Ubeam Inc.

Raytheon Company

Marc Berte

Matthew Angle

Darin Scot Williams

Kent P Pflibsen

Paul Reynolds

John A Kogut

An array of ultrasonic transducers can be controlled to produce a steerable beam. Beam steering can be skewed by buffer delays in the distribution of a clock signal. The skew can be at least approximately linearized by distributing the clock signal in a diagonal fashion across an array of buffers corresponding to ultrasonic transducer controllers. Potential error in beam steering that can arise from clock skew can be corrected based on the linear tilt.

Transducer clock signal distribution

An ultrasonic transducer that can include a driver side and a bias voltage side. A higher voltage source can be electrically connected to the bias voltage side through a first resistor. A lower voltage source can be electrically connected to the driver side of through a second resistor. A field effect transistor or other suitable switch can be included, having a source, a gate and a drain. The source can be electrically connected to ground and the gate can be electrically connected to a control signal source. The drain can be electrically connected to the lower voltage source through a second resistor and be electrically connected to the driver side of the ultrasonic transducer. The gate can be electrically connected to a signal source through a third resistor.

Transducer driver

An ultrasonic transducer having a container, a base an actuator and a membrane system. The membrane system can include a membrane, a mesa and a standoff. The mesa can be shaped to achieve one or more target frequencies and other target vibrational properties, such as amplitudes. The actuator may be a flexure having one or more electroactive materials, such as piezoelectric and/or electrostrictive materials. The flexure may be fixed at one end to a wall of the container be in communication with the membrane system at or around its other end. The actuator may be in contact with the membrane system through the mesa and/or the standoff. The standoff may include an adhesive filled with beads to achieve a specific thickness.

Transducer with mesa

Ultrasonic driver

An ultrasonic transducer having a membrane and a container having a base and at least one wall element. The one or more wall elements can be situated over at least part of the base to form a cavity that can have an at least partially open end. The open end can be sealed with the membrane and the interior of the container can be maintained at a lower atmospheric pressure than the ambient pressure. Within the container, a piezoelectric flexure can be fixed at one end to a location at a wall element. The other end of the flexure can be in mechanical communication with the membrane, either directly or through a stiffener that is itself in communication with the membrane.

Ultrasonic transducer

A first controller can have a greater number of output lines than a second controller has input lines. The first controller can receive an ultrasonic transducer control signal and provide a first portion of the control signal to the first processor, where the length of the first portion is less than or equal to the number of input lines of the second processor. The first processor can send portions of the control signal to a plurality of second processors. Each of the plurality of second processors can have a number of input lines less than the number of output lines of the first processor. Portions of the control signal can be sent through the output lines of the first processor to the plurality of second processors at substantially the same time.

Ultrasonic transducer control

Embodiments of a multi-plenoptic system with image stacking and method for wide field-of-regard (FOR) high-resolution image are generally described herein. The multi-plenoptic system may include a subfield separator to decompose an image within a wide field of view into a plurality of multi-pixel subfields. The subfield separator may rotate a chief ray within each multi-pixel subfield by a differing amount relative to a rotation of other rays of the subfield. The multi-plenoptic system may also include a subfield modulator to selectively block or pass light from at least a portion of one or more of the subfields and a subfield image formation element to relay the portions of the subfields that are passed by the subfield modulator onto substantially overlapping areas of a common image plane. A single focal-plane array (FPA) may be aligned with the common image plane to provide for high-resolution imaging over a wide FOR.

Multi-plenoptic system with image stacking and method for wide field-of-regard high-resolution imaging

A thermographic imaging device includes a focal array portion including a planar arrangement of a plurality of light sensitive devices, and an aperture portion including a facing planar surface, an opposing planar surface, and an arrangement of a plurality of orifices that are communicative with the facing planar surface and the opposing planar surface, each infrared sensitive device of the plurality of infrared arranged in alignment with a corresponding orifice of the plurality of orifices.

High resolution thermography

Some embodiments pertain to an optical zoom system. The optical zoom system includes a first inward-facing surface that is at least partly reflective and a second inward-facing surface that is at least partly reflective. The optical zoom system further includes a first aperture that includes a plurality of sub-apertures which are positioned around at least a portion of an outer periphery of one of the first and second inward facing surfaces. Each sub-aperture includes an optically powered element. The optical zoom system further includes a second aperture that exists proximate a central region of the optical zoom system. Light is reflected on the first and second inward facing surfaces as the light travels between the first aperture and the second aperture such that the light is optically combined into a single image before exiting the second aperture.

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Ashburn, VA, United States of America

Marc Berte