Patents by Inventor Andreas Georgiou

Andreas Georgiou 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: 20240085714
    Abstract: The present disclosure describes near-eye display systems including an array of projectors and a one-dimensional exit pupil expander. The array of projectors can be arranged along a first dimension and can output image light towards an input coupler within a waveguide that provides one-dimensional exit pupil expansion. In some implementations, arrays of monochromatic projectors are implemented and arranged in offset columns. The input coupler in-couples the image light from the array of projectors into a TIR path within the waveguide. Different optical elements, including diffractive and reflective optics, may be implemented as the input coupler. The image light travels within the waveguide until it interacts with an output coupler. Upon interaction with the output coupler, the image light is expanded in a second dimension transverse to the first dimension and is coupled out of the waveguide.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 14, 2024
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Joel Steven KOLLIN, Andreas GEORGIOU, Ishan CHATTERJEE, Bernard Charles KRESS, Maria Esther PACE, Mario POSSIWAN
  • Patent number: 11894035
    Abstract: A holographic data storage system comprises an emitter system, a holographic recording medium, and an input waveguide network formed of one or more multimode optical waveguides. The holographic recording medium has multiple recording regions, each optically coupled to a corresponding one of multiple out-coupling regions of the input waveguide network, the holographic data storage system arranged to persistently write data of an input beam, received at any one of the out-coupling regions, to the corresponding recording region. A controller is coupled to at least one of the emitter system and at least one controllable guiding element of the input waveguide network and controls at least one optical characteristic of the input beam or the at least one guiding element, so as to guide the input beam from an in-coupling region to any selected one of the multiple out-coupling regions. Similar waveguide networks are provided for carrying reference and output beams.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: February 6, 2024
    Assignee: Microsoft Technology Licensing, LLC.
    Inventors: Douglas James Kelly, Benn Charles Thomsen, Dushyanth Narayanan, Antony Ian Taylor Rowstron, Andreas Georgiou
  • Patent number: 11852824
    Abstract: Examples are disclosed that relate to using an array of hot mirrors in an eye-imaging system. One example provides a head-mounted display system, comprising a frame, an eye-imaging camera supported on the frame, a switchable hot mirror array comprising a plurality of switchable hot mirrors configured to direct light reflecting from an eye toward the eye-imaging camera, and a controller configured to control switching of a reflectivity of each of the plurality of switchable hot mirrors.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: December 26, 2023
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Benjamin Eliot Lundell, Joel Steven Kollin, Ishan Chatterjee, Maria Esther Pace, Mark Theodore Bolas, Bernard Charles Kress, Robert Thomas Held, Andreas Georgiou, Christopher Charles Aholt
  • Publication number: 20230360674
    Abstract: A holographic data storage system comprises an emitter system, a holographic recording medium, and an input waveguide network formed of one or more multimode optical waveguides. The holographic recording medium has multiple recording regions, each optically coupled to a corresponding one of multiple out-coupling regions of the input waveguide network, the holographic data storage system arranged to persistently write data of an input beam, received at any one of the out-coupling regions, to the corresponding recording region. A controller is coupled to at least one of the emitter system and at least one controllable guiding element of the input waveguide network and controls at least one optical characteristic of the input beam or the at least one guiding element, so as to guide the input beam from an in-coupling region to any selected one of the multiple out-coupling regions. Similar waveguide networks are provided for carrying reference and output beams.
    Type: Application
    Filed: February 22, 2021
    Publication date: November 9, 2023
    Inventors: Douglas James KELLY, Benn Charles THOMSEN, Dushyanth NARAYANAN, Antony Ian Taylor ROWSTRON, Andreas GEORGIOU
  • Publication number: 20230332886
    Abstract: Aspects of the subject disclosure are directed towards safely projecting a diffracted light pattern, such as in an infrared laser-based projection/illumination system. Non-diffracted (zero-order) light is refracted once to diffuse (defocus) the non-diffracted light to an eye safe level. Diffracted (non-zero-order) light is aberrated twice, e.g., once as part of diffraction by a diffracting optical element encoded with a Fresnel lens (which does not aberrate the non-diffracted light), and another time to cancel out the other aberration; the two aberrations may occur in either order. Various alternatives include upstream and downstream positioning of the diffracting optical element relative to a refractive optical element, and/or refraction via positive and negative lenses.
