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Old 12-12-2007, 02:57 PM   #1
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Default Wattage required to destroy a cctv camera?

I was just wondering how much wattage would be necessary to burn out a cctv camera? Lets just suppose that the hypothetical camera is behind a domed plastic cover or flat piece of lexan. Im assuming quite a bit of the lasers power would be wasted passing through the glass/plastic housing. Has anyone done any testing in this area?

I know that lasers of that strength are very dangerous and that they will instantly blind you even if you are hit by a reflected beam. Dont worry I'm not building anything like this nor planning to.

I read that most digital cameras have an "f-stop" that is designed to protect the CCD chip. So the laser must be powerful enough to do serious damage to the ccd in a short period or the camera must be exposed a few times after the f-stop resets. It seems green lasers are best suited to this purpose...
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Old 12-12-2007, 03:24 PM   #2
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Default Re: Wattage required to destroy a cctv camera?

planning to rob a bank or something ;D ;D ;D
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Old 12-12-2007, 03:34 PM   #3
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Default Re: Wattage required to destroy a cctv camera?

I posted about that somewhere around here...
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Old 12-12-2007, 04:20 PM   #4
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Default Re: Wattage required to destroy a cctv camera?

This site gives some good info. Unfortunately he is only interested in temporary disablement of the cameras. Im think more along the lines of a making the CCD nicely toasted.

www dot naimark.net/projects/zap/howto.html
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Old 12-13-2007, 03:56 AM   #5
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Default Re: Wattage required to destroy a cctv camera?

I have to say that this sounds like one of those uses for a laser that really - I can't see any constructive end to. At the least, it's vandalism. At the most, it's a way to prevent observation of criminal activity that could be anything from robbery to who knows what. I'm sure you can find the info you're looking for somewhere, but I hope you decide to find more constructive uses for a laser... I'm probably not the only one who might wonder about your motives.

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Old 12-13-2007, 06:18 AM   #6
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Default Re: Wattage required to destroy a cctv camera?

Don't you ever have the urge to toast a speed camera?

Those things are rigged to hell, a old Datsun was once clocked at doing 158 km/h, a currant affairs program took the car to the track and couldn't get it over 117 km/h.

http://www.abc.net.au/7.30/content/2004/s1121730.htm
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Old 12-13-2007, 12:45 PM   #7
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Default Re: Wattage required to destroy a cctv camera?

yes i would love to toast those speed cameras..... i think anything above 150mw ( green or red) would toast it nicley
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Old 12-13-2007, 01:11 PM   #8
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Default Re: Wattage required to destroy a cctv camera?

A laser is a pretty stupid way to disable a GATSO though, why not just spray the lens with black spray paint?
A paintball gun would work well from a distance.

Ultimatley using a high power laser to burn out any camera is stupid because:
A)You can't be sure it's dead
B)It will probably see you moments before it gets burnt
C)You will get charged for having a dangerous weapon ontop of vandalism.
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Old 12-13-2007, 01:25 PM   #9
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Default Re: Wattage required to destroy a cctv camera?

Quote:
Originally Posted by Chris.
A laser is a pretty stupid way to disable a GATSO though, why not just spray the lens with black spray paint?
A paintball gun would work well from a distance.

Ultimatley using a high power laser to burn out any camera is stupid because:
A)You can't be sure it's dead
B)It will probably see you moments before it gets burnt
C)You will get charged for having a dangerous weapon ontop of vandalism.
It'll see you moments before you spray it or shoot it too.Besides, a paintball marker would qualify more easily as a dangerous weapon than a 150mW laser and it would be hard as hell to hit with over a distance especially in wind conditions.
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Old 12-13-2007, 01:42 PM   #10
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Default Re: Wattage required to destroy a cctv camera?

Quote:
Originally Posted by Switch
[quote author=Chris. link=1197475069/0#7 date=1197555079]A laser is a pretty stupid way to disable a GATSO though, why not just spray the lens with black spray paint?
A paintball gun would work well from a distance.

