Patents Examined by Roy M. Punnoose
  • Patent number: 10228331
    Abstract: This system comprises an illumination optics subsystem for generating and directing an incident beam towards a defect on a surface of a wafer. The illumination optics subsystem includes a light source for generating the incident beam and one or more polarization components for adjusting a ratio and/or a phase difference for the incident beam's electric field components. The system includes a collection optics subsystem for collecting scattered light from the defect and/or surface in response to the incident beam, and the collection optics subsystem comprises an adjustable aperture at the pupil plane, a rotatable waveplate for adjusting a phase difference of electric field components of the collected scattered light, and a rotatable analyzer.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 12, 2019
    Assignee: KLA-Tencor Corporation
    Inventors: Sheng Liu, Guoheng Zhao
  • Patent number: 10215631
    Abstract: To provide a confocal displacement sensor that can prevent deterioration in measurement accuracy due to a spherical aberration of an optical member. The confocal displacement sensor includes a light source for light projection configured to generate light having a plurality of wavelengths, a pinhole configured to emit detection light by allowing the light emitted from the light source for light projection to pass, an optical member configured to generate an axial chromatic aberration in the detection light emitted via the pinhole and converge the detection light toward the measurement object, a measurement control section configured to calculate displacement of the measurement object on the basis of, in the detection light irradiated on the measurement object via the optical member, detection light passed through the pinhole by being reflected while focusing on the measurement object, and a head housing configured to house the pinhole and the optical member.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: February 26, 2019
    Assignee: Keyence Corporation
    Inventors: Hideto Takei, Tomikazu Sakaguchi
  • Patent number: 10209528
    Abstract: A combination of a focusing element, and a filtering element which naturally adjusts the cross-sectional area of a beam of electromagnetic radiation passed through the focusing element as a function of wavelength over a specified range of wavelengths, wherein the filtering element is not uniform, but rather varies as a selection from the group consisting of: optical density and/or thickness is greatest near the center thereof; and optical density and/or thickness is smallest near the center thereof; and can demonstrate neutral density characteristics outside the specified range of wavelengths. The combination of a focusing element, and a filtering element can optionally be present in an ellipsometer or polarimeter system.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: February 19, 2019
    Assignee: J.A. WOOLLAM CO., INC.
    Inventor: Martin M. Liphardt
  • Patent number: 10209176
    Abstract: A flow cell device including a spherical optical element is disclosed. The spherical lens can be sealed to the body of the flow cell device in a manner that provides external optical access to a fluid in an analysis region of a flow path through the flow cell device. The seal can be provided by an elastomer, a polymer, or a deformable metal. The disposition of the spherical lens to the flow path enables in situ optical analysis of the fluid. An optical analysis device can be removably connected to the flow cell device to provide the optical analysis. In some embodiments the optical analysis device is a portable Raman spectrometer. The flow cell device can provide a supplementary interrogation interface, and/or an on board sensor device(s) to enable multivariate analysis and/or advanced triggering.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: February 19, 2019
    Assignee: MarqMetrix, Inc.
    Inventors: Giora Proskurowski, Brian James Marquardt
  • Patent number: 10209059
    Abstract: A three-dimensional (3D) coordinate measurement system includes: a retroreflector; a laser tracker including: a first light source; a second light source; at least one camera proximate the second light source; and a processor responsive to executable instructions which when executed by the processor is operable to determine, in a first instance, that a follow-operator gesture has been given by an operator and in response turn the laser tracker to follow movement of the operator.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: February 19, 2019
    Inventors: Kalyan Nagalla, Robert C. Mehler, Robert E. Bridges
  • Patent number: 10203280
    Abstract: A micro object detection apparatus includes an optical system. The first optical system includes a first reflection region, a second reflection region, and a light reception element. The first reflection region has an ellipsoidal shape, and reflects scattered light scattered when irradiation light hits a particle to direct the scattered light to the light reception element, by utilizing two focal point positions of the ellipsoidal shape. The second reflection region reflects scattered light coming from the particle to direct the scattered light to the first reflection region, so that the scattered light is directed to the light reception element by utilizing the ellipsoidal shape of the first reflection region. The light flux diameter of the scattered light reflected by the second reflection region is larger than the particle, at the position of the particle at which the scattered light is generated.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: February 12, 2019
    Inventor: Kenya Nakai
  • Patent number: 10201303
    Abstract: Systems and method are disclosed for determining a concentration of an analyte in a fluid (e.g., blood). The system can draw blood from a patient and deliver the blood to a sample cell. A particular component of the fluid (e.g., plasma) may be separated and/or positioned such that the concentration of the analyte is measured in the particular component of the fluid (e.g., plasma). The sample cell can include a sample container that has two window pieces. The system can have a fluid passage having a tip configured to mate with a multi-lumen catheter without leaking. The multi-lumen catheter can have proximal and distal ports. A fluid pressure system can be configured to periodically draw fluid from vasculature through a proximal intravascular opening and the proximal port while maintaining a low pressure and/or flow rate to thereby reduce risk of reversing the fluid flow in a vessel and drawing infusates upstream into another intravascular opening.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: February 12, 2019
