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872 online
Server Time:
2024-05-11 05:12:43
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 Ninjako
    
Location: Winnipeg
Gender: Male
I Wonder What's In Here
 |  | Re: homemade nightvision
<Reply # 20 on 3/18/2006 12:36 AM >
|  | | | Posted by Deuterium
Incandescent is very rich in infrared ;)
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Yes, but the point of the device would be to emmit strictly IR light, not light that's visible to the naked eye...
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silver halide
Gender: Male
| | Re: homemade nightvision
<Reply # 21 on 3/18/2006 6:12 AM >
| | | | I'm in film, and there are filters available which totally block visible light but which are clear to longer wavelengths (IR). I don't know, but it might be possible to get a gel (meaning a thin sheet of plastic filter placed over a light) which does the same thing - might be worth looking into. Then you could use a sungun or some other powerful battery powered lamp. The gel would look black or almost black to your eyes. And, as far as I know, tungsten (incandescent) lamps deliver a high percentage of IR light - it's what makes them so inefficient.
Anyway, I don't know, it would be worth looking into if you are interested in this seriously. It might also be worth trying some kind of light amplification system in conjunction with infrared technology, and then you'd be talking. What I mean is inserting some kind of gain circuit into your camera to increase it's inherent gain circuit - the result: more noise (grain) but also more image (hopefully). It would take someone a little more technically apt than me, but it should work.
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Errant
Gender: Male
| | Re: homemade nightvision
<Reply # 22 on 3/25/2006 1:13 AM >
| | | | silver, that's really innovative, and a friend reported it actually works! For a less high-tech approach, i've found really low-power red and blue lights work well if you're trying to explore undetected.
Hatred is weakness! Joy is paramount! Let all else fall by the wayside. |
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Duke
 
Noble Donor
Location: Awww-shitby, Ontario
Gender: Male
Move it or lose it
| | Re: homemade nightvision
<Reply # 23 on 3/28/2006 6:56 AM >
| | | | Imagine this, PC on a chip output to a sony glasstron visor, two webcams with the IR filters removed, and the CMOS sensor equiped with a more capable wide-angle lens. pop an IR illuminator in there and you're laughin. hehe, ok maybe I'm thinking a little too complex.
Contrary to popular belief, death isn't just for dead people. I know I was surprised too! It can happen to anybody! Horses, fiddler crabs, even a potato can die! - Tick
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Ninjako
Location: Winnipeg
Gender: Male
I Wonder What's In Here
| | Re: homemade nightvision
<Reply # 24 on 3/28/2006 9:54 PM >
| | | | Posted by Duke
Imagine this, PC on a chip output to a sony glasstron visor, two webcams with the IR filters removed, and the CMOS sensor equiped with a more capable wide-angle lens. pop an IR illuminator in there and you're laughin. hehe, ok maybe I'm thinking a little too complex.
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Extreme disorientation and lack of depth perception.. I hope you have a lot of practise at home with this "device" before take it out to use 
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wr0x2
| |  | Re: homemade nightvision
<Reply # 25 on 3/28/2006 11:20 PM >
| | | | I bought a CVS camcorder with this project in mind, and let me say a couple things. First, the page is absolutly correct when it says that everything is zoomed in. Forget about navigating indoors. Also, and more importantly, the CVS screen is lowres and doesn't look good through the magnifying eyepiece.
Even so, it's a fairly cool project for $30. Besides developed photonegatives, does anyone know what makes a good visible light filter? I don't really want to go and buy one.
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Junix
Location: Pitt Meadows, BC, Canada
Gender: Male
Resident Firebrand
| | Re: homemade nightvision
<Reply # 26 on 4/14/2006 10:30 PM >
| | | | Posted by Ninjako
It definitely would be.. The IR LEDs are pretty weak.. If you have an old webcam laying around and are bored on a Sunday, try taking the IR filter out of the case and lighting up things with your remote control in the dark.. Basically the same thing, not very effective
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Other than not being the same thing at all its the same thing... Remotes are modulated not always on. They are off more than they are on.
RUAUER?
"Security Measures: Creepy guy in trailer comes out at the slightest sound." -notwearingpants "And were off. N." -nobody |
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wr0x2
| | | Re: homemade nightvision
<Reply # 27 on 4/16/2006 9:39 PM >
| | | | Ninjako means lighting things up by pressing a button on the remote... it's low power and flickers, but it does light things up if the room is completely dark.
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YellowSnow
Gender: Male
| | Re: homemade nightvision
<Reply # 28 on 4/18/2006 3:25 AM >
| | | | | For a less high-tech approach, i've found really low-power red and blue lights work well if you're trying to explore undetected. |
You're absolutely right. If you use a low powered red LED light, it's basically undetectable from far away. I use it all the time when exploring places at night, especially one location that is about 100 ft. away from the cop station. They share the same grounds. Cops are always driving around the place. But if I'm using a red LED flashlight, I doubt they can even see that from the outside.
It's because red is the lowest visible color on the spectrum, so from farther away, it's hard to see.
>_> |
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