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ArcticMyst Security by Avery

O-like has a 3.2W IR for sale on ebay !






sbdwag

sbdwag

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Im not sure if the word fun would be appropriate. Perhaps responsible, safe, enlightening, forwarned, experimental, dangerous, playing with fire, all seem to enter my psych more than fun.

It bugs me that a reflection that I cannot see might partially blind me. That is what scares me about this unit. But I bet the sucker would burn wood at thirty feet.

If I owned one of these I would mount a red sight laser on it just for safety

regards
sbdwag
 
potatorage

potatorage

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Hm, I wouldn't make a big deal out of it. It'll be visible enough so that you can see the dot, most likely the reflection won't be so bad-- IR doesn't seem to damage the eyes as badly as lower wavelengths
 
sbdwag

sbdwag

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potatorage said:
Hm, I wouldn't make a big deal out of it. It'll be visible enough so that you can see the dot, most likely the reflection won't be so bad-- IR doesn't seem to damage the eyes as badly as lower wavelengths
Click to expand...


That's good to know that my eyes wont be damaged as bad :thinking: Anyway I saw a demo on youtube of a 40w ir and the guy had his hand around it lighting matches and paper and burning thru a tin can lid holding onto the lid with his hand. CRAZY

Any body know how to make a light trap that will not let ir out of it once the beam enters without a lot of heat buildup.

regards
sbdwag
 
potatorage

potatorage

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It really isn't a big deal. As long as you don't put sensitive parts directly into the beam you should be fine
 
styropyro

styropyro

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sbdwag said:
But I bet the sucker would burn wood at thirty feet.
Click to expand...
This laser would be a great burner from up close, but without additional optics distance burning would be very hard. The multimode beam from this really limits any distance burning.

Also, I think Rayfoss sells some of these cheaper. The exact same 1.7W labby that o-like sells for around $180 can be bought from Rayfoss for around $130.
 
sbdwag

sbdwag

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Potatorage do you have a potato gun?

I have a 5v 6a switching power supply unit that should work for this dont you think.

regards
sbdwag
 
potatorage

potatorage

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No potato gun yet, what's a switching power supply? If it's a wall wart rated @ that current and voltage it should be fine, but check with a multimeter first.
 
sbdwag

sbdwag

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A switching power supply is a power supply that oscillates a power transistor full on and full off at a high frequency ~10khz and generates a square wave which is then filtered into a dc voltage. The main advantage of it is it generates little heat because at full on there is little voltage drop across the power transistor. It allows you to make a very small unit the size of a soap box generate current that would compare to a standard power supply the size of a small microwave using conventional transformers and filtering. The are used in all computers, medical anywhere you need high current in a small package.

regards
sbdwag
 
styropyro

styropyro

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Oh, about the eye damage thing...there are goggles for that. :D

Yeah a 5v 6A power supply should work fine. I plan on getting one of these modules (probably the 1.7W from Rayfoss) soon so I'll just hook it up to an old computer power supply and make a cool looking switch box with LED indicators and other scary looking things for good measure.
 
Ramsey_innovations

Ramsey_innovations

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Tech_Junkie said:
The longer the wavelength the less burn. What is more dangerous is that you cant see it coming.
Click to expand...

This is not necessarily true, there are exceptions such as 10.6 micrometers, A.K.A. heat for its ability to be absorbed by nearly everything, however for the most part you are correct.
 
MarioMaster

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Yeah it would probably suck at long range burning. I have a 60 watt 808nm laser, this thing doesn't scare me :p

I stick my hand in the beam at low/medium currents all the time, feels like having your arm in the sun (although to a larger extent)

It's not like instant death for entering the beam. Heck a lot of stuff doesn't absorb light very well at these wavelengths. Even with 60 watts of optical power I can't toast a marshmallow unless I "sharpie" it with some blue food coloring ;)
 
E

ElektroFreak

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potatorage said:
Hm, I wouldn't make a big deal out of it. It'll be visible enough so that you can see the dot, most likely the reflection won't be so bad-- IR doesn't seem to damage the eyes as badly as lower wavelengths
Click to expand...


*FACEPALM* Where the hell did you come up with that?? IR is just as dangerous as visible light if not more so when it's by itself since you can't see the beam or the reflections. If you don't own suitable IR goggles, DON'T EVEN THINK ABOUT BUYING THIS LASER!!!!!!! Even the diffuse reflections have the potential to damage your eyes if it comes from the right surface. Just be careful when you're working at these kinds of powers. It's not a trivial matter.
 
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