Patents by Inventor Paul M. Greco

Paul M. Greco 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: 20250067919
    Abstract: A device for viewing a projected image includes an input coupling grating operable to receive light related to the projected image from a light source and an expansion grating having a first grating structure characterized by a first set of grating parameters varying in one or more dimensions. The expansion grating structure is operable to receive light from the input coupling grating and to multiply the light related to the projected image. The device also includes an output coupling grating having a second grating structure characterized by a second set of grating parameters and operable to output the multiplied light in a predetermined direction.
    Type: Application
    Filed: November 7, 2024
    Publication date: February 27, 2025
    Applicant: Magic Leap, Inc.
    Inventors: Kevin Richard Curtis, Hui-Chuan Cheng, Paul M. Greco, William Hudson Welch, Eric C. Browy, Miller Harry Schuck, III, Bradley Jay Sissom
  • Publication number: 20250022271
    Abstract: Systems and methods of disabling user control interfaces during attachment of a wearable electronic device to a portion of a user's clothing or accessory are disclosed. The wearable electronic device can include inertial measurement units (IMUs), optical sources, optical sensors or electromagnetic sensors. Based on the information provided by the IMUs, optical sources, optical sensors or electromagnetic sensors, an electrical processing and control system can make a determination that the electronic device is being grasped and picked up for attaching to a portion of a user's clothing or accessory or that the electronic device is in the process of being attached to a portion of a user's clothing or accessory and temporarily disable one or more user control interfaces disposed on the outside of the wearable electronic device.
    Type: Application
    Filed: September 27, 2024
    Publication date: January 16, 2025
    Inventors: Carlos Julio Suate Pedroza, Todd Daniel Hendry, Guillermo Padin Rohena, Paul M. Greco, Vinosh Christopher Diptee, Evan Francis Rynk
  • Publication number: 20240418997
    Abstract: Disclosed is an improved diffraction structure for 3D display systems. The improved diffraction structure includes an intermediate layer that resides between a waveguide substrate and a top grating surface. The top grating surface comprises a first material that corresponds to a first refractive index value, the underlayer comprises a second material that corresponds to a second refractive index value, and the substrate comprises a third material that corresponds to a third refractive index value.
    Type: Application
    Filed: August 23, 2024
    Publication date: December 19, 2024
    Applicant: Magic Leap, Inc.
    Inventors: Robert D. TEKOLSTE, Michael A. KLUG, Paul M. GRECO, Brian T. SCHOWENGERDT
  • Patent number: 12164134
    Abstract: A method of reducing optical artifacts includes injecting a light beam generated by an illumination source into a polarizing beam splitter (PBS), reflecting a spatially defined portion of the light beam from a display panel, reflecting, at an interface in the PBS, the spatially defined portion of the light beam towards a projector lens, passing at least a portion of the spatially defined portion of the light beam through a circular polarizer disposed between the PBS and the projector lens, reflecting, by one or more elements of the projector lens, a return portion of the spatially defined portion of the light beam, and attenuating, at the circular polarizer, the return portion of the spatially defined portion of the light beam.
    Type: Grant
    Filed: September 22, 2023
    Date of Patent: December 10, 2024
    Assignee: Magic Leap, Inc.
    Inventors: Kevin Richard Curtis, Hui-Chuan Cheng, Paul M. Greco, William Hudson Welch, Eric C. Browy, Miller Harry Schuck, III, Bradley Jay Sissom
  • Patent number: 12131534
    Abstract: Systems and methods of disabling user control interfaces during attachment of a wearable electronic device to a portion of a user's clothing or accessory are disclosed. The wearable electronic device can include inertial measurement units (IMUs), optical sources, optical sensors or electromagnetic sensors. Based on the information provided by the IMUs, optical sources, optical sensors or electromagnetic sensors, an electrical processing and control system can make a determination that the electronic device is being grasped and picked up for attaching to a portion of a user's clothing or accessory or that the electronic device is in the process of being attached to a portion of a user's clothing or accessory and temporarily disable one or more user control interfaces disposed on the outside of the wearable electronic device.
    Type: Grant
    Filed: May 11, 2023
    Date of Patent: October 29, 2024
    Assignee: MAGIC LEAP, INC.
