Patents by Inventor Steven J. Byrnes

Steven J. Byrnes 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).

  • Publication number: 20210349186
    Abstract: A LiDAR system emits single mode light from a photonic integrated circuit (PIC) and is capable of receiving a different mode light, or multiple modes of light, into the PIC. Objects in the LiDAR's field of view may reflect light with a mode different from the mode of the light that illuminated the objects. Thus, in some embodiments, a single-mode optical waveguide, a single-mode-multi-mode optical junction, a multi-mode optical waveguide and an array of optical emitters on the PIC are configured to emit into free space light of a single mode from each optical emitter of the array of optical emitters. The multi-mode optical waveguide and the array of optical emitters are configured to receive from the free space light of a mode different from the single mode, or multiple modes, and to couple the light of the different mode or multiple modes into the multi-mode optical waveguide.
    Type: Application
    Filed: May 5, 2021
    Publication date: November 11, 2021
    Inventors: Steven J. Byrnes, Michael G. Moebius, Steven J. Spector
  • Publication number: 20210341585
    Abstract: A LiDAR system includes a light source and an arrayed micro-optic configured to receive light from the light source so as to produce and project a two-dimensional array of light spots on a scene. The LiDAR system also includes receiver optics having an array of optical detection sites configured so as to be suitable for establishing a one-to-one correspondence between light spots in the two-dimensional array and optical detection sites in the receiver optics. The LiDAR system further includes a birefringent prism and a lens. The LiDAR system may also include a mask placed in the light path between the birefringent prism and the receiver optics. Alternatively, the LiDAR system may include a controller programmed to activate or deactivate each optical detection site.
    Type: Application
    Filed: May 1, 2020
    Publication date: November 4, 2021
    Inventors: Michael G. Moebius, Lucas D. Benney, Steven J. Spector, Steven J. Byrnes
  • Patent number: 11119383
    Abstract: Acousto-optical modulators, such as a SAW modulators, with telescope arrays and superimposed volume gratings for light field generation are disclosed. These devices can employ pixelated demagnification and have layers of output optics, such as reflective gratings and/or arrays of transmissive refractive or diffractive lenses that manipulate the light emitted by the SAW modulator. In other cases, superimposed volume gratings are used, in which pixilation occurs in angle space.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: September 14, 2021
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Steven J. Byrnes, Gregg E. Favalora, Ian Ward Frank, Joseph J. Register, Michael G. Moebius
  • Patent number: 11108939
    Abstract: A method for assembling an imager assembly for a vehicular camera includes providing a lens barrel that accommodates a lens, providing a lens holder, and providing a PCB with an imager disposed thereat. A cylindrical portion of the lens barrel is disposed in a cylindrical passageway of the lens holder and the PCB is disposed at the lens holder. An adhesive is dispensed to hold the lens optically aligned with the imager. After the lens is optically aligned with the imager, the adhesive is initially cured to an initially-cured state in an initial curing process for an initial-cure time period. The adhesive is further cured to a further-cured state in a secondary curing process for a longer further-cure time period. As further cured, the further-cured adhesive maintains optical alignment of the lens with the imager for use of the imager assembly in a vehicular camera in a vehicle.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 31, 2021
    Assignee: MAGNA ELECTRONICS INC.
