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).
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Patent number: 11966059Abstract: 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: GrantFiled: October 7, 2022Date of Patent: April 23, 2024Assignee: MAGIC LEAP, INC.Inventors: William Hudson Welch, Paul M. Greco, Rony Abovitz, Yonatan Munk, Samuel A. Miller
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Publication number: 20240126086Abstract: 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: ApplicationFiled: December 22, 2023Publication date: April 18, 2024Inventors: Lionel Ernest Edwin, Ivan Li Chuen Yeoh, Samuel A. Miller, Edwin Joseph Selker, Adam Charles Carlson, Bjorn Nicolaas Servatius Vlaskamp, Paul M. Greco
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Patent number: 11892636Abstract: 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: GrantFiled: July 15, 2021Date of Patent: February 6, 2024Assignee: 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
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Publication number: 20240012190Abstract: 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: ApplicationFiled: September 22, 2023Publication date: January 11, 2024Applicant: 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
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Patent number: 11822112Abstract: 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: GrantFiled: June 6, 2022Date of Patent: November 21, 2023Assignee: 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
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Publication number: 20230324590Abstract: 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: ApplicationFiled: June 14, 2023Publication date: October 12, 2023Applicant: Magic Leap, Inc.Inventors: Robert D. TEKOLSTE, Michael Anthony KLUG, Paul M. GRECO, Brian T. SCHOWENGERDT
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Publication number: 20230281988Abstract: 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: ApplicationFiled: May 11, 2023Publication date: September 7, 2023Inventors: Carlos Julio Suate Pedroza, Todd Daniel Hendry, Guillermo Padin Rohena, Paul M. Greco, Vinosh Christopher Diptee, Evan Francis Rynk
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Patent number: 11741992Abstract: 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: GrantFiled: July 31, 2019Date of Patent: August 29, 2023Assignee: International Business Machines CorporationInventors: 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
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Patent number: 11726241Abstract: 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: GrantFiled: April 25, 2022Date of Patent: August 15, 2023Assignee: Magic Leap, Inc.Inventors: Robert D. Tekolste, Michael Anthony Klug, Paul M. Greco, Brian T. Schowengerdt
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Patent number: 11694435Abstract: 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: GrantFiled: June 18, 2019Date of Patent: July 4, 2023Assignee: MAGIC LEAP, INC.Inventors: Carlos Julio Suate Pedroza, Todd Daniel Hendry, Guillermo Padin Rohena, Paul M. Greco, Vinosh Christopher Diptee, Evan Francis Rynk
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Patent number: 11656663Abstract: 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: GrantFiled: December 4, 2020Date of Patent: May 23, 2023Assignee: MAGIC LEAP, INC.Inventors: Michael Janusz Woods, Paul M. Greco
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Patent number: 11620785Abstract: 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: GrantFiled: November 22, 2021Date of Patent: April 4, 2023Assignee: Magic Leap, Inc.Inventor: Paul M. Greco
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Patent number: 11614626Abstract: 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: GrantFiled: August 30, 2021Date of Patent: March 28, 2023Assignee: Magic Leap, Inc.Inventors: Samuel A. Miller, Paul M. Greco, Brian T. Schowengerdt
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Publication number: 20230055420Abstract: 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: ApplicationFiled: October 17, 2022Publication date: February 23, 2023Applicant: Magic Leap, Inc.Inventors: Robert D. TEKOLSTE, Michael A. KLUG, Paul M. GRECO, Brian T. SCHOWENGERDT
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Publication number: 20230037046Abstract: 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: ApplicationFiled: October 7, 2022Publication date: February 2, 2023Inventors: 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
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Publication number: 20230032100Abstract: 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: ApplicationFiled: October 7, 2022Publication date: February 2, 2023Inventors: William Hudson Welch, Paul M. Greco, Rony Abovitz, Yonatan Munk, Samuel A. Miller
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Publication number: 20220381969Abstract: 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: ApplicationFiled: June 6, 2022Publication date: December 1, 2022Applicant: 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
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Patent number: 11487121Abstract: 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: GrantFiled: March 23, 2021Date of Patent: November 1, 2022Assignee: Magic Leap, Inc.Inventors: Robert D. Tekolste, Michael A. Klug, Paul M. Greco, Brian T. Schowengerdt
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Patent number: 11467408Abstract: 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: GrantFiled: June 17, 2020Date of Patent: October 11, 2022Assignee: Magic Leap, Inc.Inventors: William Hudson Welch, Paul M. Greco, Rony Abovitz, Yonatan Munk, Samuel A. Miller
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Patent number: 11468640Abstract: 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: GrantFiled: August 2, 2019Date of Patent: October 11, 2022Assignee: 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