    Inventors: Carlos Julio Suate Pedroza, Todd Daniel Hendry, Guillermo Padin Rohena, Paul M. Greco, Vinosh Christopher Diptee, Evan Francis Rynk
  • Publication number: 20240353678
    Abstract: An eyepiece for projecting an image to a viewer includes a substrate positioned in a substrate lateral plane and a set of color filters disposed on the substrate. The set of color filters comprise a first color filter disposed at a first lateral position and operable to pass a first wavelength range, a second color filter disposed at a second lateral position and operable to pass a second wavelength range, and a third color filter disposed at a third lateral position and operable to pass a third wavelength range. The eyepiece further includes a first planar waveguide positioned in a first lateral plane adjacent the substrate lateral plane, a second planar waveguide positioned in a second lateral plane adjacent to the first lateral plane, and a third planar waveguide positioned in a third lateral plane adjacent to the second lateral plane.
    Type: Application
    Filed: July 3, 2024
    Publication date: October 24, 2024
    Applicant: Magic Leap, Inc.
    Inventors: Miller Harry Schuck, III, Kevin Richard Curtis, Hui-Chuan Cheng, Bradley Jay Sissom, Paul M. Greco, William Hudson Welch, Eric C. Browy
  • Patent number: 12099193
    Abstract: Disclosed is an improved diffraction structure for 3D display systems. The improved diffraction structure includes an intermediate layer that resides between a waveguide substrate and a top grating surface. The top grating surface comprises a first material that corresponds to a first refractive index value, the underlayer comprises a second material that corresponds to a second refractive index value, and the substrate comprises a third material that corresponds to a third refractive index value.
    Type: Grant
    Filed: October 17, 2022
    Date of Patent: September 24, 2024
    Assignee: Magic Leap, Inc.
    Inventors: Robert D. Tekolste, Michael A. Klug, Paul M. Greco, Brian T. Schowengerdt
  • Publication number: 20240290053
    Abstract: A display system includes a head-mounted display configured to project light, having different amounts of wavefront divergence, to an eye of a user to display virtual image content appearing to be disposed at different depth planes. The wavefront divergence may be changed in discrete steps, with the change in steps being triggered based upon whether the user is fixating on a particular depth plane. The display system may be calibrated for switching depth planes for a main user. Upon determining that a guest user is utilizing the system, rather than undergoing a full calibration, the display system may be configured to switch depth planes based on a rough determination of the virtual content that the user is looking at. The virtual content may have an associated depth plane and the display system may be configured to switch to the depth plane of that virtual content.
    Type: Application
    Filed: May 8, 2024
    Publication date: August 29, 2024
    Inventors: Samuel A. MILLER, Lomesh AGARWAL, Lionel Ernest EDWIN, Ivan Li Chuen YEOH, Daniel FARMER, Sergey Fyodorovich PROKUSHKIN, Yonatan MUNK, Edwin Joseph SELKER, Erik FONSEKA, Paul M. GRECO, Jeffrey Scott SOMMERS, Bradley Vincent STUART, Shiuli DAS, Suraj Manjunath SHANBHAG
  • Patent number: 12066622
    Abstract: An eyepiece for projecting an image includes a first planar waveguide positioned in a first lateral plane. The first planar waveguide comprises a first diffractive optical element (DOE) disposed at a first lateral position. The eyepiece also includes a second planar waveguide positioned in a second lateral plane adjacent to the first lateral plane. The second planar waveguide comprises a second DOE disposed at a second lateral position different from the first lateral position. The eyepiece further includes a third planar waveguide positioned in a third lateral plane adjacent to the second lateral plane. The third planar waveguide comprises a third DOE disposed at a third lateral position different from the first lateral position and the second lateral position. The eyepiece also includes an optical filter positioned between the second planar waveguide and the third planar waveguide. The optical filter is disposed at the third lateral position.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: August 20, 2024
    Assignee: Magic Leap, Inc.
    Inventors: Miller Harry Schuck, III, Kevin Richard Curtis, Hui-Chuan Cheng, Bradley Jay Sissom, Paul M. Greco, William Hudson Welch, Eric C. Browy
  • Publication number: 20240264446
    Abstract: Methods and systems are disclosed for presenting virtual objects on a limited number of depth planes using, e.g., an augmented reality display system. A farthest one of the depth planes is within a mismatch tolerance of optical infinity. The display system may switch the depth plane on which content is actively displayed so that the content is displayed on the depth plane on which a user is fixating. The impact of errors in fixation tracking is addressed using partially overlapping depth planes. A fixation depth is determined and the display system determines whether to adjust selection of a selected depth plane at which a virtual object is presented. The determination may be based on whether the fixation depth falls within a depth overlap region of adjacent depth planes. The display system may switch the active depth plane depending upon whether the fixation depth falls outside the overlap region.
