US Patent 11876105 Laser light collecting assembly for a wireless power receiver

A laser light collecting assembly for a wireless power receiver. The assembly includes a compound parabolic concentrator (CPC) mirror and an optical to electrical converter. The CPC mirror has curved internal walls that define an inlet aperture and connect the inlet aperture to an outlet aperture. The inlet aperture may be larger than the outlet aperture. The internal walls may focus a majority of the laser light entering the inlet aperture to the outlet aperture. The optical to electrical converter may be positioned adjacent to the outlet aperture and configured to receive the laser light exiting the outlet aperture so as to convert optical power in the laser light to electrical power.