Patents by Inventor Victor Kai LIU

Victor Kai LIU 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: 20230026965
    Abstract: A plurality of waveguide display substrates, each waveguide display substrate having a cylindrical portion having a diameter and a planar surface, a curved portion opposite the planar surface defining a nonlinear change in thickness across the substrate and having a maximum height D with respect to the cylindrical portion, and a wedge portion between the cylindrical portion and the curved portion defining a linear change in thickness across the substrate and having a maximum height W with respect to the cylindrical portion. A target maximum height Dt of the curved portion is 10-7 to 10-6 times the diameter, D is between about 70% and about 130% of Dt, and W is less than about 30% of Dt.
    Type: Application
    Filed: October 7, 2022
    Publication date: January 26, 2023
    Inventors: Samarth Bhargava, Christophe Peroz, Victor Kai Liu
  • Patent number: 11536972
    Abstract: An eyepiece waveguide for an augmented reality display system includes a substrate having a first surface and a second surface and a diffractive input coupling element formed on or in the first surface or the second surface of the substrate. The diffractive input coupling element is configured to receive an input beam of light and to couple the input beam into the substrate as a guided beam. The eyepiece waveguide also includes a diffractive combined pupil expander-extractor (CPE) element formed on or in the first surface or the second surface of the substrate. The diffractive CPE element includes a first portion and a second portion divided by an axis. A first set of diffractive optical elements is disposed in the first portion and oriented at a positive angle with respect to the axis and a second set of diffractive optical elements is disposed in the second portion and oriented at a negative angle with respect to the axis.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: December 27, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Brian T. Schowengerdt, Mathew D. Watson, Brandon Michael-James Born, Samarth Bhargava, Victor Kai Liu
  • Patent number: 11500206
    Abstract: An example waveguide can include a polymer layer having substantially optically transparent material with first and second major surfaces configured such that light containing image information can propagate through the polymer layer being guided therein by reflecting from the first and second major surfaces via total internal reflection. The first surface can include first smaller and second larger surface portions monolithically integrated with the polymer layer and with each other. The first smaller surface portion can include at least a part of an in-coupling optical element configured to couple light incident on the in-coupling optical element into the polymer layer for propagation therethrough by reflection from the second major surface and the second larger surface portion of the first major surface.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: November 15, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Christophe Peroz, Victor Kai Liu, Samarth Bhargava
  • Publication number: 20220357581
    Abstract: An eyepiece waveguide for an augmented reality display system may include an optically transmissive substrate, an input coupling grating (ICG) region, a multi-directional pupil expander (MPE) region, and an exit pupil expander (EPE) region. The ICG region may receive an input beam of light and couple the input beam into the substrate as a guided beam. The MPE region may include a plurality of diffractive features which exhibit periodicity along at least a first axis of periodicity and a second axis of periodicity. The MPE region may be positioned to receive the guided beam from the ICG region and to diffract it in a plurality of directions to create a plurality of diffracted beams. The EPE region may overlap the MPE region and may out couple one or more of the diffracted beams from the optically transmissive substrate as output beams.
    Type: Application
    Filed: May 26, 2022
    Publication date: November 10, 2022
    Inventors: Samarth Bhargava, Victor Kai Liu, Kevin Messer
  • Patent number: 11487061
    Abstract: A plurality of waveguide display substrates, each waveguide display substrate having a cylindrical portion having a diameter and a planar surface, a curved portion opposite the planar surface defining a nonlinear change in thickness across the substrate and having a maximum height D with respect to the cylindrical portion, and a wedge portion between the cylindrical portion and the curved portion defining a linear change in thickness across the substrate and having a maximum height W with respect to the cylindrical portion. A target maximum height Dt of the curved portion is 10?7 to 10?6 times the diameter, D is between about 70% and about 130% of Dt, and W is less than about 30% of Dt.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: November 1, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Samarth Bhargava, Christophe Peroz, Victor Kai Liu
  • Publication number: 20220342214
    Abstract: Techniques for artifact mitigation in an optical system are disclosed. Light associated with a world object is received at the optical system, which is characterized by a world side and a user side. Light associated with a virtual image is projected onto an eyepiece of the optical system, causing a portion of the light associated with the virtual image to propagate toward the user side and light associated with an artifact image to propagate toward the world side. A dimmer of the optical system positioned between the world side and the eyepiece is adjusted to reduce an intensity of the light associated with the artifact image impinging on the dimmer and an intensity of the light associated with the world object impinging on the dimmer.