    Type: Application
    Filed: March 20, 2024
    Publication date: August 8, 2024
    Inventors: William Hudson Welch, Paul M. Greco, Rony Abovitz, Yonatan Munk, Samuel A. Miller
  • Patent number: 12008723
    Abstract: A display system includes a head-mounted display configured to project light, having different amounts of wavefront divergence, to an eye of a user to display virtual image content appearing to be disposed at different depth planes. The wavefront divergence may be changed in discrete steps, with the change in steps being triggered based upon whether the user is fixating on a particular depth plane. The display system may be calibrated for switching depth planes for a main user. Upon determining that a guest user is utilizing the system, rather than undergoing a full calibration, the display system may be configured to switch depth planes based on a rough determination of the virtual content that the user is looking at. The virtual content has an associated depth plane and the display system may be configured to switch to the depth plane of that virtual content.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: June 11, 2024
    Assignee: Magic Leap, Inc.
    Inventors: Samuel A. Miller, Lomesh Agarwal, Lionel Ernest Edwin, Ivan Li Chuen Yeoh, Daniel Farmer, Sergey Fyodorovich Prokushkin, Yonatan Munk, Edwin Joseph Selker, Erik Fonseka, Paul M. Greco, Jeffrey Scott Sommers, Bradley Vincent Stuart, Shiuli Das, Suraj Manjunath Shanbhag
  • Patent number: 11966059
    Abstract: Methods and systems are disclosed for presenting virtual objects on a limited number of depth planes using, e.g., an augmented reality display system. A farthest one of the depth planes is within a mismatch tolerance of optical infinity. The display system may switch the depth plane on which content is actively displayed, so that the content is displayed on the depth plane on which a user is fixating. The impact of errors in fixation tracking is addressed using partially overlapping depth planes. A fixation depth at which a user is fixating is determined and the display system determines whether to adjust selection of a selected depth plane at which a virtual object is presented. The determination may be based on whether the fixation depth falls within a depth overlap region of adjacent depth planes. The display system may switch the active depth plane depending upon whether the fixation depth falls outside the overlap region.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: April 23, 2024
    Assignee: MAGIC LEAP, INC.
    Inventors: William Hudson Welch, Paul M. Greco, Rony Abovitz, Yonatan Munk, Samuel A. Miller
  • Publication number: 20240126086
    Abstract: Systems and methods are disclosed for operating a head-mounted display system based on user perceptibility. The display system may be an augmented reality display system configured to provide virtual content on a plurality of depth planes by presenting the content with different amounts of wavefront divergence. Some embodiments include obtaining an image captured by an imaging device of the display system. Whether a threshold measure or more of motion blur is determined to be exhibited in one or more regions of the image. Based on a determination that the threshold measure or more of motion blur is exhibited in one or more regions of the image, one or more operating parameters of the wearable display are adjusted. Example operating parameter adjustments comprise adjusting the depth plane on which content is presented (e.g., by switching from a first depth plane to a second depth plane), adjusting a rendering quality, and adjusting power characteristics of the system.
    Type: Application
    Filed: December 22, 2023
    Publication date: April 18, 2024
    Inventors: Lionel Ernest Edwin, Ivan Li Chuen Yeoh, Samuel A. Miller, Edwin Joseph Selker, Adam Charles Carlson, Bjorn Nicolaas Servatius Vlaskamp, Paul M. Greco
  • Patent number: 11892636
    Abstract: Systems and methods are disclosed for operating a head-mounted display system based on user perceptibility. The display system may be an augmented reality display system configured to provide virtual content on a plurality of depth planes by presenting the content with different amounts of wavefront divergence. Some embodiments include obtaining an image captured by an imaging device of the display system. Whether a threshold measure or more of motion blur is determined to be exhibited in one or more regions of the image. Based on a determination that the threshold measure or more of motion blur is exhibited in one or more regions of the image, one or more operating parameters of the wearable display are adjusted. Example operating parameter adjustments comprise adjusting the depth plane on which content is presented (e.g., by switching from a first depth plane to a second depth plane), adjusting a rendering quality, and adjusting power characteristics of the system.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: February 6, 2024
    Assignee: MAGIC LEAP, INC.
    Inventors: Lionel Ernest Edwin, Ivan Li Chuen Yeoh, Samuel A. Miller, Edwin Joseph Selker, Adam Charles Carlson, Bjorn Nicolaas Servatius Vlaskamp, Paul M. Greco
  • Publication number: 20240012190
    Abstract: A method of reducing optical artifacts includes injecting a light beam generated by an illumination source into a polarizing beam splitter (PBS), reflecting a spatially defined portion of the light beam from a display panel, reflecting, at an interface in the PBS, the spatially defined portion of the light beam towards a projector lens, passing at least a portion of the spatially defined portion of the light beam through a circular polarizer disposed between the PBS and the projector lens, reflecting, by one or more elements of the projector lens, a return portion of the spatially defined portion of the light beam, and attenuating, at the circular polarizer, the return portion of the spatially defined portion of the light beam.
