Patent ID: 8254791

Claim:
An optical transmitting apparatus comprising: an electric signal generating section for generating an electric signal by converting a predetermined input signal; a light source in which a plurality of light emitting devices are arranged, wherein said light source converts the electrical signal into an optical signal; and a light source control section for turning ON/OFF the light emitting devices to emit light, wherein the optical transmitting apparatus emits visible light by emission of the light emitting devices and performs optical communication by turning ON/OFF the light emitting devices, the light source has a plurality of light emitting device groups each being formed of a plurality of the light emitting devices, and the light source control section controls the respective light emitting devices to control a light quantity as an illumination light; wherein the light source control section selects a color combination device group which forms one optical communication channel and makes a particular visible light color by color synthesis, and the light source control section causes the color combination device group to emit light; wherein when the color combination device group used for the optical communication channel does not emit light, the light source control section causes a color combination device group not used for the optical communication channel to emit light so that a light quantity of the light source as a whole becomes substantially uniform.