PROJECT 5Simple Infrared Illuminator

INFRARED LIGHT FALLS just below red on the light spectrum, making up the wavelengths from about 750 to about 1500 nanometers (nm). This light cannot be seen by human eyes, but it can easily be seen by many video cameras, making it useful as a covert lighting method in night vision systems. A common example of infrared light is the medium of communication between your remote control and television set. The light-emitting diode (LED) at the end of your remote sends out pulses of infrared light, which are received by the infrared detector on the TV and demodulated back into data. Of course, you cannot see the pulses because they are out of our visual range, but any video camera that is not equipped with an infrared ...

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