    Type: Application
    Filed: March 20, 2023
    Publication date: October 19, 2023
    Inventors: Andreas GEORGIOU, Joel Steven KOLLIN, Sing Bing KANG
  • Publication number: 20230314803
    Abstract: Examples are disclosed that relate to using an array of hot mirrors in an eye-imaging system. One example provides a head-mounted display system, comprising a frame, an eye-imaging camera supported on the frame, a switchable hot mirror array comprising a plurality of switchable hot mirrors configured to direct light reflecting from an eye toward the eye-imaging camera, and a controller configured to control switching of a reflectivity of each of the plurality of switchable hot mirrors.
    Type: Application
    Filed: April 4, 2022
    Publication date: October 5, 2023
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Benjamin Eliot LUNDELL, Joel Steven KOLLIN, Ishan CHATTERJEE, Maria Esther PACE, Mark Theodore BOLAS, Bernard Charles KRESS, Robert Thomas HELD, Andreas GEORGIOU, Christopher Charles AHOLT
  • Publication number: 20230244077
    Abstract: One disclosed example provides a near-eye display device. The near-eye display device comprises an eye tracking system configured to determine a position of an eye of a user relative to the near-eye display device, and a waveguide including at least an input coupler and an output coupler, the output coupler including a plurality of zones, each zone activatable via a dynamically controllable output coupling element of the zone. The near-eye display device further comprises an image source configured to output image light to the input coupler, and a controller configured to selectively activate one or more zones of the output coupler based at least on the position of the eye.
    Type: Application
    Filed: January 31, 2022
    Publication date: August 3, 2023
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Joel Steven KOLLIN, Ishan CHATTERJEE, Benjamin Eliot LUNDELL, Christopher Charles AHOLT, Maria Esther PACE, Andreas GEORGIOU, Robert Thomas HELD, Mark Theodore BOLAS
  • Publication number: 20230100656
    Abstract: This document relates to head mounted display devices. One example can include a housing configured to be positioned relative to a head and eye of a user and a transparent visual assembly positioned by the housing in front of the user's eye and comprising multiple eye tracking illuminators distributed across the transparent visual assembly and configured to emit non-visible light and multiple eye tracking detectors distributed across the transparent visual assembly and configured to detect the non-visible light reflected back from the eye of the user.
    Type: Application
    Filed: September 30, 2021
    Publication date: March 30, 2023
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Andreas GEORGIOU, Maria PACE, Bernard KRESS, Ishan CHATTERJEE, Joel KOLLIN, Mario POSSIWAN
  • Publication number: 20230048079
    Abstract: A multimode optical waveguide network comprises a parent waveguide and a plurality of child waveguides. Each waveguide is a multimode optical waveguide having a first surface region, multiple second surface regions, and at least one guiding element attached to a surface of the waveguide or embedded within the waveguide, each second surface region of the parent waveguide optically coupled to the first surface region of a corresponding child waveguide. The guiding element(s) of the parent waveguide is arranged to guide a beam, from or to its first surface region, to or from any selected second surface region of its multiple second surface regions. The guiding element(s) of each of the waveguides is configurable for selecting the second surface region of that waveguide and/or responsive to at least one beam characteristic for selecting the second surface region of that waveguide via modulation of the at least one beam characteristic.
