Reflective-type Switch Patents (Class 385/18)
  • Patent number: 11169076
    Abstract: In one embodiment, a flow cytometer is disclosed having a compact light detection module. The compact light detection module includes an image array with a transparent block, a plurality of micro-mirrors in a row coupled to a first side of the transparent block, and a plurality of filters in a row coupled to a second side of the transparent block opposite the first side. Each of the plurality of filters reflects light to one of the plurality of micro-mirrors and passes light of a differing wavelength range and each of the plurality of micro-mirrors reflects light to one of the plurality of filters, such that incident light into the image array zigzags back and forth between consecutive filters of the plurality of filters and consecutive micro-mirrors of the plurality of micro-mirrors. A radius of curvature of each of the plurality of micro-mirrors images the fiber aperture onto the odd filters and collimates the light beam on the even filters.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: November 9, 2021
    Assignee: Cytek Biosciences, Inc.
    Inventors: Ming Yan, Yung-Chieh Hsieh, David Vrane, Eric Chase
  • Patent number: 11085995
    Abstract: An array of micro mirrors is used to beam steer a laser for Light Detection and Ranging (LiDAR) applications. The array of micro mirrors are driven in a nonlinear motion to synchronize motion of the micro mirrors in the array.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: August 10, 2021
    Assignee: Beijing Voyager Technology Co., Ltd.
    Inventors: Qin Zhou, Youmin Wang
  • Patent number: 11029243
    Abstract: In one embodiment, a flow cytometer is disclosed having a compact light detection module. The compact light detection module includes an image array with a transparent block, a plurality of micro-mirrors in a row coupled to a first side of the transparent block, and a plurality of filters in a row coupled to a second side of the transparent block opposite the first side. Each of the plurality of filters reflects light to one of the plurality of micro-mirrors and passes light of a differing wavelength range and each of the plurality of micro-mirrors reflects light to one of the plurality of filters, such that incident light into the image array zigzags back and forth between consecutive filters of the plurality of filters and consecutive micro-mirrors of the plurality of micro-mirrors. A radius of curvature of each of the plurality of micro-mirrors images the fiber aperture onto the odd filters and collimates the light beam on the even filters.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: June 8, 2021
    Assignee: Cytek Biosciences, Inc.
    Inventors: Ming Yan, Yung-Chieh Hsieh, David Vrane, Eric Chase
  • Patent number: 11022818
    Abstract: Ophthalmic devices including dynamic visual field modulation are disclosed herein. An example ophthalmic device may include a first liquid crystal cell including a first dichroic dye, a second liquid crystal cell including a second dichroic dye, wherein the first and second liquid crystal cells are in optical series so that incident light on the ophthalmic device passes through both the first and second liquid crystal cells, a photodetector positioned within the ophthalmic device to detect the incident light and coupled to output a data signal indicative of a property of the incident light, and control electronics coupled to receive the data signal from the photodetector in response to the incident light, and further coupled to independently and dynamically control the first and second liquid crystal cells based at least in part on the data signal.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: June 1, 2021
    Assignee: Verily Life Sciences LLC
    Inventors: Christian Gutierrez, Dmytro Reznikov, Joshua N. Haddock, Mimi Yang
  • Patent number: 10985859
    Abstract: An apparatus includes a first reconfigurable optical add/drop multiplexer (ROADM) to receive a first optical signal and a second ROADM to receive a second optical signal. The apparatus also includes a reconfigurable optical switch that includes a first switch, switchable between a first state and a second state, to transmit the first optical signal at the first state and block the first optical signal at the second state. The reconfigurable optical switch also includes a second switch, switchable between the first state and the second state, to transmit the second optical signal at the first state and block the second optical signal at the second state. The reconfigurable optical switch also includes an output port to transmit an output signal that is a sum of possible optical signals transmitted through the first switch and the second switch.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: April 20, 2021
    Assignee: Juniper Networks, Inc.
