Patents by Inventor Victor K. Liu
Victor K. 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).
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Publication number: 20230221564Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide having a surface and a diffractive optical element (DOE) optically coupled to the waveguide. The DOE includes a plurality of first ridges protruding from the surface of the waveguide and arranged as a periodic array having a period, each respective first ridge has a first height and a respective first width. The DOE also includes a plurality of second ridges, each respective second ridge protruding from a respective first ridge and having a second height greater than the first height and a respective second width less than the respective first width. At least one of the respective first width, the respective second width, or a respective ratio between the respective first width and the respective second width varies as a function of a distance from a first edge of the DOE.Type: ApplicationFiled: March 15, 2023Publication date: July 13, 2023Applicant: Magic Leap, Inc.Inventors: Robert D. Tekolste, Victor K. Liu
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Patent number: 11635626Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.Type: GrantFiled: June 4, 2021Date of Patent: April 25, 2023Assignee: Magic Leap, Inc.Inventors: Robert D. Tekolste, Victor K. Liu
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Publication number: 20210364805Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.Type: ApplicationFiled: June 4, 2021Publication date: November 25, 2021Applicant: Magic Leap, Inc.Inventors: Robert D. Tekolste, Victor K. Liu
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Patent number: 11054655Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.Type: GrantFiled: April 1, 2020Date of Patent: July 6, 2021Assignee: Magic Leap, Inc.Inventors: Robert D. Tekolste, Victor K. Liu
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Patent number: 10983263Abstract: An eyepiece and waveguide for viewing a projected image in a virtual reality and augmented reality imaging and visualization system. The waveguide may include a substrate for guiding light. The waveguide may also include an incoupling diffractive element disposed within or on the substrate and configured to diffract an incoupled light related to the projected image into the substrate. The waveguide may further include a first grating disposed within or on the substrate and configured to manipulate the diffracted incoupled light from the incoupling diffractive element so as to multiply the projected image and to direct the multiplied projected image to a second grating. The second grating may be disposed within or on the substrate and may be configured to outcouple the manipulated diffracted incoupled light from the waveguide. The first grating and the second grating may occupy a same region of the waveguide.Type: GrantFiled: August 22, 2017Date of Patent: April 20, 2021Assignee: Magic Leap, Inc.Inventors: David Kleinman, Samarth Bhargava, Victor K. Liu, David Jurbergs
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Publication number: 20200225491Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.Type: ApplicationFiled: April 1, 2020Publication date: July 16, 2020Applicant: Magic Leap, Inc.Inventors: Robert D. Tekolste, Victor K. Liu
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Patent number: 10649213Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.Type: GrantFiled: July 17, 2018Date of Patent: May 12, 2020Assignee: Magic Leap, Inc.Inventors: Robert D. Tekolste, Victor K. Liu
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Patent number: 10444419Abstract: A device includes an input coupling grating having a first grating structure characterized by a first set of grating parameters. The input coupling grating is configured to receive light from a light source. The device also includes an expansion grating having a second grating structure characterized by a second set of grating parameters varying in at least two dimensions. The second grating structure is configured to receive light from the input coupling grating. The device further includes an output coupling grating having a third grating structure characterized by a third set of grating parameters. The output coupling grating is configured to receive light from the expansion grating and to output light to a viewer.Type: GrantFiled: August 22, 2017Date of Patent: October 15, 2019Assignee: Magic Leap, Inc.Inventors: Samarth Bhargava, Robert D. TeKolste, Victor K. Liu, Christophe Peroz, Pierre St. Hilaire, Evgeni Poliakov, Jason Schaefer, Mauro Melli, Melanie West, Kang Luo, Vikramjit Singh, Frank Y. Xu
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Publication number: 20180341113Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.Type: ApplicationFiled: July 17, 2018Publication date: November 29, 2018Applicant: Magic Leap, Inc.Inventors: Robert D. Tekolste, Victor K. Liu
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Patent number: 10073267Abstract: An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a first portion of the light propagating in the waveguide toward the eye, and to diffract a second portion of the light propagating in the waveguide away from the eye.Type: GrantFiled: October 25, 2017Date of Patent: September 11, 2018Assignee: MAGIC LEAP, INC.Inventors: Robert D. Tekolste, Victor K. Liu
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Publication number: 20180113313Abstract: An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a first portion of the light propagating in the waveguide toward the eye, and to diffract a second portion of the light propagating in the waveguide away from the eye.Type: ApplicationFiled: October 25, 2017Publication date: April 26, 2018Applicant: Magic Leap, Inc.Inventors: Robert D. TEKOLSTE, Victor K. LIU
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Publication number: 20180059304Abstract: A device includes an input coupling grating having a first grating structure characterized by a first set of grating parameters. The input coupling grating is configured to receive light from a light source. The device also includes an expansion grating having a second grating structure characterized by a second set of grating parameters varying in at least two dimensions. The second grating structure is configured to receive light from the input coupling grating. The device further includes an output coupling grating having a third grating structure characterized by a third set of grating parameters. The output coupling grating is configured to receive light from the expansion grating and to output light to a viewer.Type: ApplicationFiled: August 22, 2017Publication date: March 1, 2018Applicant: Magic Leap, Inc.Inventors: Samarth Bhargava, Robert D. TeKolste, Victor K. Liu, Christophe Peroz, Pierre St. Hilaire, Evgeni Poliakov, Jason Schaefer, Mauro Melli, Melanie West, Kang Luo, Vikramjit Singh, Frank Y. Xu
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Publication number: 20180052276Abstract: An eyepiece and waveguide for viewing a projected image in a virtual reality and augmented reality imaging and visualization system. The waveguide may include a substrate for guiding light. The waveguide may also include an incoupling diffractive element disposed within or on the substrate and configured to diffract an incoupled light related to the projected image into the substrate. The waveguide may further include a first grating disposed within or on the substrate and configured to manipulate the diffracted incoupled light from the incoupling diffractive element so as to multiply the projected image and to direct the multiplied projected image to a second grating. The second grating may be disposed within or on the substrate and may be configured to outcouple the manipulated diffracted incoupled light from the waveguide. The first grating and the second grating may occupy a same region of the waveguide.Type: ApplicationFiled: August 22, 2017Publication date: February 22, 2018Applicant: Magic Leap, Inc.Inventors: Dave Klienman, Samarth Bhargava, Victor K. Liu, David Jurbergs