    Type: Application
    Filed: February 22, 2021
    Publication date: February 16, 2023
    Inventors: Douglas James KELLY, Benn Charles THOMSEN, Dushyanth NARAYANAN, Antony Ian Taylor ROWSTRON, Andreas GEORGIOU
  • Publication number: 20230031857
    Abstract: This document relates to an optical device that uses adaptive optics as part of an optical system. The adaptive optics can be used to correct light rays that correspond to a portion of an eye box based on information received from an eye-tracking unit, and can also correct for aberrations in the optics in the optical device. The adaptive optics include corrective elements that can be modified using modifying elements to correct the angle of light rays, such that rays associated with a specific pupil position and gaze direction of a user's eye can be made parallel and ensure a high quality image is viewed by the user.
    Type: Application
    Filed: October 17, 2022
    Publication date: February 2, 2023
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Andreas Georgiou, Alfonsus D. Lunardhi, Joel Steven Kollin, Bernard C. Kress, Ishan Chatterjee, Mario Possiwan
  • Publication number: 20220413603
    Abstract: Examples are provided related to using multiplexed diffractive elements to improve eye tracking systems. One example provides a head-mounted display device comprising a see-through display system comprising a transparent combiner having an array of diffractive elements, and an eye tracking system comprising one or more light sources configured to direct light toward an eyebox of the see-through display system, and also comprising an eye tracking camera. The array of diffractive elements comprises a plurality of multiplexed diffractive elements configured to direct images of a respective plurality of different perspectives of the eyebox toward the eye tracking camera.
    Type: Application
    Filed: June 25, 2021
    Publication date: December 29, 2022
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Robert Thomas HELD, Andreas GEORGIOU, Bernard Charles KRESS, Joel Steven KOLLIN
  • Patent number: 11500200
    Abstract: This document relates to an optical device that uses adaptive optics as part of an optical system. The adaptive optics can be used to correct light rays that correspond to a portion of an eye box based on information received from an eye-tracking unit, and can also correct for aberrations in the optics in the optical device. The adaptive optics include corrective elements that can be modified using modifying elements to correct the angle of light rays, such that rays associated with a specific pupil position and gaze direction of a user's eye can be made parallel and ensure a high quality image is viewed by the user.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: November 15, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Andreas Georgiou, Alfonsus D. Lunardhi, Joel Steven Kollin, Bernard C. Kress, Ishan Chatterjee, Mario Possiwan
  • Patent number: 11487109
    Abstract: An image forming system includes a spatial light modulator (SLM) including a plurality of pixels. Each pixel is configured to diffract incident light and cause the diffracted light to exit the SLM, where a first diffraction order of light exiting the SLM passes through a first exit pupil and higher diffraction orders of light exiting the SLM pass through additional exit pupils having different positions from the first exit pupil. Control logic operatively coupled to the plurality of pixels is configured to control each pixel to control its modulation of the light incident on the pixel and cause the plurality of pixels to collectively form an image at each exit pupil. A light source is configured to emit incident light toward the SLM. A resampling layer is configured to subsample each pixel electrode with two or more samples per pixel to increase a spacing between each exit pupil.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: November 1, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Joel Steven Kollin, Andreas Georgiou
  • Patent number: 11467320
    Abstract: This document relates to head mounted display devices. One example can include a layer of individually controllable pixels that can be energized to emit light and a layer of lenses that are physically aligned over the pixels. The example can also include a layer of shutters interposed between the pixels and the lenses and configured to be independently transitioned between a transmissive state and an opaque state to limit paths of the emitted light that reach the layer of lenses.
