Patents Examined by Michael P Lapage
  • Patent number: 10352855
    Abstract: A method, apparatus and optical device for detecting a relationship between an evanescent field and Goos-Hänchen shift, said method comprising: obtaining a potential field function of an evanescent field acting on total-reflection light according to physical meanings of a force function and the potential field function of light in the evanescent field (S101); obtaining a wave function of the perturbed total-reflection light by means of the Schrödinger equation by combining with the potential field function of the evanescent field acting on total-reflection light (S102); and comparing the wave function of the perturbed total-reflection light with a wave function of free total-reflection light with no action from the evanescent field, and determining a momentum gained by the total-reflection light under the action of the evanescent field, which is the same in nature as a momentum of the evanescent field (S103).
    Type: Grant
    Filed: July 28, 2018
    Date of Patent: July 16, 2019
    Inventors: Ping Chen, Ming Li, Weiwei Liu, Lie Lin
  • Patent number: 10345228
    Abstract: Various embodiments of a dark reference standard for an instrument are described. In one embodiment, the dark reference standard includes a sample cup and an arrangement of dark reference standard materials. The arrangement of dark reference standard materials can be embodied as a dark glass, such as a welding glass, and a polymer film such as a carbon black or carbon black master polymer film.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 9, 2019
    Assignee: PROCESS SENSORS CORPORATION
    Inventors: Jerome J. Workman, Jr., John Glaberson
  • Patent number: 10337960
    Abstract: A method and a system for fast inspecting a vehicle based on a length measuring device, including: when a subject vehicle enters an inspection region, measuring a first length and a second length of the subject vehicle; determining whether the first length and the second length is respectively larger than or equal to a preset second length threshold; if so, determining whether a gap portion of the subject vehicle between a first portion and a second portion of the subject vehicle appears in a beam emitting region formed by a beam of radiation rays emitted by the system for fast inspecting a vehicle; and when the gap portion appears in the beam emitting region, emitting a beam of radiation rays of a first radiation dose to the subject vehicle according to the gap portion, wherein the subject vehicle moves with respect to the system for fast inspecting a vehicle.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: July 2, 2019
    Assignee: NUCTECH COMPANY LIMITED
    Inventors: Yanwei Xu, Weifeng Yu
  • Patent number: 10338009
    Abstract: A method and apparatus to measure specular reflection intensity, specular reflection angle, near specular scattered radiation, and large angle scattered radiation and determine the location and type of defect present in a first and a second transparent solid that have abutting surfaces. The types of defects include a top surface particle, an interface particle, a bottom surface particle, an interface bubble, a top surface pit, and a stain. The four measurements are conducted at multiple locations along the surface of the transparent solid and the measured information is stored in a memory device. The difference between an event peak and a local average of measurements for each type of measurement is used to detect changes in the measurements. Information stored in the memory device is processed to generate a work piece defect mapping indicating the type of defect and the defect location of each defect found.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: July 2, 2019
    Assignee: KLA-TENCOR CORPORATION
    Inventors: Steven W. Meeks, Ronny Soetarman
  • Patent number: 10330477
    Abstract: A ring laser gyroscope comprises a laser block that includes a resonant internal cavity defined by a plurality of surfaces of an optical closed loop pathway, and a plurality of electrodes coupled to the laser block. The electrodes are configured to generate a pair of counter-propagating laser beams from a lasing gas in the optical closed loop pathway. The ring laser gyroscope also includes a field reducer shield comprising an electrically conductive material, with the field reducer shield located completely within the laser block. The field reducer shield is configured to modify an electric field generated by the plurality of electrodes to substantially prevent ions in the laser block from migrating toward the plurality of surfaces of the optical closed loop pathway.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: June 25, 2019
    Assignee: Honeywell International Inc.
