| 摘要 |
<p>A wireless power transmission system comprising a power transmitter including a first light source and means for directing its light to a desired direction, and at least one power receiver comprising a first photo-detector for receiving the light and for converting it into electric current. A second light source of the power transmitter transmits light around the light emitted by the first light source and substantially parallel to it, the intensity of the light being lower compared to the first light source. A second photo-detector of the power receiver detects the light emitted by the second light source and transmits a control signal to the power transmitter in response to a successful reception of the light of the second light source. The first light source is switched on when the control signal is received from the power receiver informing of the reception of the light of the second light source.</p> |
