Perpetrators who pointed lasers at planes sought

parnass

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Perpetrators who pointed lasers at planes sought

"...The Coast Guard is looking for those responsible for pointing a green laser at airplanes landing in Barbers Point in two incidents this year.

After the incidents in late February and early March, the Coast Guard flight crews were checked immediately at Tripler Army Medical Center. They were not injured....
"

Full story:

http://starbulletin.com/2007/04/03/news/story03.html
 

nerdgineer

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Yeah, they probably shouldn't be summarily executed (that is reserved for those who go on rampage shootings and make it worse for law abiding gun owners), but I wouldn't mind if someone held each of those guys down and burned a line across one of their retinas (avoiding the fovea - I don't want to be too harsh) with an appropriate green laser. Just so they get the point about safety and being anal orifices.

Second offense, we take out the fovea...
 
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Kiessling

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This one is a bit over the top for our family forum ... please tone it down with the suggestions. Thank you :)
bernhard
 

fixorater

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Its funny... a friend of mine sent me this same article yesterday since he knows I'm interested in lasers and I live here in hawaii.

I don't think I've ever seen another person with a green or red laser outdoors here. I'm hoping that this means this was a couple of isolated incidents here.
 
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Turkeys like this give up all a bad name and wind up getting stuff banned. The problem is that they provoke, and provide ammo for, those who want us all to live in a nanny state anyway.
 

Candlestine

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It's like with anything, a few morons/deranged individuals ruine it for the majority. Automatic weapons, driving fast (safely!), high capicity clips, rubber free sex, and countless more...
 

luvlasers

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Rubber free sex??? Shouldn't that be latex free sex?

Banning laser pointers and heavy penalties for their ownership is no good. But a plane full of dead people is no good either. What would be an effective solution???
 

Candlestine

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luvlasers said:
Rubber free sex??? Shouldn't that be latex free sex?

Banning laser pointers and heavy penalties for their ownership is no good. But a plane full of dead people is no good either. What would be an effective solution???

Well, most are made of latex, some lambskin, but there all still refered to as "rubbers"

I imagine the restrictions will be like firearms. Regestrations, background checks etc. I'm surprized some teroists haven't tried it yet.

What do you call 365 rubbers? A GOOD YEAR!


Add laser blocking filters to airliners windsheilds.

Is it really possible to filter out all wavelenghts of lasers? I'm perty dumb when it comes to lasers, but filtering out red, green, blue, yellow, would kinda kill ones color perception?
 

fixorater

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A sufficiently powerful green laser could easily blind if well aimed- even if infrared was filtered. The danger of infrared is you don't know you are going blind... you can't see or feel it burning out your retinas.
 

65535

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fixorater, you can most definately feel IR burning you, you just can't tell until it's too late.
It is pretty inconcievable to block every possible Laser light wavelength, you end up blocking just about any useable wavelength for seeing, unless they use solid shields or blinds and only use them if a camera fails, you can't blind a camera soo easily.
 

gadget_lover

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This is probably an unpopular position, but here goes anyway.

First, bright lights should never be pointed at pilots or drivers. The distraction and disorientation can cause major trouble.

Having said that, I will also point out that I think people are over-reacting. A typical laser pointer is not collimated well enough to hold a tight beam at any distance. 5 mw spread over even 1 square foot may appear bright but should not have enough power to cause eye damage.

Yep, the folks doing this are at best thoughtless and at worst evil, but there much more serious crimes to become impassioned about. They should be dissuaded, but not necessarily subjected to draconian measures.

Daniel
 

2xTrinity

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Having said that, I will also point out that I think people are over-reacting. A typical laser pointer is not collimated well enough to hold a tight beam at any distance. 5 mw spread over even 1 square foot may appear bright but should not have enough power to cause eye damage.
The beam divergence though, even though it means that the beam won't be intense enough to cause permanent eye damage, is still going to be bright enough to be a distraction at a critical time period -- similar to shining a bright flashlight in someone's face that's trying to drive. The fact that the beam is more spread out due to the divergence means there's a higher chance of the beam hitting the pilot's face than a narrowly collimated "dot".

^ Wouldn't you only need to filter out the infrared waves?
Well, in the case of a green laser with crappy filtering, the IR isn't going to be much of an issue -- the optics are designed for green, since the IR is longer wavelength, it doesn't get focused the same, so instead of being collimated into the beam, it spreads out in a "cone" like a flashlight beam. Taking a photo of a poorly filtered laser with a IR-sensitive camera will show a fairly wide corona around the "spot", at longer range, the IR will be be spread out/lower intensity. At the distance if the airplane, the IR intensity will be insignificant.

The problem with IR comes from hitting yourself with a reflection at very close range, as you won't be able to tell where it is, and the IR hasn't spread out much. I would still be more worried about accidentally hitting yourself with a reflection of the green though, as that will be a lot more intense, and on a higher powered laser (esp. >10mW) do damage faster than one's reaction time.

Now, if someone actually pointed an IR laser at a plane, that would be a completely different story -- that would be the one more likely to cause eye damage, as it wouldn't be noticed, though it probably wouldn't dazzle the pilot the same way a green laser would due to a momentary "flash".
 

allthatwhichis

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I know this link is here somewhere, but I'll post it again. Pangolin's site has an animation that...
"This 14-second animation shows the three visual effects that concern experts: distraction (dimmest), glare (medium) and temporary flashblindness (brightest, with fading afterimage)."

It also has a chart that shows the divergence of each of the 3 visual effects. :popcorn:
 
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