SPATIAL OPTICAL COMMUNICATION DEVICE AND SPATIAL OPTICAL COMMUNICATION SYSTEM USING THE SAME

PROBLEM TO BE SOLVED: To provide an optical communication device with high transmission and reception sensitivity.SOLUTION: A spatial optical communication device for transmitting and receiving light on which a communication signal is superposed is provided. The spatial optical communication device includes: a concave first reflecting surface which includes a first rotating curved surface facing forward, and is provided with an opening on a center axis of the first rotating curved surface; a convex second reflecting surface which is arranged on a center axis in front of the opening and includes a second rotating curved surface facing the opening, the diameter of the second reflecting surface larger than the aperture of the opening; and a light-receiving unit arranged at a position retreated from the opening.SELECTED DRAWING: Figure 2 【課題】送受信感度が高い光通信装置を提供する。【解決手段】通信信号が重畳された光を送受信する空間光通信装置を提供する。この空間光通信装置は、前方に向いた第１の回転曲面を含む凹面状の第１の反射面であって、第１の回転曲面の中心軸上に開口が設けられた第１の反射面と、開口の前方の中心軸上に配置され、開口を向いた第２の回転曲面を含む凸面状の第２の反射面であって、当該第２の反射面の直径の方が開口の口径より大きい第２の反射面と、開口から後退した位置に配置された受光部とを有する。【選択図】図２