Having A Short Coherence Length Source Patents (Class 356/479)
  • Patent number: 11320255
    Abstract: A digital measuring device implemented on a photonic integrated circuit, the digital measuring device including a tunable laser source implemented on the photonic integrated circuit configured to sweep over a frequency range to provide multi-wavelength light, a first waveguide structure implemented on the photonic integrated circuit configured to direct a first portion of light from the laser source at a moving object and receive light reflected from the moving object, a second waveguide structure implemented on the photonic integrated circuit configured to combine a second portion of light from the laser source with the light reflected from the moving object to produce a measurement beam, and a first detector implemented on the photonic integrated circuit configured to detect intensity values of the measurement beam to measure a distance between the digital measuring device and the moving object.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: May 3, 2022
    Assignee: RAYTHEON COMPANY
    Inventors: Richard Lee Kendrick, Joseph Marron
  • Patent number: 11313760
    Abstract: Disclosed is a device and a method for measuring Fabry-Parot (FP) transmittance curve by using a whispering gallery mode laser source. The device includes: a seed laser, a first polarizer, a second polarizer, a spectroscope, a beam reduction system, a lens, and Polydimethylsiloxane (PDMS) microfluidic chip arranged in sequence.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: April 26, 2022
    Assignee: HEFEI INSTITUTE OF PHYSICAL SCIENCE, CHINESE ACADEMY OF SCIENCES
    Inventors: Dong Liu, Yufei Chu, Yingjian Wang, Decheng Wu, Zhenzhu Wang, Kunming Xing, Zhiqiang Kuang, Bangxin Wang, Zhiqing Zhong, Aiyuan Fan, Chenbo Xie
  • Patent number: 11313669
    Abstract: Methods and systems for focusing and measuring by mean of an interferometer device, having an optical coherence tomography (OCT) focusing system, by separately directing an overlapped measurement and reference wavefront towards a focus sensor and towards an imaging sensor; where a predefined focusing illumination spectrum of the overlapped wavefront is directed towards the focus sensor, and where a predefined measurement illumination spectrum of the overlapped wavefront is directed towards the imaging sensor. Methods and systems for maintaining focus of an interferometer device, having an OCT focusing system, during sample's stage moves.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: April 26, 2022
    Assignee: KLA-Tencor Corporation
    Inventors: Amnon Manassen, Andrew Hill
  • Patent number: 11274915
    Abstract: Methods, devices and systems are described that use a combination multiple light sources having different coherence lengths to measure surface characteristics of an object. One example system includes a two laser sources configured to operate at a first and a second center wavelength, a broadband source configured to operate at a range of wavelengths outside of the operating range of the at least two lasers, a phase mask array and a color filter arranged, respectively, to impart different phase delays and provide spectral filtering corresponding to the emitted radiation from the sources. A pixelated sensor device is positioned to simultaneously measure intensity values associated with a plurality of interferograms formed due to interference of light from the light sources after propagation through the phase mask array and the color filter. The measured intensity values enable the determination of surface characteristics of the object.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: March 15, 2022
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventors: Stanley Pau, Rongguang Liang
  • Patent number: 11268806
    Abstract: Systems and methods for dynamic locking of optical path times using entangled photons are provided. A system includes an optical source for generating bi-photons; tracer laser beam sources for generating tracer laser beams; telescopes that emit the tracer laser beams and the bi-photons to remote reflectors, each bi-photon traveling along an optical path in a pair of optical paths toward a corresponding remote reflector, wherein the telescopes receive reflected bi-photons from the remote reflectors; and communication links, wherein the optical source respectively communicates with first and second remote reflectors through a first and second communication link. Also, the optical source uses the tracer laser beams and the communication links to respectively point the bi-photons towards the remote reflectors.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: March 8, 2022
    Assignee: Honeywell International Inc.
