60w LASER !!!! OMG o.O wth!!!!!!

:lasergun:

YouTube - 60 Watt IR Laser Diode Does Some Burning

that guy could kill someone with that

That guy is a well known member here, going by same user name, He's missing last couple of months though, but he'll be back.

If you think you've seen something in his videos, you've seen nothing yet.

Anyhow, this is his LPF profile page :
http://laserpointerforums.com/members/billg519/

Quite a few of us have beefy IR lasers. Things, Hemlock_Mike, MarioMaster... I, myself have a 60W co2 laser.

And it's not even the highest you can go, there are 100W and 200W (and above, but not as *common*) CO2 tubes and diode arrays.

Just don't think he's holding this beast in his hands, it's quite beefy laboratory bench installation with water cooling and incredibly massive power supply etc etc...

it still really impressive!!

ahh but can it pop balloons?

So, just out of curiousity... At this level of power, why doesn't the camera get damaged at all? I realize that the sensor isn't as sensitive as our eyes, but because it absorbs light wouldn't it still be able to be damaged by reflections?

enigmahack said:

So, just out of curiousity... At this level of power, why doesn't the camera get damaged at all? I realize that the sensor isn't as sensitive as our eyes, but because it absorbs light wouldn't it still be able to be damaged by reflections?

Click to expand...

And do you hold your Bare hand that close?????? at 2:48 into it

How come it's not heating up the lid so much he can't hold it?

enigmahack said:

So, just out of curiousity... At this level of power, why doesn't the camera get damaged at all? I realize that the sensor isn't as sensitive as our eyes, but because it absorbs light wouldn't it still be able to be damaged by reflections?

Click to expand...

Most cameras have IR filters over the lens.

Well about the lid, I could see the heat being dissipated enough so that the hotness would only be localized to immediately around the beam itself. The hand I could also see reflecting the laser enough that unless you put your hand into the beam it would be mostly okay.

It's the eyes that are REALLY sensitive... which is where I was wondering about the camera too.

Eyes magnify light 200,000 times when it comes in(Even less then 5mw can cause eye damage) and cameras are only like 15,000 times on the CCD. A good camera should be able to withstand indirect reflections , but hitting it with even a 50mw can make burn in ( happened to me.)

Thanks Joey - I appreciate your answer. I knew cameras could get damaged with direct flashes for burn-in, I've done it myself too. I guess I was curious why a CO2 laser, at 60W... why would a reflection blind us but not harm a camera. Your explanation makes sense though. Also, I suppose it's really a digital hardware/organic tissue comparision too which also is interesting.

Thanks

joeyss said:

Eyes magnify light 200,000 times when it comes in

Click to expand...

So you're saying a green 1mm beam would be decreased to 5nm by the eye's lens? I think that violates the laws of physics, sir. Do you have a source?

enigmahack said:

Thanks Joey - I appreciate your answer... I guess I was curious why a CO2 laser, at 60W... why would a reflection blind us but not harm a camera.

Click to expand...

I think mister Joey is making things up, but we'll see what he has to say first. Lasers pose similar threats to eyes and cameras. A direct hit to the eye with a laser pointer will not ruin your entire retina, just as a direct hit to a camera will not ruin the whole sensor. Small areas can be lost in either case. Circuit parts are also inherently more resistant to heat than biological tissue. Most electrical components will run happily along at 140F, but if your body tissue get that hot, it's a different story.

Many of us have cameras with burns because of laser exposure, but very few of us (if any?) have blind spots in our eyes. It DOES happen - quite often.

The biggest reason CO2 lasers don't blind cameras is because cameras use plastic or glass lenses, and these materials do not pass deep IR. Any damage sustained would not be optical, it would be purely thermal. It takes a direct hit to kill a webcam:

Eyes magnify light 200,000 times

Click to expand...

this is not true, to form high resolution images the light must fall on the fovea, and that limits the acute vision angle to about 15 degrees. For example the image of the full moon on the retina is about 0.2 mm in diameter.

Heh, thanks guys!

I had suspected that the numbers might be a little off, however I also knew the truth would come out so no need to refute

All makes sense, I appreciate the help!

look at this monster: YouTube - 2000 WATT MITSUBISHI LASER MODEL LXP 3020