The Invention Science Fund I LLC

Searete LLC

Elwha LLC

Microvision, Inc.

David R Nash

Russell J Hannigan

Nathan Kundtz

Ryan Allan Stevenson

Adam Bily

Clarence T Tegreene

Jeffrey A Bowers

Matthew Stephen Reynolds

Guy Shlomo Lipworth

Daniel Arnitz

Joseph Hagerty

Yaroslav Aleksandrovich Urzhumov

John Desmond Hunt

Benjamin K Wilson

Michael C Hegg

Philip A Sullivan

Anna K Boardman

Lawrence Frederick Arnstein

Jeff Dallas

George Thomas Valliath

Margaret K Brown

Joseph A Hagerty

Systems and methods are described herein for providing wireless power to a mobile device, such as an aerial mobile device like an unmanned aerial vehicle (UAV). A navigational constraint model may prescribe a navigation path along which a wireless power transmission system can provide wireless power to the mobile device. Deviations from the prescribed path may require the mobile device to self-power. The prescription of a navigation path allows for the use of reduced-complexity wireless power transmitters that are fully capable of servicing the prescribed path. Multiple embodiments of prescribed paths with various limitations and features are set forth herein, along with multiple embodiments of wireless power transmission systems of reduced complexity and functionality to fully service the various embodiments of prescribed paths.

Wireless power transfer along a prescribed path

System and methods are described herein for providing wireless power to a target device, such as a laptop computer, a mobile phone, a vehicle, robot, or an unmanned aerial vehicle or system (UAV) or (UAS). A tunable multi-element transmitter may transmit electromagnetic radiation (EMR) to the target device using any of a wide variety of frequency bands. A location determination subsystem and/or range determination subsystem may determine a relative location, orientation, and/or rotation of the target device. For a target device within a distance range for which a smallest achievable waist of the Gaussian beam of the EMR at an operational frequency is smaller than the multi-element EMR receiver of the target device, a non-Gaussian beamform may be determined to increase efficiency, decrease overheating, reduce spillover, increase total power output of rectenna receivers on the target device, or achieve another target power delivery goal.

Non-Gaussian beamforming for wireless power transfer optimization

Systems and methods are provided for various tunable multi-timescale wireless rectification systems. Tunable multi-timescale wireless rectification systems may include multiple feedback control loops, systems, or sub-systems that modify characteristics of components of a wireless rectification system on various timescales. A wireless rectification system may include antennas, impedance-matching components, rectifying devices, DC-to-DC converters, and/or load controllers. Two or more feedback controls may function on different timescales to modify one or more characteristics or functionalities of components of the wireless rectification system in response to monitored AC and/or DC power values at various locations within the wireless rectification system. Feedback controls operating on various timescales may include antenna feedback controls, impedance feedback controls, rectifying feedback controls, and/or DC feedback controls.

Dynamic rectifier circuits with multiple-order timescale feedback controls

Surface scattering antennas provide adjustable radiation fields by adjustably coupling scattering elements along a wave-propagating structure. In some approaches, the scattering elements are complementary metamaterial elements. In some approaches, the scattering elements are made adjustable by disposing an electrically adjustable material, such as a liquid crystal, in proximity to the scattering elements. Methods and systems provide control and adjustment of surface scattering antennas for various applications.

Surface scattering antennas

Solutions for limiting the undesirable spread of pathogens by indirect contact are provided. The solutions involve heat-sanitization of contact regions on articles or fixtures by flowing selected electromagnetic radiation energy through underlying waveguide structures substantially parallel to the contact regions.

Heat-sanitization of surfaces

Surface scattering antennas provide adjustable radiation fields by adjustably coupling scattering elements along a wave-propagating structure. In some approaches, the scattering elements are patch elements. In some approaches, the scattering elements are made adjustable by disposing an electrically adjustable material, such as a liquid crystal, in proximity to the scattering elements. Methods and systems provide control and adjustment of surface scattering antennas for various applications.

Surface scattering antenna improvements

An apparatus determines a cursor position in an illumination field of a projector. An obstruction is detected in the illumination field. The cursor position is determined as the point on the obstruction furthest from where the obstruction crosses a border of the illumination field. A distance to the point on the obstruction is determined and compared to a distance to a point not on the obstruction. Gestures are recognized as a function of movement of the obstruction and the determined distances.

Interactive projection with gesture recognition

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Arlington, WA, United States of America

David R Nash