Ultimatley using a high power laser to burn out any camera is stupid because:
A)You can't be sure it's dead
B)It will probably see you moments before it gets burnt
C)You will get charged for having a dangerous weapon ontop of vandalism.
It'll see you moments before you spray it or shoot it too.Besides, a paintball marker would qualify more easily as a dangerous weapon than a 150mW laser and it would be hard as hell to hit with over a distance especially in wind conditions.[/quote]

Yes but you will need to hit the CCD directly to do any major damage to it, and it might not be permanent.
Where as with paint you can visually see that the lens is blocked.
The incident angle is much more important with the laser so you are more likely to be seen directly (vs wide angle with a paint ball gun)
And I think you could be pretty damn accurate, considering that the divergence of a laser will equally limit you.
That and IMO 150mW is too low, the cameras round my school have a 'black' mirror type coating which would take huge powers to penatrate.

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Old 12-13-2007, 01:56 PM   #11
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Default Re: Wattage required to destroy a cctv camera?


Again I already said I wasnt planning on building anything but several people jump to the conclusion that Im planning some kind of crime (guilty conscience much?).
This is a search for information on a subject that apparently many here are to closed minded to consider.

Your personal opinions on the matter are irrelevant chris and I will continue my research despite any negative things you have to say about it. So unless you are here to contribute in a positive manner please dont post.

Moving on.

Things to consider:

The range the laser has to perform the task from can range anywhere from 50-250 feet away.

The laser and power supply need to be self contained in a relativley small package thus large industrial laser are not suitable.





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Old 12-13-2007, 02:14 PM   #12
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Default Re: Wattage required to destroy a cctv camera?

Really you are talking shit, if you care so much, go and buy a CCTV camera and test it yourself.

In reality, anyone intent on doing this would just buy a 500mW Scorpius and be done with it. If that doesn't work then you are going to struggle to find anything more powerfull in such a portable package.

You have never posted here before, and your first thread is about how to 'hypothetically' wipe out a CCTV camera? Yeah, that's just the publicity the laser scene needs.
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Old 12-13-2007, 03:43 PM   #13
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Default Re: Wattage required to destroy a cctv camera?

Well Chris instead of being so arrogant why not just post:

" Hey a laser powerful enough to do the job is commercially available and its a scorpius 500mw "

I found out that the military has already designed a device to do exactly what I described. If you want to take issue with the development of such weapons because it gives the laser "scene" a bad name you can contact the US government and complain.

My first post should not go directly to the point ?

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Old 12-13-2007, 04:17 PM   #14
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Default Re: Wattage required to destroy a cctv camera?

Why not blast it with a few watts of infrared?
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Old 12-13-2007, 04:24 PM   #15
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Default Re: Wattage required to destroy a cctv camera?

Quote:
Originally Posted by danielbriggs
Why not blast it with a few watts of infrared?
I was thinking the same, you'll just need a camera to see the beam.
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Old 12-13-2007, 04:37 PM   #16
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Default Re: Wattage required to destroy a cctv camera?

Not to mention laser goggles, which would look somewhat suspicious ;D
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Old 12-13-2007, 05:58 PM   #17
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Default Re: Wattage required to destroy a cctv camera?

50mw flashblind most CCD cameras but doesn't damage them. over 100mw and you can damage some. over 200mw and it'll start poking holes and blowing out pixels.

looks like these ( the black spatter pattern on both images )




that's my sony camrea I use for lasers because it hold up rather well, but it still has some ccd burns.

over about 400mw and you just blow a big black hole wherever the laser toches the ccd/cmos.
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Old 12-13-2007, 06:01 PM   #18
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Default Re: Wattage required to destroy a cctv camera?

I've found that a CMOS sensor has a slightly lower damage threshold than does a CCD. YMMV
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Old 12-13-2007, 06:13 PM   #19
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Default Re: Wattage required to destroy a cctv camera?

Quote:
Originally Posted by Chris.


And I think you could be pretty damn accurate, considering that the divergence of a laser will equally limit you.
That and IMO 150mW is too low, the cameras round my school have a 'black' mirror type coating which would take huge powers to penatrate.

