By Light Interference (e.g., Interferometer) Patents (Class 356/450)
  • Patent number: 10895674
    Abstract: A filtering device comprising first and second interference filters each comprising a Fabry-Perot cavity formed by semi-reflective layers between which a structured layer is arranged, wherein the structured layer belongs conjointly to the two filters, has a substantially constant thickness, is substantially planar and comprises two materials with different refractive indices arranged in each of the cavities, forming vertical structurings, the cavity of the second filter comprises a spacer arranged between one of the semi-reflective layers and the structured layer so that a distance between the semi-reflective layers of the cavity of the second filter is greater than a distance between the semi-reflective layers of the cavity of the first filter, and the filters comprise a second structured layer arranged in the cavities of the filters, and/or each filter comprises a second Fabry-Perot cavity comprising a third structured layer.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: January 19, 2021
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Laurent Frey, Bruno Mourey
  • Patent number: 10883824
    Abstract: Disclosed are a pattern light irradiating device and an inspection apparatus using the same. The pattern light irradiating device includes first and second pattern light sources installed on a frame having a plurality of through-holes. Each of the through-holes is formed along a single optical axis. The first pattern light source is configured to irradiate first pattern light having a fixed pitch. The second pattern light source is configured to irradiate second pattern light having a variable pitch.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: January 5, 2021
    Assignee: KOH YOUNG TECHNOLOGY INC.
    Inventors: Jung Hur, Woo Jae Choi
  • Patent number: 10883825
    Abstract: A determining method comprises a first computing step implemented by a computational module to compute a static pressure from an altitude determined by a geolocation module, a receiving step implemented by a reception module to receive a static pressure determined by a static pressure sensor, a second computing step implemented by a second computational module to compute a static pressure difference between the static pressure and the static pressure, a step of filtering the static pressure difference, a third computing step implemented by a third computational module in order to compute the backup altitude from the filtered static pressure difference and from the static pressure, and a sending step implemented by a sending module in order to deliver the computed backup altitude to a user device.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: January 5, 2021
    Assignee: AIRBUS OPERATIONS SAS
    Inventors: Martin Delporte, Guillaume Alcalay
  • Patent number: 10879667
    Abstract: A laser source for emitting a group of pulses, includes a primary laser source suitable for emitting at least one primary laser pulse; at least one interferometer suitable for forming, from the primary laser pulse, a plurality of secondary laser pulses, each interferometer comprising at least one delay line allowing two secondary laser pulses to be temporally separated, by a delay comprised between 50 ps and 10 ns; and a single-mode amplifying optical fiber intended to receive the secondary laser pulses, in order to form as output a group of spatially superposed pulses.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: December 29, 2020
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, INSTITUT NATIONAL DES SCIENCES APPLIQUEES-ROUEN, UNIVERSITE DE ROUEN NORMANDIE
    Inventors: Ammar Hideur, Adil Haboucha, Arnaud Bultel, Said Idlahcen, Thomas Godin
  • Patent number: 10880497
    Abstract: An imaging system includes an infrared illuminator, an ultrasonic emitter, a reference wavefront generator, and an image pixel array. The infrared illuminator emits a general illumination emission into a three-dimensional diffuse medium, where a portion of the general illumination emission encounters a voxel within the diffuse medium. The ultrasonic emitter focuses an ultrasonic signal to the voxel to wavelength-shift the portion of the general illumination emission to generate a shifted infrared imaging signal. The reference wavefront generator generates an infrared reference wavefront having a same wavelength as the shifted infrared imaging signal. The image pixel array captures an infrared image of an interference between the shifted infrared imaging signal and the infrared reference wavefront.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: December 29, 2020
    Assignee: Open Water Internet Inc.
    Inventors: Edgar Emilio Morales Delgado, Caitlin Regan, Mary Lou Jepsen
  • Patent number: 10880015
    Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: December 29, 2020
    Assignee: INPHI CORPORATION
    Inventors: Benjamin P. Smith, Jamal Riani, Sudeep Bhoja, Arash Farhoodfar, Vipul Bhatt
  • Patent number: 10880014
    Abstract: Active relative intensity noise mitigation in nested interferometers using trans-impedance amplifiers is provided by splitting an optical carrier signal into a first version and a second version, wherein the first version is orthogonal to the second version; re-combining predefined portions of the first version and the second version to determine a noise level; modulating at least one of the first version and the second version based on the noise level to reduce the noise level; after modulating the at least one of the first version and the second version based on the noise level, encoding data onto at least one of the first version and the second version; and recombining the first version and the second version to transmit the data.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: December 29, 2020
    Assignee: Cisco Technology, Inc.
