Patents Examined by Kimberly N. Kakalec
  • Patent number: 11567324
    Abstract: An exit pupil expander (EPE) has entrance and exit pupils, a back surface adjacent to the entrance pupil, and an opposed front surface. In one embodiment the EPE is geometrically configured such that light defining a center wavelength that enters at the entrance pupil perpendicular to the back surface experiences angularly varying total internal reflection between the front and back surfaces such that the light exiting the optical channel perpendicular to the exit pupil is at a wavelength shifted from the center wavelength. In another embodiment a first distance at the entrance pupil between the front and back surfaces is different from a second distance at the exit pupil between the front and back surfaces. The EPE may be deployed in a head-wearable imaging device (e.g., virtual or augmented reality) where the entrance pupil in-couples light from a micro display and the exit pupil out-couples light from the EPE.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: January 31, 2023
    Assignee: Magic Leap, Inc.
    Inventor: Jyrki Sakari Kimmel
  • Patent number: 11567312
    Abstract: A micromirror comprising a mirror pivotally attached to a mount by a first pivoting structure that permits pivotal movement of the mirror relative to the mount about a first axis. A first comb drive with a first portion fixed relative to the mirror and a second portion fixed relative to the mount, and the first comb drive are adapted to actuate the mirror about the first axis. A first support structure pivotally attached to the mount by a second pivoting structure that permits pivotal movement of the mount relative to the first support structure about a second axis, and the second axis is non-parallel to the first axis. A second comb drive with a first portion fixed relative to the mount and a second portion fixed relative to the first support structure, and the second comb drive is adapted to actuate the mount about the second axis.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: January 31, 2023
    Assignee: PRECISELEY MICROTECHNOLOGY CORP.
    Inventor: Tiansheng Zhou
  • Patent number: 11555999
    Abstract: Electrical connections are created between the actuator frame of a piezoelectric MEMS scanning mirror system and the substrate separate from the structural adhesive creating the mechanical bond between the actuator frame and the substrate. A structural bond (with no conducive properties) is formed between the actuator frame and the substrate. After the bond is fully formed, separate electric connections can be created by one or both of: 1) coating the actuator frame with a coating that enables a surface of the actuator frame to be wire bondable and creating a wire bond between the actuator frame and the substrate; or 2) depositing a trace of conductive material on the outside edge of the mechanical bond between the actuator frame and the substrate and a final protection layer may be applied over the conductive trace to protect the trace from mechanical or environmental damage.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: January 17, 2023
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventor: Michael James Nystrom
  • Patent number: 11550144
    Abstract: A mirror drive portion which causes a mirror portion to swing around a predetermined swing axis; a single optical sensor including a single light emission portion and a single light reception portion which receives light emitted from the light emission portion; a light blocking portion which is arranged in the mirror portion to swing together with the swing of the mirror portion and periodically blocks the light emitted from the light emission portion along with the swing; and a mirror control portion which controls the swing of the mirror portion based on an alternating voltage and a detection signal of the optical sensor, wherein the mirror control portion acquires a state of the swing of the mirror portion based on a light reception state of the light reception portion and a zero-cross timing of the alternating voltage, and controls the swing of the mirror portion.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: January 10, 2023
    Assignee: FUNAI ELECTRIC CO., LTD.