    Inventor: Kevan Peter Jones
  • Patent number: 10938541
    Abstract: A communication system includes a plurality of transmitters and a receiving unit. The transmitters are configured to divide signals to be emitted into K part signals and to emit the K part signals using K sub-carriers. K is an integer. The K sub-carriers are frequency bands having a sub-carrier bandwidth and are spaced in frequency. The receiving unit is configured to receive signals emitted by the transmitters. The invention further refers to a transmitter.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: March 2, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Frank Mayer, Rainer Wansch
  • Patent number: 10928586
    Abstract: A photonic neural component includes optical transmitters, optical receivers, inter-node waveguides formed on a board, transmitting waveguides configured to receive optical signals emitted from the optical transmitters and transmit the received optical signals to the inter-node waveguides, mirrors to partially reflect optical signals propagating on the inter-node waveguides, receiving waveguides configured to receive reflected optical signals produced by the mirrors and transmit the reflected optical signals to the optical receivers, and filters configured to apply weights to the reflected optical signals. The transmitting waveguides and receiving waveguides are formed on the board such that one of the transmitting waveguides and one of the receiving waveguides crosses one of the inter-node waveguides with a core of one of the crossing waveguides passing through a core or clad of the other.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: February 23, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jean Benoit Heroux, Seiji Takeda, Toshiyuki Yamane
  • Patent number: 10841671
    Abstract: A method and apparatus for operating an optical switching fabric or other optical device are provided. The device has multiple input and output ports to be selectably connected together via optical paths. For a requested configuration, an optical device configuration is determined based on a loss metric, which is based on one or both of: a number of crossings of the optical paths; and a length of the optical paths. The crossings can be waveguide crossings within the switching fabric. The configuration can be obtained by selecting particular intermediate stages of the switching fabric for carrying particular optical paths. The number of waveguide crossings, or the variation in the number of waveguide crossings, can be limited or minimized in the selected configuration. In one embodiment, an initial solution is determined, and the intermediate stages of the switch are re-ordered to obtain an improved solution in terms of the loss metric.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: November 17, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Hamid Mehrvar
  • Patent number: 10771056
    Abstract: A switch circuit and a high-speed multiplexer-demultiplexer are provided. The switch circuit includes an equalization module and an MOS transistor. A gate of the first MOS transistor is connected to an output terminal of the equalization module. An input terminal of the first MOS transistor is connected to a signal source. An output terminal of the first MOS transistor is connected to a subsequent circuit. The equalization module is configured to: supply a turning-on signal to the first MOS transistor in a case that an operation signal is acquired, to turn on the first MOS transistor; and generate a compensation signal for compensating an attenuation of the signal transmitted through the first MOS transistor, and apply the compensation signal to the gate of the first MOS transistor. The switch circuit operates in response to the operation signal.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: September 8, 2020
    Assignee: LONTIUM SEMICONDUCTOR CORPORATION
    Inventors: Cheng Tao, Hongfeng Xia, Yu Chen, Xiangyu Ji, Jiaxi Fu
  • Patent number: 10736513
    Abstract: The present invention provides imaging devices, systems, and methods of operation for acoustic-enhanced optical coherence tomography. The systems coordinate imaging devices, optical coherence tomography (OCT), and pulsed ultrasound (FUS) and or pulsed ultrasound (PUS) to enhance the contrast of images. Moreover, the systems improve in vivo diagnosis and drug release through the utilization of sonographic enhancers such as microbubbles (MBs).
