Patents by Inventor Alexander Shpunt

Alexander Shpunt 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: 11385463
    Abstract: An optical system includes a transparent display, which has a first side configured to be positioned in proximity to an eye of an observer and a second side opposite the first side, and which is configured to project an image into the eye. An image generator is configured to generate a sequence of images during respective display intervals, which are interleaved with blanking intervals, and to transmit the images to the transparent display for projection into the eye. A shutter is positioned on the second side of the display and having a first state in which the shutter blocks optical radiation and a second state in which the shutter transmits optical radiation. A controller drives the image generator and the shutter so that the shutter operates in the first state during the display intervals and in the second state during the blanking intervals.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: July 12, 2022
    Assignee: APPLE INC.
    Inventors: Arman Hajati, Alexander Shpunt
  • Publication number: 20220155588
    Abstract: Methods and systems for a virtual and/or augmented reality device may include a light emitting device that includes one or more light emitting elements configured to generate collimated light beams. A scanning mirror may include one or more microelectromechanical systems (MEMS) mirrors. Each MEMS mirror of the scanning mirror may be configured to dynamically tilt in at least one of two orthogonal degrees of freedom to raster scan the light beams over multiple angles corresponding to a field of view of an image. A curved mirror may include curves in two orthogonal directions configured to reflect the collimated light beams from the scanning mirror into a subject's eye in proximity to the curved mirror to form a virtual image. The curved mirror may allow external light to pass through, thus allowing the virtual image to be combined with a real image to provide an augmented reality.
    Type: Application
    Filed: February 4, 2022
    Publication date: May 19, 2022
    Applicant: Apple Inc.
    Inventors: Richard J. Topliss, Alexander Shpunt
  • Publication number: 20220128819
    Abstract: An augmented reality headset may include a reflective holographic combiner to direct light from a light engine into a user's eye while also transmitting light from the environment. The combiner and engine may be arranged to project light fields with different fields of view and resolution to match the visual acuity of the eye. The combiner may be recorded with a series of point to point holograms; one projection point interacts with multiple holograms to project light onto multiple eye box points. The engine may include a laser diode array, a distribution waveguide, scanning mirrors, and layered waveguides that perform pupil expansion and that emit wide beams of light through foveal projection points and narrower beams of light through peripheral projection points. The light engine may include focusing elements to focus the beams such that, once reflected by the holographic combiner, the light is substantially collimated.
    Type: Application
    Filed: December 30, 2021
    Publication date: April 28, 2022
    Applicant: Apple Inc.
    Inventors: Richard J. Topliss, Paul J. Gelsinger-Austin, Thomas M. Gregory, Richard H. Tsai, Alexander Shpunt
  • Patent number: 11310479
    Abstract: A method for depth mapping includes projecting a pattern of optical radiation into a volume of interest containing an object while varying an aspect of the pattern over the volume of interest. The optical radiation reflected from the object responsively to the pattern is sensed, and a depth map of the object is generated based on the sensed optical radiation.
    Type: Grant
    Filed: August 23, 2020
    Date of Patent: April 19, 2022
    Assignee: APPLE INC.
    Inventors: Alexander Shpunt, Zafrir Mor
  • Patent number: 11262580
    Abstract: Methods and systems for a virtual and/or augmented reality device may include a light emitting device that includes one or more light emitting elements configured to generate collimated light beams. A scanning mirror may include one or more microelectromechanical systems (MEMS) mirrors. Each MEMS mirror of the scanning mirror may be configured to dynamically tilt in at least one of two orthogonal degrees of freedom to raster scan the light beams over multiple angles corresponding to a field of view of an image. A curved mirror may include curves in two orthogonal directions configured to reflect the collimated light beams from the scanning mirror into a subject's eye in proximity to the curved mirror to form a virtual image. The curved mirror may allow external light to pass through, thus allowing the virtual image to be combined with a real image to provide an augmented reality.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: March 1, 2022
    Assignee: Apple Inc.
    Inventors: Richard J. Topliss, Alexander Shpunt
  • Patent number: 11215829
    Abstract: An augmented reality headset may include a reflective holographic combiner to direct light from a light engine into a user's eye while also transmitting light from the environment. The combiner and engine may be arranged to project light fields with different fields of view and resolution to match the visual acuity of the eye. The combiner may be recorded with a series of point to point holograms; one projection point interacts with multiple holograms to project light onto multiple eye box points. The engine may include a laser diode array, a distribution waveguide, scanning mirrors, and layered waveguides that perform pupil expansion and that emit wide beams of light through foveal projection points and narrower beams of light through peripheral projection points. The light engine may include focusing elements to focus the beams such that, once reflected by the holographic combiner, the light is substantially collimated.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: January 4, 2022
    Assignee: Apple Inc.