    Inventors: Chad Fertig, David Campagna, Karl D. Nelson
  • Patent number: 11269169
    Abstract: In some embodiments, a SCAPE system routes light from a tilted intermediate image plane to an infinity space disposed behind a third objective. A first beam splitter positioned in the infinity space routes light from the intermediate image plane with different wavelengths in different directions. First and second light detector arrays capture first and second wavelength images, respectively, and optical components route light having the first and second wavelength towards the first and second light detectors, respectively. In some embodiments, a SCAPE system is used to capture a plurality of images while a sample is perturbed (e.g., vibrated, deformed, pushed, pulled, stretched, or squeezed) in order to visualize the impact of the perturbation on the sample.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: March 8, 2022
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Elizabeth M. C. Hillman, Kripa B. Patel
  • Patent number: 11259702
    Abstract: An optical coherence tomographic (OCT) system includes a sample arm, a reference arm and an OCT probe. The probe irradiates a bodily lumen and a fluid contained within the bodily lumen with light of a sample beam transmitted through a double-clad fiber (DCF). A first detector detects light of a reference beam and light reflected from the bodily lumen and propagated through the core of the DCF to generate OCT interference signals. Light backscattered by the bodily lumen and by the fluid contained in the bodily lumen is propagated through a cladding of the DCF and detected by a second detector to generate an intensity signal. A processor analyzes the intensity signal, and triggers a pullback of the probe and initiates recording of OCT images of the bodily lumen in response to the intensity the backscattered light reaching a predetermined threshold value.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: March 1, 2022
    Assignee: Canon U.S.A., Inc.
    Inventor: Daisuke Yamada
  • Patent number: 11229355
    Abstract: An OCT imaging method of some exemplary aspects includes acquiring a first three dimensional data set by applying an OCT scan targeting a first three dimensional region of a sample, creating a first two dimensional map based on representative intensity values respectively of a plurality of pieces of A-scan data included in the first three dimensional data set, designating a second three dimensional region of the sample based on the first two dimensional map, acquiring a second three dimensional data set by applying an OCT scan targeting the second three dimensional region, and generating image data from at least part of the second three dimensional data set.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: January 25, 2022
    Assignee: TOPCON CORPORATION
    Inventors: Hisashi Tsukada, Atsushi Kubota, Yasufumi Fukuma
  • Patent number: 11206985
    Abstract: A non-invasive optical detection system and method are provided. Sample light is delivered into a target volume of interest, whereby the sample light is scattered by the target volume of interest, resulting in a sample light pattern that exits the anatomical structure. Reference light is combined with the sample light pattern to generate at least one interference light pattern, each of which may have a time varying interference component that integrates to a first value in the absence of the physiological event, and that integrates to a second greater value in the presence of the physiological event. Intensities of spatial components of each interference light pattern are detected during a measurement period. A function of the detected spatial component intensities of the interference light pattern(s) is analyzed, and a presence of the physiological event in the target volume of interest is determined based on the analysis.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: December 28, 2021
    Assignee: HI LLC
    Inventors: Jamu Alford, Adam Marblestone
  • Patent number: 11204325
    Abstract: A system includes a laser (1) operative to emit a light beam, a beam splitter (2) arranged to split the light beam into a first beam and a second beam, the first beam being directed to a nonlinear converter (8) that generates a signal beam having a Stokes-shifted wavelength, a recombiner (9) arranged to recombine the signal beam with the second beam to form a recombined beam which is directed to a tapered optical fiber (5) located within a material to be monitored, and a detector (7) arranged to detect light emitted by the tapered optical fiber (5) and which uses stimulated Raman spectroscopy to detect a chemical in the material.
    Type: Grant
    Filed: May 26, 2019
    Date of Patent: December 21, 2021
    Assignee: Soreq Nuclear Research Center
    Inventors: Bruno Sfez, Shaul Pearl, Sharone Goldring, Yoav Sintov
  • Patent number: 11191492
    Abstract: A retinal structure and function forecasting method, system, and computer program product include producing an enriched feature representation of clinical measurements and clinical data combined with optical coherence tomography (OCT) data, training a forecasting model with the enriched feature representation, and forecasting a retinal structure at a forecast date based on the trained forecasting model.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: December 7, 2021
    Assignees: International Business Machines Corporation, New York University
    Inventors: Suman Sedai, Bhavna Josephine Antony, Rahil Garnavi, Hiroshi Ishikawa
  • Patent number: 11193754
    Abstract: The invention relates to an OCT system with an OCT light source for emitting OCT light into an object beam path and a reference beam path. The system comprises a detector for detecting an interference signal produced by the object beam path and the reference beam path. A polarization-dependent delay element is arranged in the object beam path. The invention also relates to a corresponding OCT method. The invention allows the effects of parasitic reflections to be reduced.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: December 7, 2021
    Assignee: Haag-Streit AG
    Inventors: Peter Stalder, Lucio Robledo
  • Patent number: 11187517
    Abstract: Optical coherent receiver arrays are described. The optical coherent receiver arrays include an integrated array of photodetectors separated by integrated mirrors which may cause interference of received free space optical and local oscillator signals. The mirrors may serve as splitters, helping to align the received signal and local oscillator to cause interference. The photodetectors of the optical coherent receiver array may be electrically coupled in various manners to read out the signals. The optical coherent receiver array may be implemented in an optical coherence tomography (OCT) imaging system in some embodiments.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: November 30, 2021
    Assignee: Acacia Communications, Inc.
