Patent ID: 8131154

Claim:
A visible light communication apparatus comprising: a transmitter for illuminating and projecting visible light on which an information signal is superimposed; and a receiver for receiving the visible light illuminated and projected from the transmitter to take out the information signal superimposed on the visible light; wherein the transmitter is provided with a transmitter main circuit including a modulation circuit for modulating a signal to generate a transmission information signal, and a lamp fitting for driving a light projecting element to superimpose the transmission information signal on the visible light, thereby radiating white light containing a blue light component as visible illumination light, the receiver is provided with a light receiving unit for receiving the white light containing the blue light component radiated from the lamp fitting of the transmitter, and a receiving circuit for generating a receiving information signal from a light receiving signal output from the light receiving unit, a pseudo white light emitting diode having a structure that a light emitting part of the blue light emitting diode is covered with a red-green fluorescent body and generating white light by a mixture of two light colors, the blue light and yellow light, which are complimentary to each other, and are used in the projecting element of said lamp fitting, and a blue light photodiode for receiving blue light at the highest sensitivity to output the light receiving signal is used as a light receiving element of the light receiving unit.