    Inventors: Richard J. Topliss, Paul J. Gelsinger-Austin, Thomas M. Gregory, Richard H. Tsai, Alexander Shpunt
  • Publication number: 20210344889
    Abstract: A direct retinal projector system that provides dynamic focusing for virtual reality (VR) and/or augmented reality (AR) is described. A direct retinal projector system scans images, pixel by pixel, directly onto the subject's retinas. This allows individual pixels to be optically affected dynamically as the images are scanned to the subject's retinas. Dynamic focusing components and techniques are described that may be used in a direct retinal projector system to dynamically and correctly focus each pixel in VR images as the images are being scanned to a subject's eyes. This allows objects, surfaces, etc. that are intended to appear at different distances in a scene to be projected to the subject's eyes at the correct depths.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 4, 2021
    Applicant: Apple Inc.
    Inventor: Alexander Shpunt
  • Patent number: 11157072
    Abstract: A direct retinal projector may include a gaze tracking system that tracks position of a subject's pupil and automatically adjusts projection of a scanned light field so that the light field enters the pupil. A control loop adjusts a scanning mirror to substantially center an IR beam on a position sensing detector (PSD). In so doing, the scanning mirror is correctly positioned so that the scanned light field from the projector enters the subject's pupil. In addition, a direct retinal projector may include an adjustable focusing element that adjusts focus of a combined light beam generated by a projector as the light beam is scanned to an ellipsoid mirror that reflects the light beam to the subject's pupil. The focusing of the scanned beam may be adjusted as the beam is scanned across the azimuth angle of the curved ellipsoid mirror.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: October 26, 2021
    Assignee: Apple Inc.
    Inventors: Richard J. Topliss, James H. Foster, Alexander Shpunt
  • Publication number: 20210293533
    Abstract: Optical apparatus includes a beam source, which is configured to generate an optical beam having a pattern imposed thereon. A projection lens is configured to receive and project the optical beam so as to cast the pattern onto a first area in space having a first angular extent. A field multiplier is interposed between the projection lens and the first area and is configured to expand the projected optical beam so as to cast the pattern onto a second area in space having a second angular extent that is at least 50% greater than the first angular extent.
    Type: Application
    Filed: June 7, 2021
    Publication date: September 23, 2021
    Inventors: Benny Pesach, Zafrir Mor, Shimon Yalov, Alexander Shpunt
  • Patent number: 11100661
    Abstract: A method for depth mapping includes receiving optical radiation reflected from multiple points on an object and processing the received optical radiation to generate depth data including multiple candidate depth coordinates for each of a plurality of pixels and respective measures of confidence associated with the candidate depth coordinates. One of the candidate depth coordinates is selected at each of the plurality of the pixels responsively to the respective measures of confidence. A depth map of the object is output, including the selected one of the candidate depth coordinates at each of the plurality of the pixels.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: August 24, 2021
    Assignee: APPLE INC.
    Inventors: Alexander Shpunt, Gerard Medioni, Daniel Cohen, Erez Sali, Ronen Deitch
  • Patent number: 11070785
    Abstract: A direct retinal projector system that provides dynamic focusing for virtual reality (VR) and/or augmented reality (AR) is described. A direct retinal projector system scans images, pixel by pixel, directly onto the subject's retinas. This allows individual pixels to be optically affected dynamically as the images are scanned to the subject's retinas. Dynamic focusing components and techniques are described that may be used in a direct retinal projector system to dynamically and correctly focus each pixel in VR images as the images are being scanned to a subject's eyes. This allows objects, surfaces, etc. that are intended to appear at different distances in a scene to be projected to the subject's eyes at the correct depths.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: July 20, 2021
    Assignee: Apple Inc.
    Inventor: Alexander Shpunt
  • Patent number: 10985524
    Abstract: An optoelectronic device includes a silicon substrate, with a silicon waveguide layer disposed over the silicon substrate and including an optical waveguide. One or more through-silicon vias (TSVs) extend through the silicon substrate and contact the silicon waveguide layer. A III-V base layer is disposed over the silicon waveguide layer, and an optical amplifier is disposed on the III-V base layer and optically coupled to the optical waveguide.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: April 20, 2021
    Assignee: APPLE INC.
    Inventors: Igal I. Bayn, Andrew J. Sutton, Alexander Shpunt, Yuval Gerson
  • Publication number: 20200393615
    Abstract: An optoelectronic device includes a substrate and at least three emitters, which are disposed on the substrate and are configured to emit respective beams of light. A plurality of waveguides are disposed on the substrate and have respective input ends coupled to receive the beams of light from respective ones of the emitters, and curve adiabatically from the input ends to respective output ends of the waveguides, which are arranged on the substrate in an array having a predefined pitch. Control circuitry is configured to apply a temporal modulation independently to each of the beams of light.
