signaling laser?

[ixfd64]

Hmm, this looks pretty interesting: http://www.landfallnavigation.com/sglf1.html

It's visible up to 32 km, runs up to 72 hours, and is waterproof up to 24 meters. I wonder what its specs are.

 

[Switch]

Well I'm guessing it's relatively lowpowered since it doesn't have much room for heatsinking and lasts that long. :

 

[bob12345]

http://www.rescue-flares.co.uk/How_to_use_Rescue_safety_flares.html

Not really useful (for us, anyway).

Genius idea though. Overall nothing special:

Yes. Our lasers are classified by the The United States Food and Drug Administration as a Class IIIA Laser Product.

Aixiz module + DVD diode + line spreader = much better.


Note that they mean visible, as in the dot (as in, your position), not the beam. Simply because of the coherent nature of laser light, the origin is just too hard to miss.

 

[Switch]

Oh yea, there we go, shining lasers at planes and helicopters : This laser is a terrorist weapon, lol

You won't be able to make a DVD laser last 72 hours but why on earth would you need that?? And I agree, a line generator would be way better than a horribly divergent laser.