Patents by Inventor Paul S. Banks
Paul S. Banks 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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Publication number: 20150296201Abstract: Embodiments of the invention provide systems and methods for three-dimensional imaging with wide field of view and precision timing. In accordance with one aspect, a three-dimensional imaging system includes an illumination subsystem configured to emit a light pulse with a divergence sufficient to irradiate a scene having a wide field of view. A sensor subsystem is configured to receive over a wide field of view portions of the light pulse reflected or scattered by the scene and including: a modulator configured to modulate as a function of time an intensity of the received light pulse portion to form modulated received light pulse portions; and means for generating a first image corresponding to the received light pulse portions and a second image corresponding to the modulated received light pulse portions. A processor subsystem is configured to obtain a three-dimensional image based on the first and second images.Type: ApplicationFiled: April 13, 2015Publication date: October 15, 2015Inventor: Paul S. Banks
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Patent number: 9007439Abstract: Embodiments of the invention provide systems and methods for three-dimensional imaging with wide field of view and precision timing. In accordance with one aspect, a three-dimensional imaging system includes an illumination subsystem configured to emit a light pulse with a divergence sufficient to irradiate a scene having a wide field of view. A sensor subsystem is configured to receive over a wide field of view portions of the light pulse reflected or scattered by the scene and including: a modulator configured to modulate as a function of time an intensity of the received light pulse portion to form modulated received light pulse portions; and means for generating a first image corresponding to the received light pulse portions and a second image corresponding to the modulated received light pulse portions. A processor subsystem is configured to obtain a three-dimensional image based on the first and second images.Type: GrantFiled: June 24, 2013Date of Patent: April 14, 2015Inventor: Paul S. Banks
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Publication number: 20130278713Abstract: Embodiments of the invention provide systems and methods for three-dimensional imaging with wide field of view and precision timing. In accordance with one aspect, a three-dimensional imaging system includes an illumination subsystem configured to emit a light pulse with a divergence sufficient to irradiate a scene having a wide field of view. A sensor subsystem is configured to receive over a wide field of view portions of the light pulse reflected or scattered by the scene and including: a modulator configured to modulate as a function of time an intensity of the received light pulse portion to form modulated received light pulse portions; and means for generating a first image corresponding to the received light pulse portions and a second image corresponding to the modulated received light pulse portions. A processor subsystem is configured to obtain a three-dimensional image based on the first and second images.Type: ApplicationFiled: June 24, 2013Publication date: October 24, 2013Inventor: Paul S. Banks
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Patent number: 8471895Abstract: Embodiments of the invention provide systems and methods for three-dimensional imaging with wide field of view and precision timing. In accordance with one aspect, a three-dimensional imaging system includes an illumination subsystem configured to emit a light pulse with a divergence sufficient to irradiate a scene having a wide field of view. A sensor subsystem is configured to receive over a wide field of view portions of the light pulse reflected or scattered by the scene and including: a modulator configured to modulate as a function of time an intensity of the received light pulse portion to form modulated received light pulse portions; and means for generating a first image corresponding to the received light pulse portions and a second image corresponding to the modulated received light pulse portions. A processor subsystem is configured to obtain a three-dimensional image based on the first and second images.Type: GrantFiled: November 25, 2009Date of Patent: June 25, 2013Inventor: Paul S. Banks