    Inventor: Christopher Doerr
  • Patent number: 11187679
    Abstract: Disclosed herein is a laser ultrasonic testing (UT) apparatus for inspecting a surface of an object. The laser UT apparatus comprises an excitation laser, which is selectively operable to generate an excitation laser beam. The laser UT apparatus also comprises a first acousto-optic deflector (AOD) and a second AOD. The laser UT apparatus additionally comprises a detection laser, which is selectively operable to generate a detection laser beam. The laser UT apparatus further comprises a third AOD and a fourth AOD.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: November 30, 2021
    Assignee: The Boeing Company
    Inventor: Morteza Safai
  • Patent number: 11187519
    Abstract: In an OCT imaging, a focus position in a tomographic image is determined by a first distance, a second adjustment amount, a third adjustment amount and a refractive index of a medium. The first distance is a distance between a first surface and a second surface of a wall part of a container. The second adjustment amount is a focus position adjustment amount of an objective optical system at which an intensity of reflected light from the second surface is maximized when a reference mirror is positioned at a position where an object optical path length to the first surface and a reference optical path length are equal in a condition that the objective optical system is focused on the first surface. The third adjustment amount is a focus position adjustment amount in the imaging.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: November 30, 2021
    Assignee: SCREEN HOLDINGS CO., LTD.
    Inventors: Keisuke Kato, Naoki Ishikawa
  • Patent number: 11166851
    Abstract: In certain embodiments, a system for controlling a position of a focal point of a laser beam comprises a beam expander, a scanner, an objective lens, and a computer. The beam expander controls the focal point of the laser beam and includes a mirror and expander optical devices. The mirror has a surface curvature that can be adjusted to control a z-position of the focal point. The expander optical devices direct the laser beam towards the mirror and receive the laser beam reflected from the mirror. The scanner receives the laser beam from the beam expander and manipulates the laser beam to control an xy-position of the focal point. The objective lens receives the laser beam from the scanner and directs the beam towards the target. The computer receives a depth instruction, and sets actuation parameters to control the surface curvature of the mirror according to the depth instruction.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: November 9, 2021
    Assignee: Alcon Inc.
    Inventor: Matthias Foesel
  • Patent number: 11152761
    Abstract: A laser device includes a laser configured to generate laser light and a laser control module configured to receive at least a portion of the laser light generated by the laser, to generate a control signal and to feed the control signal back to the laser for stabilizing the frequency, wherein the laser control module includes a tunable frequency discriminating element which is preferably continuously frequency tunable, and where the laser control module is placed outside the laser cavity.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: October 19, 2021
    Assignee: NKT PHOTONICS A/S
    Inventors: Jens E. Pedersen, Poul Varming, Christian V. Poulsen, Thomas O. Fagerhøj, Bjarke Gøth, Henrik Sørensen
  • Patent number: 11144799
    Abstract: An image classification method, a computer device, and a medium are disclosed. The method includes: acquiring a middle-level semantic feature of an image to be classified through a visual dictionary; and classifying the image to be classified according to the middle-level semantic feature of the image to be classified using a classification model based on middle-level semantic features.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: October 12, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiangjun Peng, Yunqi Wang, Chenxi Zhao, Yachong Xue, Gang Li, Yaoyu Lv, Shuo Zhang, Huidong He, Yadong Ding, Minglei Chu, Lili Chen, Hao Zhang
  • Patent number: 11143498
    Abstract: Interferometer system, including optical means (2, 3, 4, 5) arranged for directing light along a first interferometer path and (separate) second interferometer path, and for combining the light for allowing interferometry, characterized in that the first interferometer path (PI) is provided with a first light transmitting structure (10) having a rotational position that is adjustable with respect to an optical axis of the first path.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: October 12, 2021
    Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
    Inventors: Huibert Visser, Hedser Van Brug
  • Patent number: 11134841
    Abstract: An image acquisition apparatus includes a light source configured to emit light, a dividing unit configured to divide the light from the light source into reference light and measurement light, an image forming unit configured to form a tomographic image of a subject based on interfered light in which return light from the subject irradiated with the measurement light and the reference light are interfered, a focus adjusting unit configured to adjust a focus of the measurement light, an optical-path-length adjusting unit configured to adjust an optical path length of the reference light, and a control unit configured to adjust the optical path length of the reference light by controlling the optical-path-length adjusting unit according a change in an optical path length of the measurement light caused by adjustment of the focus using the focus adjusting unit.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: October 5, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuji Katashiba, Kazuhiro Matsumoto
  • Patent number: 11098997