    Inventors: Brian J. Winden, Robert A. Devota, Matthew C. Sesti, Joseph A. Stemmer, Steven V. Byrne, John R. Garcia, David F. Olson
  • Patent number: 11092427
    Abstract: A system and method for metrology and profilometry using a light field generator are disclosed. For this purpose, a system such as an optical analysis system scans a sample using light, and detects light reflected off a sample in various ways. The system operates different operational modes including a backscatter intensity, a triangulation, and an interferometric mode. For this purpose, the optical analysis system includes one or more optical angle modulation systems, such as surface acoustic wave (SAW) modulators, that emit light, a sample holder, and a scanning system that scans the one or more SAW modulators relative to the sample holder. The system performs tomographic reconstructions of information generated by the scans to create 3D maps/volume datasets of the sample.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: August 17, 2021
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Steven J. Byrnes, Jeffrey A. Korn, Gregg E. Favalora, Juha-Pekka J. Laine, Michael G. Moebius
  • Publication number: 20210231780
    Abstract: A LiDAR system includes a light source and an arrayed micro-optic configured to receive light from the light source so as to produce and project a two-dimensional array of light spots on a scene. The LiDAR system also includes receiver optics having an array of optical detection sites configured so as to be suitable for establishing a one-to-one correspondence between light spots in the two-dimensional array and optical detection sites in the receiver optics. The LiDAR system further includes a beamsplitter and a lens. The LiDAR system may also include a mask placed in the light path between the beamsplitter and the receiver optics. Alternatively, the LiDAR system may include a controller programmed to activate or deactivate each optical detection site.
    Type: Application
    Filed: January 27, 2020
    Publication date: July 29, 2021
    Inventors: Michael G. Moebius, Lucas D. Benney, Steven J. Spector, Steven J. Byrnes
  • Patent number: 11054676
    Abstract: A system and method for improving spatial light modulator (SLM) devices such as Surface Acoustic Wave (SAW) modulators are disclosed. The SAW modulators can improved angular bandwidth and suppress unwanted diffractive orders. In one example, a coating layer(s) is applied to a proximal face of the SAW modulator to improve coupling of guided modes into leaky modes. Additionally, applying coating layers(s) such as a hybrid anti-reflective/highly reflective coating to an exit face of the SAW modulator can suppress transmission of undesired diffractive order(s).
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: July 6, 2021
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Ian Ward Frank, Jeffrey A. Korn, Steven J. Byrnes, Dennis M. Callahan, Jr.
  • Publication number: 20210119410
    Abstract: A grating emitter method and system for modulating the polarization of an optical beam, such as one for transmission through free-space or use in an atomic clock.
    Type: Application
    Filed: October 21, 2020
    Publication date: April 22, 2021
    Inventors: Steven J. Spector, Steven J. Byrnes, Robert Lutwak
  • Patent number: 10935868
    Abstract: A light steeling system and method for diffractive steering of electromagnetic radiation such as visible light is disclosed. Embodiments of the light steering system include leaky-mode SAW modulators as light modulator devices. The SAW modulators preferably include reflective diffractive gratings. The gratings are mounted to/patterned upon an exit face that opposes an exit surface of the SAW modulator, in one example. Steering of light signals emitted from the SAW modulators in these systems can be accomplished by varying wavelength of light signals introduced to the SAW modulators, and/or by varying frequency of RF drive signals applied to the SAW modulators. In addition, light field generators that incorporate SAW modulators of the proposed light steering system within displays of the light field generators are also disclosed.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: March 2, 2021
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Steven J. Byrnes, Gregg E. Favalora, Ian Ward Frank, Anthony Kopa, Jeffrey A. Korn, Michael G. Moebius
  • Patent number: 10938430
    Abstract: A communication system for a hypersonic vehicle uses a distributed antenna system, an impedance matching circuit that provides impedance matching between a transmitter and/or receiver and the selected one or more antennas of the distributed antennas system and a surrounding plasma sheath, near-field probes to determine impedance of the plasma sheath adjacent to each of the probes and thus predict behavior of the respective antennas near the probes, and a control system that selectively connects a transmitter and/or receiver to one or more of the antennas based upon the antennas that are seeing the most favorable transmission or reception characteristics and controlling the impedance matching is to provide impedance matching for the selected antennas.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: March 2, 2021
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Jeffrey Korn, Steven J. Byrnes, Baturalp R. Arslan
  • Publication number: 20210033943
    Abstract: An electro-holographic light field generator device is disclosed. The light field generator device has an optical substrate with a waveguide face and an exit face. One or more surface acoustic wave (SAW) optical modulator devices are included within each light field generator device. The SAW devices each include a light input, a waveguide, and a SAW transducer, all configured for guided mode confinement of input light within the waveguide. A leaky mode deflection of a portion of the waveguided light, or diffractive light, impinges upon the exit face. Multiple output optics at the exit face are configured for developing from each of the output optics a radiated exit light from the diffracted light for at least one of the waveguides. An RF controller is configured to control the SAW devices to develop the radiated exit light as a three-dimensional output light field with horizontal parallax and compatible with observer vertical motion.
