Patents Examined by Balram T Parbadia
  • Patent number: 10545350
    Abstract: There is provided a lens element which can maintain an accuracy of the axis alignment between the lens elements and effectively suppress occurrence of ghosting and flares, and an imaging lens unit including such lens element. The fourth lens element 40 of the imaging lens unit 1 integrally comprises a lens portion 41 and an edge portion 42 surrounding the lens portion. The edge portion 42 is provided with an annular step portion 43 as an abut portion for axis alignment with a third lens element 30, and a light shielding portion 46 formed of vapor-deposited films are provided at the annular step portion 43.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: January 28, 2020
    Assignee: KANTATSU CO., LTD.
    Inventors: Yoshikazu Terai, Shigeru Endo, Takanori Sato
  • Patent number: 10539781
    Abstract: An apparatus for a beam steering device includes a rotator constituting a cylindrical body extending along an axis and defining a central passage therethrough. A wedge-shaped prism is secured to the body within the central passage. The prism has a first surface extending perpendicular to the axis and a second surface extending transverse to the axis. A drive member is provided on one of an axial end surface and a radially outer surface of the body for rotating the rotator. An encoder member is provided on the same surface of the body as the drive member for tracking the position of the rotator.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 21, 2020
    Inventors: Daniel N. Carothers, Stephen J. Fedigan
  • Patent number: 10537269
    Abstract: Apparatuses and methods for improving the accuracy of an analyte sensor are disclosed. The sensor may include a photodetector and a low angle sensitive (LAS) optical filter. The photodetector may be configured to convert received light into current indicative of the intensity of the received light. The LAS optical filter may be configured to prevent light having a wavelength outside a band pass region from reaching the photodetector and to pass light having a wavelength within the band pass region to the photodetector. The percentage of light passing through the LAS optical filter may decrease as the angle of incidence of the light increases.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: January 21, 2020
    Assignee: Senseonics, Incorporated
    Inventors: Joshua C. Schaefer, Andrew DeHennis, Szymon Tankiewicz
  • Patent number: 10534121
    Abstract: The present invention provides a means for suppressing an occurrence of a ghost by enhancing diffraction efficiency of a holographic optical element having a volume hologram recording layer. The present invention is a holographic optical element including: a volume hologram recording layer containing a photopolymer; and at least one adjacent layer which is in contact with the volume hologram recording layer and contains a resin, wherein a diffraction grating is formed so as to extend from the volume hologram recording layer to the adjacent layer.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: January 14, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventors: Saburou Hiraoka, Kenichi Onaka, Daisuke Watanabe, Yuya Kubo, Kishio Tamura
  • Patent number: 10527768
    Abstract: An inorganic polarizing plate, including in the order of reciting: a substrate that is transparent to light in a range used; a plurality of linear metal layers; a plurality of linear dielectric layers; and a plurality of linear light absorbing layers having a light absorbing effect. The plurality of linear metal layers are arranged on the substrate in a state of being apart from each other at intervals shorter than a wavelength of the light, and the plurality of linear dielectric layers are arranged on the plurality of linear metal layers respectively. The plurality of linear light absorbing layers are arranged on the plurality of linear dielectric layers respectively, and the linear metal layers have hollow portions.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: January 7, 2020
    Assignee: Dexerials Corporation
    Inventor: Eiji Takahashi
  • Patent number: 10527904
    Abstract: In accordance with some embodiments of the disclosed subject matter, a display device, a display apparatus, a liquid metal material, and related fabricating molds, methods, and apparatus are provided. In some embodiments, the disclosed subject matter provides a display device, comprising: a first substrate; a second substrate; and a liquid metal materiel layer sandwiched by the first substrate and the second substrate; wherein the liquid metal materiel layer comprises: a base fluid, and a plurality of liquid metal particles dispersed in the base fluid.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: January 7, 2020
    Inventors: Jiuxia Yang, Hongbo Feng
  • Patent number: 10520717
    Abstract: A prism module includes a first prism including a first surface, a second surface and a third surface, a roof prism including a roof surface and a fourth surface, a second prism including a fifth surface, a sixth surface and a seventh surface, and a third prism including a light access surface, a first reflecting surface and a second reflecting surface. A light source is disposed above the second prism and adjacent to the first and the roof prisms. A light beam emitted by the light source enters and is reflected by the third prism, enters the second prism through the seventh surface, passes through the sixth surface, enters the first prism through the third surface, and is reflected by the second surface to leave the prism module. The light beam leaving the prism module is parallel to a baseline passing through the first, the second and the fourth surfaces.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: December 31, 2019
    Inventors: Yue-Ye Chen, Hua-Tang Liu, Zhi-Wei Gao, Sheng Luo, Jian-Mei Chen, Ming Zhou
  • Patent number: 10520703
