Patent ID: 7474819

Claim:
A contactless connector having a rotation-side light element and a fixed-side light element, for sending and receiving signals between the rotation-side light element and the fixed-side light element contactlessly, comprising: a rotating body which rotates about an axis of rotation, a fixed body; and a reflective body which reflects light emitted from the rotation-side light element or the fixed-side light element in the rotation-axis position, wherein the rotation-side light element is provided on the rotating body, the fixed-side light element is provided on the fixed body, the reflective body forms a light path between the rotation-side light element and the fixed-side light element, the light path is substantially orthogonal to the axis of rotation; and the light path is formed via the reflective body between the rotation-side light element and the fixed-side light element so that the rotation-side light element or the fixed-side light element receives reflected light from the reflective body; the contactless connector further comprising: a detection portion that detects the rotation speed or rotation angle of the rotating body; and a reflective body driving portion that controllably drives the rotation speed or rotation angle of the reflective body by using data detected by the detection portion.