    Assignee: OptiScan Biomedical Corporation
    Inventors: Eugene Lim, Roger Tong, Peter Rule, James R. Braig, Richard Keenan, David N. Callicoat
  • Patent number: 10197485
    Abstract: Disclosed herein is a method of characterizing particles in a sample. The method comprises illuminating the sample in a sample cell with a light beam, so as to produce scattered light by the interaction of the light beam with the sample; obtaining a time series of measurements of the scattered light from a single detector; determining, from the time series of measurements from the single detector, which measurements were taken at times when a large particle was contributing to the scattered light; determining a particle size distribution, including correcting for light scattered by the large particle.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: February 5, 2019
    Inventors: Jason Corbett, Alex Malm
  • Patent number: 10197486
    Abstract: A system for evaluating drainage condition of a pavement surface is disclosed. The system may include: a spray assembly configured to spray a liquid over the pavement surface, an image capturing device configured to capture consecutive images of the pavement surface at predetermined intervals, and an image processing unit coupled with the image capturing device.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: February 5, 2019
    Assignees: Amirkabir University of Technology
    Inventors: Behrouz Mataei, Fereidoon Moghadas Nejad, Hamzeh Zakeri
  • Patent number: 10197392
    Abstract: An apparatus comprises an automated guided vehicle that moves on a surface of a composite structure during operation of the apparatus to inspect the composite structure, a surface inspection sensor system associated with the automated guided vehicle, and an automated guided vehicle and surface inspection sensor system controller in communication with the automated guided vehicle and the surface inspection sensor system.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: February 5, 2019
    Assignee: The Boeing Company
    Inventor: Gregory L. Clark
  • Patent number: 10198827
    Abstract: A method of inspecting a sample includes performing a focusing operation on a target pattern of a sample. The focusing operation includes scanning the target pattern at different focusing levels to obtain a plurality of focus images. The method further includes using at least one of the plurality of the focus images as a target pattern image of the target pattern and then measuring a dimension of the target pattern based on the target pattern image.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: February 5, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woongkyu Son, Sangkyo Lim, Sunhee Shim, MiJung Jeon
  • Patent number: 10190879
    Abstract: A system for detecting localized ground position changes makes use of plurality of lighting units, each fixed to the ground. Each lighting unit comprises a positioning system and a transmitter for transmitting positioning information to a remote central processing unit. The positioning information from the plurality of fixed lighting units is processed to identify local ground position changes. The infrastructure of a networked lighting system in this way enables ground information to be determined, for example for detecting ground movement in response to natural events or man-made activities (such as tunneling, building, extraction of natural resources etc.).
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: January 29, 2019
    Inventors: Oscar Garcia Morchon, Marc Aoun, Miguel Elcano-Fuentes
  • Patent number: 10188332
    Abstract: A system for sensing glucose concentration is provided and includes following components. A light source generates a light beam. The system may include a polarization state generator (PSG) for changing the polarization of the light beam, and then the light beam is emitted to a biological tissue. A polarization state analyzer (PSA) receives the light beam reflected from the biological tissue, and the received light beam is used to calculate Stokes vectors. A Mueller matrix is calculated according to the Stokes vectors. In some embodiments, the system includes an optical coherence tomography (OCT) in which the light beam is sensed by a detector for calculating the Mueller matrix. An optical rotation angle and a depolarization index are calculated in accordance with the differential Mueller matrix formalism. The glucose concentration is calculated in accordance with the optical rotation angle and the depolarization index.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: January 29, 2019
    Inventors: Yu-Lung Lo, Quoc-Hung Phan, Chia-Chi Liao
  • Patent number: 10190978
    Abstract: A sensor having a substrate is provided in which structures are disposed on a surface of the substrate. The structures can be, e.g., nanostructures. Polarized light is directed toward the sensor, and birefringence of the structures with respect to the light is measured. Target particles that interact with the structures are detected based on changes in the measured birefringence.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: January 29, 2019
    Assignee: NUtech Ventures
    Inventors: Mathias M. Schubert, Tino Hofmann, Daniel Schmidt, Patrick H. Dussault, Andrea Holmes, Rebecca Y. Lai
  • Patent number: 10186078
    Abstract: Provided are a system and method of recognizing an indoor location of a moving object. A recognition device includes an illumination unit including a plurality of illumination modules respectively having different predetermined light receiving characteristics, each of the illumination modules receiving polarized light emitted from at least one lighting device according to one of the predetermined light receiving characteristics and measuring an illumination value; and an analysis unit configured to calculate a light source polarization axis angle of the at least one lighting device using a predetermined linear polarization rule and the illumination value measured by each illumination module, the at least one lighting device emitting light received by the illumination unit.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: January 22, 2019
    Assignee: Polariant, Inc.