As long as the beam fits in the aperture of the camera and the irridiance is high enough it'll cook it.

Also for the black covered cameras. That black filter is IR transparent. ( just like coke is transparent to IR light, google it ) and if the camera has IR capability and IR isn't filtered ( most B&W cctv camreas are not IR filtered ) it WILL fry almost instantly with any IR laser. they are very very sensitive.

Quote:
In reality, anyone intent on doing this would just buy a 500mW Scorpius and be done with it. If that doesn't work then you are going to struggle to find anything more powerfull in such a portable package.

You have never posted here before, and your first thread is about how to 'hypothetically' wipe out a CCTV camera? Yeah, that's just the publicity the laser scene needs.
I've got plenty of laser more powerful than that, I've got a 1.1 watt hades ( which is now called scoprious ) as well as a herc 400 that peaks off over 800mw for 5-10 minutes. I've been using it to cut wasp nests off of my house this week from 5-10 feet away.

Both of those are very expensive. If you really want to take out cctv cameras you'd be better off using a bb or .22 rifle. they are cheap you can be hundreds of feet away. Only thing I'd say a laser would be good for is disabling a heavily armored camera. Most traffic camera now have metal shutters so they only are open when it's taking a pic and then they close.

If you just want to hide from a traffic camera again they all almost see infrared. it would be easier to just line you license plate with IR leds and white it out to the camera. people won't see the light at all, but the camera will see a big ball of overexposed whitespace.
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Old 12-13-2007, 08:15 PM   #20
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Default Re: Wattage required to destroy a cctv camera?

Quote:
Originally Posted by Aseras
[quote author=Chris. link=1197475069/0#9 date=1197556927]




If you just want to hide from a traffic camera again they all almost see infrared. it would be easier to just line you license plate with IR leds and white it out to the camera.
<*heads off to Radio Shack>
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Old 12-14-2007, 12:54 AM   #21
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Default Re: Wattage required to destroy a cctv camera?

I hit an old web cam with my DIY running at 300ma it blinds it but no damage even after a min of fine focus
and this thing goes through 2 layers of commercial grade electrical tape like it was a can liner
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Old 12-14-2007, 01:07 AM   #22
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Default Re: Wattage required to destroy a cctv camera?

aseras, they tested putting ir diodes around a licensplate on mythbusters and it didnt work, they lined it with about 200 and it didnt change anything.

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Old 12-14-2007, 01:50 AM   #23
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Default Re: Wattage required to destroy a cctv camera?

Quote:
Originally Posted by wooooooolazer
aseras, they tested putting ir diodes around a licensplate on mythbusters and it didnt work, they lined it with about 200 and it didnt change anything.

...lazer... ;D ;D ;D
Firstly, That was LIDAR, not speed cameras. secondly, Aseras is suggesting disabling the camera's ability to read you license plate, not disabling the camera's ability to detect your speed.

Quote:
Originally Posted by danielbriggs
Why not blast it with a few watts of infrared?
Because most cameras have IR filters
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Old 12-15-2007, 01:51 PM   #24
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Default Re: Wattage required to destroy a cctv camera?

Quote:
Originally Posted by Cyparagon

Firstly, That was LIDAR, not speed cameras. secondly, Aseras is suggesting disabling the camera's ability to read you license plate, not disabling the camera's ability to detect your speed.

[quote author=danielbriggs link=1197475069/0#13 date=1197566250]Why not blast it with a few watts of infrared?
Because most cameras have IR filters [/quote]


IR filters remove a percentage of IR you blast it with enough IR and it'll still go though. you hit it with enough IR long enough and the IR filter will crack or shatter. The energy they absorb has to go somewhere.
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Old 12-15-2007, 02:00 PM   #25
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Default Re: Wattage required to destroy a cctv camera?

I used to have a website filled with photos of what angry UK residents did to speed cameras, taking a chainsaw to them seemed to be very popular.

EDIT: Found it

http://www.speedcam.co.uk/gatso2.htm



LOL
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