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oasis8005
4.99mW Green Laser Toy
Joined: 08 Sep 2006
Posts: 7
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 Posted: 5/25/07, 9:26 PM Post subject: Infrared. |
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| Will this be able to be used to blind infrared night-vision devices? |
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Laser Ben
Wicked Lasers God
Joined: 26 Dec 2006
Posts: 1689
Picture(s): 376
Movie(s): 8
Location: Cupertino, California, USA
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| Posted: 5/25/07, 9:29 PM Post subject: |
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Um... If you shine it into the night vision it will. But it is often used with night vision to point things out.
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Aseras
Fusion Laser
Joined: 03 Nov 2006
Posts: 352
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| Posted: 5/31/07, 1:25 PM Post subject: |
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| I'd say it will depend on the generation of NVD. Gen1 for sure, gen 2 stuff maybe. Gen3 will adjust and you'll just be a nice brightly lit target. |
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BrewDude
Modified 10mW Greenie
Joined: 16 Nov 2005
Posts: 15
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| Posted: 8/14/07, 10:33 PM Post subject: |
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| I don't know if I'd want to be on the transmitting end of that in a fire fight. Makes you a pretty easy target. You can't blind everyone with it. |
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leeb
4.99mW Green Laser Toy
Joined: 17 Aug 2007
Posts: 3
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| Posted: 8/17/07, 3:24 PM Post subject: |
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A general question for those more experience and/or technically-based than me on this: If the beam's sustained for any length of time, would the beam itself be visible to a (non-target) night visioneer?
Would a low-freq laser heat up the air/vapor in its path enough to be visible itself? 1) Pretty neat effect, if so; 2) even worse news for anyone using one who doesn't want to be found...
-l |
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Laser Ben
Wicked Lasers God
Joined: 26 Dec 2006
Posts: 1689
Picture(s): 376
Movie(s): 8
Location: Cupertino, California, USA
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| Posted: 8/19/07, 9:33 PM Post subject: |
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Yes, a high energy Q-switched laser can superheat the air around it and make interesting effects. Lasers need to be high energy, several joules, and have short Q-switch pulses, <100nS, to make this happen. For example, a 15J 10nS laser would be 1500GW peak.
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Overmind
Elite Laser
Joined: 24 Jun 2007
Posts: 140
Location: Classified
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| Posted: 8/20/07, 2:16 AM Post subject: Re: Infrar |
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| oasis8005 wrote: |
| Will this be able to be used to blind infrared night-vision devices? |
If the device is an infrared night vision device, then yes.
But usually night vision devices are just image intensifiers and those are not too affected by IR (depends on the manufacturer).
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I am the Universe. Resistance is Futile. The Truth is classified. |
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leeb
4.99mW Green Laser Toy
Joined: 17 Aug 2007
Posts: 3
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| Posted: 8/20/07, 8:40 AM Post subject: |
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To the image-intensifying answer: I can see that; that's understandable--On the other hand, without some scatter, I'm not sure a laser per se would add much to your advantage in that case, anyway, eh?
And yes--I was thinking IR; trying to be a little more devious than just low-light amplification.
While I'm at it (and about 40 degrees off-topic), does anyone know: Does anyone make a combo device (IR + image intensifier)? |
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rafael
25mW Classic Wicked Laser
Joined: 23 Aug 2007
Posts: 29
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| Posted: 8/23/07, 8:07 PM Post subject: |
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| IF you have hightech things, ones that aren't like binoculars, they will just show up as a light, it won't be transmited through ,you will see a bright light on the screen, but the power of the laser won't transfer through. |
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Overmind
Elite Laser
Joined: 24 Jun 2007
Posts: 140
Location: Classified
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| Posted: 8/23/07, 11:51 PM Post subject: |
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| leeb wrote: |
While I'm at it (and about 40 degrees off-topic), does anyone know: Does anyone make a combo device (IR + image intensifier)? |
There are NV goggles for the military that use multiple vision modes, including IR, UV, intensifier, and inversion.
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sungod
Modified 10mW Greenie
Joined: 28 Sep 2007
Posts: 13
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| Posted: 10/01/07, 6:44 PM Post subject: |
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| Interesting does it cause cancer of any sort:-) |
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