    Abstract: Disclosed herein are interferometric measurement systems and methods. In one exemplary embodiment an interferometric measuring system for measuring the distance to or displacement of an object includes: a light source; an interferometer with a measuring arm and a reference arm; a dispersive medium; and a detector. The interferometer is disposed between the light source and the object. The dispersive medium is arranged to unbalance the dispersion between the measurement arm and the reference arm. The detector is arranged to detect spectrum interference from the interferometer. In one example, the dispersive medium is a chirped fiber Bragg grating. In another example, the dispersive medium is a highly dispersive optical fiber. In one example, the light source is a broadband light source, and the detector includes a spectrometer. In another example, the light source is a wavelength swept laser, and the detector includes a photodetector or a balanced photodetector.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: August 24, 2021
    Inventors: Kam C. Lau, Yongwoo Park
  • Patent number: 11096609
    Abstract: Provided is a brain function measurement device capable of improving the reliability of brain function measurement using a simple configuration. The brain function measurement device includes light source probes LD2 and LD12 for irradiating the scalp of a test subject with light beams; linearly polarizing films P2 and P3 for polarizing the light beams emitted from the light source probes LD2 and LD12 in a first direction; a linearly polarizing film P1 for blocking components in the first direction of reflected light beams that are generated as the light beams emitted from the linearly polarizing film P2 and P3 are reflected by the hairs of the test subject; and a detection probe PD1 for detecting the intensity of a light beam that has passed through the linearly polarizing film P1.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: August 24, 2021
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventor: Toru Yamada
  • Patent number: 11089956
    Abstract: An ophthalmologic apparatus is configured to control an optical scanner so as to perform a scan by measurement light in an intersecting direction which intersects a traveling direction of the measurement light, to specify a scan length based on a detection result of interference light corresponding to the scan, the detection result being acquired by an interference optical system, the scan length being a length of a scan range in the intersecting direction within a characteristic region in an anterior segment of the subject's eye, and to specify a movement amount of the subject's eye based on a reference value of the characteristic region and the scan length.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: August 17, 2021
    Assignee: TOPCON CORPORATION
    Inventor: Makoto Saika
  • Patent number: 11092424
    Abstract: A method of providing optical coherence tomography (OCT) imaging may comprise using an on-chip frequency comb source interfaced with an OCT system by a circulator as an imaging source and reconstructing OCT images from resulting spectral data from target tissue illuminated by the imaging source.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: August 17, 2021
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Michal Lipson, Xingchen Ji, Alexander Klenner, Xinwen Yao, Yu Gan, Alexander L. Gaeta, Christine P Hendon
  • Patent number: 11054241
    Abstract: A three-dimensional measurement device includes: an optical system that splits incident light into two lights and radiates lights to a measurement object and to a reference surface, and recombines the two lights to emit combined light; a first irradiator that emits first light including first polarized light and entering a first surface; a second irradiator that emits second light including second polarized light and entering a second surface; a first imaging system to which the first output light enters wherein the first output light is emitted from the first surface when the first light enters the first surface; a second imaging system to which the second output light enters wherein the second output light is emitted from the second surface when the second light enters the second surface; and an image processor that performs three-dimensional measurement based on interference fringe images obtained by the first and second imaging systems.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: July 6, 2021
    Assignee: CKD CORPORATION
    Inventors: Hiroyuki Ishigaki, Takahiro Mamiya
  • Patent number: 11054494
    Abstract: Techniques are disclosed related to recording a magnetic resonance image data set of a region of a patient with a magnetic resonance device using a multislice imaging technique. The multislice technique may be applied simultaneously with at least partial undersampling in a slice plane. The magnetic resonance data may be read out from a set of excited slices simultaneously and, by means of a slice separation algorithm that is calibrated using reference data recorded in a separate reference scan, may be allocated to the simultaneously read-out slices. Subsequently, an undersampling algorithm compensating for the undersampling in the slice plane may be applied to the undersampled magnetic resonance data of the individual slices.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: July 6, 2021
    Assignee: Siemens Healthcare GmbH
    Inventors: Mario Zeller, Flavio Carinci, Dominik Paul
  • Patent number: 11033190
    Abstract: A catheter system for optical coherence tomography includes an elongate catheter body, an optical fiber in the elongate catheter body, and an anamorphic lens assembly coupled with a distal end of the optical fiber. The optical fiber and the lens assembly are together configured to provide a common path for optical radiation reflected from a target and from a reference interface between the distal end of the optical fiber and the lens assembly.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: June 15, 2021
    Assignee: Avinger, Inc.