    Type: Application
    Filed: October 5, 2020
    Publication date: February 4, 2021
    Inventors: Ian W. Frank, Steven J. Byrnes, Juha-Pekka J. Laine, Gregg E. Favalora, Joseph J. Register, Dennis M. Callahan, Michael G. Moebius
  • Patent number: 10838150
    Abstract: A coupling interface arrangement is described for a photonic integrated circuit (PIC) device. The PIC includes an interface coupling surface having optical grating elements arranged to form optical output locations that produce corresponding light output beams. A coupling lens couples the light output beams into a conjugate plane at a far-field scene characterized by one or more optical aberrations that degrade optical resolution of the light outputs. The optical grating elements are configured to correct for the one or more optical aberrations.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 17, 2020
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Michael G. Moebius, Steven J. Byrnes, Steven J. Spector, Francis J. Rogomentich, Matthew A. Sinclair
  • Patent number: 10795235
    Abstract: An electro-holographic light field generator device is disclosed. The light field generator device has an optical substrate with a waveguide face and an exit face. One or more surface acoustic wave (SAW) optical modulator devices are included within each light field generator device. The SAW devices each include a light input, a waveguide, and a SAW transducer, all configured for guided mode confinement of input light within the waveguide. A leaky mode deflection of a portion of the waveguided light, or diffractive light, impinges upon the exit face. Multiple output optics at the exit face are configured for developing from each of the output optics a radiated exit light from the diffracted light for at least one of the waveguides. An RF controller is configured to control the SAW devices to develop the radiated exit light as a three-dimensional output light field with horizontal parallax and compatible with observer vertical motion.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: October 6, 2020
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Ian W. Frank, Steven J. Byrnes, Juha-Pekka J. Laine, Gregg E. Favalora, Joseph J. Register, Dennis M. Callahan, Michael G. Moebius
  • Publication number: 20200150241
    Abstract: A LiDAR system has a field of view and includes a polarization-based waveguide splitter. The splitter includes a first splitter port, a second splitter port and a common splitter port. A laser is optically coupled to the first splitter port via a single-polarization waveguide. An objective lens optically couples each optical emitter of an array of optical emitters to a respective unique portion of the field of view. An optical switching network is coupled via respective dual-polarization waveguides between the common splitter port and the array of optical emitters. An optical receiver is optically coupled to the second splitter port via a dual-polarization waveguide and is configured to receive light reflected from the field of view. A controller, coupled to the optical switching network, is configured to cause the optical switching network to route light from the laser to a sequence of the optical emitters according to a temporal pattern.
    Type: Application
    Filed: November 8, 2019
    Publication date: May 14, 2020
    Inventors: Steven J. Byrnes, Steven J. Spector, Michael G. Moebius
  • Publication number: 20200132849
    Abstract: A LiDAR system includes an array of optical emitters, an objective lens optically coupling each optical emitter to a respective unique portion of a field of view, an optical switching network coupled between a laser and the array of optical emitters and a controller coupled to the optical switching network and configured to cause the optical switching network to route light from the laser to a sequence of the optical emitters according to a dynamically varying temporal pattern and to vary the temporal pattern based at least in part on distance to an object within the field of view. The LiDAR system scans different portions of the field of view differently, such as with different laser power levels, different revisit rates and/or different scan patterns, for example based on likelihood of detecting objects of interest in the various portions or based on likely relative importance of objects likely to be found in the various portions.