    Inventors: Futoshi Takeda, Mika Hamaoka
  • Patent number: 11543571
    Abstract: A transmission filter apparatus is provided that includes: (i) a substrate to serve as a foundation for the apparatus; (ii) a layer containing resonant dielectric cavities separated by conductive regions. The dimensions and design of the dielectric cavities, thickness of the layer, and substrate, dielectric and conductive materials are chosen to achieve resonant transmission of selected wavelengths. In a particular one or more embodiments, the layer is one dimensional, i.e. you have dielectric cavities along one axis in the plane that are comparatively infinity long in the parallel plane. In a particular one or more embodiments, the layer is two dimensional, i.e. you have dielectric cavities along both axis in the plane. The dimensions in each plane may or may not be equal. In a specific one or more embodiments, the dielectric cavities are terminated on the top and/or bottom by thin metal films with small apertures or tapers.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: January 3, 2023
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Justin W. Cleary, Evan M. Smith, Ricky D. Gibson, Jr., Shivashankar R. Vangala, Joshua Hendrickson, Ivan Avrutsky
  • Patent number: 11536960
    Abstract: A head up display (HUD) system includes: one or more light sources and one or more phase modulators configured to generate and output a hologram; and a replicator configured to receive the hologram, to generate N replications of the hologram from the hologram, and to output the N replications of the hologram, where N is an integer greater than or equal to 2.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: December 27, 2022
    Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Kai-Han Chang, Thomas A. Seder, Jamieson Leigh Christmas
  • Patent number: 11531142
    Abstract: An optical member that has excellent antireflection properties and that can maintain antifogging properties over a long term, and a method for manufacturing an optical member are provided. The optical member includes, in sequence, a substrate, a porous layer, and a multilayered antireflection layer. The ratio n/n0 is 0.85 or more and 0.95 or less, where n represents a refractive index of a layer having the highest refractive index among layers included in the antireflection layer and n0 represents a refractive index of a compound constituting the layer having the highest refractive index at a theoretical density.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: December 20, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Makino, Toshinao Tatsuno
  • Patent number: 11526129
    Abstract: An interference structure having a nanovoided hologram material is described. The nanovoided hologram material may have an index of refraction difference of approximately 0.4. The interference structure may include about 10% to 90% nanovoids by volume. The interference structure may be formed using a mixture of a monomer, an initiator, and solvent. The mixture may be disposed on a substrate and irradiated with two sources of light spaced apart from each other and shining on the same region of the mixture to generate an interference pattern in the mixture, leading to the selective polymerization of regions of the mixture where there is constructive interference of light. Various other devices, methods, and systems are also disclosed.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: December 13, 2022
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Andrew John Ouderkirk, Qi Zhang
  • Patent number: 11511989
    Abstract: Described examples include a micromechanical device having a substrate. The micromechanical device includes a MEMS element and a via between the MEMS element and the substrate, the via having a conductive layer extending from the substrate to the MEMS element and having a structural integrity layer on the conductive layer.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: November 29, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Earl Vedere Atnip, John Wesley Hamlin, Win Jae Jessie Yuan
  • Patent number: 11513354
    Abstract: A light guide for guiding light for an HMD includes at least one input coupling structure and at least one output coupling structure. The output coupling structure can be oriented such that for all the rays that are coupled out by the output coupling structure and for which the wave vector k has a negative ratio ky/kxz after they have been coupled out, the wave vector k in the light guide has a ratio of ky/kxz of greater than ?0.2, and/or that for all the rays that are coupled out by the output coupling structure and for which the wave vector k has a positive ratio ky/kxz after they have been coupled out, the wave vector k in the light guide has a ratio of ky/kxz of less than +0.2.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: November 29, 2022
    Assignee: Carl Zeiss Jena GmbH
    Inventors: Wolfgang Singer, Matthias Hillenbrand, Hans-Juergen Dobschal
  • Patent number: 11493748
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the one place of the substrate and the base are disposed with a gap therebetween.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: November 8, 2022
    Inventors: Daisuke Saito, Satoshi Fujisawa, Yasushi Matsuno, Nozomu Hirokubo
  • Patent number: 11487180
    Abstract: A metasurface optical device composed of three stacked dielectric layers which form an anti-reflective structure for wavelengths in a predetermined operational wavelength range within the visible spectrum. The anti-reflective structure contains a rectangular lattice of rhombohedral perturbations that produce guided-mode resonances within the predetermined operational wavelength range. The guided-mode-resonant dielectric metasurface device is capable of detecting by colorimetric readout the presence and orientation of a linearly birefringent anisotropic medium, such as a fibrous tissue, positioned above the stacked dielectric layers.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: November 1, 2022
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Jennifer A. Dionne, Lisa V. Poulikakos, Mark Lawrence, David Russell Barton, III
  • Patent number: 11487244
    Abstract: The present disclosure relates to systems and methods for translating optical beams.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: November 1, 2022
    Assignee: Arizona Board of Regents on Behalf of the University of Arizona
    Inventor: Pierre Alexandre Blanche
  • Patent number: 11487053
    Abstract: An optical element includes a substrate, an intermediate layer, a topmost layer, and a contiguous multitude of recessed and non-recessed areal regions. The intermediate layer is formed over a top surface of the substrate and has a refractive index nI. The topmost layer is formed directly on the intermediate layer and has a refractive index nT where nT?nI. The intermediate and topmost layers are substantially transparent over an operational wavelength range that includes a design wavelength ?0. A subset of areal regions has a largest transverse dimension less than about ?0. Each non-recessed areal region includes corresponding portions of the intermediate and topmost layers. Each recessed areal region extends entirely through the topmost layer and at least partly through the intermediate layer. A fill medium fills the recessed areal regions. The areal regions are variously sized and distributed transversely across the optical element.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: November 1, 2022
    Assignee: II-VI DELAWARE, INC.