    Type: Application
    Filed: September 22, 2023
    Publication date: January 11, 2024
    Applicant: Magic Leap, Inc.
    Inventors: Kevin Richard Curtis, Hui-Chuan Cheng, Paul M. Greco, William Hudson Welch, Eric C. Browy, Miller Harry Schuck, III, Bradley Jay Sissom
  • Patent number: 11822112
    Abstract: An artifact mitigation system includes a projector assembly and a set of imaging optics optically coupled to the projector assembly. The artifact mitigation system also includes an eyepiece optically coupled to the set of imaging optics. The eyepiece includes a diffractive incoupling interface. The artifact mitigation system further includes an artifact prevention element disposed between the set of imaging optics and the eyepiece. The artifact prevention element includes a linear polarizer, a first quarter waveplate disposed adjacent the linear polarizer, and a color select component disposed adjacent the first quarter waveplate.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: November 21, 2023
    Assignee: Magic Leap, Inc.
    Inventors: Kevin Richard Curtis, Hui-Chuan Cheng, Paul M. Greco, William Hudson Welch, Eric C. Browy, Miller Harry Schuck, III, Bradley Jay Sissom
  • Publication number: 20230324590
    Abstract: Disclosed is an improved diffraction structure for 3D display systems. The improved diffraction structure includes an intermediate layer that resides between a waveguide substrate and a top grating surface. The top grating surface comprises a first material that corresponds to a first refractive index value, the underlayer comprises a second material that corresponds to a second refractive index value, and the substrate comprises a third material that corresponds to a third refractive index value. According to additional embodiments, improved approaches are provided to implement deposition of imprint materials onto a substrate, which allow for very precise distribution and deposition of different imprint patterns onto any number of substrate surfaces.
    Type: Application
    Filed: June 14, 2023
    Publication date: October 12, 2023
    Applicant: Magic Leap, Inc.
    Inventors: Robert D. TEKOLSTE, Michael Anthony KLUG, Paul M. GRECO, Brian T. SCHOWENGERDT
  • Publication number: 20230281988
    Abstract: Systems and methods of disabling user control interfaces during attachment of a wearable electronic device to a portion of a user's clothing or accessory are disclosed. The wearable electronic device can include inertial measurement units (IMUs), optical sources, optical sensors or electromagnetic sensors. Based on the information provided by the IMUs, optical sources, optical sensors or electromagnetic sensors, an electrical processing and control system can make a determination that the electronic device is being grasped and picked up for attaching to a portion of a user's clothing or accessory or that the electronic device is in the process of being attached to a portion of a user's clothing or accessory and temporarily disable one or more user control interfaces disposed on the outside of the wearable electronic device.
    Type: Application
    Filed: May 11, 2023
    Publication date: September 7, 2023
    Inventors: Carlos Julio Suate Pedroza, Todd Daniel Hendry, Guillermo Padin Rohena, Paul M. Greco, Vinosh Christopher Diptee, Evan Francis Rynk
  • Patent number: 11741992
    Abstract: A method for characterizing a magnetic recording tape, according to one approach, includes measuring, using a magnetic head having servo readers of known pitch, a servo band difference at various locations along a length of a magnetic recording tape. The servo band difference measurements and/or derivatives thereof are stored in association with the magnetic recording tape. This procedure creates a characterization of the magnetic recording tape that is useful for assessing aging of the magnetic recording tape, as well as improving subsequent reading and/or writing operations.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: August 29, 2023
    Assignee: International Business Machines Corporation
    Inventors: Kevin B. Judd, Randy C. Inch, Eiji Ogura, Ernest S. Gale, Pamela R. Nylander-Hill, Dale A. Christiansen, Paul M. Greco, Kevin D. Butt, Steven M. Wallace
  • Patent number: 11726241
    Abstract: Disclosed is an improved diffraction structure for 3D display systems. The improved diffraction structure includes an intermediate layer that resides between a waveguide substrate and a top grating surface. The top grating surface comprises a first material that corresponds to a first refractive index value, the underlayer comprises a second material that corresponds to a second refractive index value, and the substrate comprises a third material that corresponds to a third refractive index value. According to additional embodiments, improved approaches are provided to implement deposition of imprint materials onto a substrate, which allow for very precise distribution and deposition of different imprint patterns onto any number of substrate surfaces.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: August 15, 2023
    Assignee: Magic Leap, Inc.
    Inventors: Robert D. Tekolste, Michael Anthony Klug, Paul M. Greco, Brian T. Schowengerdt