    Type: Application
    Filed: July 12, 2022
    Publication date: October 27, 2022
    Applicant: Magic Leap, Inc.
    Inventors: Kevin Richard Curtis, Samarth Bhargava, Bradley Jay Sissom, Victor Kai Liu, Chulwoo Oh, Ravi Kumar Komanduri, Kevin Messer
  • Publication number: 20220283371
    Abstract: An augmented reality device includes a projector, projector optics optically coupled to the projector, and an eyepiece optically coupled to the projector optics. The eyepiece includes an eyepiece waveguide characterized by lateral dimensions and an optical path length difference as a function of one or more of the lateral dimensions.
    Type: Application
    Filed: March 25, 2022
    Publication date: September 8, 2022
    Applicant: Magic Leap, Inc.
    Inventors: Robert D. Tekolste, Ryan Jason Ong, Victor Kai Liu, Samarth Bhargava, Christophe Peroz, Vikramjit Singh, Marlon Edward Menezes, Shuqiang Yang, Frank Y. Xu
  • Patent number: 11422364
    Abstract: Techniques for artifact mitigation in an optical system are disclosed. Light associated with a world object is received at the optical system, which is characterized by a world side and a user side. Light associated with a virtual image is projected onto an eyepiece of the optical system, causing a portion of the light associated with the virtual image to propagate toward the user side and light associated with an artifact image to propagate toward the world side. A dimmer of the optical system positioned between the world side and the eyepiece is adjusted to reduce an intensity of the light associated with the artifact image impinging on the dimmer and an intensity of the light associated with the world object impinging on the dimmer.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: August 23, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Kevin Richard Curtis, Samarth Bhargava, Bradley Jay Sissom, Victor Kai Liu, Chulwoo Oh, Ravi Kumar Komanduri, Kevin Messer
  • Patent number: 11347063
    Abstract: An eyepiece waveguide for an augmented reality display system may include an optically transmissive substrate, an input coupling grating (ICG) region, a multi-directional pupil expander (MPE) region, and an exit pupil expander (EPE) region. The ICG region may receive an input beam of light and couple the input beam into the substrate as a guided beam. The MPE region may include a plurality of diffractive features which exhibit periodicity along at least a first axis of periodicity and a second axis of periodicity. The MPE region may be positioned to receive the guided beam from the ICG region and to diffract it in a plurality of directions to create a plurality of diffracted beams. The EPE region may overlap the MPE region and may out couple one or more of the diffracted beams from the optically transmissive substrate as output beams.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: May 31, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Samarth Bhargava, Victor Kai Liu, Kevin Messer
  • Publication number: 20220137417
    Abstract: An eyepiece waveguide for an augmented reality display system. The eyepiece waveguide can include an input coupling grating (ICG) region. The ICG region can couple an input beam into the substrate of the eyepiece waveguide as a guided beam. A first combined pupil expander-extractor (CPE) grating region can be formed on or in a surface of the substrate. The first CPE grating region can receive the guided beam, create a first plurality of diffracted beams at a plurality of distributed locations, and out-couple a first plurality of output beams. The eyepiece waveguide can also include a second CPE grating region formed on or in the opposite surface of the substrate. The second CPE grating region can receive the guided beam, create a second plurality of diffracted beams at a plurality of distributed locations, and out-couple a second plurality of output beams.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Samarth Bhargava, Victor Kai Liu, Kevin Messer
  • Publication number: 20220099976
    Abstract: A display system includes a waveguide assembly having a plurality of waveguides, each waveguide associated with an in-coupling optical element configured to in-couple light into the associated waveguide. A projector outputs light from one or more spatially-separated pupils, and at least one of the pupils outputs light of two different ranges of wavelengths. The in-coupling optical elements for two or more waveguides are inline, e.g. vertically aligned, with each other so that the in-coupling optical elements are in the path of light of the two different ranges of wavelengths. The in-coupling optical element of a first waveguide selectively in-couples light of one range of wavelengths into the waveguide, while the in-coupling optical element of a second waveguide selectively in-couples light of another range of wavelengths. Absorptive color filters are provided forward of an in-coupling optical element to limit the propagation of undesired wavelengths of light to that in-coupling optical element.
