Patents Assigned to DigiLens, Inc.
  • Publication number: 20240231208
    Abstract: Disclosed herein is a mixed illumination system including: a first light source; a second light source of different type than the first light source, where the wavelength an output of the second light source does not overlap with the wavelength of an output of the first light source; and a combiner which is configured to combine the output of the first light source and the second light source. The light from the first light source and the second light source are combined within the combiner into a combined beam.
    Type: Application
    Filed: October 20, 2023
    Publication date: July 11, 2024
    Applicant: DigiLens Inc.
    Inventors: Nima Shams, John Border, Nicholas Sherwood
  • Publication number: 20240217142
    Abstract: Systems and methods for compensating for nonuniform surface topography features in accordance with various embodiments of the invention are illustrated. One embodiment includes a method for manufacturing waveguide cells, the method including providing a waveguide including first and second substrates and a layer of optical recording material, and applying a surface forming process to at least one external surface of the first and second substrates. In another embodiment, applying the surface forming process includes applying a forming material coating to the at least one external surface, providing a forming element having a forming surface, bringing the forming element in physical contact with the forming material coating, curing the forming material coating while it is in contact with the forming element, and releasing the forming material coating from the forming element.
    Type: Application
    Filed: August 28, 2023
    Publication date: July 4, 2024
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Shibu Abraham, Milan Momcilo Popovich
  • Publication number: 20240219738
    Abstract: Disclosed herein is a head worn augmented reality display including a waveguide assembly including a first waveguide and a second waveguide; a first projector configured to output image containing light towards a first waveguide, where the image containing light is inputted into total internal reflection in the first waveguide and then outputted towards a user's first eye; a second projector configured to output image containing light towards a second waveguide, where the image containing light is inputted into total internal reflection in the second waveguide and then outputted towards a user's second eye. The first waveguide and the second waveguide are substantially transparent to light from the outside environment such that both the image containing light and light from the outside environment enters the user's eyes.
    Type: Application
    Filed: September 2, 2022
    Publication date: July 4, 2024
    Applicant: DigiLens Inc.
    Inventors: Nima Shams, George Hines, Stanislav Dmitryiyev, Nicholas Sherwood, Alastair John Grant, Hyesog Lee, Roger Allen Conley Smith, John Border, Joe Bietry, Milan Momcilo Popovich, Suhas Maheshaiah
  • Publication number: 20240219727
    Abstract: A waveguide display is provided comprising: an input image generator providing image light projected over a field of view; a waveguide having first and second external surfaces; and at least one grating optically coupled to the waveguide for extracting light towards a viewer. The waveguide has a lateral refractive index variation between said external surfaces that prevents any ray propagated within the waveguide from optically interacting with at least one of the external surfaces.
    Type: Application
    Filed: August 10, 2023
    Publication date: July 4, 2024
    Applicant: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
  • Publication number: 20240201584
    Abstract: Waveguide based displays benefit from gratings which are capable of diffracting both S and P polarized light with high efficiency. While typical surface relief gratings (SRGs) diffract P polarized light efficiently, SRGs do not typically diffract S polarized light efficiently. One class of gratings that diffracts S polarized light with high efficiency is deep SRGs. One approach to producing deep SRGs is holographic polymer dispersed liquid crystal (HPDLC) gratings. In producing HPDLC gratings, a reactive monomer mixture is exposed to light in a polymerization process. Reactive monomer mixtures may include co-initiators and photo-initiator dyes. Co-initiators which include liquid amine synergist have been demonstrated to have advantageous results. Further, photo-initiator dyes with high extinction coefficients have demonstrated advantageous results.
    Type: Application
    Filed: March 30, 2022
    Publication date: June 20, 2024
    Applicant: DigiLens Inc.
    Inventors: Shibu Abraham, Milan Momcilo Popovich, Alastair John Grant, Ratson Morad, Hua Gu, Gerald Buxton
  • Patent number: 12013561
    Abstract: A waveguide apparatus comprises in combination: a light pipe with an optical axis for guiding light therethrough; a light coupling element in optical contact with an elongate portion of the reflecting surface of the light guide; and an optical waveguide in optical contact with the coupling element.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: June 18, 2024
    Assignee: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
  • Publication number: 20240192490
    Abstract: Augmented reality eyewear allows users to see both light containing image data and light from the world together to superimpose the image data onto the real world. Augmented reality eyewear may connect to a smart device. Augmented reality eyewear may include various functionality which may be duplicated on the smart device. It would be advantageous to share the functionality on both the augmented reality eyewear and the smart device. The present disclosure relates to smart device mounted augmented reality displays which may share the functionality of the smart device for the augmented reality displays.
    Type: Application
    Filed: March 21, 2022
    Publication date: June 13, 2024
    Applicant: DigiLens Inc.
    Inventors: Nima Shams, Ratson Morad
  • Patent number: 11994674
    Abstract: An eye tracker comprises a light source; a detector; and first and second waveguides. The first waveguide comprises an input coupler for coupling source light into a waveguide path and a first grating for coupling light out of the waveguide path onto an eye. The second waveguide comprises a second grating for coupling light reflected from the eye into a waveguide path and an output coupler for coupling light out of the waveguide path onto the detector. The second grating is optically configured for imaging the eye onto the detector.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: May 28, 2024
    Assignee: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
  • Publication number: 20240160150
    Abstract: Systems and methods for recording holographic gratings in accordance with various embodiments of the invention are illustrated. One embodiment includes a holographic recording system including a first movable platform configured to support a first plurality of waveguide cells for exposure, at least one master grating, and at least one laser source configured to provide a set of recording beams by directing light towards the at least one master grating, wherein the first movable platform is translatable in predefined steps along at least one of two orthogonal directions, and wherein at each the predefined step at least one waveguide cell is positioned to be illuminated by at least one recording beam within the set of recording beams.
