bobhaha
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They don't have much mass... With a fan system they might just suffice, but not at very high power....
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ArcticMyst Security by Avery
445nm in my scanner *Image Heavy*
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They don't have much mass... With a fan system they might just suffice, but not at very high power....
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I take proper care for cooling in such system, besides it won't ever be run at full power in a scanner, otherwise you'd have a room full of blind people
Don't worry, it'll suffice, but at $8.50 it's still a bit expensive.
Grix
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What would you rather choose in your projector? A weak 405nm module or a 445nm module without beam correction optics?
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445nm without beam correction optics.
More visibility, less money, besides you don't even see the uncorrected beam when watching the show anyhow, IMHO. Need to see for myself anyhow
Grix
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Please elaborate.. Won't the flat beam cause "wings" on the side of the other round beams when combining?, f.ex when making white or cyan? That gotta be very annoying to watch..
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No I don't think so since I will attempt to tune all lasers to have the divergence of most diverging one.
For example if fast axiz end up 4 mRad, I will then refocus both red and green to have similar or same divergence.
I'm trying to first get money to order all parts needed, then to get the thing working . Such minor things like perfect white blend is not important to me. It'll still appear white/ish.
Grix
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Oh ok. I couldn't do that though, all my modules are fixed focus..
Also 4 mrad is pretty terrible, even for a projector
The reason I was asking is that when I got my projector, the red module were a tiny bit misaligned with the rest, and even that small hint of solid red on the edge of the white beam was annoying as hell
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ped
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Im in love.
I want that scanner system
I want that scanner system
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Looking good Things! It'll take your breath away once the far-field alignment is secure. I take it you finally got that green module tuned up?
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I really like fiddling with stuff and experimenting, adding my own ideas and everything,Oh ok. I couldn't do that though, all my modules are fixed focus..
Also 4 mrad is pretty terrible, even for a projector
The reason I was asking is that when I got my projector, the red module were a tiny bit misaligned with the rest, and even that small hint of solid red on the edge of the white beam was annoying as hell
Don't you worry no nothing about me, I will figure it out.
I am making my own amp board since predone ones are expensive for me, I won't be using dual output DCDC converter but computer PSU to power everything , 20pin MBU connector has all I need,
I reworked schematic from DrLava accordingly.
Laser heads will be minor problems, alligning them should be really fun IMO.
Oh and, regarding 4 mRad, you see I want to go high with divergence, you never know when you need to take it to concert where you cousing asked you to play in so you gotta do some audience scanning (though I'll avoid that when I'm using it for myself).
I prefer minimal eye risk, even if I have to sacrifise some nice looks.
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Things -- Someday I'll get back to my scanner project. You got some nice pictures.
HMike
HMike
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Pretty much all RGB systems that aren't ion-laser based utilize beams of differing cross-sections and divergence. If your alignment is good (i.e. all beams centered on each other as well as possible) it is very difficult but not impossible to tell during a show due to the motion of the beam. Typically it is easiest to tell when white is being produced as the edges of fans and beams will often be reddish or bluish due to the larger beam cross-section of multimode diodes. Basically, you get things tuned up as well as you can, and then you enjoy the show. Perfect overlap is not usually possible.
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Grix
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Interesting. So beam correction optics is not really necessary in a cheapo projector?
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not really no, but there is certainly nothing wrong with trying to achieve results that are a cut above the rest.. many times it's the little refinements that make for great results instead of good if you see what I'm saying.
I too thought the big 445nm beam would be an issue, but really when it's all aligned, it's not bad at all. If you looked at it up close, you'd probably see it, but the brightness of the beam makes your eyes just see the 1 merged colour. ie, the white beam overpowers the 445nm hanging off the side.
@EF, I got the green module to a point where it wasn't continually flickering and left it there. It still does flicker a little bit, but not a big deal.
Thanks for the compliments
@EF, I got the green module to a point where it wasn't continually flickering and left it there. It still does flicker a little bit, but not a big deal.
Thanks for the compliments