    Type: Application
    Filed: January 29, 2020
    Publication date: March 31, 2022
    Inventors: Mohammadreza Khorasaninejad, Victor Kai Liu, Dianmin Lin, Christophe Peroz, Pierre St. Hilaire
  • Publication number: 20220082754
    Abstract: An eyepiece for an augmented reality display system. The eyepiece can include a waveguide substrate. The waveguide substrate can include an input coupler grating (ICG), an orthogonal pupil expander (OPE) grating, a spreader grating, and an exit pupil expander (EPE) grating. The ICG can couple at least one input light beam into at least a first guided light beam that propagates inside the waveguide substrate. The OPE grating can divide the first guided light beam into a plurality of parallel, spaced-apart light beams. The spreader grating can receive the light beams from the OPE grating and spread their distribution. The spreader grating can include diffractive features oriented at approximately 90° to diffractive features of the OPE grating. The EPE grating can re-direct the light beams from the first OPE grating and the first spreader grating such that they exit the waveguide substrate.
    Type: Application
    Filed: November 23, 2021
    Publication date: March 17, 2022
    Inventors: Michael Anthony Klug, Robert Dale Tekolste, William Hudson Welch, Eric C. Browy, Victor Kai Liu, Samarth Bhargava
  • Patent number: 11237393
    Abstract: An eyepiece waveguide for an augmented reality display system. The eyepiece waveguide can include an input coupling grating (ICG) region. The ICG region can couple an input beam into the substrate of the eyepiece waveguide as a guided beam. A first combined pupil expander-extractor (CPE) grating region can be formed on or in a surface of the substrate. The first CPE grating region can receive the guided beam, create a first plurality of diffracted beams at a plurality of distributed locations, and out-couple a first plurality of output beams. The eyepiece waveguide can also include a second CPE grating region formed on or in the opposite surface of the substrate. The second CPE grating region can receive the guided beam, create a second plurality of diffracted beams at a plurality of distributed locations, and out-couple a second plurality of output beams.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: February 1, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Samarth Bhargava, Victor Kai Liu, Kevin Messer
  • Patent number: 11215744
    Abstract: In some embodiments, compositions and methods comprising reflective flowable materials, e.g., reflective liquids including reflective inks and/or liquid metals, are described. In some embodiments, a surface is contacted with a reflective flowable material, thereby forming a reflective layer on the surface. In some embodiments, the surface is a surface of a waveguide, for example a waveguide for a display device, and the flowable material coats surfaces of protrusions on the surface to form reflective diffractive optical elements. Some embodiments include a display device comprising a reflective layer of reflective flowable material.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: January 4, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Marlon Edward Menezes, Jeffrey Dean Schmulen, Neal Paul Ricks, Victor Kai Liu, Zongxing Wang, David Carl Jurbergs
  • Patent number: 11204462
    Abstract: An eyepiece waveguide for an augmented reality. The eyepiece waveguide can include a transparent substrate with an input coupler region, a first orthogonal pupil expander (OPE) region, and an exit pupil expander (EPE) region. The input coupler region can couple an input light beam that is externally incident on the input coupler region into at least a first guided light beam that propagates inside the substrate. The first OPE region can divide the first guided beam into a plurality of replicated, spaced-apart beams. The EPE region can re-direct the replicated beams from the first OPE region such that they exit the substrate. The EPE region can have an amount of optical power.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: December 21, 2021
    Assignee: Magic Leap, Inc.
