| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-contact power transmitter capable of reducing in size and weight and capable of preventing reduction of the transmission efficiency.SOLUTION: The non-contact power transmitter includes: a transmission device having a primary coil 20; and a receiver device having a secondary coil 40. The diameter d1 of a space 21 at the primary side of the primary coil 20 is smaller than the diameter d2 of a space 41 at the secondary side of the second coil 40, the ratio of the outer diameter D1 of the primary coil 20 with respect to the outer diameter D2 of the second coil 40 is smaller than 0.7. |