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Publication number: 20100128109Abstract: Embodiments of the invention provide systems and methods for three-dimensional imaging with wide field of view and precision timing. In accordance with one aspect, a three-dimensional imaging system includes an illumination subsystem configured to emit a light pulse with a divergence sufficient to irradiate a scene having a wide field of view. A sensor subsystem is configured to receive over a wide field of view portions of the light pulse reflected or scattered by the scene and including: a modulator configured to modulate as a function of time an intensity of the received light pulse portion to form modulated received light pulse portions; and means for generating a first image corresponding to the received light pulse portions and a second image corresponding to the modulated received light pulse portions. A processor subsystem is configured to obtain a three-dimensional image based on the first and second images.Type: ApplicationFiled: November 25, 2009Publication date: May 27, 2010Inventor: Paul S. Banks
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Publication number: 20090173619Abstract: An apparatus and method for selectively dissociating target molecular species present in a gas mixture is disclosed. An embodiment of an apparatus of the present invention comprises a containment structure for containing a gas mixture having a target molecular species; and a radiation source proximate to the containment structure and configured to apply electromagnetic energy to the gas mixture in the containment structure, the electromagnetic energy having a wavelength that dissociates molecules of the target species. An embodiment of a method of the present invention comprises the steps of containing a gas mixture having a heavy hydrocarbon; and applying to the gas mixture electromagnetic energy having a wavelength that dissociates molecules of the heavy hydrocarbon.Type: ApplicationFiled: January 9, 2008Publication date: July 9, 2009Applicant: GENERAL ATOMICS, A CALIFORNIA CORPORATIONInventor: Paul S. Banks
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Patent number: 7366211Abstract: A laser device which may be used as an oscillator or amplifier comprising a chamber having a volume formed therein and a gain medium within the volume. The gain medium comprises a solid-state element containing active laser ion within the volume. A cooling fluid flows about the solid-state element and a semiconductor laser diode provides optical pump radiation into the volume of the laser chamber such that laser emission from the device passes through the gain medium and the fluid. The laser device provides the advantages of a solid-state gain medium laser (e.g., diode-pumping, high power density, etc), but enables operation at higher average power and beam quality than would be achievable from a pure solid-state medium.Type: GrantFiled: September 5, 2006Date of Patent: April 29, 2008Assignee: General AtomicsInventors: Michael D. Perry, Paul S. Banks, Jason Zweiback, Robert W. Schleicher
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Patent number: 7103078Abstract: A laser device which may be used as an oscillator or amplifier comprising a chamber having a volume formed therein and a gain medium within the volume. The gain medium comprises solid-state elements containing active laser ion distributed within the volume. A cooling fluid flows about the solid-state elements and a semiconductor laser diode provides optical pump radiation into the volume of the laser chamber such that laser emission from the device passes through the gain medium and the fluid. The laser device provides the advantages of a solid-state gain medium laser (e.g., diode-pumping, high power density, etc), but enables operation at higher average power and beam quality than would be achievable from a pure solid-state medium.Type: GrantFiled: July 26, 2005Date of Patent: September 5, 2006Assignee: General AtomicsInventors: Michael D. Perry, Paul S. Banks, Jason Zweiback, Robert W. Schleicher, Jr.
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Patent number: 6937629Abstract: A laser device which may be used as an oscillator or amplifier comprising a chamber having a volume formed therein and a gain medium within the volume. The gain medium comprises solid-state elements containing active laser ion distributed within the volume. A cooling fluid flows about the solid-state elements and a semiconductor laser diode provides optical pump radiation into the volume of the laser chamber such that laser emission from the device passes through the gain medium and the fluid. The laser device provides the advantages of a solid-state gain medium laser (e.g., diode-pumping, high power density, etc), but enables operation at higher average power and beam quality than would be achievable from a pure solid-state medium.Type: GrantFiled: November 21, 2002Date of Patent: August 30, 2005Assignee: General AtomicsInventors: Michael D. Perry, Paul S. Banks, Jason Zweiback, Robert W. Schleicher, Jr.