    Inventors: Himanshu N. Patel, Manish Kankaria, Kin F. Chan
  • Patent number: 11029141
    Abstract: A system and method for surface inspection of an object using optical coherence tomography (OCT) with anticipatory depth of field adjustment is provided. The method includes determining a present working distance and one or more forward working distances; determining a present depth of field in which the surface of the object is in focus at the location of the present working distance and at as many of the consecutive forward surface locations as determined possible; changing to the present depth of field; performing an A-scan of the object; moving the object such that the scanner head is directed at each of the consecutive forward surface locations determined to be in the present depth of field; and performing an A-scan at each of the consecutive forward surface locations determined to be in the present depth of field.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: June 8, 2021
    Assignee: SIGHTLINE INNOVATION INC.
    Inventors: Wallace Trenholm, Lorenzo Pons
  • Patent number: 11026580
    Abstract: An OCT (Optical Coherence Tomography) handheld device is provided comprising: a housing configured for handheld OCT scanning during a surgical procedure, the housing comprising an OCT scanning end and a proximal end opposite the OCT scanning end; an OCT scanning device inside the housing, the OCT scanning device configured for one or more of OCT polarized scanning and Doppler OCT scanning from the OCT scanning end, the OCT scanning device further configured to receive and convey OCT light between the proximal end and an OCT analysing system; and a tip extending from the OCT scanning end, the tip being removably attached to the OCT scanning end, the tip configured to receive and collect the OCT light therethrough. The OCT handheld device is configured to be removably draped around the tip, for use in the surgical procedure.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: June 8, 2021
    Assignee: SYNAPTIVE MEDICAL INC.
    Inventors: Siu Wai Jacky Mak, Ho Yiu Cheng, Fangxin Li, Harshul Varma
  • Patent number: 11026581
    Abstract: An optical probe for detecting a biological tissue includes a surface imaging module and a tomography capturing module. The surface imaging module captures and creates a surface image of the biological tissue, and at least includes a light source emitting a first detecting light. The tomography capturing module captures a tomography image of the biological tissue and receives a second detecting light. The first detecting light passes via a first optical path from the light source to an imaging sensor through the biological tissue, a telecentric lens, a first optical mirror, and a lens assembly in sequence. The second detecting light passes via a second optical path from a first collimator to the first collimator through a scanner, the first optical mirror, the telecentric lens, the biological tissue, the telecentric lens, the first optical mirror, the scanner, and the first collimator in sequence.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 8, 2021
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chy-Lin Wang, Yuan-Chin Lee, Chun-Chieh Huang, Hung-Chih Chiang, Chih-Ming Cheng, Shuen-Chen Chen
  • Patent number: 11016036
    Abstract: To provide a reflected light measurement device capable of efficiently performing disconnection inspection on an optical connector, and a plurality of optical fibers. The reflected light measurement device 1 includes a laser light source 2, a beam splitter 3 that branches measurement laser light L into measurement laser light L1 to be transmitted and reference laser light L2 to be reflected, a reference mirror 4 including an optical path length varying mechanism capable of adjusting an optical path length of the reference laser light L2, an optical path length switching unit 5, and switches the optical path length of the reference laser light L2 to a plurality of fixed lengths, and a photometer 6 that receives measurement laser light L1? reflected at defect sites D1 and D2 such as disconnection inside connectors C1 and C2, and reference laser light L2? reflected by the reference mirror 4.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: May 25, 2021
    Assignee: OPT GATE CO., LTD.