    Abstract: Provided are an optical lens assembly and an electronic device. The optical lens assembly includes a first lens having a positive refractive power, a second lens having a positive or negative refractive power, and a third lens having a negative refractive power. The first lens, the second lens, and the third lens are sequentially arranged from an object side to an image side of an optical axis, the object side facing an object for image capture and the image side facing an image plane of an image sensor. The optical lens assembly and the electronic device may be configured to perform, for example, iris recognition for user authentication.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: December 31, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jeong-yeol Lee
  • Patent number: 10509153
    Abstract: An optical device including a first layer of a total internal reflection (TIR) waveguide and a second layer of the TIR waveguide is disclosed. The second layer of the TIR waveguide may be coupled to the first layer. The second layer may include an output coupling device configured to reflect light toward an exit face of the TIR waveguide. The output coupling device may include one or more diffractive gratings. The optical device may also include an input coupling face disposed on a non-diffractive edge portion the first layer or the second layer or both the first and second layer. The input coupling face may be configured to receive image light. Another optical device may include an input coupling face disposed on a non-diffractive input coupling element. The non-diffractive input coupling element may be positioned in an optical path for directing the image light to the TIR waveguide.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: December 17, 2019
    Assignee: Akonia Holographics LLC
    Inventors: Adam Urness, Kenneth E. Anderson, Friso Schlottau, Mark R. Ayres
  • Patent number: 10509299
    Abstract: A device for shielding an outdoor camera from light interference. The light shielding device includes a visor having a brim perpendicularly and pivotally connected to a panel, wherein the panel can rest flush against a support and the brim extends over a camera in order to shield the camera lens from direct sunlight and inclement weather. A first strap extends from a first side of the panel and a second strap extending from a second side of the panel, wherein a distal end of each of the first and second strap removably secure to one another to form a loop. A male and female fastener are disposed at the distal ends of each strap and removably secure the device to the support. In some embodiments, a plurality of teeth extend from an interior side of the panel and can penetrate the support for further securing the device thereto.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: December 17, 2019
    Inventor: Travis Cook
  • Patent number: 10503043
    Abstract: Provided are a beam steering device and a system including the same. The beam steering device includes a conversion layer having a refractive index which is variable via electrical control and a plurality of nanoantenna pattern layers stacked on the conversion layer. The refractive index of the conversion layer is electrically changed by a driver.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: December 10, 2019
    Inventors: Sunil Kim, Changgyun Shin, Jungwoo Kim, Duhyun Lee
  • Patent number: 10502951
    Abstract: An apparatus includes a wavefront sensor configured to receive coherent flood illumination that is reflected from a remote object and to estimate wavefront errors associated with the coherent flood illumination. The apparatus also includes a beam director optically coupled to the wavefront sensor and having a telescope and an auto-alignment system. The auto-alignment system is configured to adjust at least one first optical device in order to alter a line-of-sight of the wavefront sensor. The wavefront errors estimated by the wavefront sensor include a wavefront error resulting from the adjustment of the at least one first optical device. The beam director could further include at least one second optical device configured to correct for the wavefront errors. The at least one second optical device could include at least one deformable mirror.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: December 10, 2019
    Assignee: Raytheon Company
    Inventors: David N. Sitter, Jr., Joseph Marron, Maurice J. Halmos, Joseph J. Ichkhan, Justin S. Grayer, Gamze Erten
  • Patent number: 10473819
    Abstract: A two-dimensional (2D) square-lattice photonic crystal (PhC) based on a circular hollow dielectric cylinder and flat dielectric cylinders include a high-refractive-index dielectric cylinder and a low-refractive-index dielectric background, the PhC structure is formed by arranging unit cells in a square-lattice; one lattice constant of the square-lattice PhC is a; each unit cell includes a circular hollow dielectric cylinder and flat dielectric cylinders; and the circular hollow dielectric cylinder is connected to four flat dielectric cylinders; a width D of the flat dielectric cylinder is 0.01a to 0.2a, an outer diameter R of the circular hollow dielectric cylinder is 0.1a to 0.5a, and a ratio T of a difference between an inner diameter and an outer diameter of the circular hollow dielectric cylinder to the outer diameter of the circular hollow dielectric cylinder is 0.01 to 0.99.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: November 12, 2019
    Inventor: Zhengbiao Ouyang
  • Patent number: 10473997
    Abstract: An electrochromic device is provided. The device includes a first substrate and a second substrate. The device includes electrochromic material, with the first substrate, the electrochromic material and the second substrate forming a laminate, the first substrate offset in a lateral direction from the second substrate along at least a portion of an edge of the electrochromic device. The device includes a plurality of terminals coupled to the electrochromic material, with at least two of the plurality of terminals exposed on the first substrate by the first substrate being offset in the lateral direction from the second substrate. A method of manufacturing an electrochromic device is also provided.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: November 12, 2019
    Assignee: Kinestral Technologies, Inc.
