Patents by Inventor Jonathan David Waldern

Jonathan David Waldern 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: 11662590
    Abstract: An eye tracker having a first waveguide for propagating illumination light along a first waveguide path and propagating image light reflected from at least one surface of an eye along a second waveguide path. At least one grating lamina for deflecting the illumination light out of the first waveguide path towards the eye and deflecting the image light into the second waveguide path towards a detector is disposed adjacent an optical surface of the waveguide.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: May 30, 2023
    Assignee: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
  • Publication number: 20230114549
    Abstract: One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lumina configured to extract light from the second substrate along the second direction, wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.
    Type: Application
    Filed: May 3, 2022
    Publication date: April 13, 2023
    Inventors: Robert D. Brown, Alastair John Grant, Wyatt L. Hendrick, Milan Momcilo Popovich, James H. Stanley, Jonathan David Waldern
  • Publication number: 20230078253
    Abstract: Improvements to gratings for use in waveguides and methods of producing them are described herein. Deep surface relief gratings (SRGs) may offer many advantages over conventional SRGs and Bragg gratings, an important one being a higher S-diffraction efficiency. In one embodiment, deep SRGs can be implemented as polymer surface relief gratings or evacuated Bragg gratings (EBGs). EBGs can be formed by first recording a holographic polymer dispersed liquid crystal (HPDLC) grating. Removing the liquid crystal from the cured grating provides a polymer surface relief grating. Polymer surface relief gratings have many applications including for use in waveguide-based displays.
    Type: Application
    Filed: September 12, 2022
    Publication date: March 16, 2023
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich, Shibu Abraham, Baeddan George Hill, Tsung-Jui Ho
  • Publication number: 20230081115
    Abstract: One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lamina configured to extract light from the second substrate along the second direction; wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.
    Type: Application
    Filed: September 19, 2022
    Publication date: March 16, 2023
    Applicants: DigiLens Inc., Rockwell Collins, Inc.
    Inventors: Robert D. Brown, Alastair John Grant, Wyatt L. Hendrick, Milan Momcilo Popovich, James H. Stanley, Jonathan David Waldern
  • Patent number: 11604314
    Abstract: A waveguide apparatus, comprises: disposed in at least one layer: an input coupler; a first fold grating; a second fold grating; an output coupler; and a source of light optically coupled to the waveguide providing at least first and second polarizations of the light and at least one wavelength. The input coupler is configured to cause the first polarization light to travel along a first total internal reflection (TIR) path and the second polarization light to travel along a second TIR path.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: March 14, 2023
    Assignee: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
  • Patent number: 11592614
    Abstract: Improvements to gratings for use in waveguides and methods of producing them are described herein. Deep surface relief gratings (SRGs) may offer many advantages over conventional SRGs and Bragg gratings, an important one being a higher S-diffraction efficiency. In one embodiment, deep SRGs can be implemented as polymer surface relief gratings or evacuated Bragg gratings (EBGs). EBGs can be formed by first recording a holographic polymer dispersed liquid crystal (HPDLC) grating. Removing the liquid crystal from the cured grating provides a polymer surface relief grating. Polymer surface relief gratings have many applications including for use in waveguide-based displays.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: February 28, 2023
    Assignee: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich, Shibu Abraham, Baeddan George Hill, Tsung-Jui Ho
  • Patent number: 11586046
    Abstract: An optical display, including a first waveguide having a first set of surfaces, an input grating, a fold grating, and an output grating; an image input image node assembly; and a prismatic relay optics is provided. The prismatic relay optics may be configured to be optomechanically connected to the waveguide and the input image node assembly. The optical display is may also be configured to operate alone or as integrated with a headpiece to be used as a HUD. The HUD may have a first and a second configuration wherein the waveguide is decoupled or coupled.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: February 21, 2023
    Assignee: DigiLens Inc.
    Inventors: Jonathan David Waldern, Milan Momcilo Popovich, Alastair John Grant
  • Patent number: 11579455
    Abstract: A near eye optical display includes a waveguide comprising a first surface and a second surface, an input coupler, a fold grating, and an output grating. The input coupler is configured to receive collimated light from a display source and to cause the light to travel within the waveguide via total internal reflection between the first surface and the second surface to the fold grating; the fold grating is configured to provide pupil expansion in a first direction and to direct the light to the output grating via total internal reflection between the first surface and the second surface; and the output grating is configured to provide pupil expansion in a second direction different than the first direction and to cause the light to exit the waveguide from the first surface or the second surface.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: February 14, 2023
    Assignees: Rockwell Collins, Inc., Digilens Inc.
