Patent ID: 8466375

Claim:
An apparatus for reducing an electric field and a radiation power in a magnetic resonator for wireless energy transfer, comprising: a transmission end energy transfer unit configured to include a feeding roof and a transmission coil; a receiving end energy transfer unit configured to have a symmetrical structure to the transmission end energy transfer unit, to be separated from the transmission end energy transfer unit at a predetermined distance, and to include a receiving roof and a receiving coil; a first electric field shield configured to be made of a nonconductor, to have a shape surrounding the transmission end energy transfer unit, and to have an empty space of a predetermined first thickness; and a second electric field shield to be made of a nonconductor, to have a shape surrounding the receiving end energy transfer unit, and to have an empty space of a predetermined second thickness, wherein the empty spaces of the first and second electric field shields are filled with a dielectric material for shielding the electric field.