Patents by Inventor Celedonia Krawczyk

Celedonia Krawczyk 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: 20240069340
    Abstract: A display system and light control layer is described. The display system includes an optical component having a reflective surface. A light control layer is disposed on a first surface of the optical component on an optical path of sunlight to the reflective surface. The light control layer includes a louvre structure including an array of louvres. Each louvre is arranged at an orientation angle relative to the first surface. The separation between adjacent/neighbouring louvres is such that the distal end/edge of one louvre overlaps the proximal end/edge of the adjacent/neighbouring louvre.
    Type: Application
    Filed: July 31, 2023
    Publication date: February 29, 2024
    Inventors: Celedonia KRAWCZYK, Yiren XIA, Timothy SMEETON, Jamieson CHRISTMAS
  • Publication number: 20230418060
    Abstract: A light turning element and a method fabricating such a light turning element are described. The light turning element comprises a layer of liquid crystal material. The layer of liquid crystal material defining a plane. The layer of liquid crystal material is configured such that an angle (?) between a director (n) of the liquid crystal material and a first dimension (x) is an oscillating function of position in the first dimension x. The first dimension x is a dimension within the plane.
    Type: Application
    Filed: May 12, 2023
    Publication date: December 28, 2023
    Inventors: Jamieson Christmas, Neil Collings, Celedonia Krawczyk, Tim Smeeton
  • Publication number: 20230418053
    Abstract: A display system comprises a two-dimensional pupil expander. The pupil expander comprises a first replicator, a coupling element and a second replicator. The first replicator is arranged to receive a holographic light field and replicate the holographic light field in a first direction. The holographic light field is diverging. The coupling element comprises a reflective-transmissive surface arranged to receive the output of the first replicator and a reflective surface, opposing the reflective-transmissive surface, in order to guide at least a portion of the holographic light field by internal reflection therebetween to an output port of the coupling element and to reduce the size of the holographic light field in a second direction. The second replicator has an input port arranged to receive the output of the coupling element and replicate the holographic light field in the second direction, wherein the second direction is perpendicular to the first direction.
    Type: Application
    Filed: May 17, 2023
    Publication date: December 28, 2023
    Inventors: Alexander COLE, Rakesh MAHARJAN, Neil COLLINGS, Celedonia KRAWCZYK, Timothy SMEETON, Yiren XIA
  • Publication number: 20230367115
    Abstract: A pupil expander for a head-up display. The head-up display has an eye-box having a first dimension and second dimension. The pupil expander comprises a pair of first waveguides each arranged to replicate a pupil in the first dimension of the eye-box. Each waveguide is elongated and tapered in the direction of elongation such that its input end is narrower than its output end. The first waveguides are arranged so that their input ends are substantially proximate each other and their respective output ends are substantially distal from each other.
    Type: Application
    Filed: April 24, 2023
    Publication date: November 16, 2023
    Inventors: Rakesh MAHARJAN, Alexander COLE, Neil COLLINGS, Timothy SMEETON, Celedonia KRAWCZYK
  • Publication number: 20230324683
    Abstract: A head-up display for a vehicle comprises an optical component having a reflective surface arranged, during head-up display operation, in a configuration that is conducive to sunlight glare. A light control layer is disposed on the optical component to receive sunlight on an optical path to the reflective surface. The light control layer comprises a sunlight-receiving surface and a core material separating an array of louvres. The sunlight-receiving surface of the light control layer is serrated in coordination with the array of louvres so as to deflect received sunlight away from the eye-box of the head-up display.
    Type: Application
    Filed: May 31, 2023
    Publication date: October 12, 2023
    Inventors: Timothy Smeeton, Yiren Xia, Celedonia Krawczyk
  • Publication number: 20230314802
    Abstract: A head-up display for a vehicle comprises an optical component having a reflective surface arranged, during head-up display operation, in a configuration that is conducive to sunlight glare. A light control layer is disposed on the optical component to receive sunlight on an optical path to the reflective surface. The light control layer comprises a sunlight-receiving surface and a core material separating an array of louvres. The sunlight-receiving surface of the light control layer is serrated in coordination with the array of louvres so as to deflect received sunlight away from the eye-box of the head-up display.
    Type: Application
    Filed: October 31, 2022
    Publication date: October 5, 2023
    Inventors: Timothy Smeeton, Yiren Xia, Celedonia Krawczyk
  • 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: 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