    Inventor: Masayuki Tanaka
  • Patent number: 10992924
    Abstract: Systems and methods for stereo-polarimetric compressed-sensing ultrafast imaging.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: April 27, 2021
    Assignee: California Institute of Technology
    Inventors: Lihong Wang, Peng Wang, Jinyang Liang, Liren Zhu
  • Patent number: 10991097
    Abstract: Techniques for generating an overlay map on a digital medical image of a slide are provided, and include cell detection and tissue classification processes. Techniques include receiving a medical image, separating the image into tiles, and performing tile classifications and tissue classifications based on a multi-tile analysis. Techniques additionally include identifying cell objects in the image, separating the image into and displaying polygons identifying the cell objects and cell classifications. Generated displays may be overlays over the initial digital image.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: April 27, 2021
    Assignee: TEMPUS LABS, INC.
    Inventors: Stephen Yip, Irvin Ho, Lingdao Sha, Boleslaw Osinski
  • Patent number: 10980411
    Abstract: An information processing apparatus includes an acquisition unit configured to acquire a plurality of data sets each of which includes a plurality of pieces of tomographic data that represents a section of a fundus, the plurality of data sets not including the same tomographic data as each other, a first generation unit configured to generate at least one motion contrast image from each of the plurality of data sets acquired by the acquisition unit, without generating a motion contrast image from across the data sets acquired by the acquisition unit, and a second generation unit configured to generate a single motion contrast image representing a cross section at a predetermined position in the fundus, based on the motion contrast image generated from at least one of the plurality of data sets.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: April 20, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomasz Dziubak, Tomasz Bajraszewski, Sławomir Orłowski, Hiroshi Imamura
  • Patent number: 10955327
    Abstract: Apparatus and methods for determining information about at least one particle by measuring light scattered from the particles. Scattered light is combined with light from a light source to produce an optical interference signal utilizing a plurality of beam splitting functions. Scattered light signals are corrected for signal components which are not derived from particle scatter.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: March 23, 2021
    Inventor: Michael Trainer
  • Patent number: 10955618
    Abstract: A fiber coupling device (100) includes the following components: a wedge plate (102) for receiving light and refracting the light in a predetermined direction, a condenser lens (104) for collecting the light refracted by the wedge plate (102); and an optical fiber (107) having an incident surface for receiving the light collected by the condenser lens (104). The wedge plate (102) is held rotatable around the optical axis (200) of the light incident on the wedge plate (102). The light refracted by the wedge plate (102) and collected by the condenser lens (104) is incident on a different point on the incident surface depending on the rotation angle of the wedge plate (102).
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 23, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masatoshi Nishio, Hitoshi Nishimura, Jingbo Wang, Makoto Ryudo, Doukei Nagayasu, Hideaki Yamaguchi, Yoshiaki Takenaka, Kiyotaka Eizumi, Ryo Ishikawa, Yasushi Mukai
  • Patent number: 10952599
    Abstract: A lightfield otoscope includes a housing with a tip configured to receive a disposable speculum. The otoscope also includes a microlens array, a sensor array and an optical train contained within the housing. The optical train includes an objective lens and a relay lens. The objective lens is positioned at least partially within the tip. The relay lens is used to relay an image plane of the objective lens to the microlens array and to relay a pupil plane of the objective lens to the sensor array. An active heating element is also contained within the housing and positioned to heat the front surface, thereby reducing fogging and/or condensation on the front surface.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: March 23, 2021
    Assignee: Ricoh Company, LTD.
    Inventors: Jonathan Frieman Brand, Noah Denis Bedard, Manuel Martinello
  • Patent number: 10952603
    Abstract: Various methods and systems for improved anterior segment optical coherence tomography (OCT) imaging are described. One example method includes collecting a set of OCT data of the cornea of the eye; segmenting the set of OCT data to identify one or more corneal layers; fitting a two-dimensional model of corneal surfaces to the one or more corneal layers; determining motion-correction parameters by minimizing error between the one or more corneal layers and the two-dimensional model of the corneal surfaces; and creating a motion-corrected corneal image dataset from the set of OCT data using the motion-correction parameters. The motion-corrected corneal image dataset can be used to create a model of the anterior and/or posterior surfaces of the cornea. The model of the cornea is used to generate high density and motion-artifact free epithelial thickness maps, which are used for identifying or quantifying pathology such as keratoconus.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 23, 2021
    Assignee: CARL ZEISS MEDITEC, INC.