    Inventors: Sanjay Sunder, Romesh Kumar Nandwana, Craig S. Appel
  • Patent number: 10871592
    Abstract: An interrogation system may be coupled to a fiber-optic cable positioned in a wellbore to interrogate a plurality of optical sensors coupled to the fiber-optic cable. The interrogation system may include an optical frequency comb source having a plurality of narrowband optical carriers transmitting light to the plurality of optical sensors. Each of the plurality of optical sensors may include a pair of partial reflectors to reflect the light transmitted by the optical frequency comb to one or more optical receivers to receive the reflection signals In some aspects, the interrogation system may include a de-interleaver device for separating reflected light signals having adjacent wavelength into separate optical waveguides. In additional aspects, interrogation system may also include a data processing system having a processing device for performing interferometric measurements using the reflected light signals.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: December 22, 2020
    Assignee: Halliburton Energy Services Inc.
    Inventors: Andrew David Barfoot, Han-Sun Choi, Xinwei Lan
  • Patent number: 10838048
    Abstract: An apparatus has a beam steerable laser emitter and a detector array with array elements. Electronics selectively enable first array elements corresponding to expected return signal paths and disable second array elements corresponding to unexpected return signal paths.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: November 17, 2020
    Assignee: Quanergy Systems, Inc.
    Inventors: Ryan Field, Tomoyuki Izuhara, Louay Eldada
  • Patent number: 10824846
    Abstract: A sensing method for a nanostructure pixel sensor includes shining light from an incident angle onto a nanostructure pixel sensor; capturing an image of nanostructure pixels of the nanostructure pixel sensor; obtaining brightness values of the nanostructure pixels from the image; and determining a presence and/or amount of an analyte based on an image pattern. The nanostructure pixel sensor includes a plurality of the nanostructure pixels. Each of the nanostructure pixels includes periodic nanostructures. At least two nanostructure pixels have different periodic spacings, and the analyte is applied on the nanostructure pixel sensor before capturing the image.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: November 3, 2020
    Inventor: Bo Xiao
  • Patent number: 10809626
    Abstract: A vector partially coherent source (VPCS) generator includes a laser that emits coherent light; an interferometer consisting of polarizing beam splitters (PBSs) to split the laser light into its vertical and horizontal polarization components;] first and second spatial light modulators (SLMs) that respectively control the vertical and horizontal polarization components; and a control system communicatively coupled to the first and second SLMs to adjust beam shape and coherence without physically moving or removing optical elements in the interferometer.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: October 20, 2020
    Assignee: The United States of America as represented by the secretary of the Air Force
    Inventors: Milo W. Hyde, IV, Santasri R. Bose-Pillai
  • Patent number: 10790629
    Abstract: Methods and systems for monitoring a brush holder assembly and/or detecting wear of a brush in a brush holder assembly are disclosed. One method includes sending data from a plurality of remote monitoring locations to a central control unit, where the data may be evaluated in order to monitor states of brushes at a plurality of remote electrical facilities. For example, multiple images of a marker tracking longitudinal movement of the brush may be acquired. A comparison of the images, for example, a comparative imaging technique, such as pixel-by-pixel comparison, may then be performed in order to evaluate a condition of the brush, such as the wear rate, wear state, or life expectancy of the brush.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: September 29, 2020
    Assignee: CUTSFORTH, INC.
