400mw 640 vs 1W 650?

[norty303]

Hmm, this is not easy, and not helped by the fact the laserwaves are at my price point but don't have the higher power ones available yet.

Here's about the only vid I've got of my current projector, 400mw 532, 1.1w 650, sorry most of the action is in the last minute, and it was shot whilst the moaning DJ who didn't like smoke was on...

http://www.youtube.com/watch?v=d9lBOrTQjeM

I'm not sure that 350mw of 640 is going to be up to the job.

HEEEELP!

[Kiwi Tinker]

Heya Man

I know this is'nt exectly what your after but here's a vid of 2 projectors, one with a 1W 650 and the other a 0.35W 635. Both are CNI modules.

http://www.youtube.com/user/Dannyvir.../2/3wElKTv7_xo

cheers

robert

[tocket]

I can tell you that the 300 mW of 642 nm I have in my projector is actually overpowering my 400 mW green laserwave. That is not so much because the greatness of the 642, but rather how poor the 532 is (at modulation).

Never trust pictures for color balance. Cameras simply don't have the same color response as our eyes. You have to go by the experience of other people.

I would choose the laser with the highest luminance for the beam specs you require. Keep in mind that 650 nm lasers can be a fair bit off the 650 mark and that the luminous efficiency drops quickly in this region. Ask for an emission spectrum for these lasers. If they can't provide that, don't buy their lasers.

[gottaluvlasers]

Adam-

I have personally seen 1.5W of 650 next to 500/640 and i could *not* tell the difference other than the fact of the "fatness" of the 650.

1W/650 next to 400/640 is going to be damn near identical. in fact, i think the 400/640 will look brighter. the 640's are beautiful beautiful lasers. you get the best of both worlds. brightness of 635 red. beam quality of 671 red (or pretty damn close).

I think you should do the 400/640 from Rob. just my opinion. not to mention, you are probably losing at least 10%-20% of the beam of the 650 on your scanner mirrors anyway arent you?

trust me, go for the 640!! you'll thank me later.

-Marc

[norty303]

Thanks everyone for your input, it's been very enlightening! (nearly a laser pun I reckon!)

I think one of the best indications I've seen actually is this thread showing pretty much the red and green I'm looking at next to each other.

http://www.photonlexicon.com/forums/...UK-RGB-modules

I've got to say it looks pretty good from that angle.

Maybe I get one 640 for the moment and compare the projectors back to back, and if I like it, I'll switch the 650 out for another 640....

So, who wants a >1W 650nm with under 20 hours use?

[Insanity]

I would say go for the 640nm, they are superb lasers and like everyone else says, the low divergence enhances the effective brightness massively.

I have a 650mw 640nm Kvant in my RGB and it produces some very deep reds, I was planning on a deep red line in the projector, but really don't need it. The green in the projector is 850mw and I have to run them both full power to balance the colours.

Here is a pic of the 640nm next to a 1 watt Viasho green....



And here are the spots.



This photo shows how surprisingly deep the red is. I know the camera can lie, but this is pretty close to the actual colour. And, no overspill into the white, which I used to get badly from my old 635nm.



Here it is in a club next to 2 x 1 watt green...



If that doesn't convince you, nothing will

Mark

[hobbybob]

Hi Mark,

Love that beautiful white you have in your projector.
What kind of blue did you use in your projector and how many mW is it ?

[Insanity]

It has two blues, 500mw of 445nm and 300mw of 473nm... All the lasers are set to full power on the white and all other colours are configured manually in LD2000 as opposed to using the palette wizard. It will no doubt be at UKLEM at least one of the days, so you can see for yourself...

Here's the build thread: http://www.photonlexicon.com/forums/...e-build-begins

One of the most important points that often gets overlooked these days is that all of your beams match in diameter, this way your colours will not only be crisp, but they will blend with sharper lines and no overspill or blurred edges where the colours leak. I found with my fattie 635nm that if you draw a white circle, it always had a small pink blurred segment in it, but you don't get that when all your beams are the same size... In fact the worst beam in my projector comes out of the green, which will soon be getting replaced...

Mark

[/Unintentional Threadjack]

[norty303]

Oh Mark, I think you've just gone and done it with those pictures!!

Now my biggest issue is Chinese New Year!

[Insanity]

You won't be disappointed