Can Infrared lights be seen by the naked eye?
I plan on making a pair of Night Vision Goggles but I need as much help as I can get. I saw some videos on YouTube and heard that Infrared lights can be seen by camera but of course they’re videotaping it on a camera. What exactly do I need? How much will this cost me? And will the Infrared lights be seen by the naked eye? I heard they can only seen by the video or digital camera. Are there any sites that show exactly what they look like? The layout. I somewhat want them to look close to the pair of MW2 (Call of Duty: Modern Warfare 2) night vision goggles. But smaller towards the front. Please help!!!
The human eye can’t detect infrared, but most digital cameras can. For reasons I don’t fully understand it shows up as white, rather than red as you might expect. However, it’s important to note this is near infrared, not thermal infrared. So in other words you won’t be able to see people just by their body heat, you need an IR light source. So effectively what this gives you is an "invisible flashlight", you can shine it around and see things through the camera, but it doesn’t attract attention like a regular flashlight would.
December 5th, 2009 at 1:30 am
negative
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December 5th, 2009 at 2:19 am
Infrared can’t be seen by the naked eye. ‘infra’ means ‘beyond’, so infrared is beyond the red end of the visible spectrum.
I work with an infrared laser, and the beam is invisible. I was surprised once when I was trying to take a picture of a setup and found that I could see the beam in the video viewer of the camera! So yes, some video or even still cameras can see infrared. On my camera it shows up as white, which it isn’t. Then again, if it showed up as its actual color, you still couldn’t see it because it’s actual color is -invisible-! 8^)
Just on a hunch, I tried to see the signals coming out of the TV remote control, which are also infrared (but much weaker). And yes, you can see that too!
There is an infrared vision toy, called EyeClops (because it’s just one ‘eye’ like a cyclops). It’s only like $70, and if I had more money to throw around these days I might buy one just to play with it. You can see it here:
http://www.thinkgeek.com/geektoys/science/abf5/?cpg=froogle
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December 5th, 2009 at 2:42 am
no: infrared light have shorter waves than the light we can detect with our retina. But it’s a radiation very similar to the light an in old times that affected photography so that filter to block the Ir radiation were invented. But at the same time, as the solar emission is a slightly mayor in the IR than in the visible light were developed also film to get picture of it.
As electronic devices developed was possible to obtain a faster detection of IR an so IR vision developed.
The principle uf the IR vision is that the waves are pitched by sensor that are sensible tho this length of waves and transformed in a sort of "fake color photography" that is projected to a tv screen.
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December 5th, 2009 at 3:23 am
Pure IR, including an IR laser, which is a very narrow frequency, can’t be seen by the human eye. But other sources of IR, including some IR LED’s are not that pure and when looked at will look red from the edge of the band. Also, some people see red further out the spectrum than others.
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December 5th, 2009 at 3:45 am
Officially no, but I have an infrared flashlight and the light source isn’t perfect so I can see a bit of a red glow from it. Most digital cameras can see it to a degree, but almost all of them have filters to block it. You might want to shop before you buy. Probably your best bet would be to buy a surveilance camera.
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http://shop.ebay.com/?_from=R40&_trksid=p3907.m38.l1313&_nkw=infrared+camera&_sacat=See-All-Categories
December 5th, 2009 at 3:54 am
No but you can feel it on your skin.
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December 5th, 2009 at 4:28 am
The human eye can’t detect infrared, but most digital cameras can. For reasons I don’t fully understand it shows up as white, rather than red as you might expect. However, it’s important to note this is near infrared, not thermal infrared. So in other words you won’t be able to see people just by their body heat, you need an IR light source. So effectively what this gives you is an "invisible flashlight", you can shine it around and see things through the camera, but it doesn’t attract attention like a regular flashlight would.
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December 5th, 2009 at 5:06 am
good luck making them , if you want , buying them may be cheaper
http://search.yahoo.com/search?p=goggles%20infrared
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