An optical transmission/reception unit , comprising: a carrier rotatable around an axis of rotation , an optical receiver arranged at the carrier on the axis of rotation so as to receive an optical reception signal from a first direction, an optical transmitter arranged at the carrier adjacent to the optical receiver so as to emit an optical transmission signal in a second direction, and transmission/reception optics arranged at the carrier on the axis of rotation above the optical receiver and extending across the optical receiver and the optical transmitter , wherein the transmission/reception optics include reception optics and transmission optics integrated in the reception optics , wherein the reception optics are configured to guide the optical reception signal striking the transmission/reception optics towards the optical receiver on the axis of rotation , and wherein the transmission optics are configured to guide the optical transmission signal emitted by the optical transmitter onto the axis of rotation so that a transmission beam propagates from the transmission/reception optics along the axis of rotation , characterized in that the transmission optics are formed by a portion of a surface of the reception optics facing away from the optical receiver , the second portion is configured to deflect the optical transmission signal received from a transmission face in parallel to the axis of rotation , the portion is formed by a recess in the surface of the reception optics facing away from the optical receiver , and the function of the transmission face is realized by suitable shaping of the surface of the reception optics facing away from the optical receiver . a carrier rotatable around an axis of rotation , an optical receiver arranged at the carrier on the axis of rotation so as to receive an optical reception signal from a first direction, an optical transmitter arranged at the carrier adjacent to the optical receiver so as to emit an optical transmission signal in a second direction, and transmission/reception optics arranged at the carrier on the axis of rotation above the optical receiver and extending across the optical receiver and the optical transmitter , wherein the transmission/reception optics include reception optics and transmission optics integrated in the reception optics , wherein the reception optics are configured to guide the optical reception signal striking the transmission/reception optics towards the optical receiver on the axis of rotation , and wherein the transmission optics are configured to guide the optical transmission signal emitted by the optical transmitter onto the axis of rotation so that a transmission beam propagates from the transmission/reception optics along the axis of rotation , characterized in that the transmission optics are formed by a portion of a surface of the reception optics facing away from the optical receiver , the second portion is configured to deflect the optical transmission signal received from a transmission face in parallel to the axis of rotation , the portion is formed by a recess in the surface of the reception optics facing away from the optical receiver , and the function of the transmission face is realized by suitable shaping of the surface of the reception optics facing away from the optical receiver . <EOS>