    Type: Application
    Filed: May 31, 2023
    Publication date: May 16, 2024
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Momcilo, Ratson Morad
  • Publication number: 20240160149
    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 17, 2023
    Publication date: May 16, 2024
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich
  • Publication number: 20240152094
    Abstract: Holographic volume gratings in waveguide cells can be recorded using many different methods and systems in accordance with various embodiments of the invention. One embodiment includes a holographic recording system including at least one laser source configured to emit recording beams and a movable platform configured to move between a first position and a second position, wherein when the movable platform is in the first position, the at least one laser source is configured to emit a first set of one or more recording beams toward a first set of one or more stations and when the movable platform is in the second position, the at least one laser source is configured to emit a second set of one or more recording beams toward a second set of one or more stations.
    Type: Application
    Filed: July 17, 2023
    Publication date: May 9, 2024
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich, Ratson Morad, Sean Michael Williams
  • Publication number: 20240151890
    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 6, 2023
    Publication date: May 9, 2024
    Applicants: DigiLens Inc., Rockwell Collins, Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant, Wyatt L. Hendrick, James H. Stanley
  • Publication number: 20240142695
    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: January 8, 2024
    Publication date: May 2, 2024
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich, Shibu Abraham, Baeddan George Hill, Tsung-Jui Ho
  • Publication number: 20240134260
    Abstract: Disclosed herein is a mixed illumination system including: a first light source; a second light source of different type than the first light source, where the wavelength an output of the second light source does not overlap with the wavelength of an output of the first light source; and a combiner which is configured to combine the output of the first light source and the second light source. The light from the first light source and the second light source are combined within the combiner into a combined beam.
    Type: Application
    Filed: October 19, 2023
    Publication date: April 25, 2024
    Applicant: DigiLens Inc.
    Inventors: Nima Shams, John Border, Nicholas Sherwood
  • Publication number: 20240103440
    Abstract: A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each containing a first hologram is stacked on a second holographic recording medium substrate. The first hologram is designed to diffract light from a first direction into a second direction. When expose to illumination from the first direction zero order and diffracted light from each first hologram interfere in the second holographic recording medium substrate forming a second hologram. The second hologram is then copied into a third holographic recording medium substrate to provide the final copy hologram.
    Type: Application
    Filed: September 15, 2023
    Publication date: March 28, 2024
    Applicant: DigiLens Inc.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
  • Patent number: 11899238
    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: September 12, 2022
    Date of Patent: February 13, 2024
    Assignee: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich, Shibu Abraham, Baeddan George Hill, Tsung-Jui Ho
  • Publication number: 20240027689
    Abstract: Multiplexed reflection and transmission gratings, and methods of their manufacture, are provided that improve uniformity with laser light, that is, reduced banding and other illumination artifacts occurring in waveguides. The mechanism for this can be the multiple reflections between the waveguide reflecting surfaces and the reflection hologram, which promote illumination averaging as beam propagation processes within a waveguide. In some gratings, a beam splitter layer overlapping the multiplexed gratings can be provided for the purposes of reducing banding in a laser-illuminated waveguide. The beam splitter can be provided by one or more dielectric layers. The beamsplitter can have sensitivity to one polarization. The beamsplitter can be sensitive to S-polarization. The beam splitter can be an anti-reflection coating optimized for normal incidence that becomes reflective at high TIR angles when immersed in glass or plastic.
    Type: Application
    Filed: July 31, 2023
    Publication date: January 25, 2024
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Hyesog Lee, Gerald Buxton, Milan Momcilo Popovich
  • Publication number: 20240027670
    Abstract: Disclosed herein are various implementations display devices including phonic crystals. One embodiment includes a heads-up display including: a picture generation unit for projecting collimated light over a field of view; a first waveguide comprising an input grating for coupling the light from the picture generation unit into a total internal reflection path in the first waveguide and an output grating for providing beam expansion and light extraction from the first waveguide; a curved transparent substrate; and a mirror disposed with its reflecting surface facing a waveguide output surface of the first waveguide. The mirror may be configured to reflect light extracted from the first waveguide back through the first waveguide towards the curved transparent substrate. The first waveguide may be configured such that the curved transparent substrate reflects light extracted from the first waveguide towards an eyebox forming a virtual image viewable through the transparent curved substrate from the eyebox.
    Type: Application
    Filed: November 22, 2021
    Publication date: January 25, 2024
    Applicant: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich, Shibu Abraham
  • Publication number: 20240019640
    Abstract: An optical waveguide comprises at least two TIR surface and contains a grating. Input TIR light with a first angular range along a first propagation direction undergoes at least two diffractions at the grating. Each diffraction directs light into a unique TIR angular range along a second propagation direction.
    Type: Application
    Filed: May 15, 2023
    Publication date: January 18, 2024
    Applicants: DigiLens Inc., Rockwell Collins, Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich, James H. Stanley, Robert D. Brown
  • Publication number: 20240019700
    Abstract: A wearable waveguide display having multiple input projection arrays configured to project an image into a waveguide via separate input couplers and project the image via an output element. The wearable display can be configured in a number of configurations that minimize weight and maximize comfort and resolution of the projected images. In some embodiments, the wearable waveguide display includes a first microLED array which outputs light into a first input coupler and a second microLED array which outputs light into a second input coupler. The first input coupler and the second input coupler both in couple light into total internal reflection in a waveguide. The incoupled light is outcoupled via an output optical element.
    Type: Application
    Filed: November 8, 2021
    Publication date: January 18, 2024
    Applicant: DigiLens Inc.
    Inventors: Nima Shams, Alastair John Grant, Milan Momcilo Popovich