    Type: Grant
    Filed: December 24, 2020
    Date of Patent: October 11, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Joel Steven Kollin, Andreas Georgiou, Brian K. Guenter, Charles Thomas Hewitt, Mario Possiwan, Ishan Chatterjee
  • Patent number: 11435503
    Abstract: This document relates to head mounted display devices. In one example the head mounted display device includes a light engine including an array of individually controllable pixels that can be energized to emit light. The example also includes an optical assembly physically aligned with the light engine and including a set of focusing elements facing toward the light engine and a different set of focusing elements facing away from the light engine.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: September 6, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Andreas Georgiou, Alfonsus D. Lunardhi, Joel Steven Kollin, Bernard C. Kress, Ishan Chatterjee, Mario Possiwan, Charles Thomas Hewitt, Brian K. Guenter, Maria Pace, Jacob Hadnett-Hunter
  • Publication number: 20220206191
    Abstract: This document relates to head mounted display devices. One example can include a layer of individually controllable pixels that can be energized to emit light and a layer of lenses that are physically aligned over the pixels. The example can also include a layer of shutters interposed between the pixels and the lenses and configured to be independently transitioned between a transmissive state and an opaque state to limit paths of the emitted light that reach the layer of lenses.
    Type: Application
    Filed: December 24, 2020
    Publication date: June 30, 2022
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Joel Steven KOLLIN, Andreas GEORGIOU, Brian K. GUENTER, Charles Thomas HEWITT, Mario POSSIWAN, Ishan CHATTERJEE
  • Publication number: 20220155587
    Abstract: An image forming system includes a spatial light modulator (SLM) including a plurality of pixels. Each pixel is configured to diffract incident light and cause the diffracted light to exit the SLM, where a first diffraction order of light exiting the SLM passes through a first exit pupil and higher diffraction orders of light exiting the SLM pass through additional exit pupils having different positions from the first exit pupil. Control logic operatively coupled to the plurality of pixels is configured to control each pixel to control its modulation of the light incident on the pixel and cause the plurality of pixels to collectively form an image at each exit pupil. A light source is configured to emit incident light toward the SLM. A resampling layer is configured to subsample each pixel electrode with two or more samples per pixel to increase a spacing between each exit pupil.
    Type: Application
    Filed: February 2, 2022
    Publication date: May 19, 2022
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Joel Steven KOLLIN, Andreas GEORGIOU
  • Patent number: 11327307
    Abstract: A head-mounted, near-eye display device includes a central display and a peripheral display. The central display creates a central image of a first resolution in a central eyebox. The peripheral display creates a peripheral image of a second resolution, lower than the first resolution, in a peripheral eyebox, different than the central eyebox.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: May 10, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Andreas Georgiou, Joel Steven Kollin, Bernard Charles Kress, Alfonsus D. Lunardhi, Sohaib Abdul Rehman, Charles Thomas Hewitt
  • Patent number: 11265534
    Abstract: The subject disclosure is directed towards controlling the intensity of illumination of a scene or part of a scene, including to conserve illumination power. Quality of depth data in stereo images may be measured with different illumination states; environmental conditions, such as ambient light, natural texture may affect the quality. The illumination intensity may be controllably varied to obtain sufficient quality while conserving power. The control may be directed to one or more regions of interest corresponding to an entire scene or part of a scene.
    Type: Grant
    Filed: February 8, 2014
    Date of Patent: March 1, 2022
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Adam G. Kirk, Christoph Rhemann, Oliver A. Whyte, Shahram Izadi, Sing Bing Kang, Andreas Georgiou
  • Patent number: 11262578
    Abstract: An image forming system includes a spatial light modulator (SLM) including a plurality of pixels. Each pixel is configured to diffract incident light and cause the diffracted light to exit the SLM, where a first diffraction order of light exiting the SLM passes through a first exit pupil and higher diffraction orders of light exiting the SLM pass through additional exit pupils having different positions from the first exit pupil. Control logic operatively coupled to the plurality of pixels is configured to control each pixel to control its modulation of the light incident on the pixel and cause the plurality of pixels to collectively form an image at each exit pupil. A light source is configured to emit incident light toward the SLM. A resampling layer is configured to subsample each pixel electrode with two or more samples per pixel to increase a spacing between each exit pupil.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: March 1, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Joel Steven Kollin, Andreas Georgiou