    Inventor: Robert S. Cutsforth
  • Patent number: 10790972
    Abstract: Secure, semi-classical authentication schemes are presented. An authentication token is generated by applying a pre-determined measurement to a plurality of random quantum states to obtain a sequence of classical measurement outcomes. The token is validated by receiving the classical measurement outcomes and verifying whether the sequence corresponds to a statistically plausible result for the pre-determined measurement of the plurality of quantum states.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: September 29, 2020
    Inventor: Adrian Kent
  • Patent number: 10782117
    Abstract: An optical coherence tomography (OCT) system comprises an interferometer configured to generate interference light based on interference between a reference beam and a sample beam with which a sample has been irradiated. A detector operates to detect intensities of the interference light and/or one or more interference patterns; a processor is configured measure a signal falloff of the intensity of the interference light and/or the one or more interference patterns; and an optical delay line configured to adjust an optical path difference according to the signal falloff so as not substantially introduce artifacts to an image of the sample. In one embodiment, the optical delay line includes a main reflector consisting of a mirror and a Faraday rotator; the Faraday rotator is placed between the n and n+1 coherence revival modes of the interferometer, where n is greater than or equal to 1.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: September 22, 2020
    Assignee: Canon U.S.A., Inc.
    Inventor: Badr Elmaanaoui
  • Patent number: 10760956
    Abstract: A wavefront control apparatus includes a detector configured to detect a signal generated from a medium onto which light is irradiated, and a controller configured to control a wavefront of the light based on an output of the detector. The controller performs first processing for forming a first wavefront of the light based on the signal generated from a first measurement position in the medium, and second processing for forming a second wavefront of the light based on the signal generated from a second measurement position different from the first measurement position in the medium onto which the light having the first wavefront is irradiated.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: September 1, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Takahiro Masumura
  • Patent number: 10760897
    Abstract: An optical sensor includes an optical fiber disposed in such a way that an end surface thereof is exposed in a distal end surface (10a) of a sensor head (10). The optical sensor includes: a first plate material (first metal plate) (20) in close parallel contact with the distal end surface of the sensor head, and in which a through-hole is formed in a position corresponding to the end surface of the optical fiber; and a second plate material (second metal plate) (30) disposed parallel to the first plate material (first metal plate) and toward the front thereof in a measuring direction, and in which a through-hole is formed at a point of intersection with a virtual straight line perpendicular to the end surface of the optical fiber. With this optical sensor, it is possible for clearance measurement to be performed even if the optical fiber becomes opaque or worn.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: September 1, 2020
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Akio Kondou, Tomoyuki Onishi, Takahiro Miyamoto
  • Patent number: 10666872
    Abstract: Systems and methods disclosed herein include an imaging system that may include a laser diode source; an objective lens positioned to direct a focus tracking beam from the light source onto a location in a sample container and to receive the focus tracking beam reflected from the sample; and an image sensor that may include a plurality of pixel locations to receive focus tracking beam that is reflected off of the location in the sample container, where the reflected focus tracking beam may create a spot on the image sensor. Some examples may further include a laser diode light source that may be operated at a power level that is above a power level for operation at an Amplified Spontaneous Emission (“ASE”) mode, but below a power level for single mode operation.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: May 26, 2020
    Assignee: ILLUMINA, INC.
    Inventors: Danilo Condello, Simon Prince, David Hargis, Jeffrey Bendick, Christophe Sigel
  • Patent number: 10651619
