Hacker News new | ask | show | jobs
by alextousss 342 days ago
They do in a YouTube video on their channel [0]. It’s 40 (!) watts. They also show it shooting indiscriminately at any small object, with an example where they feed it foam chips.

[0]: https://youtu.be/Ta0f0oB4I-Q?si=WqlhTmVHVszXSjtU

2 comments

That's more than enough to permanently blind someone with a partial reflection, i.e. you point this at an insect and there's a small polished-metal object somewhere behind it.
In parts of the world bieng able to eliminate mosquitos(other more deadly bugs) will outweigh a great deal of risk assosiated with lasers.

and there are things that can be done.

heat and motion detectors that disarm the system if people/pets are present fields of fire that are above 99.999 % of peoples eyes fields of fire very close to walls, where mosquitos alight, but it is almost impossible to get in the way for humans multiple laser turrets that indivualy dont have the power to hurt a human badly, but can zap a bug through co ordinated action.....perhaps set up outdoors with artificial breath and infra red bait traps to bring the mosquitos above a crowd. more robust systems to be used in agricultural contexts. this will be about comfort and protecting vulnerable populations, mosquitos/other bugs wont be going anywhere, chemical control has proven to cause ecological probelms worse than the bugs, and the attempts at useing biological methods is only a partial solution.

I’m not here to sell my own startup, but there are other ways to kill mosquitoes than a 40 watts laser that could make someone blind from a secondary reflection (out of the mmWave radar detection range)
I think that by "secondary reflection" you are perhaps refering to a direct single reflection, rather than a double bank? But in any case it is very very unlikely that there will anything availible outside of a high caliber optics lab that can reflect cohearant laser beams in such a way as to retain a dangerous power level. The 40 watt laser is needed in order to provide a kill shot in in a small target in millisecond pulse, that only has to penetrate a fraction of a millimeter, and would be unlikely to penetrate a full cm into a human eye and do permanent damage even with a direct hit, not that anyone is going to advocate for useing lasers for eye surgery....oh wait
I may haven't fully understood your answer, but a typical household mirror could reflect 90% of the laser power in a single coherent direction. Any sufficiently polished metal tool would have dangerous specular direction. I'm not sure of the math for a diffuse reflection, but the laser classification is here for a reason.

A human eye being transparent up to the fragile retina, yes, a laser would penetrate the eye and be concentrated in an extremely small spot on the retina. That's exactly the reason why we have safety around lasers, and why everything above 5mw is strictly for enclosed use. 40 watts shot at random in the void is definitely dangerous by all measures.

any light reflected in a domestic situation will no longer be a cohearant laser.if it was very focused UV it could cause temporary blindness, but a milisecond pulse will not contain enough energy to burn @ 40 watts, all that said, it is a given that certifying lasers for full on autonomous bug zapping(a dream of billions), is a very steep regulatory hill to climb, and will not be decided on redit, or here but as insectides get less effective while also proving to be realy bad for our environment, and the possibility of a true plauge bieng vectored by mosquitos a constant concern, I am absoulutly certain that research into laser bug zappers is going to progress
40W is scary strong for a laser. Almost like a nuke compared to a firecracker[0]:

> 5 milliwatts is wimpy. We can do better.

A 1-watt laser is an extremely dangerous thing. It’s not just powerful enough to blind you—it’s capable of burning skin and setting things on fire. Obviously, they’re not legal for consumer purchase in the US.

Just kidding! You can pick one up for $300[1].

[0]: https://what-if.xkcd.com/13/

[1]: http://www.wickedlasers.com/arctic

I imagine it's not a continuous output laser, hunting mosquitoes with one would be insane.
If it can hurt a mosquito, it is also not something I'd want to hit by eye.
But cool! pew pew!