    Type: Application
    Filed: October 25, 2019
    Publication date: April 30, 2020
    Inventors: Michael G. Moebius, Steven J. Spector, Steven J. Byrnes, Christopher Bessette, Scott Evan Lennox
  • Publication number: 20200136340
    Abstract: A LiDAR system includes an array of optical emitters, an objective lens optically coupling each optical emitter to a respective unique portion of a field of view, an optical switching network coupled between a laser and the array of optical emitters and a controller coupled to the optical switching network and configured to cause the optical switching network to route light from the laser to a sequence of the optical emitters according to a dynamically varying temporal pattern and to vary the temporal pattern in a way that reduces risk of eye injury from the laser light.
    Type: Application
    Filed: October 25, 2019
    Publication date: April 30, 2020
    Inventors: Michael G. Moebius, Steven J. Spector, Steven J. Byrnes, Christopher Bessette, Scott Evan Lennox, Matthew A. Sinclair, Francis J. Rogomentich
  • Publication number: 20200096315
    Abstract: A system and method for metrology and profilometry using a light field generator are disclosed. For this purpose, a system such as an optical analysis system scans a sample using light, and detects light reflected off a sample in various ways. The system operates different operational modes including a backscatter intensity, a triangulation, and an interferometric mode. For this purpose, the optical analysis system includes one or more optical angle modulation systems, such as surface acoustic wave (SAW) modulators, that emit light, a sample holder, and a scanning system that scans the one or more SAW modulators relative to the sample holder. The system performs tomographic reconstructions of information generated by the scans to create 3D maps/volume datasets of the sample.
    Type: Application
    Filed: September 25, 2018
    Publication date: March 26, 2020
    Inventors: Steven J. Byrnes, Jeffrey A. Korn, Gregg E. Favalora, Juha-Pekka J. Laine, Michael G. Moebius
  • Publication number: 20200020501
    Abstract: A chip scale encapsulated vacuum field emission device integrated circuit and method of fabrication therefor are disclosed. The vacuum field emission device is a monolithically fabricated triode vacuum field emission device, also known as a VACFET device. The VACFET device includes a substrate, a VACFET formed laterally on the substrate, and a containment shell that seals around a periphery of the VACFET and against the substrate. Preferably, the VACFET of the VACFET device includes an anode and a cathode formed on the substrate, a bottom gate and a top gate. The bottom gate is located between the anode and the cathode and the substrate, and the top gate is located above the anode and the cathode with respect to the substrate.
    Type: Application
    Filed: July 13, 2018
    Publication date: January 16, 2020
    Inventors: Jonathan J. Bernstein, Peter Q. Miraglia, Daniel Freeman, Steven J. Byrnes
  • Publication number: 20190354871
    Abstract: A parallelized chain-synthesizing technique includes capillary tubes, where each tube provides multiple locations or addresses where a specific arbitrary sequence for polymeric chains can be synthesized. An optical addressing system selectively delivers light to the locations to mediate or control reactions in the tubes.
    Type: Application
    Filed: May 17, 2019
    Publication date: November 21, 2019
    Inventors: Kirsty A. McFarland, Andrew P. Magyar, Ian Ward Frank, Kenneth T. Kotz, Stacey Markovic, Haiyao Huang, Steven J. Byrnes, Gregg E. Favalora, Melissa M. Sprachman, Ryan A. Dubay, Emma Vargo, Peter Cavanagh, Erin Rosenberger
  • Publication number: 20190312607
    Abstract: A communication system for a hypersonic vehicle uses a distributed antenna system, an impedance matching circuit that provides impedance matching between a transmitter and/or receiver and the selected one or more antennas of the distributed antennas system and a surrounding plasma sheath, near-field probes to determine impedance of the plasma sheath adjacent to each of the probes and thus predict behavior of the respective antennas near the probes, and a control system that selectively connects a transmitter and/or receiver to one or more of the antennas based upon the antennas that are seeing the most favorable transmission or reception characteristics and controlling the impedance matching is to provide impedance matching for the selected antennas.
    Type: Application
    Filed: April 5, 2019
    Publication date: October 10, 2019
    Inventors: Jeffrey Korn, Steven J. Byrnes, Baturalp R. Arslan