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: August 11, 2020
    Assignee: CHANG GUNG UNIVERSITY
    Inventors: Hao-Li Liu, Meng-Tsan Tsai, Chih-Kuang Yeh
  • Patent number: 10690870
    Abstract: An optical communication subassembly includes one or more optoelectronic devices, one or more optical elements, and a transceiver light coupling unit. Each optical element is configured to change a divergence of the outgoing light relative to a divergence of the incoming light and is spaced apart from and optically aligned with a corresponding optoelectronic device. The transceiver light coupling unit has a mating surface configured for mating with a connector light coupling unit attached to an optical waveguide. A mating direction of the optical light coupling unit forms an angle with the mating surface of the transceiver light coupling unit such that when the connector light coupling unit mates with the transceiver light coupling unit, the angle between the mating direction of the connector light coupling unit and the mating surface of the transceiver light coupling unit causes the optical waveguide to bend.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: June 23, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Terry L. Smith, Barry J. Koch, Michael A. Haase, Alexander R. Mathews
  • Patent number: 10686288
    Abstract: A system and method for tuning and infrared source laser in the Mid-IR wavelength range. The system and method comprising, at least, a plurality of individually tunable emitters, each emitter emitting a beam having a unique wavelength, a grating, a mirror positioned after the grating to receive at least one refracted order of light of at least one beam and to redirect the beam back towards the grating, and a micro-electro-mechanical systems device containing a plurality of adjustable micro-mirrors.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: June 16, 2020
    Assignee: TERADIODE, INC.
    Inventors: Bien Chann, Robin Huang, Parviz Tayebati
  • Patent number: 10666375
    Abstract: A signal monitoring method and apparatus for a wavelength selective switch (WSS) are provided. The signal monitoring method for a wavelength selective switch WSS includes: encoding a phase of a first optical engine based on an input WDM signal, so that the WDM signal is split into a transmitted signal and a monitored signal after passing through the first optical engine; inputting the monitored signal to a second optical engine disposed at an output-side grating; and controlling the second optical engine to rotate in a wavelength plane of the WDM signal, so that monitored light of a specified wavelength in the monitored signal is output from the second optical engine at a preset angle.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: May 26, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Liangjia Zong, Han Zhao, Zhiyong Feng, Yunfei Yan
  • Patent number: 10649158
    Abstract: Embodiments of the invention include an optoelectronic package that allows for in situ alignment of optical fibers. In an embodiment, the optoelectronic package may include an organic substrate. Embodiments include a cavity formed into the organic substrate. Additionally, the optoelectronic package may include an actuator formed on the organic substrate that extends over the cavity. In one embodiment, the actuator may include a first electrode, a piezoelectric layer formed on the first electrode, and a second electrode formed on the piezoelectric layer. According to an additional embodiment of the invention, the actuator may include a first portion and a second portion. In order to allow for resistive heating and actuation driven by thermal expansion, a cross-sectional area of the first portion of the beam may be greater than a cross-sectional area of the second portion of the beam.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 12, 2020
    Assignee: Intel Corporation
    Inventors: Johanna M. Swan, Aleksandar Aleksov, Sasha N. Oster, Feras Eid, Baris Bicen, Thomas L. Sounart, Shawna M. Liff, Valluri R. Rao
  • Patent number: 10642027
    Abstract: An optical probe scanning assembly for use in an optical probe includes a mirror assembly that focuses an illumination beam path and a collection beam path at a region of interest within the sample. The illumination beam and the collection beam overlap to form a confocal beam region. The mirror assembly is movable in an x-axis direction and in a y-axis direction to scan the confocal beam region within the sample. The scanning assembly further includes a scanning suspension system including a gimbal assembly connected to the mirror assembly to allow the mirror assembly to rotate about one or more axes. The mirror is thereby adapted to scan along at least two different orthogonal planes, one of which extends vertically into the sample.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: May 5, 2020
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Thomas D. Wang, Haijun Li, Xiyu Duan, Zhen Qiu, Kenn Oldham
  • Patent number: 10605901