    Inventors: James H. Stanley, Jonathan David Waldern, Milan Momcilo Popovich, Alastair John Grant, Steven J. Robbins
  • Patent number: 11573483
    Abstract: Systems integrating display resolution-multiplication solutions can be implemented in a variety of different ways. In many embodiments, the system includes an image projector for projecting image light, an image processor for computing a native image and at least one image shifted in a predefined direction, and at least one switchable grating capable of being switched between diffracting and non-diffracting states. In some embodiments, the switchable grating is optically coupled to the image projector. In a number of embodiments, the switchable gratings have a first configuration for propagating the native image light and at least one other configuration for propagating shifted image light having an angular displacement corresponding to the image shift in a predefined direction. By displaying the native and shifted images sequentially within a human eye integration period, the display resolution can be multiplied.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: February 7, 2023
    Assignee: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich
  • Publication number: 20230030594
    Abstract: Systems and methods for fabricating optical elements in accordance with various embodiments of the invention are illustrated. One embodiment includes a method for fabricating an optical element, the method including providing a first optical substrate, depositing a first layer of a first optical recording material onto the first optical substrate, applying an optical exposure process to the first layer to form a first optical structure, temporarily erasing the first optical structure, depositing a second layer of a second optical recording material, and applying an optical exposure process to the second layer to form a second optical structure, wherein the optical exposure process includes using at least one light beam traversing the first layer.
    Type: Application
    Filed: July 29, 2022
    Publication date: February 2, 2023
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich
  • Patent number: 11561409
    Abstract: An Electrically Switchable Bragg Grating (ESBG) despeckler device comprising at least one ESBG element recorded in a hPDLC sandwiched between transparent substrates to which transparent conductive coatings have been applied. At least one of said coatings is patterned to provide a two-dimensional array of independently switchable ESBG pixels. Each ESBG pixel has a first unique speckle state under said first applied voltage and a second unique speckle state under said second applied voltage.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: January 24, 2023
    Assignee: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, John James Storey
  • Patent number: 11543594
    Abstract: Systems and methods for providing holographic waveguide display using integrated gratings in accordance with various embodiments of the invention are illustrated. One embodiment includes a waveguide display including a source of light, and a first waveguide including a grating structure including first and second gratings, and an input coupler configured to couple a first field-of-view portion of light, and couple a second field-of-view portion of light, wherein the first grating is configured to provide beam expansion in a first direction for the first field-of-view portion of light, and provide beam expansion in the first direction and beam extraction towards a viewer for the second field-of-view portion of light, the second grating is configured to provide beam expansion in a second direction for the second field-of-view portion of light, and provide beam expansion in the second direction and beam extraction towards a viewer for the first field-of-view portion of light.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: January 3, 2023
    Assignee: DigiLens Inc.
    Inventors: Alastair John Grant, Jonathan David Waldern, Milan Momcilo Popovich, Sihui He, Edward Lao, Roger Allen Conley Smith
  • Publication number: 20220404538
    Abstract: Systems and methods for holographic waveguide backlights in accordance with various embodiments of the invention are illustrated. One embodiment includes an optical illumination device including at least one waveguide, a source of light optically coupled to the at least one waveguide configured to emit light having a first polarization state, a first plurality of grating elements for diffracting the light having the first polarization state out of the at least one waveguide into a first set of output paths, a second plurality of grating elements for diffracting the light having the first polarization state light out of the at least one waveguide into a second set of output paths, and at least one input coupler configured to couple at least a portion of the light having the first polarization state towards the first and second pluralities of grating elements.
