Patents by Inventor Adrian Travis

Adrian Travis 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: 20210116776
    Abstract: A liquid crystal (LC) mixture for a pitch variable optical element is provided. The LC mixture includes a host LC and one or more LC dimers dissolved as a guest in the host LC. The host LC and the one or more LC dimers have respective dielectric anisotropies of opposite signs in nematic phase. A net dielectric anisotropy of the LC mixture is substantially neutral.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 22, 2021
    Inventors: Yingfei JIANG, Afsoon JAMALI, Changwon JANG, Adrian TRAVIS, Andrew MAIMONE, Lu LU
  • Patent number: 10983346
    Abstract: Apparatuses and systems including curved optical waveguides, and methods for use include an output-grating of a curved waveguide that includes a spatially modulated grating period configured to cause, for each beam of light corresponding to an image coupled into a bulk-substrate of the curved waveguide by an input-grating, corresponding rays of light output from different locations of the output-grating to be substantially collimated. Adaptive optics of a display engine compensate for aberrations that vary over a field-of-view associated with light corresponding to the image out-coupled by the output-grating. Further, a curved portion of the curved waveguide is designed to keep internally reflected light below a critical angle to prevent inadvertent out-coupling thereof. Further, curved surfaces of the curved waveguide can include polynomial surfaces to compensate for lateral color errors and distortion.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: April 20, 2021
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Tuomas Vallius, Adrian Travis, Tero Ollikainen, Dmitry Reshidko
  • Publication number: 20210080726
    Abstract: A display device includes a projector and a display that has a first surface and a second surface. The projector is configured to project image light toward the display. The display is configured to output diffused image light from the first surface and to transmit ambient light from the second surface to the first surface. The display device also includes an optical assembly that has a substrate with substantially uniform thickness. The optical assembly is configured to receive the diffused image light and transmit a portion of the diffused image light output from the first surface of the display at a first optical power. The optical assembly is also configured to receive the ambient light and transmit a portion of the ambient light through the optical assembly at a second optical power that is less than the first optical power.
    Type: Application
    Filed: March 5, 2020
    Publication date: March 18, 2021
    Inventors: Ying GENG, Brian WHEELWRIGHT, Jacques GOLLIER, Yusufu Njoni Bamaxam SULAI, Babak AMIRSOLAIMANI, Weichuan GAO, Gang LI, Mengfei WANG, Adrian TRAVIS
  • Patent number: 10890823
    Abstract: An optical device is provided. The optical device includes an optical grating. The optical grating includes two electrodes arranged opposite to each other and a liquid crystal (LC) composition sandwiched between the electrodes. The two electrodes provide a driving voltage to the optical grating. The LC mixture includes a host LC and one or more LC dimers dissolved as a guest in the host LC. The host LC and the one or more LC dimers have respective dielectric anisotropies of opposite signs in nematic phase. A net dielectric anisotropy of the LC mixture is substantially neutral at a predetermined temperature.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: January 12, 2021
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Yingfei Jiang, Afsoon Jamali, Changwon Jang, Adrian Travis, Andrew Maimone, Lu Lu
  • Publication number: 20200371282
    Abstract: A device for illuminating a spatial light modulator includes a light source and an optical element. The light source is configured to provide illumination light. The optical element has a first surface, a second surface that is distinct from and non-parallel to the first surface, and a third surface that is distinct from and non-parallel to the first surface and the second surface. The optical element is configured to receive the illumination light at the first surface, propagate the illumination light via total internal reflection, and output the illumination light from the third surface. Also disclosed is a method performed by the device.
    Type: Application
    Filed: May 12, 2020
    Publication date: November 26, 2020
    Inventors: Ying GENG, Adrian TRAVIS, Gang LI
  • Patent number: 10582172
    Abstract: An optical system includes a light source, a film positioned to be illuminated by light from the light source, the film including a plurality of Bragg gratings configured to redirect the light, and an actuator configured to apply a shearing force to the film. The shearing force manipulates an orientation of the plurality of Bragg gratings to change an extent to which the plurality of Bragg gratings redirects the light and to thereby re-position a pupil at which the light converges after redirection by the plurality of Bragg gratings.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: March 3, 2020
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventor: Adrian Travis
  • Patent number: 10459233
    Abstract: A display includes a projector configured to provide light of a virtual image, a waveguide into which the light of the virtual image is injected at an injection angle by the projector, and a combiner disposed along the waveguide and configured to redirect the light of the virtual image. The waveguide is configured to emit the light at a point established by the injection angle. The combiner is further configured to allow ambient light from beyond the waveguide to pass through the combiner. The waveguide constrains the light of the virtual image through total internal reflection along a curved path for the light between the projector and the combiner.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: October 29, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Adrian Travis, Joel S. Kollin, Andreas Georgiou
  • Patent number: 10248081
    Abstract: A holographic display includes a pixel array including one or more pixels, a holographic data source, a drive array, and a light source. Each pixel includes a phase-modulating structure and an amplitude-modulating structure. The holographic data source is configured to supply a holographic drive signal. The holographic drive signal includes, for each pixel in each of a plurality of time-varying holographic image frames, a phase component defining phase modulation for the pixel and an amplitude component defining amplitude modulation for the pixel. The drive array is configured to, for each pixel in each holographic image frame, modulate the phase-modulating structure according to the phase component and modulate the amplitude-modulating structure according to the amplitude component. The light source is configured to output coherent light to illuminate the one or more pixels of the pixel array.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: April 2, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Andreas Georgiou, Adrian Travis
  • Publication number: 20190072767
    Abstract: Apparatuses and systems including curved optical waveguides, and methods for use therewith, are described herein. An output-grating of a curved waveguide includes a spatially modulated grating period configured to cause, for each beam of light corresponding to an image coupled into a bulk-substrate of the curved waveguide by an input-grating, corresponding rays of light output from different locations of the output-grating to be substantially collimated. Adaptive optics of a display engine compensate for aberrations that vary over a field-of-view associated with light corresponding to the image out-coupled by the output-grating. Further, a curved portion of the curved waveguide is designed to keep internally reflected light below a critical angle to prevent inadvertent out-coupling thereof. Further, curved surfaces of the curved waveguide can include polynomial surfaces to compensate for lateral color errors and distortion.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 7, 2019
    Inventors: Tuomas Vallius, Adrian Travis, Tero Ollikainen, Dmitry Reshidko
  • Patent number: 10210844
    Abstract: Embodiments are disclosed for display devices including holographic optical elements for directing light toward image producing panels. An example display device includes a phase modulating image producing panel, and a holographic optical element configured to receive collimated light and to output converging light toward the phase modulating image producing panel, the phase modulating image producing panel being configured to use at least a portion of the converging light to produce an image with collimated or diverging light.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: February 19, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Joel S. Kollin, Andreas Georgiou, Adrian Travis, Douglas Christopher Burger
  • Patent number: 10178378
    Abstract: A near-eye display device comprises a left-eye optical system and a right-eye optical system. Each of the left-eye optical system and the right-eye optical system comprises a holographic optical component positioned in a field of view of a user eye, an image source configured to emit imaging light, and an alignment optical component, wherein projection beam path between the image source and the light-deflecting optical component and an alignment beam path between the alignment optical component and the light-deflecting component share a common optical path.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: January 8, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventor: Adrian Travis
  • Publication number: 20180338122
    Abstract: An optical system includes a light source, a film positioned to be illuminated by light from the light source, the film including a plurality of Bragg gratings configured to redirect the light, and an actuator configured to apply a shearing force to the film. The shearing force manipulates an orientation of the plurality of Bragg gratings to change an extent to which the plurality of Bragg gratings redirects the light and to thereby re-position a pupil at which the light converges after redirection by the plurality of Bragg gratings.
    Type: Application
    Filed: May 22, 2017
    Publication date: November 22, 2018
    Inventor: Adrian Travis
  • Publication number: 20180259904
    Abstract: A holographic display includes a pixel array including one or more pixels, a holographic data source, a drive array, and a light source. Each pixel includes a phase-modulating structure and an amplitude-modulating structure. The holographic data source is configured to supply a holographic drive signal. The holographic drive signal includes, for each pixel in each of a plurality of time-varying holographic image frames, a phase component defining phase modulation for the pixel and an amplitude component defining amplitude modulation for the pixel. The drive array is configured to, for each pixel in each holographic image frame, modulate the phase-modulating structure according to the phase component and modulate the amplitude-modulating structure according to the amplitude component. The light source is configured to output coherent light to illuminate the one or more pixels of the pixel array.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 13, 2018
    Applicant: Microsoft Technology Licensing, LLC
    Inventors: Andreas Georgiou, Adrian Travis
  • Patent number: 10067346
    Abstract: A display device includes an optical sensor configured to image a user eye, an image source configured to provide image light, a holographic film including a plurality of holograms, and a controller. Each hologram is recorded with a same reference beam but recorded differently so as to differently diffract image light received from the light source. The controller is configured to determine, via the optical sensor, a position of the user eye, and adjust, based on the determined position of the user eye, a state of the holographic film such that a particular hologram of the plurality of holograms diffracts image light to the position of the user eye.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: September 4, 2018
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventor: Adrian Travis
  • Patent number: 10025089
    Abstract: A display system produces three-dimensional images. The display system includes a waveguide, and a light source that injects light into the waveguide. A switchable grating allows individual positions in the grating in a two-dimensional array to be turned on and off. A controller configured to spatially modulate the switchable grating so as to control where light exits the waveguide. An eye tracking module tracks eye position of a viewer. The controller uses the eye position to control switching of the grating.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 17, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Adrian Travis
  • Patent number: 10012844
    Abstract: A backlight unit includes a waveguide assembly having a first wedge and a birefringent wedge disposed adjacent to, and arranged nose-to-tail with, the first wedge, to define an interface of the waveguide assembly. The birefringent wedge has different indices of refraction for light propagating through the waveguide assembly in first and second polarization states. The first wedge is configured to propagate the light in the second polarization state at a different speed than the birefringent wedge. A liquid crystal layer is configured to selectively switch the light between the first and second polarization states.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: July 3, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Adrian Travis
  • Patent number: 10012776
    Abstract: An optical filter includes a first film having an upper surface, a lower surface, a first side, and a second side. A second film is included that has an upper surface, a lower surface, a first side, and a second side. A third film is included that has an upper surface, a lower surface, a first side, and a second side. The first side of the first film is connected to the second side of the second film. The first side of the second film is connected to the second side of the third film. The lower surface of the first film is optically adjacent to the upper surface of the second film. The lower surface of the second film is optically adjacent to the upper surface of the third film. Methods of manufacture and use are also described.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: July 3, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Adrian Travis
  • Publication number: 20170315362
    Abstract: A display includes a projector configured to provide light of a virtual image, a waveguide into which the light of the virtual image is injected at an injection angle by the projector, and a combiner disposed along the waveguide and configured to redirect the light of the virtual image. The waveguide is configured to emit the light at a point established by the injection angle. The combiner is further configured to allow ambient light from beyond the waveguide to pass through the combiner. The waveguide constrains the light of the virtual image through total internal reflection along a curved path for the light between the projector and the combiner.
    Type: Application
    Filed: July 14, 2017
    Publication date: November 2, 2017
    Inventors: Adrian Travis, Joel S. Kollin, Andreas Georgiou
  • Publication number: 20170295362
    Abstract: A near-eye display device comprises a left-eye optical system and a right-eye optical system. Each of the left-eye optical system and the right-eye optical system comprises a holographic optical component positioned in a field of view of a user eye, an image source configured to emit imaging light, and an alignment optical component, wherein projection beam path between the image source and the light-deflecting optical component and an alignment beam path between the alignment optical component and the light-deflecting component share a common optical path.
    Type: Application
    Filed: April 12, 2016
    Publication date: October 12, 2017
    Applicant: Microsoft Technology Licensing, LLC
    Inventor: Adrian Travis
  • Patent number: 9759919
    Abstract: A display includes a projector configured to provide light of a virtual image, a waveguide into which the light of the virtual image is injected at an injection angle by the projector, and a combiner disposed along the waveguide and configured to redirect the light of the virtual image. The waveguide is configured to emit the light at a point established by the injection angle. The combiner is further configured to allow ambient light from beyond the waveguide to pass through the combiner. The waveguide constrains the light of the virtual image through total internal reflection along a curved path for the light between the projector and the combiner.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: September 12, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Adrian Travis, Joel S. Kollin, Andreas Georgiou