    Abstract: Beam steering devices and optical apparatuses including the beam steering devices are provided. A beam steering device includes a light source configured to generate input lights having first different wavelengths, a multiplexer configured to simultaneously receive the generated input lights, and multiplex the received input lights into a multiplexed light, and an optical splitter configured to split the multiplexed light. The beam steering device further includes an optical modulator configured to modulate the split light, and an emitter configured to simultaneously emit output lights having second different wavelengths to different points arranged in a first direction, based on the modulated light.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: March 31, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eunkyung Lee, Chilhee Chung, Jungwoo Kim, Dongjae Shin, Byounglyong Choi, Kyoungho Ha
  • Patent number: 10585240
    Abstract: A photonic neural component including optical transmitters, optical receivers, inter-node waveguides formed on a board, multiplexers configured to multiplex input optical signals onto the inter-node waveguides, transmitting waveguides configured to receive optical signals emitted from the optical transmitters and transmit the received optical signals to the inter-node waveguides via the multiplexers, mirrors to partially reflect optical signals propagating on the inter-node waveguides, receiving waveguides configured to receive reflected optical signals produced by the mirrors and transmit the reflected optical signals to the optical receivers, and filters configured to apply weights to the reflected optical signals. The transmitting waveguides and receiving waveguides are formed on the board such that one of the transmitting waveguides and one of the receiving waveguides crosses one of the inter-node waveguides with a core of one of the crossing waveguides passing through a core or clad of the other.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: March 10, 2020
    Assignee: International Business Machines Corporation
    Inventors: Jean Benoit Heroux, Seiji Takeda, Toshiyuki Yamane
  • Patent number: 10571693
    Abstract: Systems and methods are provided for selectively incoupling light having different wavelengths into one of a plurality of waveguides. The systems and methods provided for selectively incoupling light having different wavelengths into one of a plurality of waveguides comprise a switching device comprising switchable reflective elements that can be configured to redirect incoming light towards an incoupling element associated with one of a plurality of waveguides.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: February 25, 2020
    Assignee: Magic Leap, Inc.
    Inventors: David Tinch, William K. Jones
  • Patent number: 10560765
    Abstract: A Multi-Chip Module (MCM) includes a substrate and a switch controller on the substrate. An optical module on the substrate includes at least one optical crosspoint switch for selectively routing optical signals received by the optical module out of the MCM without the MCM buffering data from the optical signals or without converting the optical signals into electrical signals for processing data from the optical signals by the switch controller. According to another aspect, at least one memory on the substrate is connected to the switch controller by a parallel bus. In another aspect, the MCM includes a plurality of input optical paths for receiving optical signals from outside the MCM, a plurality of output optical paths for transmitting optical signals from the MCM, and a plurality of optical crosspoint switches each connecting an input optical path to an output optical path to selectively route optical signals.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: February 11, 2020
    Assignee: Western Digital Technologies, Inc.
    Inventor: Robert P. Ryan
  • Patent number: 10534137
    Abstract: Unlike most MEMS device configurations which simply switch between two positions in many optical devices the state of a MEMS mirror is important in all transition positions. It may determine the characteristics of an optical delay line system and by that an optical coherence tomography system in one application and in another the number of wavelength channels and the dynamic wavelength switching capabilities in the other. The role of the MEMS is essential and it is responsible for altering the paths of the different wavelengths in either device. It would be beneficial to improve the performance of such MEMS and thereby the performance of the optical components and optical systems they form part of. The inventors have established improvements to the design and implementation of such MEMS mirrors as well as optical waveguide technologies to in-plane optical processing as well as the mid infrared for optical spectroscopy.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: January 14, 2020
    Assignee: Transfert Plus Societe en Commandite
    Inventors: Michael Menard, Frederic Nabki, Mohamed Rahim, Jonathan Briere, Philippe-Olivier Beaulieu
  • Patent number: 10514498
    Abstract: A photonic neural component includes optical transmitters, optical receivers, inter-node waveguides formed on a board, transmitting waveguides configured to receive optical signals emitted from the optical transmitters and transmit the received optical signals to the inter-node waveguides, mirrors to partially reflect optical signals propagating on the inter-node waveguides, receiving waveguides configured to receive reflected optical signals produced by the mirrors and transmit the reflected optical signals to the optical receivers, and filters configured to apply weights to the reflected optical signals. The transmitting waveguides and receiving waveguides are formed on the board such that one of the transmitting waveguides and one of the receiving waveguides crosses one of the inter-node waveguides with a core of one of the crossing waveguides passing through a core or clad of the other.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: December 24, 2019
