They look great, but I wonder if anyone's felt the urge to walk over to one and put their hand into the beam. Or a bottle of beer. Maybe it's just me, but this the most dangerous thing I think I've ever seen done with a 1W laser source, much more so for 24W.
Compared to an average hmi1200 spotlight they are not spitting out more photons.
So *at the lens* the power density is just as dangerous.
@ laser dj
Can you tell me whats the NOHD of your builds ?
I just get very nervous whenever I see laser light heading up, especially straight up, from anywhere below head level. Doesn't matter how well the area is controlled. I'd recommend mounting them on the roof of a vehicle or something of similar height. Otherwise, I hope you're covered with lots of insurance! But they look GREAT!!!
Looking at the beam diameter, I assume the power density is probablt lower tham many small DPSS lasers.
Please can you confirm beam diameter & divergence? Or just diameter if thats all you know.
Starting off with 24 Watts, a 3" diameter beam would be around 400 milliwatts per square cm. So you could probably put about 100 milliwatts into an eyeball with the thing. They are among the coolest looking beams I've seen in a photo. What a great "searchlight" effect. Here in the US wouldn't you need the FAA to approve shooting them straight up? At least if you're within so many miles of an airport? The FAA's approval is probably conditioned on the laser being non hazardous and only representing a startle hazard. Just thinking out loud and then writing down the noise. . .
- Mike