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Patent number: 6865213Abstract: A solid-state laser device consists of a gain medium in the shape of a polyhedron. A beam enters the gain medium at one surface of the polyhedron and is reflected internally at one or more surfaces with each reflection occurring in approximate the same plane as the plane of incidence of the incident beam. The beam enters and exits the gain medium at different locations. Pump radiation enters the polyhedron through one or more faces. The laser device may be used as the gain medium for a laser oscillator or a laser amplifier. In one variation, the polyhedron contains an internal core section in which there is no gain material. In another variation, the gain medium further includes one or more surfaces oriented to achieve a 90 degree internal reflection of the beam.Type: GrantFiled: March 7, 2001Date of Patent: March 8, 2005Assignee: General AtomicsInventors: Michael D. Perry, Paul S. Banks
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Patent number: 6784400Abstract: A method for removing material via a laser so as to reduce the formation of channels comprising the steps of emitting a laser pulse comprising a pulse energy, a pulse duration, and a fluence towards a surface of a drilling material the fluence of a value sufficient to avoid the formation of a channel in the drilling material at the surface to form a hole comprising a side wall and a bottom, shaping a spatial profile of the laser pulse such that the fluence is substantially uniform across the spatial profile; and emitting at least one subsequent laser pulse having a pulse energy, a pulse duration, and a fluence sufficient to avoid the formation of a channel at the bottom of the hole.Type: GrantFiled: March 3, 2003Date of Patent: August 31, 2004Inventors: Paul S. Banks, Brent C. Stuart, Michael D. Perry
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Patent number: 6664498Abstract: Methods and apparatus for material modification using laser bursts including appropriately timed laser pulses to enhance material modification. In one implementation, a method for material modification comprises the steps of: providing bursts of laser pulses, wherein each burst comprises at least two laser pulses, wherein each laser pulse has a pulse duration within a range of between approximately 10 ps and 100 ns, wherein a time between each laser pulse of each burst is within a range of between approximately 5 ns and 5 &mgr;s; a time between successive bursts is greater than the time between each laser pulse comprising each burst; and directing the bursts upon a workpiece, wherein an intensity of a primary laser pulse of each burst exceeds a damage threshold of the workpiece.Type: GrantFiled: April 10, 2002Date of Patent: December 16, 2003Assignee: General AtomicsInventors: Andrew C. Forsman, Paul S. Banks, Michael D. Perry
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Publication number: 20030183603Abstract: Methods and apparatus for material modification using laser bursts including appropriately timed laser pulses to enhance material modification. In one implementation, a method for material modification comprises the steps of: providing bursts of laser pulses, wherein each burst comprises at least two laser pulses, wherein each laser pulse has a pulse duration within a range of between approximately 10 ps and 100 ns, wherein a time between each laser pulse of each burst is within a range of between approximately 5 ns and 5 &mgr;s; a time between successive bursts is greater than the time between each laser pulse comprising each burst; and directing the bursts upon a workpiece, wherein an intensity of a primary laser pulse of each burst exceeds a damage threshold of the workpiece.Type: ApplicationFiled: April 10, 2002Publication date: October 2, 2003Inventors: Andrew C. Forsman, Paul S. Banks, Michael D. Perry
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Publication number: 20030161365Abstract: A laser device which may be used as an oscillator or amplifier comprising a chamber having a volume formed therein and a gain medium within the volume. The gain medium comprises solid-state elements containing active laser ion distributed within the volume. A cooling fluid flows about the solid-state elements and a semiconductor laser diode provides optical pump radiation into the volume of the laser chamber such that laser emission from the device passes through the gain medium and the fluid. The laser device provides the advantages of a solid-state gain medium laser (e.g., diode-pumping, high power density, etc), but enables operation at higher average power and beam quality than would be achievable from a pure solid-state medium.Type: ApplicationFiled: November 21, 2002Publication date: August 28, 2003Applicant: General AtomicsInventors: Michael D. Perry, Paul S. Banks, Jason Zweiback, Robert W. Schleicher
