around, these are CBT-120 diodes and can handle 18 amps cont. check this out> Check out these 18 amp diodes



QUOTE=ped;889304]Yes theyve thought about it.

Problem is, they require a a power supply thats expensive to buy "off the shelf" and they require serious cooling and optics, simply not worth it. Thier good for us tech's to fiddle around with, but thats it.[/QUOTE]
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Old 05-08-2011, 10:27 AM #16
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Default Re: DLP projectors laser diodes extracted red and green?

Heh, this would be a ridiculously powerful torch if someone could make one handheld.

Even if the diode was run at 10% of its rated current that would still be brighter than a Maglite.

People who have a lot of these projectors should really think about selling the red emitters, as I'm sure a multi-Watt red LED would have its uses.

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