    Inventors: Hyouk Jang, Hyeon Gi Jeon, Youngjae Choi
  • Patent number: 10184878
    Abstract: Methods of evaluating particle attributes in a sample fluid subjected to flow cytometry investigation in a flow cytometer instrument, methods of processing time series signal data traces output by a flow cytometer instrument, and a flow cytometer system are provided. In the methods and systems, data points comprising time series signal data traces corresponding with detection during the flow cytometry investigation of light from the sample fluid in one or more wavelength ranges indicative of the presence of one or more particle attributes in the sample fluid are batch-processed using a batch-specific signal peak threshold determined as a function of a batch-specific noise characteristic to identify signal peaks in the batch of data points indicative of the presence of the one or more particle attributes in the sample fluid.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: January 22, 2019
    Assignee: IntelliCyt Corporation
    Inventors: Andrew W. Smolak, Jean-Luc Fraikin, Erica Dawson Tenent, Kathy L. Rowlen
  • Patent number: 10175224
    Abstract: Provided are a robust and high throughput method for identifying a target cell and a target cell identification device. The method for identifying a target cell includes an image acquisition step of irradiating a specimen with a plurality of light rays having different wavelengths and acquiring a plurality of phase difference images of the specimen, a selection step of selecting a plurality of target cell candidates from the specimen based on a difference in absorption coefficients with respect to the plurality of light rays having different wavelengths, a brightness ratio acquisition step of acquiring brightness ratios between a central part and a peripheral part of each target cell candidate based on the plurality of phase difference images, and a sorting step of sorting a target cell and a non-target cell from the plurality of target cell candidates based on the brightness ratios.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: January 8, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Kenta Matsubara
  • Patent number: 10175166
    Abstract: A method for operating an optical measuring system for measuring the concentration of a gas component in a measured gas, based on wavelength modulation spectroscopy, wherein a laser light source is operated in a current-modulated manner with a base current IDC and a modulation current IAC and a laser beam of the wavelength ?0 having a wavelength modulation amplitude ??AC is emitted, and the wavelength modulation amplitude ??AC of the laser light is kept constant by way of variable setting of the current modulation amplitude ?IAC. The method provides for keeping a modulated power ?PAC at an internal resistor RI of the laser light source constant at the operating point so as to stabilize the wavelength modulation amplitude ??AC.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: January 8, 2019
    Assignee: Axetris AG
    Inventors: Andreas Wittmann, Sven Schlesinger, Torsten Platz
  • Patent number: 10175161
    Abstract: Disclosed are optical computing devices that employ birefringent optical elements configured for use in optical computing devices. One optical computing device includes a polarizer configured to generate at least x polarized light and y polarized light, a birefringent integrated computational element configured to optically interact with a substance and the polarizer, thereby generating optically interacted light, and at least one detector arranged to receive the optically interacted light and generate an output signal corresponding to a characteristic of the substance.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: January 8, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Neal Gregory Skinner, David L. Perkins
  • Patent number: 10168138
    Abstract: A system for inspecting a slab of material may include a polarization maintaining single mode optical-fiber, a linearly polarized broadband light-source configured to emit a polarized-light over the optical fiber, a beam-assembly configured to receive the light over the optical fiber and direct the light toward a slab of material; a polarization-rotator for controlling polarization of the light directed to the slab of material from the beam-assembly; a computer-controlled etalon filter configured to receive the light over the optical fiber, filter the light, and direct the light over the optical fiber; and a computer-controlled spectrometer configured to receive the light over the optical fiber after the light has been filtered by the etalon filter and after the light has been reflected from or transmitted through the slab of material and spectrally analyze the light.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: January 1, 2019
    Assignee: APPLEJACK 199 L.P.
    Inventors: Wojciech Jan Walecki, Alexander Pravdivtsev