    Inventors: Michael Anthony Klug, Robert Dale Tekolste, William Hudson Welch, Eric C. Browy, Victor Kai Liu, Samarth Bhargava
  • Publication number: 20210364803
    Abstract: An eyepiece waveguide for an augmented reality display system includes a substrate having a first surface and a second surface and a diffractive input coupling element formed on or in the first surface or the second surface of the substrate. The diffractive input coupling element is configured to receive an input beam of light and to couple the input beam into the substrate as a guided beam. The eyepiece waveguide also includes a diffractive combined pupil expander-extractor (CPE) element formed on or in the first surface or the second surface of the substrate. The diffractive CPE element includes a first portion and a second portion divided by an axis. A first set of diffractive optical elements is disposed in the first portion and oriented at a positive angle with respect to the axis and a second set of diffractive optical elements is disposed in the second portion and oriented at a negative angle with respect to the axis.
    Type: Application
    Filed: May 21, 2021
    Publication date: November 25, 2021
    Applicant: Magic Leap, Inc.
    Inventors: Brian T. Schowengerdt, Mathew D. Watson, Brandon Michael-James Born, Samarth Bhargava, Victor Kai Liu
  • Publication number: 20210364806
    Abstract: An eyepiece for a head-mounted display includes one or more first waveguides arranged to receive light from a spatial light modulator at a first edge, guide at least some of the received light to a second edge opposite the first edge, and extract at least some of the light through a face of the one or more first waveguides between the first and second edges. The eyepiece also includes a second waveguide positioned to receive light exiting the one or more first waveguides at the second edge and guide the received light to one or more light absorbers.
    Type: Application
    Filed: August 3, 2021
    Publication date: November 25, 2021
    Inventors: Fahri Yaras, Eric C. Browy, Victor Kai Liu, Samarth Bhargava, Vikramjit Singh, Michal Beau Dennison Vaughn, Joseph Christopher Sawicki
  • Publication number: 20210341744
    Abstract: Display devices include waveguides with in-coupling optical elements that mitigate re-bounce of in-coupled light to improve overall in-coupling efficiency and/or uniformity. A waveguide receives light from a light source and/or projection optics and includes an in-coupling optical element that in-couples the received light to propagate by total internal reflection in a propagation direction within the waveguide. Once in-coupled into the waveguide the light may undergo re-bounce, in which the light reflects off a waveguide surface and, after the reflection, strikes the in-coupling optical element. Upon striking the in-coupling optical element, the light may be partially absorbed and/or out-coupled by the optical element, thereby effectively reducing the amount of in-coupled light propagating through the waveguide.
    Type: Application
    Filed: July 19, 2021
    Publication date: November 4, 2021
    Inventors: Jeffrey Dean Schmulen, Neal Paul Ricks, Samarth Bhargava, Kevin Messer, Victor Kai Liu, Matthew Grant Dixon, Xiaopei Deng, Marlon Edward Menezes, Shuqiang Yang, Vikramjit Singh, Kang Luo, Frank Y. Xu
  • Publication number: 20210265132
    Abstract: A Procedural EBL system implements a user-provided oracle function (e.g., associated with a specific pattern) to generate control instructions for electron beam drive electronics in an on-demand basis. A control system may invoke the oracle function to query the pattern at individual point locations (e.g., individual x,y locations), and/or it may query the pattern over an area corresponding to a current field being addressed by the beam and stage positioner, for example. This Procedural EBL configuration manages control and pattern generation so that the low-level drive electronics and beam column may remain unchanged, allowing it to leverage existing EBL technologies.
    Type: Application
    Filed: February 23, 2021
    Publication date: August 26, 2021
    Inventors: Victor Kai Liu, Mauro Melli
  • Publication number: 20210255387
    Abstract: A plurality of waveguide display substrates, each waveguide display substrate having a cylindrical portion having a diameter and a planar surface, a curved portion opposite the planar surface defining a nonlinear change in thickness across the substrate and having a maximum height D with respect to the cylindrical portion, and a wedge portion between the cylindrical portion and the curved portion defining a linear change in thickness across the substrate and having a maximum height W with respect to the cylindrical portion. A target maximum height Dt of the curved portion is 10?7 to 10?6 times the diameter, D is between about 70% and about 130% of Dt, and W is less than about 30% of Dt.
    Type: Application
    Filed: May 5, 2021
    Publication date: August 19, 2021
    Inventors: Samarth Bhargava, Christophe Peroz, Victor Kai Liu