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Publication number: 20020191662Abstract: A solid-state laser device consists of a gain medium in the shape of a polyhedron. A beam enters the gain medium at one surface of the polyhedron and is reflected internally at one or more surfaces with each reflection occurring in approximate the same plane as the plane of incidence of the incident beam. The beam enters and exits the gain medium at different locations. Pump radiation enters the polyhedron through one or more faces. The laser device may be used as the gain medium for a laser oscillator or a laser amplifier. In one variation, the polyhedron contains an internal core section in which there is no gain material. In another variation, the gain medium further includes one or more surfaces oriented to achieve a 90 degree internal reflection of the beam.Type: ApplicationFiled: March 7, 2001Publication date: December 19, 2002Applicant: General AtomicsInventors: Michael D. Perry, Paul S. Banks
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Patent number: 6372103Abstract: Short pulse PLD is a viable technique of producing high quality films with properties very close to that of crystalline diamond. The plasma generated using femtosecond lasers is composed of single atom ions with no clusters producing films with high Sp3/Sp2 ratios. Using a high average power femtosecond laser system, the present invention dramatically increases deposition rates to up to 25 &mgr;m/hr (which exceeds many CVD processes) while growing particulate-free films. In the present invention, deposition rates is a function of laser wavelength, laser fluence, laser spot size, and target/substrate separation. The relevant laser parameters are shown to ensure particulate-free growth, and characterizations of the films grown are made using several diagnostic techniques including electron energy loss spectroscopy (EELS) and Raman spectroscopy.Type: GrantFiled: May 10, 2000Date of Patent: April 16, 2002Assignee: The Regents of the University of CaliforniaInventors: Michael D. Perry, Paul S. Banks, Brent C. Stuart
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Patent number: 6303901Abstract: The present invention is a method for penetrating a workpiece using an ultra-short pulse laser beam without causing damage to subsequent surfaces facing the laser. Several embodiments are shown which place holes in fuel injectors without damaging the back surface of the sack in which the fuel is ejected. In one embodiment, pulses from an ultra short pulse laser remove about 10 nm to 1000 nm of material per pulse. In one embodiment, a plasma source is attached to the fuel injector and initiated by common methods such as microwave energy. In another embodiment of the invention, the sack void is filled with a solid. In one other embodiment, a high viscosity liquid is placed within the sack. In general, high-viscosity liquids preferably used in this invention should have a high damage threshold and have a diffusing property.Type: GrantFiled: April 21, 2000Date of Patent: October 16, 2001Assignee: The Regents of the University of CaliforniaInventors: Michael D. Perry, Paul S. Banks, Brent C. Stuart
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Patent number: 6150630Abstract: The invention consists of a method for machining (cutting, drilling, sculpting) of explosives (e.g., TNT, TATB, PETN, RDX, etc.). By using pulses of a duration in the range of 5 femtoseconds to 50 picoseconds, extremely precise and rapid machining can be achieved with essentially no heat or shock affected zone. In this method, material is removed by a nonthermal mechanism. A combination of multiphoton and collisional ionization creates a critical density plasma in a time scale much shorter than electron kinetic energy is transferred to the lattice. The resulting plasma is far from thermal equilibrium. The material is in essence converted from its initial solid-state directly into a fully ionized plasma on a time scale too short for thermal equilibrium to be established with the lattice. As a result, there is negligible heat conduction beyond the region removed resulting in negligible thermal stress or shock to the material beyond a few microns from the laser machined surface.Type: GrantFiled: April 17, 1998Date of Patent: November 21, 2000Assignee: The Regents of the University of CaliforniaInventors: Michael D. Perry, Brent C. Stuart, Paul S. Banks, Booth R. Myers, Joseph A. Sefcik
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Patent number: 5960016Abstract: An all-reflective pulse stretcher for laser systems employing chirped-pulse amplification enables on-axis use of the focusing mirror which results in ease of use, significantly decreased sensitivity to alignment and near aberration-free performance. By using a new type of diffraction grating which contains a mirror incorporated into the grating, the stretcher contains only three elements: 1) the grating, 2) a spherical or parabolic focusing mirror, and 3) a flat mirror. Addition of a fourth component, a retro-reflector, enables multiple passes of the same stretcher resulting in stretching ratios beyond the current state of the art in a simple and compact design. The pulse stretcher has been used to stretch pulses from 20 fsec to over 600 psec (a stretching ratio in excess of 30,000).Type: GrantFiled: June 5, 1997Date of Patent: September 28, 1999Assignee: The Regents of the University of CaliforniaInventors: Michael D. Perry, Paul S. Banks, Brent C. Stuart, Scott N. Fochs