    Abstract: The optical system comprises: means for introducing a controlled negative or positive chirp to an incoming ultrashort laser pulse to be characterized; a nonlinear optical medium through which said chirped ultrashort laser pulse is propagated, wherein as a result of said propagation: different chirp values are introduced in the ultrashort laser pulse at different propagation distances along the nonlinear optical medium, and a transverse nonlinear signal is generated in a direction perpendicular to the propagation axis; analyzing means configured for recording a single-shot spectral image of said generated transverse nonlinear signal; and a processing module comprising one or more processors configured to execute a numerical iterative algorithm to said single-shot spectral image to retrieve the electric field, amplitude and phase, of the ultrashort laser pulse.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: May 12, 2020
    Inventors: Jose Francisco Trull-Silvestre, Crina Maria Cojocaru, Inigo Juan Sola-Larranaga, Rosa Maria Romero-Muniz, Francisco Jose Maia Da Silva, Helder Manuel Paiva Rebelo Cerejo Crespo
  • Patent number: 10646874
    Abstract: Instrument for performing a diagnostic test on a fluidic cartridge A cartridge reader is for carrying out a diagnostic test on a sample contained in a fluidic cartridge inserted into the reader. The fluidic cartridge comprises a fluidic layer comprising at least one sample processing region, at least one collapsible blister containing a liquid reagent, a pneumatic interface, an electrical interface and at least one mechanical valve. The reader comprises a housing; an upper clamp occupying a fixed position relative to the reader, and a lower clamp, movable relative to the first clamp, wherein the upper clamp and the lower clamp define a cartridge receiving region therebetween. The reader comprises a thermal module comprised in the lower clamp, wherein the thermal module comprises at least one thermal stack for heating the at least one sample processing region of the cartridge inserted into the reader.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: May 12, 2020
    Assignee: Binx Health Limited
    Inventors: Ben Arlett, Tom Edwards
  • Patent number: 10627522
    Abstract: The invention is directed to a device and method for conducting measurement of a Doppler shift caused by molecular and aerosol movement while simultaneously providing measurement of temperature using LIDAR. The device incorporates a light source; and a Fabry-Perot etalon having a resonant cavity formed with two plane parallel reflecting surfaces, wherein the light source is positioned relative to the a Fabry-Perot etalon such that light is injected into a plane parallel resonant cavity of the Fabry-Perot etalon at an angle of incidence other than normal to the reflecting surfaces. The Fabry-Perot etalon may be formed with each of the parallel reflecting surfaces having different reflectivities. The light source may be positioned to direct the light to bypass a first reflective surface of the plane parallel resonator cavity, and/or implemented using a divergent light source.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: April 21, 2020
    Assignee: Michigan Aerospace Corporation
    Inventors: Paul Byron Hays, Scott K. Lindemann
  • Patent number: 10602132
    Abstract: A display apparatus including at least one light source per eye; at least one controllable scanning mirror per eye; means for detecting gaze direction of user; and a processor communicably coupled to the aforementioned components. The processor is configured to (a) obtain an input image and determine region of visual accuracy thereof; (b) generate pixel data corresponding to at least a first region and a second region of the input image, wherein the second region substantially corresponds to the region of visual accuracy of the input image, while the first region substantially corresponds to a remaining region of the input image, wherein the first region have a first resolution, while the second region have a second resolution, the second resolution being higher than the first resolution; and (c) control the at least one light source and the at least one controllable scanning mirror to draw the aforementioned regions.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: March 24, 2020
    Assignee: VARJO TECHNOLOGIES OY
    Inventors: Ari Antti Erik Peuhkurinen, Oiva Arvo Oskari Sahlsten, Klaus Mikael Melakari
  • Patent number: 10601518
    Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: March 24, 2020
    Assignee: INPHI CORPORATION
    Inventors: Benjamin P. Smith, Jamal Riani, Sudeep Bhoja, Arash Farhoodfar, Vipul Bhatt
  • Patent number: 10588512
    Abstract: An optical coherence tomography (OCT) system with dual optical coherence tomography probes is provided comprising: an optical scope comprising a distal end; a first OCT probe; and, a second OCT probe, each of the first OCT probe and the second OCT probe mechanically attached to the optical scope, the first OCT probe and the second OCT probe being substantially paraxial and configured to focus on a same scanning area, the optical scope configured to optically image the same scanning area using the distal end, the first OCT probe having a higher resolution than the second OCT probe.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: March 17, 2020
    Assignee: SYNAPTIVE MEDICAL (BARBADOS) INC.
