Human light technology used, as can be seen with the naked eye, with a wavelength between 380-750 nm to communicate information. Use led bulbs (LED) as a signal and use a photo diode (Photodiode) to receive signals.
Is a technology that uses light that humans can not see with the naked eye, with wavelengths from 380-750 nm in data communications. Fluorescent LED (LED) as a transmitter and a photo diode (Photodiode) of the signal.
Is a technology that uses the light that humans can be seen with the naked eye, wavelength from 380 - 750 nano meter in data communication using tubes led. (LED) signal and use the photo diode (Photodiode) in the receiver .