    Type: Application
    Filed: April 27, 2020
    Publication date: December 17, 2020
    Inventors: Igal I. Bayn, Alexander Shpunt, Arman Hajati
  • Publication number: 20200389641
    Abstract: A method for depth mapping includes projecting a pattern of optical radiation into a volume of interest containing an object while varying an aspect of the pattern over the volume of interest. A time of flight of the optical radiation reflected from the object responsively to the pattern is sensed, and a depth map of the object is generated based on the sensed time of flight.
    Type: Application
    Filed: August 23, 2020
    Publication date: December 10, 2020
    Inventors: Alexander Shpunt, Zafrir Mor
  • Publication number: 20200371585
    Abstract: A beam generating device includes a semiconductor substrate, having an optical passband. A first array of vertical-cavity surface-emitting lasers (VCSELs) is formed on a first face of the semiconductor substrate and are configured to emit respective laser beams through the substrate at a wavelength within the passband. A second array of microlenses is formed on a second face of the semiconductor substrate in respective alignment with the VCSELs so as to transmit the laser beams generated by the VCSELs.
    Type: Application
    Filed: August 11, 2020
    Publication date: November 26, 2020
    Inventors: Alexander Shpunt, Raviv Erlich, Zafrir Mor
  • Patent number: 10823955
    Abstract: An optical device includes a laser light source configured to emit a collimated beam of light, and a scanning mirror, which is configured to reflect and scan the beam of light over a predefined angular range. The optical device further includes a volume holographic grating (VHG), which is positioned to receive and reflect the collimated beam emitted by the laser light source toward the scanning mirror by Bragg reflection at a predefined Bragg-angle, while transmitting the beam reflected from the scanning mirror over a part of the angular range that is outside a cone containing the Bragg-angle.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: November 3, 2020
    Assignee: APPLE INC.
    Inventors: Andrew J. Sutton, Alexander Shpunt, Yuval Gerson
  • Patent number: 10795001
    Abstract: An electro-optical device includes a laser light source, which is configured to emit at least one beam of light. A beam steering device is configured to transmit and scan the at least one beam across a target scene. In an array of sensing elements, each sensing element is configured to output a signal indicative of incidence of photons on the sensing element. Light collection optics are configured to image the target scene scanned by the transmitted beam onto the array, wherein the beam steering device scans the at least one beam across the target scene with a spot size and scan resolution that are smaller than a pitch of the sensing elements. Circuitry is coupled to actuate the sensing elements only in a selected region of the array and to sweep the selected region over the array in synchronization with scanning of the at least one beam.
    Type: Grant
    Filed: December 15, 2019
    Date of Patent: October 6, 2020
    Assignee: APPLE INC.
    Inventors: Cristiano L. Niclass, Alexander Shpunt, Gennadiy A. Agranov, Matthew C. Waldon, Mina A. Rezk, Thierry Oggier
  • Patent number: 10791320
    Abstract: A method for depth mapping includes providing depth mapping resources, including a radiation source, which projects optical radiation into a volume of interest containing an object, and a sensor, which senses the optical radiation reflected from the object. The volume of interest has a depth that varies with angle relative to the radiation source and the sensor. A depth map of the object is generated using the resources while applying at least one of the resources non-uniformly over the volume of interest, responsively to the varying depth as a function of the angle.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: September 29, 2020
    Assignee: APPLE INC.
    Inventors: Alexander Shpunt, Zafrir Mor
  • Publication number: 20200304771
    Abstract: A direct retinal projector system that provides dynamic focusing for virtual reality (VR) and/or augmented reality (AR) is described. A direct retinal projector system scans images, pixel by pixel, directly onto the subject's retinas. This allows individual pixels to be optically affected dynamically as the images are scanned to the subject's retinas. Dynamic focusing components and techniques are described that may be used in a direct retinal projector system to dynamically and correctly focus each pixel in VR images as the images are being scanned to a subject's eyes. This allows objects, surfaces, etc. that are intended to appear at different distances in a scene to be projected to the subject's eyes at the correct depths.
    Type: Application
    Filed: June 5, 2020
    Publication date: September 24, 2020
    Applicant: Apple Inc.
    Inventor: Alexander Shpunt
  • Patent number: 10775612
    Abstract: Optical apparatus includes a shaft, which is configured to rotate about an axis of the shaft relative to a base. A mirror is fixed to the shaft so that the mirror rotates about the axis. A rotor including a permanent magnet is fixed to rotate with the shaft. A stator is configured to generate a magnetic field having a DC component in a vicinity of the rotor. A torsion spring, extending along the axis, has a first end that is attached to rotate with the shaft and a second end attached to the base.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: September 15, 2020
    Assignee: APPLE INC.
    Inventors: Alexander Shpunt, Yuval Gerson