Wireless energy transfer with feedback control for lighting applications

A wireless lighting system comprising:

• a source having at least one high-Q source magnetic resonator coupled to a power source and generating an oscillating magnetic field;
• a device having at least one high-Q device magnetic resonator, distal from the source magnetic resonator, having a light emitting part electrically coupled to the device magnetic resonator;
• and
• a signaling capability between the source and the device;
• wherein power is transferred wirelessly from the source resonator to the device resonator via the oscillating magnetic field and the light emitting part is energized by the electrical energy captured by the device magnetic resonator.

A lighting fixture comprising:

• an illumination device including a battery;
• a magnetic resonator to wirelessly receive power for the illumination device through an oscillating magnetic field;
• a receiver to wirelessly receive a control signal for operation of the illumination device;
• a transmitter to wirelessly transmit a feedback signal characterizing a state of the illumination device;
• and
• a weatherproof housing enclosing the illumination device, the magnetic resonator, the receiver, and the transmitter for outdoor use.