    Inventors: Siu Wai Jacky Mak, Michael Frank Gunter Wood
  • Patent number: 10571612
    Abstract: A filtering device comprising first and second interference filters each comprising a Fabry-Perot cavity formed by semi-reflective layers between which a structured layer is arranged, wherein the structured layer belongs conjointly to the two filters, has a substantially constant thickness, is substantially planar and comprises two materials with different refractive indices arranged in each of the cavities, forming vertical structurings, the cavity of the second filter comprises a spacer arranged between one of the semi-reflective layers and the structured layer so that a distance between the semi-reflective layers of the cavity of the second filter is greater than a distance between the semi-reflective layers of the cavity of the first filter, and the filters comprise a second structured layer arranged in the cavities of the filters, and/or each filter comprises a second Fabry-Perot cavity comprising a third structured layer.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: February 25, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Laurent Frey, Bruno Mourey
  • Patent number: 10545091
    Abstract: The invention relates to a device for analyzing biological objects comprising a Raman spectroscopy system for capturing at least one Raman spectrum. The device comprises an arresting apparatus, which is designed to at least temporarily arrest the biological objects. An electronic computing apparatus is designed to determine a reaction of a biological object arrested by the arresting apparatus to at least one substance in accordance with an evaluation of the at least one Raman spectrum.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: January 28, 2020
    Assignee: CellTool GmbH
    Inventors: Karin Schütze, Raimund Schütze
  • Patent number: 10537235
    Abstract: A multimodal endoscope apparatus includes optical components (couplers, collimators, mirrors, beam splitters, filters and the like) structured to work together to interact with a multimodal endoscope probe to provide at least two imaging modalities selected from fluorescence imaging, optical coherence tomography, and photoacoustic imaging. The multimodal endoscope probe includes a fiber optic imaging bundle including a multitude of optical fibers. In embodiments employing photoacoustic imaging, the multimodal endoscope probe further includes a polymer-Fabry-Perot interferometer. In some embodiments, a galvo scanner and fiber collimator are included and are together capable of directing light to a single optical fiber of the multitude optical fibers. The system is modular in some embodiments, allowing for switching of some components.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: January 21, 2020
    Assignee: The University of Akron
    Inventor: Bing Yu
  • Patent number: 10529822
    Abstract: Semiconductor structures are provided. The semiconductor structure includes a substrate and a gate structure formed over the substrate. In addition, a sidewall of the gate structure has a top portion having a first inclination, a middle portion having a second inclination, and a bottom portion having a third inclination, and the first inclination, the second inclination, and the third inclination are different from one another.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: January 7, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Kai-Li Cheng, Che-Cheng Chang
  • Patent number: 10520436
    Abstract: An optical scanning system adapted to scan a sample on a chip is provided. The optical scanning system includes at least one optical scanning head, at least one scanning light source, a light receiving device and a processor. Each of at least one optical scanning head includes a focusing light source, a first optical guiding structure, and a control unit. The first optical guiding structure is configured to guide the focusing light emitted from the focusing light source to travel to the sample, and the first optical guiding structure is configured to guide the at least one scanning light emitted from the at least one scanning light source to the sample to generate a secondary light. The control unit is configured to control the first optical guiding structure to keep the focusing light and at least one scanning light focusing on a surface of the chip. The light receiving device receives the secondary light and generates a scanning electronic signal.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: December 31, 2019
    Assignee: Caduceus Biotechnology Inc.
    Inventors: Golden Tiao, Jung-Po Chen, Chien-Chung Pien, Tsung-Kai Chang, Feng-Hsiang Lo, Jean-Dow Lee, Jinn-Cherng Yang, Rung-Ywan Tsai
  • Patent number: 10495793
    Abstract: Image-sensing devices include odd-symmetry gratings that cast interference patterns over a photodetector array. Grating features offer considerable insensitivity to the wavelength of incident light, and also to the manufactured distance between the grating and the photodetector array. Photographs and other image information can be extracted from interference patterns captured by the photodetector array. Efficient extraction algorithms based on Fourier deconvolution introduce barrel distortion, which can be removed by resampling using correction functions.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: December 3, 2019
    Assignee: Rambus Inc.