    Type: Application
    Filed: June 30, 2022
    Publication date: December 22, 2022
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Milan Popovich, Alastair John Grant
  • Patent number: 11513350
    Abstract: Various embodiments of waveguide devices are described. A debanding optic may be incorporated into waveguide devices, which may help supply uniform output illumination. Accordingly, various waveguide devices are able to output a substantially flat illumination profile eliminating or mitigating banding effects.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: November 29, 2022
    Assignee: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich
  • Patent number: 11513077
    Abstract: A general purpose sensor architecture integrating a surface enhanced Raman spectroscopy (SERS) substrate, a diffractive laser beam delivery substrate and a diffractive infrared detection substrate is provided that can be used to implement a low-cost, compact lab-on-a-chip biosensor that can meet the needs of large-scale infectious disease testing. The sensor architecture can also be used in any other application in which molecules present in the liquid, gaseous or solid phases need to be characterized reliably, cost-effectively and with minimal intervention by highly skilled personnel.
    Type: Grant
    Filed: October 13, 2021
    Date of Patent: November 29, 2022
    Inventor: Jonathan David Waldern
  • Patent number: 11487131
    Abstract: A device for reducing laser speckle using a micro scanner and a holographic diffuser. The micro scanner includes a first transparent optical substrate with an input surface and an output surface and a second transparent optical substrate with an input surface and an output surface and a variable refractive index medium sandwiched between the output surface of the first substrate and the input surface of the second substrate. Transparent electrodes are applied to the output surface of the first substrate and the input surface of the second substrate. The electrodes are coupled to a voltage generator. The input surface of the first substrate is optically coupled to a laser source. The input surface of the second substrate is configured as an array of prismatic elements. At least one of the input surface of the first substrate or the output surfaces of the second substrate is planar.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: November 1, 2022
    Assignee: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern
  • Patent number: 11480788
    Abstract: A light field display, having at least one laser emitter, an optical modulator for modulating light from the laser emitter with video information; a beam focus modulator; an array of beam scanning elements; an electrically controllable beam focus modulator; and at least one at least one waveguide having at least one transparent substrate, an input grating and an output grating for extracting light from the waveguide; and an eye tracker is provided.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: October 25, 2022
    Assignee: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
  • Publication number: 20220317356
    Abstract: An apparatus for displaying an image, including: an input image node configured to provide at least a first and a second image modulated lights; and a holographic waveguide device configured to propagate the at least one of the first and second image modulated lights in at least a first direction. The holographic waveguide device includes: at least a first and second interspersed multiplicities of grating elements disposed in at least one layer, the first and second grating elements having respectively a first and a second prescriptions. The first and second multiplicity of grating elements are configured to deflect respectively the first and second image modulated lights out of the at least one layer into respectively a first and a second multiplicities of output rays forming respectively a first and second FOV tiles.
    Type: Application
    Filed: June 22, 2022
    Publication date: October 6, 2022
    Applicants: Rockwell Collins, Inc., DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant, Wyatt L. Hendrick, James H. Stanley
  • Patent number: 11460621
    Abstract: An apparatus for displaying an image, including: an input image node configured to provide at least a first and a second image modulated lights; and a holographic waveguide device configured to propagate the at least one of the first and second image modulated lights in at least a first direction. The holographic waveguide device includes: at least a first and second interspersed multiplicities of grating elements disposed in at least one layer, the first and second grating elements having respectively a first and a second prescriptions. The first and second multiplicity of grating elements are configured to deflect respectively the first and second image modulated lights out of the at least one layer into respectively a first and a second multiplicities of output rays forming respectively a first and second FOV tiles.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: October 4, 2022
    Assignees: ROCKWELL COLLINS, INC., DIGILENS INC.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant, Wyatt L. Hendrick, James H. Stanley
  • Publication number: 20220308352
    Abstract: A near eye optical display includes a waveguide comprising a first surface and a second surface, an input coupler, a fold grating, and an output grating. The input coupler is configured to receive collimated light from a display source and to cause the light to travel within the waveguide via total internal reflection between the first surface and the second surface to the fold grating; the fold grating is configured to provide pupil expansion in a first direction and to direct the light to the output grating via total internal reflection between the first surface and the second surface; and the output grating is configured to provide pupil expansion in a second direction different than the first direction and to cause the light to exit the waveguide from the first surface or the second surface.
    Type: Application
    Filed: April 11, 2022
    Publication date: September 29, 2022
    Inventors: James H. STANLEY, Jonathan David WALDERN, Milan Momcilo POPOVICH, Alastair John GRANT, Steven J. ROBBINS