Patents by Inventor Paul R. MOFFITT
Paul R. MOFFITT has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11614365Abstract: A luminescent diode surface within the cold shield of an infrared camera to allow for continuous non-uniformity correction with uniform irradiance across an infrared IR detector array. Further provided by the inclusion of a luminescent diode surface within the cold shield paneling is the ability to change the diode bias providing a negative luminescent effect while utilizing reverse bias and an electro-luminescent effect while utilizing a forward bias. This may then further allow for multiple set points to provide continuous offset and gain correction and to correct non-linear response effects.Type: GrantFiled: April 13, 2021Date of Patent: March 28, 2023Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Jeremy B. Reeves, Steven R. Jost, Paul R. Moffitt, Ian B. Murray, David J. Shelton, Raymond D. Tower, Jr.
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Patent number: 10535495Abstract: A system and method for imaging a sample having a complex structure (such as an integrated circuit). The sample is placed on a motion system that moves the sample with respect to an electron beam generator that is used in imaging the sample. The motion system affords thirteen degrees-of-freedom for movement of the sample, by providing a rotation stage, a fine 6-axis piezoelectric-driven stage, and a coarse 6-axis hexapod stage. Various detectors gather information to image the sample. Interferometric and/or capacitive sensors are used to measure the position of the sample and motion system.Type: GrantFiled: April 10, 2018Date of Patent: January 14, 2020Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Chris L. Willis, Eugene M. Lavely, Adam J. Marcinuk, Paul R. Moffitt, Jonathan R. Takahashi
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Patent number: 10520590Abstract: An active receiver having a digital-pixel focal plane array (DFPA) ranges a target when observing return pulses from a pulsed laser beam synced with the receiver. The DFPA establishes a time when the pulsed laser beam contacts a target and the range can then be established because the speed at which the laser beam travels is known. Various basis functions may be implemented with the DFPA data to establish when the laser beam contacts the target. Some exemplary basis functions are binary basis functions, and other exemplary basis functions are Fourier basis functions.Type: GrantFiled: April 18, 2017Date of Patent: December 31, 2019Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Jeffrey L. Jew, Paul R. Moffitt, Leonard A. Pomeranz, Hermanus S. Pretorius
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Patent number: 10468230Abstract: A system and method for imaging a sample having a complex structure (such as an integrated circuit) implements two modes of operation utilizing a common electron beam generator that produces an electron beam within a chamber. In the first mode, the electron beam interacts directly with the sample, and backscattered electrons, secondary electrons, and backward propagating fluorescent X-rays are measured. In the second mode, the electron beam interrogates the sample via X-rays generated by the electron beam within a target that is positioned between the electron beam generator and the sample. Transmitted X-rays are measured by a detector within the vacuum chamber. The sample is placed on a movable platform to precisely position the sample with respect to the electron beam. Interferometric and/or capacitive sensors are used to measure the position of the sample and movable platform to provide high accuracy metadata for performing high resolution three-dimensional sample reconstruction.Type: GrantFiled: April 10, 2018Date of Patent: November 5, 2019Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Eugene M. Lavely, Adam J. Marcinuk, Amrita V. Masurkar, Paul R. Moffitt, Michael S. Richman, Jonathan R. Takahashi, Jonathan K. Tong, Chris L. Willis
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Publication number: 20190311881Abstract: A system and method for imaging a sample having a complex structure (such as an integrated circuit) implements two modes of operation utilizing a common electron beam generator that produces an electron beam within a chamber. In the first mode, the electron beam interacts directly with the sample, and backscattered electrons, secondary electrons, and backward propagating fluorescent X-rays are measured. In the second mode, the electron beam interrogates the sample via X-rays generated by the electron beam within a target that is positioned between the electron beam generator and the sample. Transmitted X-rays are measured by a detector within the vacuum chamber. The sample is placed on a movable platform to precisely position the sample with respect to the electron beam. Interferometric and/or capacitive sensors are used to measure the position of the sample and movable platform to provide high accuracy metadata for performing high resolution three-dimensional sample reconstruction.Type: ApplicationFiled: April 10, 2018Publication date: October 10, 2019Applicant: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Eugene M. Lavely, Adam J. Marcinuk, Amrita V. Masurkar, Paul R. Moffitt, Michael S. Richman, Jonathan R. Takahashi, Jonathan K. Tong, Chris L. Willis
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Publication number: 20190311877Abstract: A system and method for imaging a sample having a complex structure (such as an integrated circuit). The sample is placed on a motion system that moves the sample with respect to an electron beam generator that is used in imaging the sample. The motion system affords thirteen degrees-of-freedom for movement of the sample, by providing a rotation stage, a fine 6-axis piezoelectric-driven stage, and a coarse 6-axis hexapod stage. Various detectors gather information to image the sample. Interferometric and/or capacitive sensors are used to measure the position of the sample and motion system.Type: ApplicationFiled: April 10, 2018Publication date: October 10, 2019Applicant: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Chris L. Willis, Eugene M. Lavely, Adam J. Marcinuk, Paul R. Moffitt, Jonathan R. Takahashi
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Patent number: 10234745Abstract: A solid state optical beam steering device and method of operation includes converting a frequency or wavelength of a signal in a non-linear converter associated with one channel just before launch. A second channel has a similar constructions and operation. A processor compares the phase difference between the two channels and uses the difference to horizontally steer a beam without moving mechanical parts. This establishes the solid-state nature of the present disclosure. The non-linear converter may be a quasi-phase matched non-linear converter with alternating crystal domains.Type: GrantFiled: July 5, 2017Date of Patent: March 19, 2019Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Paul R. Moffitt, Peter A. Ketteridge, Peter G. Schunemann
