I need to send infrared light from its emitter to a distance of about 10-12 feet. Is this possible?
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Yes it's possible.
It will depend on the strength (intensity) of the infrared light being emitted and the sensitivity of the receiver or detector, but a range of 10 ft is well within the range of most TV remote controls for example.
In 1917 the
British develop the first infra-red search and track (IRST) in World War I and detect aircraft at a range of one mile (1.6 km).
This is just detecting the presence of infrared radiation rather than sending a single, but it shows that the range of several km isn't a problem.
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$\begingroup$ Thankyou. I am using the infrared light which is taken out from my remote control. When I see its light using a camera, it does not go longer then some centimeters. $\endgroup$– user9560Feb 24, 2013 at 14:22
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$\begingroup$ I was also reading the same Wiki article. I saw that there is a infrared called far infrared. I am Googling if that could solve the problem. $\endgroup$– user9560Feb 24, 2013 at 14:23
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$\begingroup$ I am not using a receiver. I would be using a camera to detect it but the camera would detect the light from its back $\endgroup$– user9560Feb 24, 2013 at 14:35
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$\begingroup$ Thanks. Yes it is possible. Here is the proof:youtube.com/watch?NR=1&v=LUGck9mNMDA&feature=fvwp $\endgroup$– user9560Feb 24, 2013 at 14:46