Wirelessly powered wireless mouse

A demonstration of my recent college project, a proposed application of wireless power transfer. The project involved construction of a special mouse pad that houses an energy transmitter, and modification of a preexisting wireless mouse, which used to be powered by batteries. The mouse pad is constructed from plywood, housing a Royer oscillator in one corner and a planar coil under the pad which is made from two layers of copper shielding tape. The receiver coil inside the mouse is constructed from litz wire and was quite a difficulty to insert into already confined spaces inside the mouse.

The mouse battery compartment houses a small PCB with a full wave rectifier and a buck regulator which converts the received AC voltage to stable 3V DC suitable for powering the mouse.
The royer oscillator on the mouse pad receives 5V power from the mouse's USB radio-receiver dongle.

Of course, a commercial product would be a normal looking, flexible mouse pad that connects to the PC over USB; some components like capacitors would need to be miniaturized, and all circuitry apart from the resonant LC circuit would likely be moved into the USB dongle.
This would be intended as a method of eliminating cables and batteries in high-end, high power draw computer mice. As a possible further upgrade, the coil could be build into the table itself and power various other things.

Please dpon't ask for schematics/plans/whatever for now. Thanks for watching!

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