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Old 08-28-2008, 01:49 PM #1
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Default Will this red work in projector?

Will this marginal beam quality work in a RGB projector? :-/
Will be using DAC and scanners with 40 PPS. Would a better beam quality for the red make any difference in this projector? Would TEM00 be better or no difference in animations and colors?

Thanks, Docjohn

http://cgi.ebay.com/500mw-650nm-red-...QQcmdZViewItem


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Old 08-28-2008, 01:54 PM #2
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Default Re: Will this red work in projector?

I think the laser should be ok, I think that 635nm is better for RGB than 650nm though.
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Old 08-28-2008, 01:56 PM #3
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Default Re: Will this red work in projector?

Hmm, I'd suggest you go with this from Dragon: http://www.dragonlasers.com/catalog/...W-p-16328.html

Pretty much the same stats, but cheaper and you get the comfort of working with a proper laser company, not just some random eBay seller. Plus you could email Dragon and have them set the unit up just right for you, ie; with the right modulation, power cables, etc.

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Old 08-28-2008, 02:10 PM #4
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Default Re: Will this red work in projector?

honestly a 635 is a better choice for a RGB projector its a brighter more visible red and you dont need as power to get it to match with 532 green.

but one downside is a 400mw 635 cost a little more than a 800mw 650


but i do think i will choose to go with the 635 with my projector
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Old 08-28-2008, 02:16 PM #5
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Default Re: Will this red work in projector?

Hmm, how much would a 100mW 635nm analogue cost? I'm thinking of sticking one of those to replace the 100mW 650nm in my RGY. I wouldn't need any more than 100mW 635nm to balance 150mW of 405nm.
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Old 08-28-2008, 02:34 PM #6
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Default Re: Will this red work in projector?

i can sell you a laser wave 100mw 635nm for 450.... possibly a little cheaper i would have to double check with bridge

but i could get you a 300mw 650nm for 255
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Old 08-28-2008, 02:40 PM #7
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Default Re: Will this red work in projector?

Quote:
Originally Posted by thesk8nmidget
honestly a 635 is a better choice for a RGB projector its a brighter more visible red and you dont need as power to get it to match with 532 green.

but one downside is a 400mw 635 cost a little more than a 800mw 650


but i do think i will choose to go with the 635 with my projector
Correct.

I think someone posted a topic over in the multimedia forum comparing 635 and 650nm. The 635 was a lot brighter.
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Old 08-28-2008, 02:51 PM #8
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Default Re: Will this red work in projector?

But there comes a time when even though 635 is brighter, 650 is just so much cheaper that it becomes more economical.

How much 650 do you need to match 635?
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Old 08-28-2008, 04:00 PM #9
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Default Re: Will this red work in projector?

im willing to bet money you dont get 500mw out of it but it should work fine
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Old 08-29-2008, 07:33 AM #10
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Default Re: Will this red work in projector?

Murudai, since i'm a Aussie laser-wave dealer I could see what I could do you on a 635nm
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Old 08-29-2008, 07:39 AM #11
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Default Re: Will this red work in projector?

I could do a 100mw 635nm for about $436 + shipping, or 650nm @ 250mw for about $280 + shipping.

Both come with a PSU, and a TTL/Analog driver control board.
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Old 08-29-2008, 07:50 AM #12
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Default Re: Will this red work in projector?

Is that AUD or USD?

Overall, I'm just looking at the brightest red possible. So which is brighter, 100mW of 635 or 250mW of 650? What about beam specs, what's the beam specs of the two units?
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Old 08-29-2008, 11:39 AM #13
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Default Re: Will this red work in projector?

a 650nm laser with a very tight beam will look just as bright as a 635nm laser with a fat beam.

a tight beam is much easier to work with than a fat beam.
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Old 08-29-2008, 11:55 AM #14
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Default Re: Will this red work in projector?

Quote:
Originally Posted by andy_con
a 650nm laser with a very tight beam will look just as bright as a 635nm laser with a fat beam.

a tight beam is much easier to work with than a fat beam.

* * * * * Excellent point Andy. Divergence is very important when talking about preceived brightness to the human eye. Total power isn't everything.

* * * * * * *
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Old 08-29-2008, 12:15 PM #15
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Default Re: Will this red work in projector?

Yeah, that's why I'm asking about the beam specs. I know some diode labbies are high powered but the beam specs are so bad that it isn't very useful.

That's one nice thing about DPSS 671nm red, they have awesome beam specs. Though, they are really dull...
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Old 08-30-2008, 02:35 AM #16
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Default Re: Will this red work in projector?

That is AU

I do not make a cent from that, i'm up for helping people out
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