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).

  • 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
  • Patent number: 11694435
    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: June 18, 2019
    Date of Patent: July 4, 2023
    Assignee: MAGIC LEAP, INC.
    Inventors: Carlos Julio Suate Pedroza, Todd Daniel Hendry, Guillermo Padin Rohena, Paul M. Greco, Vinosh Christopher Diptee, Evan Francis Rynk
  • Patent number: 11656663
    Abstract: In various embodiments, a wearable component configured to be worn on a head of a user is disclosed. The wearable component can comprise a wearable support and an electronic component coupled to or disposed within the wearable support. A thermal management structure can be provided in thermal communication with the electronic component. The thermal management structure can be configured to transfer heat from the electronic component away from the head of the user when the wearable support is disposed on the head of the user.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: May 23, 2023
    Assignee: MAGIC LEAP, INC.
    Inventors: Michael Janusz Woods, Paul M. Greco
  • Patent number: 11620785
    Abstract: Disclosed is a method of localizing a user operating a plurality of sensing components, preferably in an augmented or mixed reality environment, the method comprising transmitting pose data from a fixed control and processing module and receiving the pose data at a first sensing component, the pose data is then transformed into a first component relative pose in a coordinate frame based on the control and processing module. A display unit in communication with the first sensing component is updated with the transformed first component relative pose to render virtual content with improved environmental awareness.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: April 4, 2023
    Assignee: Magic Leap, Inc.
    Inventor: Paul M. Greco
  • Patent number: 11614626
    Abstract: An augmented reality display system includes a pair of variable focus lens elements that sandwich a waveguide stack. One of the lens elements is positioned between the waveguide stack and a user's eye to correct for refractive errors in the focusing of light projected from the waveguide stack to that eye. The lens elements may also be configured to provide appropriate optical power to place displayed virtual content on a desired depth plane. The other lens element is between the ambient environment and the waveguide stack, and is configured to provide optical power to compensate for aberrations in the transmission of ambient light through the waveguide stack and the lens element closest to the eye. In addition, an eye-tracking system monitors the vergence of the user's eyes and automatically and continuously adjusts the optical powers of the pair of lens elements based on the determined vergence of those eyes.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: March 28, 2023
    Assignee: Magic Leap, Inc.
    Inventors: Samuel A. Miller, Paul M. Greco, Brian T. Schowengerdt
  • Publication number: 20230055420
    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: October 17, 2022
    Publication date: February 23, 2023
    Applicant: Magic Leap, Inc.
    Inventors: Robert D. TEKOLSTE, Michael A. KLUG, Paul M. GRECO, Brian T. SCHOWENGERDT
  • Publication number: 20230037046
    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: Application
    Filed: October 7, 2022
    Publication date: February 2, 2023
    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
  • Publication number: 20230032100
    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: Application
    Filed: October 7, 2022
    Publication date: February 2, 2023
    Inventors: William Hudson Welch, Paul M. Greco, Rony Abovitz, Yonatan Munk, Samuel A. Miller
  • Publication number: 20220381969
    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: Application
    Filed: June 6, 2022
    Publication date: December 1, 2022
    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: 11487121
    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: March 23, 2021
    Date of Patent: November 1, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Robert D. Tekolste, Michael A. Klug, Paul M. Greco, Brian T. Schowengerdt
  • Patent number: 11467408
    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: June 17, 2020
    Date of Patent: October 11, 2022
    Assignee: Magic Leap, Inc.
    Inventors: William Hudson Welch, Paul M. Greco, Rony Abovitz, Yonatan Munk, Samuel A. Miller
  • Patent number: 11468640
    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: August 2, 2019
    Date of Patent: October 11, 2022
    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: 11428859
    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: February 21, 2020
    Date of Patent: August 30, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Kevin Curtis, Hui-Chuan Cheng, Paul M. Greco, William Hudson Welch, Eric C. Browy, Miller Schuck, Bradley Jay Sissom
  • Publication number: 20220244439
    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: April 25, 2022
    Publication date: August 4, 2022
    Applicant: Magic Leap, Inc.
    Inventors: Robert D. TEKOLSTE, Michael Anthony KLUG, Paul M. GRECO, Brian T. SCHOWENGERDT