    Inventor: Patrick R. Gill
  • Patent number: 10495440
    Abstract: Exemplary embodiments of the present disclosure include a combined catheter-based optical coherence tomography-two-photon luminescence (OCT-TPL) imaging system. Exemplary embodiments further include methods to detect, and further characterize the distribution of cellular components (e.g., macrophage, collagen/elastin fiber, lipid droplet) in thin-cap fibroatheromas with high spatial resolution in vivo.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: December 3, 2019
    Assignee: Research Development Foundation
    Inventors: Marc Feldman, Thomas Milner, Tianyi Wang, Jennifer Whedbee
  • Patent number: 10488252
    Abstract: A compact, portable Raman spectrometer makes fast, sensitive standoff measurements at little to no risk of eye injury or igniting the materials being probed. This spectrometer uses differential Raman spectroscopy and ambient light measurements to measure point-and-shoot Raman signatures of dark or highly fluorescent materials at distances of 1 cm to 10 m or more. It scans the Raman pump beam(s) across the sample to reduce the risk of unduly heating or igniting the sample. Beam scanning also transforms the spectrometer into an instrument with a lower effective safety classification, reducing the risk of eye injury. The spectrometer's long standoff range automatic focusing make it easier to identify chemicals through clear and translucent obstacles, such as flow tubes, windows, and containers. And the spectrometer's components are light and small enough to be packaged in a handheld housing or housing suitable for a small robot to carry.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: November 26, 2019
    Assignee: Pendar Technologies, LLC
    Inventors: Daryoosh Vakhshoori, Romain Blanchard, Peili Chen, Masud Azimi, Tobias Mansuripur, Kalyani Krishnamurthy, Arran M. Bibby, Fred R. Huettig, III, Gokhan Ulu, Greg Vander Rhodes
  • Patent number: 10490414
    Abstract: A photo-free lithography process with low cost, high throughput, and high reliability is provided. A template mask is bonded to a production workpiece and comprises a plurality of openings defining a pattern. An etch is performed into the production workpiece, through the plurality of openings, to transfer the pattern of the template mask to the production workpiece. The template mask is de-bonded from the production workpiece. A system for performing the photo-free lithography process is also provided.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: November 26, 2019
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Chue San Yoo
  • Patent number: 10459210
    Abstract: An optical arrangement for imaging a sample is disclosed. The optical arrangement comprises at least one first objective lens and at least one second objective lens, at least one illumination source for producing an illumination beam, detector for imaging radiation from the sample, and at least one mirror for reflecting the radiation from one of the first objective lens or the second objective lens into the detector. The at least one mirror is double-sided and dependent on the illumination beam at the other one of the first objective lens and the second objective lens.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: October 29, 2019
    Assignee: EUROPEAN MOLECULAR BIOLOGY LABORATORY
    Inventors: Gustavo Quintas Glasner de Medeiros, Lars Hufnagel, Nils Norlin
  • Patent number: 10462489
    Abstract: There are provided an image processing device and a processing method thereof. The image processing method includes obtaining an interference signal using a sample beam and a reference beam, transforming the interference signal by using a numerical signal processing method or an intensity mixing method to generate a transformed interference signal, and obtaining a three-dimensional (3D) phase image by using the interference signal and the transformed interference signal.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: October 29, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Gi Hyeon Min, Nack Woo Kim, Mun Seob Lee, Byung-Tak Lee, Young Sun Kim
  • Patent number: 10422625
    Abstract: A modular interferometric telescope including a base and an optical detector. A mounting beam has a first end, a second end, and a length, and is connected rotatably to the base at a point between the first and second end. The mounting beam is rotatable about a first axis extending in a direction of an object to be observed. A first light-collecting assembly is connected to the mounting beam proximal to the first end relative to the second end. The first light-collecting assembly directs light from the object to the optical detector. A second light-collecting assembly connected to the mounting beam is proximal to the second end relative to the first end. The second light-collecting assembly directs the light from the object to the optical detector. A first optical assembly is configured to receive the light from the object and direct the light to the optical detector.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: September 24, 2019
    Assignee: The Boeing Company
    Inventors: David Roderick Gerwe, Steven F. Griffin
  • Patent number: 10416428
    Abstract: An imaging system including a light source; a first focusing lens positioned to focus a beam from the light source to a beam waist at a predetermined location along an optical path of the beam in the imaging system; a beam splitter positioned relative to the first focusing lens to receive the beam from the first focusing lens and to create first and second beams; a second focusing lens positioned to receive the first and second beams output by the beam splitter, to focus the received first and second beams to a spot sized dimensioned to fall within a sample to be image, and further positioned to receive first and second beams reflected from the sample; an image sensor positioned to receive the light beams reflected from the sample; and a roof prism positioned in the optical path between the second focusing lens and the image sensor.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: September 17, 2019
    Assignee: ILLUMINA, INC.