    Inventors: Ken Higashihara, John Gallipeo
  • Patent number: 10473948
    Abstract: An optical hybrid lens comprises a substrate having a first surface and a second surface opposite the first surface. A sub-wavelength grating lens is disposed on the first surface and comprises a plurality of posts. The plurality of posts is arranged on the first surface and the posts extend from the first surface. A refractive lens is arranged on the sub-wavelength grating lens at least partly enclosing the plurality of posts. Alternatively, the refractive lens is arranged on the second surface.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: November 12, 2019
    Assignee: ams AG
    Inventor: Lukas Elsinger
  • Patent number: 10466394
    Abstract: Metasurfaces provide compact optical elements in head-mounted display systems to, e.g., incouple light into or outcouple light out of a waveguide. The metasurfaces may be formed by a plurality of repeating unit cells, each unit cell comprising two sets or more of nanobeams elongated in crossing directions: one or more first nanobeams elongated in a first direction and a plurality of second nanobeams elongated in a second direction. As seen in a top-down view, the first direction may be along a y-axis, and the second direction may be along an x-axis. The unit cells may have a periodicity in the range of 10 nm to 1 ?m, including 10 nm to 500 nm or 300 nm to 500 nm. Advantageously, the metasurfaces provide diffraction of light with high diffraction angles and high diffraction efficiencies over a broad range of incident angles and for incident light with circular polarization.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: November 5, 2019
    Assignee: Magic Leap, Inc.
    Inventors: Dianmin Lin, Michael Anthony Klug, Pierre St. Hilaire, Mauro Melli, Christophe Peroz, Evgeni Poliakov
  • Patent number: 10466564
    Abstract: Electrical connection between the backplane and the front electrode of an electro-optic display is provided by forming a front plane laminate (100) comprising, in order, a light-transmissive electrically-conductive layer (104), a layer of electro-optic material (106), and a layer of lamination adhesive (108); forming an aperture (114) through all three layers of the front plane laminate (100); and introducing a flowable, electrically-conductive material (118) into the aperture (114), the flowable, electrically-conductive material being in electrical contact with the light-transmissive electrically-conductive layer (104) and extending through the adhesive layer (108).
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: November 5, 2019
    Assignee: E Ink Corporation
    Inventors: Matthew Joseph Kayal, Steven Joseph Battista, Richard J. Paolini, Shyamala A. Subramanian
  • Patent number: 10459331
    Abstract: The present invention provides a mask structure and a COA type array substrate. The mask structure comprises a central light shielding portion (1), a peripheral light shielding portion (3) surrounding the central light shielding portion (1) and conforming to an outer contour shape of the central light shielding portion (1) and a circumambient hollow slit (5) sandwiched between the peripheral light shielding portion (3) and the central light shielding portion (1). The exposure light will diffract through the hollow slit (5) to result in the propagation of the reverse bending and the energy intensity gradient. In conjunction with the negative photoresist, the taper of the finally manufactured color filter layer through hole can be made to be gentle to improve the electrical connection quality between the pixel electrodes and the metal material signal lines for avoiding the display failure.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: October 29, 2019
    Inventor: Tao Sun
  • Patent number: 10459288
    Abstract: Provided is a backlight unit having high optical efficiency and a holographic display device including the backlight unit. The backlight unit includes a light source unit configured to provide a light beam, a first beam expander configured to mix the light beam provided from the light source unit, expand the light beam in a first direction, and output the mixed and expanded light beam as white light, and a second beam expander configured to expand the white light output from the first beam expander in a second direction perpendicular to the first direction and output the expanded white light as surface light.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: October 29, 2019
    Inventors: Chilsung Choi, Sunil Kim, Geeyoung Sung, Hoon Song, Jungkwuen An, Hongseok Lee
  • Patent number: 10451888
    Abstract: A reticle for an optical sighting device, such as a riflescope, that has subtension markings of varying thicknesses and scales to accommodate both stationary and moving targeting. In certain embodiments, the reticle has a plurality of fine subtension markings and coarse subtension markings positioned along the horizontal stadia line, with the coarse subtension markings having a thickness greater than the thickness of the fine subtension markings.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: October 22, 2019
    Inventor: David M. Hamilton