    Inventor: Homayoun Bagherinia
  • Patent number: 10942259
    Abstract: A technique that can maximize signal to noise ratio in systems that use beam steering, by steering both the transmit and receive signals. A beam splitter is used, which is positioned to receive both the light beam transmitted by the light source and the return light beam, and a scanning beam steerer, which is positioned to receive both transmitted light from the beam splitter and returning light from the target. Using a split portion of the beam, a reference signal can be provided to probe the ambient condition of the sensor, to sense conditions such as darkness and fog.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: March 9, 2021
    Assignee: TDK Corporation
    Inventor: Ebrahim Forati
  • Patent number: 10921247
    Abstract: An optical receiver is provided that includes an array of photoreceivers. Each photoreceiver may be configured to receive a respective portion of a speckle pattern generated by interaction between an object beam and a scattering medium and each photoreceiver may be configured to generate respective electrical detection signals for provision to processing circuitry for summing of the electrical detection signals. A photoreceiver may include a collector, first detector and second detectors, and first and second optical splitters. The photoreceiver may be configured to generate a first electrical detection signal and a second electrical detection signal based on a received portion of the speckle pattern.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: February 16, 2021
    Assignee: The Johns Hopkins University
    Inventors: Jeremiah J. Wathen, Scott M. Hendrickson, Tomasz M. Kott, David W. Blodgett
  • Patent number: 10921718
    Abstract: A position encoder for monitoring relative movement between a first object and a second object includes a grating that is coupled to the first object, and an image sensor assembly that is coupled to the second object. The image sensor includes a first image sensor; a second image sensor that is spaced apart from the first image sensor; an optical element that includes a first optical surface and a second optical surface that is spaced apart from the first optical surface; and an illumination system.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: February 16, 2021
    Inventors: Zhiqiang Liu, Eric Goodwin, Goldie Goldstein
  • Patent number: 10891748
    Abstract: A method of processing optical coherence tomography (OCT) scans through a subject's skin, the method comprising: receiving a plurality of scans through the subject's skin, the scans representing an OCT signal in slices through the user's skin at different times; comparing the scans to determine time-varying regions in the scans; determining a depth-distribution of the time varying regions.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: January 12, 2021
    Assignee: Michelson Diagnostics Ltd.
    Inventors: Jonathan D. Holmes, Richard Whitehead
  • Patent number: 10890433
    Abstract: A thickness measuring apparatus for measuring a thickness of a wafer includes a light source emitting light having a transmission wavelength region to the wafer, a focusing unit applying the light emitted from the light source to the wafer held on a chuck table, an optical branching section branching the light reflected on the wafer held on the chuck table, a diffraction grating diffracting the reflected light branched by the optical branching section to obtain diffracted light of different wavelengths, an image sensor detecting an intensity of the diffracted light obtained by the diffraction grating to produce a spectral interference waveform, and a computing unit computing the spectral interference waveform produced by the image sensor to output thickness information.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: January 12, 2021
    Assignee: DISCO CORPORATION
    Inventors: Nobuyuki Kimura, Keiji Nomaru
  • Patent number: 10876972
    Abstract: An improved hyperspectral Raman imaging system and device that obtains full scale Raman images from a sample surface in seconds, wherein the dichromic mirror is located between the objective lens and sample surface. The laser is delivered to the sample surface and the Raman image is collected and transmitted through optic fiber to a camera after filtration. By delivering the laser to the sample without going through the objective lens, a high-power laser can safely illuminate the full field of view of the objective lens, allowing for safe Raman imaging within seconds. This fast and safe Raman imaging system can be used for, among other applications, the early detection of dental caries in practical settings.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: December 29, 2020
    Assignee: Jackson State University
    Inventor: Shan Yang
  • Patent number: 10849595
    Abstract: An imaging apparatus is disclosed for diagnosis including a plurality of transmitting and receiving units, an error of a scale of a tomographic image to be generated is reduced. The imaging apparatus can include including acquisition means for acquiring a propagation velocity of an ultrasound signal of a flushing liquid, generation means for generating ultrasound line data based on the propagation velocity of the ultrasound signal in a blood vessel tissue, and conversion means for converting positional information of each position within a range in which the flushing liquid flows regarding the ultrasound line data generated by the generation means based on a ratio between the propagation velocity in the blood vessel tissue and the propagation velocity in the flushing liquid. A tomographic image of a blood vessel is constructed by using the ultrasound line data converted by the conversion means.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: December 1, 2020