    Inventors: Danilo Condello, Simon Prince, John O'Shaughnessy, Christophe Sigel, Ashkan Arianpour
  • Patent number: 10411810
    Abstract: A receiver architecture for physically-assisted computing of transforms, such as discrete Fourier transforms (DFT) and discrete Hilbert transforms (DHT), employs mutually-coherent optical frequency combs for detection of the coherent beating between an optical signal and a reference optical tone generated by a local oscillator (LO). A signal replication mixer generates a plurality of signal optical tones having a frequency pitch with an input signal mapped thereon. A reference mixer (local oscillator) generates a plurality of reference optical tones having an offset frequency pitch relative to the signal tones. A receiver backplane detects coherent beating between the signal optical tones and the reference optical tones. The input signal may be in the optical domain or in the radio-frequency domain.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: September 10, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Ping Piu Kuo, Stojan Radic
  • Patent number: 10379335
    Abstract: An illumination setting method includes acquiring an image of a sample onto which a light sheet has been radiated; determining, on the basis of the acquired image of the sample, a subordinate ray angle with respect to a width direction of the light sheet; and performing a setting of the illumination optical system according to the determined subordinate ray angle.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: August 13, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Yoshihito Iguchi
  • Patent number: 10365448
    Abstract: An optical module with a laser diode (LD) without any temperature control and an optical fiber that is coupled with the LD through the two lens system is disclosed. The two lens system first converts laser beam into collimated beam and second concentrates the collimated beam onto the optical fiber. A beam splitter is disposed between the lenses and splits the collimated beam toward a photodiode (PD). The PD, which receives the split collimated beam in a back surface thereof, provides an anti-reflection film in the back surface. The anti-reflection film eliminates multi reflections occurred within the PD.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: July 30, 2019
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yasushi Fujimura, Tomoya Saeki, Shunsuke Sato, Munetaka Kurokawa, Manabu Shiozaki
  • Patent number: 10359361
    Abstract: Laser speckle microrheology is used to determine a mechanical property of a biological tissue, namely, an elastic modulus. Speckle frames may be acquired by illuminating a coherent light and capturing back-scattered rays in parallel and cross-polarized states with respect to illumination. The speckle frames may be analyzed temporally to obtain diffuse reflectance profiles (DRPs) for the parallel-polarized and cross-polarized states. A scattering characteristic of particles in the biological tissue may be determined based on the DRPs, and a displacement characteristic may be determined based at least in part on a speckle intensity autocorrelation function and the scattering characteristic. A size characteristic of scattering particles may be determined based on the DRP for the parallel polarization state. The mechanical property may be calculated using the displacement and size characteristics.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: July 23, 2019
    Assignee: The General Hospital Corporation
    Inventors: Seemantini K. Nadkarni, Zeinab Hajjarian
  • Patent number: 10356313
    Abstract: Image-sensing devices include odd-symmetry gratings that cast interference patterns over a photodetector array. Grating features offer considerable insensitivity to the wavelength of incident light, and also to the manufactured distance between the grating and the photodetector array. Photographs and other image information can be extracted from interference patterns captured by the photodetector array. Efficient extraction algorithms based on Fourier deconvolution introduce barrel distortion, which can be removed by resampling using correction functions. The sensing devices can be made to minimize distortion that results from efficient extraction algorithms based on Fourier deconvolution.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: July 16, 2019
    Assignee: Rambus Inc.
    Inventor: Patrick R. Gill
  • Patent number: 10342491
    Abstract: Described herein are catheters for use with Optical Coherence Tomography (OCT) that include an optical fiber core having a first refractive index and an interface medium having a second refractive index, where the first and second refractive indexes are mismatched such that receiving electronics configured to receive optical radiation reflected from the reference interface and the target operate in a total noise range that is within 5 dB of the shot noise limit. These OCT catheters may include a silicon die mirror having a reflective coating that is embedded in the interface medium. The optical fiber can be fixed at just the distal end of the catheter, and may be managed within a handle that is attached to the proximal end of the catheter body, and is configured to allow rotation of the both catheter body and the optical fiber relative to the handle.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: July 9, 2019
    Assignee: Avinger, Inc.
    Inventors: John F. Black, Maegan K. Spencer, Michael Zung, Charles W. McNall, Evangeline Lumabas, Michael H. Rosenthal, John B. Simpson
  • Patent number: 10337911
    Abstract: The present invention is aimed at providing measurement method for vibration displacement using state variation principle which achieves real time implementation through super high-speed DSP or FPGA as well as improves precision as much as picometer level and at the same time saves memory capacity compared to conventional invention.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: July 2, 2019
    Assignee: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE
    Inventors: Wan Sup Cheung, Kyung Min Baik
  • Patent number: 10330459
    Abstract: A light pulse interferometer includes a first atom source and a first laser. The first atom source is configured to direct a first group of atoms in a first direction. The first laser is configured to generate one or more interferometer laser beam pairs. The one or more interferometer laser beam pairs interact with the first group of atoms in an interferometer sequence of three or more pulses to produce atom interference. A first laser beam pair of the one or more interferometer laser beam pairs is disposed to interact with the first group of atoms to perform 1D-cooling and velocity control of the first group of atoms prior to the interferometer sequence.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: June 25, 2019
    Assignee: AOSense, Inc.
