Old 05-28-2008, 02:58 PM #1
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Default Is This a Good Laser Testing Area..?

when my new laser comes i would like to set up my fog machines and take full advantage of some amazing beam shots. The only problem is that the laser i am getting leaks IR. If it helps, im getting the ultrafire 20mW from DX.

Here is the testing area i would like to use.
A quick update...: the area is around 25 feet but i can go up to about 35 feet.




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Old 05-28-2008, 03:16 PM #2
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Default Re: Is This a Good Laser Testing Area..?

Yea sure it is.You might want a bigger space for divergence measurements, but other than that, it's fine.I'm also curious if you'll test it's waterproofness
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Old 05-28-2008, 03:19 PM #3
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Default Re: Is This a Good Laser Testing Area..?

im thinking about it. but im going to make sure i put a little silicone in the seals before i do that
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Old 05-28-2008, 03:23 PM #4
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Default Re: Is This a Good Laser Testing Area..?

Yeah, that's plenty of space, just watch for reflective objects and it's all good. *When the beam gets scattered of an object or wall, it isn't usually powerful enough to do any serious damage at 20mW. *If you're exposed to it at close range for too long, it may strain your eyes a little, but I wouldn't expect serious eye damage. *That being said, don't take that as an advantage to get close to the dot, because you never want to risk it, but generally it's okay. *Anything over 50mW + would start to become a serious hazard in an enclosed space and you would have to start wearing propper protective goggles, but yeah, with a 20mW laser you should be fine for now... Just remember one thing, never shine it in anyone's eye, wheter that be directly or from a reflection...
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Old 05-28-2008, 03:56 PM #5
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Default Re: Is This a Good Laser Testing Area..?

alright i gotcha. the only problem is that it has been said to output more than 20mW of green and another 20mW of IR
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Old 05-28-2008, 05:13 PM #6
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Default Re: Is This a Good Laser Testing Area..?

Quote:
Originally Posted by bobobob121
alright i gotcha. the only problem is that it has been said to output more than 20mW of green and another 20mW of IR
Like I say it's relatively low power, but it's just a matter of being concious of your surroundings and not looking directly down the beam. IR can leak in a wider radius than the beam it's self, so even being away from the beam slightly can still leave you exposed. But yeah, I shouldn't be too worried about that kind of power level, you just have to be careful. It's a common cause of not having the IR filtered, a bummer but you have to deal with it.
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Old 05-28-2008, 05:23 PM #7
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Default Re: Is This a Good Laser Testing Area..?

so wait, if im looking from my laser down the beam i can get IR? or do you mean looking towards the laser beam coming out of the aperture?" the laser is pointed towards me"
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Old 05-28-2008, 05:42 PM #8
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Default Re: Is This a Good Laser Testing Area..?

With the laser pointed towards you, there is a chance of IR exposure.
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Old 05-28-2008, 05:47 PM #9
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Default Re: Is This a Good Laser Testing Area..?

alright, thats what i figured. I thought he was telling me that if i looked down "the barrel" in the same direction as the laser was pointed that i would get IR.
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Old 05-28-2008, 05:56 PM #10
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Default Re: Is This a Good Laser Testing Area..?

Quote:
Originally Posted by bobobob121
so wait, if im looking from my laser down the beam i can get IR? or do you mean looking towards the laser beam coming out of the aperture?" the laser is pointed towards me"
Yeah, I always concidered to be looking down into the beam, and up with the beam... If you look into the beam you can get IR exposure...
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Old 05-28-2008, 06:02 PM #11
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Default Re: Is This a Good Laser Testing Area..?

If you look INTO the beam you're gonna get green exposure, which is far worse than IR exposure :

Anyway, the beam appears the brightest when you're looking towards the laser. :P
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Old 05-28-2008, 06:06 PM #12
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Default Re: Is This a Good Laser Testing Area..?

yea i know, thank you guys for all the help
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Old 05-28-2008, 10:26 PM #13
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Default Re: Is This a Good Laser Testing Area..?

I dont get this away and towards and down. Please explain before anything happens to my eyes.

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Old 05-28-2008, 10:58 PM #14
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Default Re: Is This a Good Laser Testing Area..?

this diagram i just made should clear things up a little bit ;D
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