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ArcticMyst Security by Avery

Alittle help. Where to buy and how much power?

N

Natpotten

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Mar 21, 2013
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Hi,

Im brand new at this so.... I would like to build two green lasers that you can see in the sky far away. At this point i have no budget.

So what do i need to create the must visible laser?

I need the power source to be 220V.

I have been looking at some threads to get up to date, but can't figure out exactly what i need.

Hope you can sent me some links and post some productive knowledge!


In advance THANKS! - Lasse :)
 





C

corey5188

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Hows the temperature outside where you plan on using it? 532nm tends to be extremely temperature sensitive....
 
ZRaffleticket

ZRaffleticket

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Will the laser be running for that full time? If so, continue reading, if not, disregard my post :p

For that time period you want to buy a lab laser. Though, it depends on the size of the casing... you do need some space for the optics and heat dissipation. Can you post dimensions of the casing? If it's too small we may have a problem... especially for the PSU's.

I'll let you discuss how much power you'll need with the other members but I recommend buying from one of these places...


I bought from Lasever a total of three times already, their prices are the cheapest plus (from what I and others bought) it will probably be overspec.
I've personally dealt with a lab laser from Ultralasers, they have great quality.
CNI's quality is often not matched, though sometimes they're hard to deal with.
Laserglow orders from CNI but sell the best of the best units.
Jetlasers I haven't heard a problem about, though I haven't seen a review on a lab laser.
I've only heard positives about Meierlight.
 
N

Natpotten

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ZRaffleticket said:
Will the laser be running for that full time? If so, continue reading, if not, disregard my post :p

For that time period you want to buy a lab laser. Though, it depends on the size of the casing... you do need some space for the optics and heat dissipation. Can you post dimensions of the casing? If it's too small we may have a problem... especially for the PSU's.

I'll let you discuss how much power you'll need with the other members but I recommend buying from one of these places...


I bought from Lasever a total of three times already, their prices are the cheapest plus (from what I and others bought) it will probably be overspec.
I've personally dealt with a lab laser from Ultralasers, they have great quality.
CNI's quality is often not matched, though sometimes they're hard to deal with.
Laserglow orders from CNI but sell the best of the best units.
Jetlasers I haven't heard a problem about, though I haven't seen a review on a lab laser.
I've only heard positives about Meierlight.
Click to expand...

Well.. Right now its -3 C degress

I have no actual specs, on the housing. So depending on how big the laser is, and how warm it gets i will build out from that.

IF its possible to make a laser that kan be out in all kinds of weather from -10/5 to +25 degrees.

Best regards

- Lasse :)

PS. Thanks for all the replys!!!
 
N

Natpotten

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So...

Just to get clear... I'm looking for 2 cheap, but relatively stable lasers. I'm going to make an installation ontop of a house roof. I need them to been seen from long distance. It is intentet for a promotion act, for an event bureau here in Denmark. The bureau is making electronic concerts.

So whats better than some awesome lasers to get peoples attention :)


I just wantet to inform you guys :)
 
C

corey5188

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It might be easier to build the lasers into some kind of projector style housing, and have them inside, then have the beams coming up out of the roof and then reflected in the direction you want...
 
norbyx

norbyx

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I think that you have a misconception of power vs. visibility. If you want to see the laser from your standpoint than the lasers you are looking at might be good enough. But if you want other people to see the beam from MILES away, than you would have to spend thousands of €.
I have a green laser that almost hits 1w and I can't imagine people can see it from miles away.
 
Eradicator

Eradicator

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My buddy and I did a test with My 3W and the 1W I built him. He was at a friends house about 1.5 miles away, per google maps.

You can see it easily when it is sitting still. And it continues past you as far as the eye can see. Id say people at 3 miles at can probably still faintly see the beam if its not moving.

I was viewing the 1W from a mile and a half away and this is what i saw, My buddy said my 3w was still screaming through the sky at max brightness. So ya, they are visible from at least 2 miles around.
 
norbyx

norbyx

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^^^^ you are talking of 1w and 3w. He is talking of a 100mw laser
 
Eradicator

Eradicator

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Seeing as how 125mw of green is roughly equal to 1800mW of 445 in beam brightness, and 532 generally has better divergence, Id say it will be just as visible as my 1 and 3 watt.

Also I was just trying to show it does not take 1000s of dollars to have a beam visible from a few miles around.
 
norbyx

norbyx

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Well even if I don't agree on the fact that the green with 100mw laser will be seen from such a long distance (maybe in a night with no moon and no city lights), There's still the problem Of the duty cycle he wants to achieve, I doubt it done a handheld laser will be able to withstand that type of torture.
 
Eradicator

Eradicator

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Again, I was just speaking of brightness. Obviously he will need a labby for constant duty cycle.

Beam: (532nm 125mw) vs. (445nm 1791.47mw)
This gives a rough idea of equivalent beam brightness, it is not perfect though, I have also seen it with my own eyes and can say that 100mW of 532 is easily equal to 1500mW 445. Both of which I have viewed from more than a mile away.
 
S

svdr

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>> I'm looking for 2 cheap, but relatively stable lasers. I'm going to make an installation ontop of a house roof. I need them to been seen from long distance. It is intendet for a promotion act, for an event bureau here in Denmark. The bureau is making electronic concerts<<

>>So whats better than some awesome lasers to get peoples attention<<

Those awesome lasers will cost you several €10.000 if you want them to be visible from long distance, i.e. kilometers.

Cheaper solution will be sky tracers, which are in essence very bright halogen floodlamps. There are within European community regulations against using sky tracers, so you will need to ask for a permit and an exclusion of the regulations. You will need the same with lasers above certain power.

If I were you, and since you are working for a company, I would contact a company specialised in organising laser shows. See if you can find the company that does the Aarhus Elektronik laser show. They must understand what you are talking about.
 
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