Patent ID: 7813602

Claim:
A non-contact connector comprising: a rotation-side light-emitting element and a rotation-side light-receiving element, both positioned on a rotating body which rotates about a rotation axis; a fixed-side light-emitting element and a fixed-side light-receiving element, both positioned on a fixed body; a first partial ellipsoidal reflecting mirror installed on the fixed body, said first partial ellipsoidal reflecting mirror having two focal points; and a second partial ellipsoidal reflecting mirror, installed on the rotating body, said second partial ellipsoidal reflecting mirror having two focal points, with one of said focal points of said second partial ellipsoid reflecting mirror being portioned on said rotation axis, wherein an optical path is defined between the rotation-side light-emitting element and the fixed-side light-receiving element via the first partial ellipsoidal reflecting mirror, which is a portion of a three-dimensional elliptical reflecting body, and another optical path is defined between the fixed-side light-emitting element and the rotation-side light-receiving element via the second partial ellipsoidal reflecting mirror, which is a portion of a three-dimensional elliptical reflecting body, wherein data is exchanged in a non-contact state, and further wherein the rotation-side light-emitting element and the fixed-side light-receiving element are placed on the two focal points of the first partial ellipsoidal reflecting mirror and the fixed-side light-emitting element and the rotation-side light-receiving element are placed on the two focal points of the second partial ellipsoidal reflecting mirror.