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Publication number: 20190011803Abstract: A solid state optical beam steering device and method of operation includes converting a frequency or wavelength of a signal in a non-linear converter associated with one channel just before launch. A second channel has a similar constructions and operation. A processor compares the phase difference between the two channels and uses the difference to horizontally steer a beam without moving mechanical parts. This establishes the solid-state nature of the present disclosure. The non-linear converter may be a quasi-phase matched non-linear converter with alternating crystal domains.Type: ApplicationFiled: July 5, 2017Publication date: January 10, 2019Inventors: Paul R. Moffitt, Peter A. Ketteridge, Peter G. Schunemann
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Patent number: 10156476Abstract: A compact, low cost FTIR spectrometer with no moving parts includes an interferometer having optical paths through silicon waveguides. The optical path lengths are varied by changing the temperature and/or carrier density of at least one of the waveguides. In embodiments, the interferometer is a Mach-Zehnder interferometer. Embodiments vary both optical path lengths in opposite directions. In embodiments, a germanium or InGaAs IR detector is grown on the same wafer as the waveguides. Embodiments include a laser pump, such as a COT CW diode laser, and wavelength mixer, such as an OPGaAs or OPGaP converter, for up and/or down converting measured IR wavelengths into a range compatible with the waveguide and detector materials. The wavelength mixer can be a waveguide. Embodiments include a sample compartment and an IR source such as a glowbar. In embodiments, the sample compartment can be exposed to ambient atmosphere for analysis of gases contained therein.Type: GrantFiled: August 13, 2015Date of Patent: December 18, 2018Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Paul R Moffitt, Peter A Ketteridge
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Publication number: 20180299535Abstract: An active receiver having a digital-pixel focal plane array (DFPA) ranges a target when observing return pulses from a pulsed laser beam synced with the receiver. The DFPA establishes a time when the pulsed laser beam contacts a target and the range can then be established because the speed at which the laser beam travels is known. Various basis functions may be implemented with the DFPA data to establish when the laser beam contacts the target. Some exemplary basis functions are binary basis functions, and other exemplary basis functions are Fourier basis functions.Type: ApplicationFiled: April 18, 2017Publication date: October 18, 2018Inventors: Jeffrey L. Jew, Paul R. Moffitt, Leonard A. Pomeranz, Hermanus S. Pretorius
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Patent number: 9696605Abstract: A method for fabricating crystalline dielectric material on top of metal layers to produce an apparatus for non-mechanical steering of an input laser beam is provided. The apparatus may include a plurality of stacked parallel dielectric waveguides, each waveguide of which is fabricated by separating layers of dielectric material from a donor wafer and bonding the separated layers of dielectric material to a receiving wafer. A plurality of voltages is applied across the stacked parallel dielectric waveguides. Each of the stacked parallel dielectric waveguides is electrically phase modulated to deflect an output beam in a predictable manner.Type: GrantFiled: September 1, 2015Date of Patent: July 4, 2017Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Peter N. Russo, Jeffrey L. Jew, Paul R. Moffitt
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Patent number: 9667021Abstract: In the method for generating blue laser light with high optical and electrical efficiency, wherein the improvement comprises the step of using a phosphate glass photonic crystal fiber rod as a gain medium.Type: GrantFiled: October 6, 2015Date of Patent: May 30, 2017Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Daniel J. Creeden, Peter A. Ketteridge, Paul R. Moffitt, Katherine J. Snell
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Publication number: 20160377482Abstract: A compact, low cost FTIR spectrometer with no moving parts includes an interferometer having optical paths through silicon waveguides. The optical path lengths are varied by changing the temperature and/or carrier density of at least one of the waveguides. In embodiments, the interferometer is a Mach-Zehnder interferometer. Embodiments vary both optical path lengths in opposite directions. In embodiments, a germanium or InGaAs IR detector is grown on the same wafer as the waveguides. Embodiments include a laser pump, such as a COT CW diode laser, and wavelength mixer, such as an OPGaAs or OPGaP converter, for up and/or down converting measured IR wavelengths into a range compatible with the waveguide and detector materials. The wavelength mixer can be a waveguide. Embodiments include a sample compartment and an IR source such as a glowbar. In embodiments, the sample compartment can be exposed to ambient atmosphere for analysis of gases contained therein.Type: ApplicationFiled: August 13, 2015Publication date: December 29, 2016Inventors: Paul R. Moffitt, Peter A. Ketteridge
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Publication number: 20160274437Abstract: A method for fabricating crystalline dielectric material on top of metal layers to produce an apparatus for non-mechanical steering of an input laser beam is provided. The apparatus may include a plurality of stacked parallel dielectric waveguides, each waveguide of which is fabricated by separating layers of dielectric material from a donor wafer and bonding the separated layers of dielectric material to a receiving wafer. A plurality of voltages is applied across the stacked parallel dielectric waveguides. Each of the stacked parallel dielectric waveguides is electrically phase modulated to deflect an output beam in a predictable manner.Type: ApplicationFiled: September 1, 2015Publication date: September 22, 2016Inventors: Peter N. RUSSO, Jeffery L. JEW, Paul R. MOFFITT
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Publication number: 20160099539Abstract: In the method for generating blue laser light with high optical and electrical efficiency, wherein the improvement comprises the step of using a phosphate glass photonic crystal fiber rod as a gain medium.Type: ApplicationFiled: October 6, 2015Publication date: April 7, 2016Inventors: Daniel J. CREEDEN, Peter A. KETTERIDGE, Paul R. MOFFITT, Katherine J. SNELL