    Inventors: Michael R. Matthews, Adam T. Black, Mark A. Kasevich, Micah Ledbetter
  • Patent number: 10325366
    Abstract: A method of evaluating a surgical margin of tumor tissues of a living subject includes acquiring images of a specimen of the tumor tissues; calculating a three-dimensional (3D) morphological surface of the specimen from the acquired images and displaying the 3D morphological surface; obtaining, from the 3D morphological surface, a plurality of specimen locations to cover a surface of the specimen; acquiring optical data at each specimen location; evaluating a margin status of the specimen at each specimen location to either positive or negative based on the acquired optical data; and displaying the margin status of the specimen on the 3D morphological surface of the specimen with morphological orientations.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: June 18, 2019
    Assignee: VANDERBILT UNIVERSITY
    Inventors: Anita Mahadevan-Jansen, The-Quyen Nguyen, Xiaohong Bi, Zain Gowani, Ginger Holt, Isaac Pence, John Nguyen
  • Patent number: 10317342
    Abstract: Novel and advantageous systems and methods for performing nanometer-scale microscopy using graphene plasmons (GPs) are provided. Sub-diffraction microscopy can be achieved, taking advantage of the extremely small plasmon wavelength and low dissipation of GPs. Nanometer-scale resolution can be obtained under very weak light intensity, which is especially important in the imaging of biological systems.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: June 11, 2019
    Assignees: The Texas A&M University System, The National Centre for Applied Physics, KACST
    Inventors: Muhammad Suhail Zubairy, Mohammad D. Al-Amri, Xiaodong Zeng
  • Patent number: 10299675
    Abstract: An image processing apparatus converts an intensity distribution of at least one of a plurality of regions of a tomographic image of an eye by using an amount of conversion which is greater than an amount of conversion used to convert an intensity distribution of another one of the plurality of regions, the tomographic image being obtained by performing tomographic imaging on the eye by using optical interference.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: May 28, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Uchida, Yukio Sakagawa, Krzysztof Piotrowski
  • Patent number: 10274528
    Abstract: The invention relates to methods and apparatus for determining properties of a surface.
    Type: Grant
    Filed: October 21, 2017
    Date of Patent: April 30, 2019
    Assignee: Malvern Panalytical Limited
    Inventors: Jason Corbett, Fraser McNeil-Watson, Robert Jack
  • Patent number: 10258238
    Abstract: Methods and apparatus for ascertaining a relative viscosity characterizing a fluid sample. The fluid sample is illuminated through a scattering membrane adjacent to the fluid with broadband radiation. Scattering from particles within the fluid sample characterized by a distribution of characteristic dimensions spanning at least two orders of magnitude is detected, generating a detector signal as a function of depth relative to a specified surface of the scattering membrane at a plurality of temporal delays. A cross-correlation function of at least one of amplitude, phase and intensity of a scattered optical field is derived for a plurality of depths relative to the specified surface. A mean cross-correlation function is then derived for each depth and fit to obtain a diffusion coefficient, from which a relative viscosity characterizing the fluid is derived.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: April 16, 2019
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Stephen A. Boppart, Guillermo Luciano Monroy, Paritosh Pande
  • Patent number: 10236994
    Abstract: A circuit and method for mitigating multi-path interference in direct detection optical systems is provided. Samples of an optical signal having a pulse amplitude modulated (PAM) E-field are processed by generating a PAM level for each sample. For each sample, the sample is subtracted from the respective PAM level to generate a corresponding error sample. The error samples are lowpass filtered to produce estimates of multi-path interference (MPI). For each sample, one of the estimates of MPI is combined with the sample to produce an interference-mitigated sample.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: March 19, 2019
    Assignee: INPHI CORPORATION
    Inventors: Benjamin P. Smith, Jamal Riani, Sudeep Bhoja, Arash Farhoodfar, Vipul Bhatt