OPTICAL SPATIAL COMMUNICATION DEVICE

摘要

In order to achieve an optical spatial communication device that can have increased compactness of the dimensions of an optical antenna, the present invention is characterized by being provided with: a primary mirror having a through hole at the center; a secondary mirror that has a through hole at the center, receives the light reflected by the primary mirror, and reflects said light towards the through hole of the primary mirror as a first beam; a transmission lens that is disposed coaxially to the secondary mirror at the opening of the secondary mirror, refracts entering light, and causes the result to pass through the through hole of the secondary mirror as a second beam; a reflecting mirror that reflects the first beam and has a through hole at the center that allows the passage of the second beam; a reception device that receives the first beam reflected by the reflecting mirror; and an angle offset detector that receives the second beam that has passed through the through hole of the reflecting mirror and detects the angle offset of the second beam.