    Inventors: Stephen Matthew Baker, Dean Eivind Johnson, Matthew Clark
  • Patent number: 10324023
    Abstract: The invention provides a combination of a sample container and energy dispersion device. Among possible applications is construction of compact spectrometers optimized for single use. The sample container includes diffraction gratings such that, when the container is illuminated with collimated light and observed with optics focused at infinity, one obtains an optical spectrum useful for identifying and measuring the concentration of specimens placed in the container, applicable for chemical analysis and for screening fluids for chemical or biological analysis. The invention further provides methods to fabricate a combination of a sample container and energy dispersion device, wherein one such method utilizes temperature controlled templates to emboss gratings on outside and inside faces of a cuvette.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: June 18, 2019
    Inventor: Alexander Scheeline
  • Patent number: 10317656
    Abstract: An optical tomography apparatus comprises: a polychromatic light source, a one-dimensional optical sensor, an interferometric microscope, a one-dimensional confocal spatial filtering system, an actuation system making it possible to perform a one-way scan depthwise of an object to be observed and a processor for reconstructing a two-dimensional image of a section of the object from a plurality of one-dimensional interferential images acquired by the image sensor during the one-way scan. An optical tomography method based on use of such an apparatus is also provided.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: June 11, 2019
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Institut d'Optique Graduate School, UNIVERSITE PARIS SUD 11
    Inventor: Arnaud Dubois
  • Patent number: 10302533
    Abstract: A system for transferring a fluid sample in a fluid cell, includes a first and a second fluid circuit connected, respectively, to a first and a second inlet-outlet (1, 2) of a fluid cell (10), first injection elements (80) configured so as to inject, in series, into the first fluid circuit (11, 12, 13): a buffer solution, a first separation fluid volume followed by a fluid sample, then a second separation fluid volume and another buffer solution. The system includes first discharge elements arranged on the first fluid circuit near the first inlet-outlet (1), second injection elements (90, 91) arranged on the second fluid circuit (21, 22, 23) near the second inlet-outlet (2), and two-way circulation elements configured so as to circulate the fluid sample in two opposite directions in the fluid cell (10) without the passage of separation fluid into the fluid cell (10).
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: May 28, 2019
    Assignee: HORIBA JOBIN YVON SAS
    Inventors: Emmanuel Maillart, Cecile Lerondeau, Geraldine Melizzi, Didier-Luc Brunet, Denis Cattelan
  • Patent number: 10288429
    Abstract: In one embodiment, a method is provided. The method comprises transmitting a first laser pump signal to an optical resonator; adjusting a frequency of the first laser pump signal; generating a first order Stokes signal from the first laser pump signal in an optical resonator; measuring a first beat signal frequency; ceasing transmission of the first laser pump signal to the optical resonator; transmitting a second laser pump signal to the optical resonator; adjusting a frequency of the second laser pump signal; generating a first order Stokes signal from the second laser pump signal in the optical resonator; and measuring a second beat signal frequency; ceasing transmission of the second laser pump signal to the optical resonator.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: May 14, 2019
    Assignee: Honeywell International Inc.
    Inventors: Tiequn Qiu, Jianfeng Wu, Matthew Wade Puckett
  • Patent number: 10288489
    Abstract: There is provided a wavefront measuring method for obtaining wavefront information of an optical system. The method including: irradiating the optical system with a light beam; allowing the light beam passed via the optical system to come into a diffraction grating having periodicity in a first direction; and obtaining the wavefront information based on an interference fringe formed by light beams generated from the diffraction grating. The diffraction grating including: first portions which allow light to pass therethrough; and second portions which shield light, each of the second portions being provided between two of the first portions. A ratio between a width of one of the first portions in the first direction and a width of one of the second portions in the first direction is changed in the first direction, the one of the first portions and the one of the second portions being adjacent to each other.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: May 14, 2019
    Assignee: NIKON CORPORATION
    Inventors: Katsura Otaki, Katsumi Sugisaki, Takashi Gemma
  • Patent number: 10274398
    Abstract: An optical line testing device for measuring at least a cutting position of an optical line according to the present invention includes: a first wavelength tunable laser source configured to generate a first optical signal in which a plurality of wavelengths appear alternately and periodically; a second wavelength tunable laser source configured to generate a second optical signal which is identical to the first optical signal but has an adjustable delay time; and an interferometer configured to cause interference between a reflected optical signal, corresponding to the first optical signal, which is returning after having been emitted to the optical line, and the second optical signal to output an interference signal.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: April 30, 2019
    Assignee: SOLiD, INC.
    Inventor: Keewoon Na
  • Patent number: 10269525
    Abstract: A liquid sampling, atmospheric pressure, glow discharge (LS-APGD) device as well as systems that incorporate the device and methods for using the device and systems are described. The LS-APGD includes a hollow capillary for delivering an electrolyte solution to a glow discharge space. The device also includes a counter electrode in the form of a second hollow capillary that can deliver the analyte into the glow discharge space. A voltage across the electrolyte solution and the counter electrode creates the microplasma within the glow discharge space that interacts with the analyte to move it to a higher energy state (vaporization, excitation, and/or ionization of the analyte).
