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Mosquito Laser






Kookapeli

Kookapeli

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that would mean that the mosquito would have to fly past in a 3ft radious which is only a small area which would make the device not very efficient??
 
ApexProxy

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Welcome to any repellant.

Also if you placed the device next to an attractant of some kind or over a pool of water the odds of them flying in front of it would go up a lot and 3 feet was only an example.
 
Meatball

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Kookapeli said:
that would mean that the mosquito would have to fly past in a 3ft radious which is only a small area which would make the device not very efficient??
Click to expand...

Its one thing to be a skeptic, but you're less than that since you're offering no useful contribution to the discussion of the science, alternatives to what you disagree with, or answers to the OP's question. This thread wasn't made so your opinion could be heard over and over again - no one cares. You're making it look like some kind of toy that someone put together just for fun or even for your convenience. This is NOT the case.

This was made for a more specific purpose - not aimed at the grocery store mother looking to protect her kids with "new" technology.

This technology IS effective and it does have its preferred scenarios for use.

To answer the OP's question - they use violet because violet is much more readily absorbed by organic material - which means yes - its is much better for burning. The last version of this device I saw, will actually target the insect's wings. The wings are the source of the sound, and when you need to slice off something's that's almost transparent - use will choose violet before any other band.

Another advantage is that a violet wavelength will require less power than say "red" to do "work" on what you want it to do. Honestly, to slice off mosquito wings, I have to suspect that the average power is somewhere between 30 and 100 mws. And from the videos I've seen, the pulse does not fire for long at all. :)

Just imagine putting this unit on top of a light post, where mosquitos can go and get shot - without allowing a focused laser dot appear near any people.

Its pretty simple - but brilliant!
 
Lazerbeak

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Heard about this a while back. For reducing the deaths from Malaria, good cause and use of technology in my opinion :)

1267379209_mosquito-laser.gif


Apparently they can even determine whether the mosquito is male or female.

~ LB
 
ApexProxy

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Lazerbeak said:
Heard about this a while back. For reducing the deaths from Malaria, good cause and use of technology in my opinion :)

1267379209_mosquito-laser.gif


Apparently they can even determine whether the mosquito is male or female.

~ LB
Click to expand...

I agree fully. I fracking hate Mosquitoes...
 
benmwv

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This is awesome!

Probably auto focuses the laser since it knows where the mosquito is.

I think it can tell the male from female because males are the big ones and females are the little ones that usually bite you. The females wings I'm sure flap faster because of the size.

I see one problem though. Imagine this scenario and then tell me the device isnt a lawsuit waiting to happen:

The device is placed in a park to keep away mosquitos. Some unfortunate guy brings his dog to the park, perhaps trying to teach him to return the ball after playing fetch. He throws the ball, dog gets it, he says "here boy", blows his dog whistle, boom blasted in the eye by anti mosquito laser system. It heard the ~20khz from the dog whistle and fired.
 
Lazerbeak

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Based off of SDI tech, initially conceived of in 2007 and resurrected recently by the Gates Foundation. Sorry for the long post but this explains it :)

Mosquito laser - Wikipedia, the free encyclopedia

Photonic fence[edit]
The device works by using infra-red Light Emitting Diode (LED) lamps on a fence post to create a field of light. This field of light reflects from retroreflective material on another fence post, much like that used on roads and highway signs, and bounces back to its source.[10] This field of light is monitored by charge-coupled devices (CCDs) similar to the ones used in consumer digital cameras.[11] These cameras are situated on both fence posts and detect shadows in the light between the posts. Once an insect is detected, a non-lethal laser is fired at it. This non-lethal laser is used to determine the size of the insect, and the frequency at which its wings are beating.
The information gathered by the non-lethal laser can be used to determine the type of insect, and even its gender because wing beat patterns are unique to each species and gender. This is important in preventing malaria because only female mosquitoes bite humans.[10] Also, only mosquitoes of the genus Anopheles carry the malaria-causing parasite of the genus plasmodium.[12] All of these determining calculations are done using a custom image processing board[8] using software written specifically for this application. Once the software confirms that the insect is of the targeted species and gender, a safety check makes sure that nothing is in the way of the laser and the mosquito. Once this safety check is completed, the lethal laser is given permission to shoot.
The lethal laser could be one of several low-power consumer lasers, but blue lasers, similar to the ones found in Blu-ray players, are thought to have great potential. Blue lasers are used in preference to other color lasers, such as green and red because they have higher energy, and they also minimize the amount of power used.[11] The lethal laser is fired at the mosquito and is able to kill it mid-flight. The exact reason for the mosquito’s death is unknown[citation needed], but it is likely that the mosquito simply overheats and dies.[10] In a video published by Intellectual Ventures, the mosquito's wings appear to be sliced off and the body drops to the floor, often motionless.[13] Jordin Kare has published instructions on how to build a DIY photonic fence.[14] 3ric Johanson published information about the history of the device and how the system works in Make Magazine Issue 23.[8]
Click to expand...

An article on building your own :thinking:

http://spectrum.ieee.org/consumer-electronics/gadgets/backyard-star-wars

~ LB
 
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benmwv

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I stand corrected. I thought it was using an array of microphones to find the mosquitos.
 
ApexProxy

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Yay photons :D

That sounds like a much more consistent and accurate way to detect mosquitoes to me.

Also a note on the frequency thing above. 20kHz is obscenely fast and from my understanding that's many thousands of times faster than any insect can flap its wings. I could be wrong though :p

EDIT: Ok, well it appears that on research that the fastest insect flapping speeds can be around 1kHz. Mosquito flap speeds appear to be around 400-600Hz. Think of it this way, you can hear a Mosquito buzzing in your ear pretty easily which means its not above the hearing frequency range. It would be too dangerous to go by sound frequency alone so the photonic fence idea is really good imo. Now that I think about it I am sure people can whistle at the frequency a Mosquito flaps, that could be bad LOL. Whistle for your dog... BAM laser in the eye. Yeah, stick to the photonic fence XD.
 
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Meatball

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benmwv said:
I stand corrected. I thought it was using an array of microphones to find the mosquitos.
Click to expand...

An "array" of them would be able to pinpoint the source of the sound. No "blanketing" sound over all the mics would be counted as a signal - but rather as noise that needs to be filtered out.. kind of like a common - mode input. Only the differential input get amplified when you're trying to "sense" differences in output from an array of sensors - whatever they are.
 
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B

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To everyone making constructive posts: thanks :) I've enjoyed reading the responses. Technology continues to advance at such a fast pace and I'm always very interested in learning about new innovative ways that lasers can benefit society.
 
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hakzaw1

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