    Inventors: Christoph M. Greiner, Jianji Yang, Dmitri Iazikov
  • Patent number: 11480783
    Abstract: An optical filter system includes a Fabry-Perot interference filter, and a controller that controls the Fabry-Perot interference filter. The Fabry-Perot interference filter includes a first mirror portion, a second mirror portion, a first driving electrode and a first monitor electrode provided with the first mirror portion, and a second driving electrode and a second monitor electrode provided with the second mirror portion. The controller includes a control unit that calculates an electrostatic capacitance between the first mirror portion and the second mirror portion based on an alternating voltage generated between the first monitor electrode and the second monitor electrode while an alternating current is applied between the first monitor electrode and the second monitor electrode.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: October 25, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Helmut Teichmann, Andreas Durandi, Peter Seitz, Takashi Kasahara, Katsumi Shibayama
  • Patent number: 11474281
    Abstract: A method for producing an optical element having a main body with a first side surface, which has a first optical coating, and at least one second side surface, which is not plane-parallel to the first side surface and has a second optical coating, is proposed. The method includes the steps of: determining the stress induced in the optical element by the first optical coating of the first side surface; determining a counter-stress, so that the resultant overall stress induced in the optical element is as small as possible; determining the second optical coating while taking into account the determined counter-stress and the optical parameters of the second optical coating; applying the first optical coating on the first side surface; and, applying the second optical coating on the at least one second side surface.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: October 18, 2022
    Assignee: Carl Zeiss Meditec AG
    Inventors: Christian Beder, Christoph Zaczek, Erwin Gaber, Diana Tonova, Michael Sundermann
  • Patent number: 11474343
    Abstract: Tunable MEMS etalon devices comprising: a front mirror and a back mirror, the front and back mirrors separated in an initial pre-stressed un-actuated etalon state by a gap having a pre-stressed un-actuated gap size determined by a back stopper structure in physical contact with the front mirror and back mirrors, the etalon configured to assume at least one actuated state in which the gap has an actuated gap size gap greater than the pre-stressed un-actuated gap size; an anchor structure, a frame structure fixedly coupled to the front mirror at a first surface thereof that faces incoming light, and a flexure structure attached to the anchor structure and to the frame structure but not attached to the front mirror, and a spacer structure separating the anchor structure from the back mirror, and wherein the front mirror and the spacer structure are formed in a same single glass layer.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: October 18, 2022
    Assignee: UNISPECTRAL LTD.
    Inventors: Ariel Raz, Viacheslav Krylov, Eliahu Chaim Ashkenazi, Peleg Levin
  • Patent number: 11454930
    Abstract: A holographic image display device according to one embodiment comprises: an image display unit on which a holographic image is displayed; and a spatial impression providing unit which forms a space surrounding the holographic image, and includes a transparent color material such that the space looks colored and the holographic image can be recognized from the outside.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: September 27, 2022
    Assignee: SK TELECOM CO., LTD.
    Inventors: Yong Woo Bae, Dongyoub Sinn, Hak-Soon Lee, Jinsoo Jeon, Gukchan Lim
  • Patent number: 11428932
    Abstract: There is provided a lens array and an lens array capable of suitably preventing irregular brightness without reducing resolution. A micro lens array of a screen includes upper-level microlenses and lower-level microlenses which are formed on the incidence surface of the screen, which have the same effective diameter, and which have a structure that generates an optical path length difference ? in transmission light. By disposing the upper-level microlenses and the lower-level microlenses at an interval based on the effective diameter, the basic periodic structure of a lens period is formed. Further, the upper-level microlenses and the lower-level microlenses form a basic block comprising a combination of the lenses having a structure that generates the optical path length difference. A concave-and-convex period PC based on the basic block is an integer multiple of the lens period.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: August 30, 2022
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Katsuhiro Koike, Takayuki Nomoto
  • Patent number: 11422238
    Abstract: Described herein is a system for directing light over two dimensions. The system includes a dispersive element arranged to direct light over an initial dimension based on wavelength. The system also includes an array of steering elements arranged along the initial dimension to receive the directed light, the array of steering elements configured to further direct the received light to whereby direction of the light over two dimensions is achieved. Also described is a method for directing light over two dimensions.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: August 23, 2022
    Assignee: Baraja Pty Ltd.
    Inventors: Federico Collarte Bondy, Cibby Pulikkaseril, Rebecca Lodin, Andrea Tabacchini