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: April 23, 2019
    Assignees: Clemson University Research Foundation, Battelle Memorial Institute on behalf of Pacific Northwest National Laboratory, The Regents of the University of California—Lawrence Berkeley National Laboratory
    Inventors: R. Kenneth Marcus, Charles Derrick Quarles, Jr., Richard E. Russo, David W. Koppenaal, Charles J. Barinaga, Anthony J. Carado
  • Patent number: 10260863
    Abstract: Interferometer (10) for the real-time measurement of absolute distances and/or relative position movements between a first and a second machine part, comprising a measurement unit (20) and a reflector unit (40). wherein the measurement unit (20) comprises a housing (21) with at least one wall made of heat-conducting material, wherein several measurement elements are arranged in the housing (21), wherein the measurement elements comprise: a laser source (22), a Peltier element (24) and a digital control (23) wherein the measurement elements are thermally coupled to the wall of the housing (21) made of heat-conducting material.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: April 16, 2019
    Assignee: attocube systems AG
    Inventors: Martin Zech, Klaus Thurner
  • Patent number: 10254105
    Abstract: An interferometric measuring machine includes an exchangeable lens module system for an optical probe. The probe includes a lens body containing the optical apparatus of an interferometer and a lens module containing an objective lens along an object arm of the interferometer that can be exchanged with other lens modules for varying the measuring characteristics of the probe. The lens modules are adapted to accommodate objective lenses having different focal lengths while maintaining a desired optical path length of the object arm of the interferometer.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: April 9, 2019
    Assignee: Quality Vision International, Inc.
    Inventor: David B. Kay
  • Patent number: 10247538
    Abstract: A system is provided for measuring distance or displacement, comprising: first and second laser sources configured to provide first and second laser outputs; a beam combiner configured to receive and combine at least part of the first and second laser outputs into a combined laser output; a signal calibrator configured to receive at least part of the first laser output, the second laser output, or the combined laser output, and output a calibration signal; a plurality of optical paths, including a first optical path, a second optical path, the plurality of optical paths being configured to direct at least part of the combined beam onto an optical detector to produce an interference signal; and a signal processor configured to receive the interference signal and determine a pathlength difference between the first and second optical paths.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: April 2, 2019
    Assignee: Bridger Photonics, Inc.
    Inventors: Peter Roos, Michael Thorpe, Jason Brasseur
  • Patent number: 10241417
    Abstract: There is disclosed a polarization-modulating element for modulating a polarization state of incident light into a predetermined polarization state, the polarization-modulating element being made of an optical material with optical activity and having a circumferentially varying thickness profile.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: March 26, 2019
    Assignee: NIKON CORPORATION
    Inventors: Osamu Tanitsu, Koji Shigematsu, Hiroyuki Hirota, Tomoyuki Matsuyama
  • Patent number: 10241027
    Abstract: Cuvette, comprising at least one measuring area on each one of two arms that are pivotally connected to each other such that from a swung-apart condition, they can be swung together into a measuring position in which the two measuring areas have a distance for positioning a sample between the measuring areas, and means for positioning the two arms in a measuring position in a cuvette shaft of an optical measuring device with a sample between the two measuring areas in a beam path of the optical measuring device that crosses the cuvette shaft.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 26, 2019
    Assignee: Eppendorf AG
    Inventors: Kurt Harnack, Helmut Knofe, Peter Scheffler, Wolfgang Goemann-Thoss, Sven Eikelmann, Christoph Jolie
  • Patent number: 10234770
    Abstract: There is disclosed a polarization-modulating element for modulating a polarization state of incident light into a predetermined polarization state, the polarization-modulating element being made of an optical material with optical activity and having a circumferentially varying thickness profile.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: March 19, 2019
    Assignee: NIKON CORPORATION
    Inventors: Osamu Tanitsu, Koji Shigematsu, Hiroyuki Hirota, Tomoyuki Matsuyama
  • Patent number: 10222328
    Abstract: A method for detecting and counting particles suspended in fluids, such as bacteria suspended in urine, utilizing dynamic features of the suspended particles and employing light scattering measurements. The disclosed method is suitable for determining the susceptibility of bacteria to antibiotics. A cuvette for detecting bacteria in fluids, which is especially suited for the light scattering measurements, is provided.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: March 5, 2019
    Assignee: BacterioScan LTD.
    Inventor: Amnon Weichselbaum
  • Patent number: 10215697
    Abstract: A method and apparatus for measuring 3D refractive-index tomograms using a wavefront shaper in ultra-high speed and high precision is provided. The method includes the steps of modifying at least one of an illumination angle and a wavefront pattern of an incident ray through the wavefront shaper and leading the modified incident ray to a sample, measuring a 2D optical field, which passes through the sample, through an interferometry along at least one or more of the incident rays, and obtaining 3D refractive-index tomograms through measured information of the 2D optical field.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: February 26, 2019
    Assignee: TOMOCUBE, INC.
    Inventors: YongKeun Park, Kyoohyun Kim, Seungwoo Shin