Patents by Inventor Evgeni Poliakov

Evgeni Poliakov 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: 20220295022
    Abstract: This disclosure relates to the use of variable-pitch light-emitting devices for display applications, including for displays in augmented reality, virtual reality, and mixed reality environments. In particular, it relates to small (e.g., micron-size) light emitting devices (e.g., micro-LEDs) of variable pitch to provide the advantages, e.g., of compactness, manufacturability, color rendition, as well as computational and power savings. Systems and methods for emitting multiple lights by multiple panels where a pitch of one panel is different than pitch(es) of other panels are disclosed. Each panel may comprise a respective array of light emitters. The multiple lights may be combined by a combiner.
    Type: Application
    Filed: June 1, 2022
    Publication date: September 15, 2022
    Inventors: Pierre ST. HILAIRE, Evgeni POLIAKOV, Sundeep Kumar JOLLY
  • Publication number: 20220283438
    Abstract: An optical system comprises an optically transmissive substrate comprising a metasurface which comprises a grating comprising a plurality of unit cells. Each unit cell comprises a laterally-elongated first nanobeam having a first width; and a laterally-elongated second nanobeam spaced apart from the first nanobeam by a gap, the second nanobeam having a second width larger than the first width. A pitch of the unit cells is 10 nm to 1 ?m. The heights of the first and the second nanobeams are: 10 nm to 450 nm where a refractive index of the substrate is more than 3.3; and 10 nm to 1 ?m where the refractive index is 3.3 or less.
    Type: Application
    Filed: May 20, 2022
    Publication date: September 8, 2022
    Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
  • Patent number: 11381791
    Abstract: This disclosure relates to the use of variable-pitch light-emitting devices for display applications, including for displays in augmented reality, virtual reality, and mixed reality environments. In particular, it relates to small (e.g., micron-size) light emitting devices (e.g., micro-LEDs) of variable pitch to provide the advantages, e.g., of compactness, manufacturability, color rendition, as well as computational and power savings. Systems and methods for emitting multiple lights by multiple panels where a pitch of one panel is different than pitch(es) of other panels are disclosed. Each panel may comprise a respective array of light emitters. The multiple lights may be combined by a combiner.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: July 5, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Pierre St. Hilaire, Evgeni Poliakov, Sundeep Kumar Jolly
  • Patent number: 11360306
    Abstract: An optical system comprises an optically transmissive substrate comprising a metasurface which comprises a grating comprising a plurality of unit cells. Each unit cell comprises a laterally-elongated first nanobeam having a first width; and a laterally-elongated second nanobeam spaced apart from the first nanobeam by a gap, the second nanobeam having a second width larger than the first width. A pitch of the unit cells is 10 nm to 1 ?m. The heights of the first and the second nanobeams are: 10 nm to 450 nm where a refractive index of the substrate is more than 3.3; and 10 nm to 1 ?m where the refractive index is 3.3 or less.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: June 14, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
  • Publication number: 20220163709
    Abstract: Metasurfaces provide compact optical elements in head-mounted display systems to, e.g., incouple light into or outcouple light out of a waveguide. The metasurfaces may be formed by a plurality of repeating unit cells, each unit cell comprising two sets or more of nanobeams elongated in crossing directions: one or more first nanobeams elongated in a first direction and a plurality of second nanobeams elongated in a second direction. As seen in a top-down view, the first direction may be along a y-axis, and the second direction may be along an x-axis. The unit cells may have a periodicity in the range of 10 nm to 1 ?m, including 10 nm to 500 nm or 300 nm to 500 nm. Advantageously, the metasurfaces provide diffraction of light with high diffraction angles and high diffraction efficiencies over a broad range of incident angles and for incident light with circular polarization.
    Type: Application
    Filed: February 7, 2022
    Publication date: May 26, 2022
    Inventors: Dianmin Lin, Michael Anthony Klug, Pierre St. Hilaire, Mauro Melli, Christophe Peroz, Evgeni Poliakov
  • Publication number: 20220146745
    Abstract: A display system comprises a waveguide having light incoupling or light outcoupling optical elements formed of a metasurface. The metasurface is a multilevel (e.g., bi-level) structure having a first level defined by spaced apart protrusions formed of a first optically transmissive material and a second optically transmissive material between the protrusions. The metasurface also includes a second level formed by the second optically transmissive material. The protrusions on the first level may be patterned by nanoimprinting the first optically transmissive material, and the second optically transmissive material may be deposited over and between the patterned protrusions. The widths of the protrusions and the spacing between the protrusions may be selected to diffract light, and a pitch of the protrusions may be 10-600 nm.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
  • Publication number: 20220050298
    Abstract: A wearable display system includes one or more emissive micro-displays, e.g., micro-LED displays. The micro-displays may be monochrome micro-displays or full-color micro-displays. The micro-displays may include arrays of light emitters. Light collimators may be utilized to narrow the angular emission profile of light emitted by the light emitters. Where a plurality of emissive micro-displays is utilized, the micro-displays may be positioned at different sides of an optical combiner, e.g., an X-cube prism which receives light rays from different micro-displays and outputs the light rays from the same face of the cube. The optical combiner directs the light to projection optics, which outputs the light to an eyepiece that relays the light to a user's eye. The eyepiece may output the light to the user's eye with different amounts of wavefront divergence, to place virtual content on different depth planes.