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Ema Itoh, Isao Mori
  • Patent number: 10849495
    Abstract: An optical coherence tomography (OCT) system includes: a light source; a multi-focal delay line; and a light detector. The multi-focal delay line includes: a positive lens; and an optical switch configured to: receive a light from the light source; selectively direct the sample light to the positive lens via a selected one of a plurality of light interfaces each located a different distance from the focal plane of the positive lens; and direct the sample light to an object to be measured. The light detector is configured to receive return light returned from the object to be measured in response to the sample light, and to receive a reference light produced from the light from the light source, and in response thereto to detect at least one interference signal. An associated OCT method may be performed with the OCT system.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: December 1, 2020
    Assignee: AMO Development, LLC
    Inventors: Paul Pulaski, Daniel R. Neal, Thomas D. Raymond, Stephen W. Farrer, Daniel R. Hamrick, Richard J. Copland
  • Patent number: 10845588
    Abstract: In an optical scanner 100, a vibration portion 101 includes first and third elements 3021 and 3023 that vibrate a light guide path 102 in a direction substantially perpendicular to an optical axis direction, and second and fourth elements 3022 and 3024 that vibrate the light guide path in a direction substantially perpendicular to a vibration direction thereof. A driving signal is applied to each of electrodes 3011 to 3014, each of which corresponds to one electrode of each of the first to fourth elements, and the other electrode 3015 is used as a common electrode having a floating potential. A driving signal generator 1007 generates a driving signal such that a median value of driving signals Vy1and Vy2 applied to the first and third elements and a median value of driving signals Vx1 and Vx2 applied to the second and fourth elements correspond to substantially the same value.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 24, 2020
    Assignee: HITACHI, LTD.
    Inventors: Takahiro Matsuda, Yoshiho Seo, Satoshi Ouchi, Shinsuke Onoe
  • Patent number: 10846892
    Abstract: An apparatus includes: an acquisition unit configured to acquire pieces of three-dimensional data of a subject eye obtained at different times, the three-dimensional data including pieces of two-dimensional data obtained at different positions; a first planar alignment unit configured to perform first planar alignment including alignment between the pieces of three-dimensional data in a plane orthogonal to a depth direction of the subject eye; a first depth alignment unit configured to perform first depth alignment including alignment between pieces of two-dimensional data in at least one piece of three-dimensional data among the pieces of three-dimensional data and further including alignment between the pieces of three-dimensional data in the depth direction; and a generation unit configured to generate interpolation data of at least one piece of three-dimensional data among the pieces of three-dimensional data by using a result of the first planar alignment and a result of the first depth alignment.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: November 24, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshihiko Iwase, Hiroki Uchida
  • Patent number: 10835124
    Abstract: Disclosed is a polarization sensitive optical coherence tomography apparatus and control method thereof. According to the polarization sensitive optical coherence tomography apparatus and control method thereof of the present invention, the local phase delay value of each layer of a multiple of layers using Jones matrix for a birefringent material having the multiple of layers where each layers optical axis is random based on a polarized signal detected in an optical detector may be calculated. According to the present invention, a skin aging level can be accurately examined by obtaining an accurate accumulated phase delay value for a multiple of layers of birefringent material having a random optical axis.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: November 17, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jun Lee, Jungho Chung
  • Patent number: 10838150
    Abstract: A coupling interface arrangement is described for a photonic integrated circuit (PIC) device. The PIC includes an interface coupling surface having optical grating elements arranged to form optical output locations that produce corresponding light output beams. A coupling lens couples the light output beams into a conjugate plane at a far-field scene characterized by one or more optical aberrations that degrade optical resolution of the light outputs. The optical grating elements are configured to correct for the one or more optical aberrations.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 17, 2020
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Michael G. Moebius, Steven J. Byrnes, Steven J. Spector, Francis J. Rogomentich, Matthew A. Sinclair