Photo-detecting device, photo-emitting device and optical wireless communication device

摘要

An optical communication device having features such as: a simple structure, easily mountable, less restrictions in arrangement designing, easy to attain compact arrangement, a mechanical sturdiness and a stable wide directional angle, is constituted as follows. A plurality of LED lamps as photo-emitting elements are mounted on a base plane with a predetermined angle inclined around long axe of the respective LED lamps and the long axe of the LED lamps are arranged so as to dived a circle on the base plane equally.