    Type: Application
    Filed: December 20, 2019
    Publication date: February 17, 2022
    Inventors: Michael Anthony Klug, Evgeni Poliakov, Jahja I. Trisnadi, Hyunsun Chung, Lionel Ernest Edwin, Howard Russell Cohen, Robert Blake Taylor, Andrew Ian Russell, Kevin Richard Curtis, Clinton Carlisle
  • Patent number: 11243338
    Abstract: Metasurfaces provide compact optical elements in head-mounted display systems to, e.g., incouple light into or outcouple light out of a waveguide. The metasurfaces may be formed by a plurality of repeating unit cells, each unit cell comprising two sets or more of nanobeams elongated in crossing directions: one or more first nanobeams elongated in a first direction and a plurality of second nanobeams elongated in a second direction. As seen in a top-down view, the first direction may be along a y-axis, and the second direction may be along an x-axis. The unit cells may have a periodicity in the range of 10 nm to 1 ?m, including 10 nm to 500 nm or 300 nm to 500 nm. Advantageously, the metasurfaces provide diffraction of light with high diffraction angles and high diffraction efficiencies over a broad range of incident angles and for incident light with circular polarization.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: February 8, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Dianmin Lin, Michael Anthony Klug, Pierre St. Hilaire, Mauro Melli, Christophe Peroz, Evgeni Poliakov
  • Patent number: 11231544
    Abstract: A display system comprises a waveguide having light incoupling or light outcoupling optical elements formed of a metasurface. The metasurface is a multilevel (e.g., bi-level) structure having a first level defined by spaced apart protrusions formed of a first optically transmissive material and a second optically transmissive material between the protrusions. The metasurface also includes a second level formed by the second optically transmissive material. The protrusions on the first level may be patterned by nanoimprinting the first optically transmissive material, and the second optically transmissive material may be deposited over and between the patterned protrusions. The widths of the protrusions and the spacing between the protrusions may be selected to diffract light, and a pitch of the protrusions may be 10-600 nm.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: January 25, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
  • Publication number: 20210176440
    Abstract: This disclosure relates to the use of variable-pitch light-emitting devices for display applications, including for displays in augmented reality, virtual reality, and mixed reality environments. In particular, it relates to small (e.g., micron-size) light emitting devices (e.g., micro-LEDs) of variable pitch to provide the advantages, e.g., of compactness, manufacturability, color rendition, as well as computational and power savings. Systems and methods for emitting multiple lights by multiple panels where a pitch of one panel is different than pitch(es) of other panels are disclosed. Each panel may comprise a respective array of light emitters. The multiple lights may be combined by a combiner.
    Type: Application
    Filed: December 4, 2020
    Publication date: June 10, 2021
    Inventors: Pierre ST. HILAIRE, Evgeni POLIAKOV, Sundeep Kumar JOLLY
  • Publication number: 20200150437
    Abstract: An optical system comprises an optically transmissive substrate comprising a metasurface which comprises a grating comprising a plurality of unit cells. Each unit cell comprises a laterally-elongated first nanobeam having a first width; and a laterally-elongated second nanobeam spaced apart from the first nanobeam by a gap, the second nanobeam having a second width larger than the first width. A pitch of the unit cells is 10 nm to 1 ?m. The heights of the first and the second nanobeams are: 10 nm to 450 nm where a refractive index of the substrate is more than 3.3; and 10 nm to 1 ?m where the refractive index is 3.3 or less.
    Type: Application
    Filed: January 2, 2020
    Publication date: May 14, 2020
    Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
  • Publication number: 20200142110
    Abstract: Metasurfaces provide compact optical elements in head-mounted display systems to, e.g., incouple light into or outcouple light out of a waveguide. The metasurfaces may be formed by a plurality of repeating unit cells, each unit cell comprising two sets or more of nanobeams elongated in crossing directions: one or more first nanobeams elongated in a first direction and a plurality of second nanobeams elongated in a second direction. As seen in a top-down view, the first direction may be along a y-axis, and the second direction may be along an x-axis. The unit cells may have a periodicity in the range of 10 nm to 1 ?m, including 10 nm to 500 nm or 300 nm to 500 nm. Advantageously, the metasurfaces provide diffraction of light with high diffraction angles and high diffraction efficiencies over a broad range of incident angles and for incident light with circular polarization.
    Type: Application
    Filed: November 4, 2019
    Publication date: May 7, 2020
    Inventors: Dianmin Lin, Michael Anthony Klug, Pierre St. Hilaire, Mauro Melli, Christophe Peroz, Evgeni Poliakov
  • Patent number: 10527851
    Abstract: An optical system comprises an optically transmissive substrate comprising a metasurface which comprises a grating comprising a plurality of unit cells. Each unit cell comprises a laterally-elongated first nanobeam having a first width; and a laterally-elongated second nanobeam spaced apart from the first nanobeam by a gap, the second nanobeam having a second width larger than the first width. A pitch of the unit cells is 10 nm to 1 ?m. The heights of the first and the second nanobeams are: 10 nm to 450 nm where a refractive index of the substrate is more than 3.3; and 10 nm to 1 ?m where the refractive index is 3.3 or less.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: January 7, 2020
    Assignee: Magic Leap, Inc.
    Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
  • Patent number: 10466394
    Abstract: Metasurfaces provide compact optical elements in head-mounted display systems to, e.g., incouple light into or outcouple light out of a waveguide. The metasurfaces may be formed by a plurality of repeating unit cells, each unit cell comprising two sets or more of nanobeams elongated in crossing directions: one or more first nanobeams elongated in a first direction and a plurality of second nanobeams elongated in a second direction. As seen in a top-down view, the first direction may be along a y-axis, and the second direction may be along an x-axis. The unit cells may have a periodicity in the range of 10 nm to 1 ?m, including 10 nm to 500 nm or 300 nm to 500 nm. Advantageously, the metasurfaces provide diffraction of light with high diffraction angles and high diffraction efficiencies over a broad range of incident angles and for incident light with circular polarization.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: November 5, 2019
    Assignee: Magic Leap, Inc.
    Inventors: Dianmin Lin, Michael Anthony Klug, Pierre St. Hilaire, Mauro Melli, Christophe Peroz, Evgeni Poliakov
  • Patent number: 10444419
    Abstract: 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: Grant
    Filed: August 22, 2017
    Date of Patent: October 15, 2019
    Assignee: 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
  • Patent number: 10085652
    Abstract: An optical sensor and a method of using the optical sensor in an optical measuring device that measures cardiovascular properties and compensates for movement artifacts by directing a sheet of light towards an artery. The optical sensor may include one or more light sources, one or more transmit light guides coupled to the one or more light sources and configured to direct light from the one or more light sources as a sheet of light towards an artery, such that the cross-sectional profile of the sheet of light may have a length transverse to a longitudinal direction of the artery that is longer than the diameter of the artery. The optical sensor may include one or more light detectors configured to receive backscattered light and generate an output based on the received backscattered light that is a reflection of the sheet of light from the artery and surrounding tissues.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: October 2, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: David Boettcher Baek, Russell Gruhlke, Evgeni Poliakov, Khurshid Alam, Lars Lading
  • Publication number: 20180231702
    Abstract: Metasurfaces provide compact optical elements in head-mounted display systems to, e.g., incouple light into or outcouple light out of a waveguide. The metasurfaces may be formed by a plurality of repeating unit cells, each unit cell comprising two sets or more of nanobeams elongated in crossing directions: one or more first nanobeams elongated in a first direction and a plurality of second nanobeams elongated in a second direction. As seen in a top-down view, the first direction may be along a y-axis, and the second direction may be along an x-axis. The unit cells may have a periodicity in the range of 10 nm to 1 ?m, including 10 nm to 500 nm or 300 nm to 500 nm. Advantageously, the metasurfaces provide diffraction of light with high diffraction angles and high diffraction efficiencies over a broad range of incident angles and for incident light with circular polarization.
    Type: Application
    Filed: January 25, 2018
    Publication date: August 16, 2018
    Inventors: Dianmin Lin, Michael Anthony Klug, Pierre St. Hilaire, Mauro Melli, Christophe Peroz, Evgeni Poliakov
  • Publication number: 20180217395
    Abstract: Antireflection coatings for metasurfaces are described herein. In some embodiments, the metasurface may include a substrate, a plurality of nanostructures thereon, and an antireflection coating disposed over the nanostructures. The antireflection coating may be a transparent polymer, for example a photoresist layer, and may have a refractive index lower than the refractive index of the nanostructures and higher than the refractive index of the overlying medium (e.g., air). Advantageously, the antireflection coatings may reduce or eliminate ghost images in an augmented reality display in which the metasurface is incorporated.
    Type: Application
    Filed: January 24, 2018
    Publication date: August 2, 2018
    Inventors: Dianmin Lin, Michael Anthony Klug, Pierre St. Hilaire, Mauro Melli, Christophe Peroz, Evgeni Poliakov
  • Publication number: 20180059304
    Abstract: 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: Application
    Filed: August 22, 2017
    Publication date: March 1, 2018
    Applicant: 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
  • Publication number: 20170322418
    Abstract: An optical system comprises an optically transmissive substrate comprising a metasurface which comprises a grating comprising a plurality of unit cells. Each unit cell comprises a laterally-elongated first nanobeam having a first width; and a laterally-elongated second nanobeam spaced apart from the first nanobeam by a gap, the second nanobeam having a second width larger than the first width. A pitch of the unit cells is 10 nm to 1 ?m. The heights of the first and the second nanobeams are: 10 nm to 450 nm where a refractive index of the substrate is more than 3.3; and 10 nm to 1 ?m where the refractive index is 3.3 or less.
    Type: Application
    Filed: May 5, 2017
    Publication date: November 9, 2017
    Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov