Patents by Inventor Ruisheng Lin

Ruisheng Lin 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: 20240168283
    Abstract: A holographic system comprises a display device and a waveguide pupil expander. The display device is arranged to display a hologram and to output spatially modulated light in accordance with the hologram. The waveguide pupil expander is configured to receive spatially modulated light from the display device at the input port thereof and to expand the viewing window of the system. The waveguide pupil expander comprises first and second substantially planar reflective surfaces arranged in parallel having an optically transparent material therebetween. The first reflective surface is fully reflective and the second reflective surface is partially reflective such that light is guided from the input port to an output port at the second reflective surface by a series of internal reflections. The optically transparent material is formed by a layered glass structure arranged to maintain the integrity of the waveguide in the event of breakage of glass.
    Type: Application
    Filed: August 17, 2022
    Publication date: May 23, 2024
    Inventors: Timothy SMEETON, Jamieson CHRISTMAS, Daniel BURNHAM, Ruisheng LIN, Rakesh MAHARJAN
  • Publication number: 20240094676
    Abstract: A method including determining, from a first hologram of an image, a second hologram of a portion of the image. The method includes providing or receiving the first hologram of the image. The method further includes propagating a complex field corresponding to the first hologram from a hologram plane to an image plane. The method further includes modifying amplitudes of the complex field in the image plane by setting amplitude components of the complex field that correspond to regions of the image that are outside of the portion of the image to be zero. The method further includes propagating the modified complex field back from the image plane to the hologram plane thereby obtaining the second hologram of the portion of the image.
    Type: Application
    Filed: August 31, 2023
    Publication date: March 21, 2024
    Inventors: Ruisheng LIN, Timothy SMEETON, Jamieson CHRISTMAS
  • Publication number: 20240019625
    Abstract: A method is provided of manufacturing a waveguide comprising an input port, an output port, a transparent medium having a first refractive index (n1), a first pair of opposing surfaces and a second pair of opposing surfaces. The method comprises polishing at least one surface of the second pair of opposing surfaces to achieve a separation therebetween, bonding a protective layer to at least one polished surface of the second pair of opposing surfaces; and polishing at least one surface of the first pair of opposing surfaces to achieve a separation therebetween.
    Type: Application
    Filed: June 15, 2023
    Publication date: January 18, 2024
    Inventors: Edward BOARDMAN, Timothy SMEETON, Ruisheng LIN
  • Publication number: 20230324705
    Abstract: A diffractive structure arranged to spatially modulate light transformable by a viewing system into a target image. The diffractive structure is configured to generate a plurality of discrete light patterns. Each light pattern corresponds to a different part of the target image. The shape of each discrete light pattern substantially corresponds to the shape of an entrance aperture of the viewing system.
    Type: Application
    Filed: February 2, 2022
    Publication date: October 12, 2023
    Inventors: Jamieson Christmas, Máté Karner, Ruisheng Lin, Timothy Smeeton
  • Publication number: 20230194874
    Abstract: A display system comprises a waveguide forming a pupil expander. The waveguide comprises a pair of opposing surfaces arranged to guide a diffracted light field therebetween by internal reflection. An input port of the waveguide is arranged to receive light from a display system. An output port of the waveguide is formed by a first transmissive-reflective element of a first surface of the pair of opposing surfaces. The first transmissive-reflective element is such that the diffracted light field is divided at each internal reflection and a plurality of replicas of the diffracted light field are transmitted out of the waveguide through the output port. The input port comprises a second transmissive-reflection element arranged to receive at least a portion of the light from the display system.
    Type: Application
    Filed: December 6, 2022
    Publication date: June 22, 2023
    Inventors: Ruisheng Lin, Timothy Smeeton, Yiren Xia, Jamieson Christmas
  • Publication number: 20230088953
    Abstract: Disclosed embodiments include a display system comprising a first waveguide pupil expander comprising an input port, output port, a first pair of parallel surfaces, and a second pair of parallel surfaces. The first pair of parallel surfaces is orthogonal to the second pair of parallel surfaces and arranged to light guide a diffracted or diverging (e.g. holographic) light field from the input port to the output port by internal reflection therebetween. A first surface of the first pair of parallel surfaces is partially transmissive-reflective such that the light field is divided at each internal reflection and a plurality of replicas of the light field is transmitted through a region of the first surface that forms the output port. The second pair of parallel surfaces is also arranged to light guide the light field from the input port to the output port by at least one internal reflection.
    Type: Application
    Filed: September 13, 2022
    Publication date: March 23, 2023
    Inventors: Timothy Smeeton, Jamieson Christmas, Rakesh Maharjan, Celedonia Krawczyk, Daniel Burnham, Ruisheng Lin
  • Publication number: 20230091896
    Abstract: A system and method includes a display device comprising a spatial light modulator arranged to output spatially modulated light to form an image. The system further includes a waveguide pupil expander configured to receive spatially modulated light from the display device at an input port thereof and to expand the viewing window of the system. The system further comprises a controller. In examples, the controller is configured to control the spatially modulated light output by the display device, such as to control (e.g., turn off) a light source of the display device, in response to a signal indicating detection of the breakage of glass. The signal indicating detection of the breakage of glass may be generated in response to the detection of stray laser light of the holographic system by an eye-tracking system.
    Type: Application
    Filed: August 11, 2022
    Publication date: March 23, 2023
    Inventors: Timothy Smeeton, Jamieson Christmas, Daniel Burnham, Ruisheng Lin, Rakesh Maharjan
  • Publication number: 20230060564
    Abstract: Systems and method disclosed herein include, among other features, receiving an image for display within a display area of a display system, determining a first image component of the image, calculating a hologram of the image, displaying the hologram on a display device and spatially modulating light in accordance with the displayed hologram, and propagating the spatially modulated light through a pupil expander arranged to provide a plurality of different light propagation paths for the spatially modulated light from the display device to the viewing area, wherein each light propagation path corresponds to a respective continuous region of the image owing to the angular distribution of light from the hologram.
    Type: Application
    Filed: July 7, 2022
    Publication date: March 2, 2023
    Inventors: Timothy Smeeton, Jamieson Christmas, Daniel Burnham, Ruisheng Lin, Gavin Fowler
  • Publication number: 20220404770
    Abstract: A light engine arranged to form an image visible from a viewing window, the light engine comprising a display device for displaying a hologram of the image and spatially modulating light based on the hologram. The hologram is configured to angularly distribute spatially-modulated light of the image based on position of image content, where angular channels of the spatially-modulated light correspond with respective continuous regions of the image. The light engine further comprises a waveguide pupil expander for receiving the spatially-modulated light and providing a plurality of light propagation paths for the spatially-modulated light from the display device to the viewing window, and a control device between the waveguide and the viewing window. The control device comprises an aperture arranged such that a first viewing position receives a first channel of spatially-modulated light and a second viewing position receives a second channel of spatially-modulated light.
    Type: Application
    Filed: May 19, 2022
    Publication date: December 22, 2022
    Inventors: Jamieson Christmas, Timothy Smeeton, Ruisheng Lin, Celedonia Krawczyk
  • Publication number: 20220252879
    Abstract: Display system and methods including a display device arranged to display a hologram and spatially modulate light and a hologram engine arranged to receive contribution information identifying contributory and non-contributory areas of the display device based on the location of an entrance pupil. The contributory areas of the display device propagate light passing through the entrance pupil at the determined location. The non-contributory areas of the display device propagate light stopped by the entrance pupil at the determined location. The contribution information identifies (i) at least one primary contributory area of the display device that contributes to a primary image and (ii) at least one secondary contributory area of the display device that contributes to a secondary image. The hologram engine is arranged to determine a hologram based on the at least one primary contributory area of the display device identified by the processing engine.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 11, 2022
    Inventors: Jamieson Christmas, Máté Karner, Ruisheng Lin, Timothy Smeeton