Abstract: In a device for transmitting optical signals between a first sub-assembly having a first lens, a first bearing ring, and a first clamping sleeve, which has a conical surface, and a second structural unit having a second lens, a second bearing ring, a second body, a second clamping sleeve, which has a conical surface, and a clamping device, the first bearing ring and the second bearing ring are associated with a bearing by which the first sub-assembly and the second sub-assembly are connected to each other rotatably about an axis. Arranged in a centered manner in relation to the axis are: the first lens on the first bearing ring with the aid of the first clamping sleeve through a first conical connection, the second lens on the second body with the aid of the second clamping sleeve through a second conical connection, and the second body on the second bearing ring with the aid of a clamping device by a third conical connection.