    Assignee: International Business Machines Corporation
    Inventors: Jean Benoit Heroux, Seiji Takeda, Toshiyuki Yamane
  • Patent number: 10481000
    Abstract: The invention relates to an apparatus and a method for evaluating spectral properties of a measurement object. It comprises a plurality of light emission units, each emitting light with a predetermined emission spectrum and having a respective output configured for emitting the light with the predetermined emission spectrum onto the measurement object, an optical spectrograph having an input port adapted to receive light from the measurement object and a diffraction unit adapted to distribute different wavelengths of the received light to different output ports comprising the optical detectors, wherein the diffraction unit is adapted to distribute said received light to the respective output ports such that the lights in the respective output port have different wavelengths at different diffraction orders; a signal identification unit adapted to identify which of the light emission units contribute to the respective light in the respective output ports.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: November 19, 2019
    Inventors: Reinhard März, Gustav Müller
  • Patent number: 10473920
    Abstract: Disclosed herein is a micro-electro mechanical (MEMS) device including a substrate, and a MEMS mirror stack on the substrate. A first bonding layer seals against ingress of environmental contaminants and mechanically anchors the MEMS mirror stack to the substrate. A cap layer is formed on the MEMS mirror stack. A second boding layer seals against ingress of environmental contaminants and mechanically anchors the cap layer to the MEMS mirror stack.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: November 12, 2019
    Assignee: STMicroelectronics S.r.l.
    Inventors: Giorgio Allegato, Sonia Costantini, Federico Vercesi, Roberto Carminati
  • Patent number: 10470304
    Abstract: An apparatus including a flexible substrate; and an overhanging electronic component island, the electronic component island configured to be less flexible than the flexible substrate and including one or more electronic components, wherein the electronic component island includes a substrate-face with a connection portion and an overhang portion, the connection portion being mechanically coupled to a surface of the flexible substrate via a single connection-support pad and the overhang portion configured to overhang and be substantially free of the underlying flexible substrate such that the underlying flexible substrate can be strained independently from the overhang portion under operational strains of the flexible substrate.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: November 5, 2019
    Assignee: Nokia Technologies Oy
    Inventors: Darryl Cotton, Mark Allen, Piers Andrew, Adam Robinson
  • Patent number: 10451798
    Abstract: A photonic neural component including optical transmitters, optical receivers, inter-node waveguides formed on a board, multiplexers configured to multiplex input optical signals onto the inter-node waveguides, transmitting waveguides configured to receive optical signals emitted from the optical transmitters and transmit the received optical signals to the inter-node waveguides via the multiplexers, mirrors to partially reflect optical signals propagating on the inter-node waveguides, receiving waveguides configured to receive reflected optical signals produced by the mirrors and transmit the reflected optical signals to the optical receivers, and filters configured to apply weights to the reflected optical signals. The transmitting waveguides and receiving waveguides are formed on the board such that one of the transmitting waveguides and one of the receiving waveguides crosses one of the inter-node waveguides with a core of one of the crossing waveguides passing through a core or clad of the other.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: October 22, 2019
    Assignee: International Business Machines Corporation
    Inventors: Jean Benoit Heroux, Seiji Takeda, Toshiyuki Yamane
  • Patent number: 10451876
    Abstract: A display device includes a two-dimensional array of tiles. Each tile includes a two-dimensional array of pixels and an electro-optic element of a two-dimensional array of electro-optic elements. The device includes one or more processors configured to: obtain an image of an object; activate at least a subset of the two-dimensional array of tiles for outputting a collective pattern of light that includes at least a portion of the image of the object; and activate at least a subset of the two-dimensional array of electro-optic elements for projecting the collective pattern of light. At least the subset of the two-dimensional array of electro-optic elements is configured to have a focal length, that is selected based on proximity of the object in a distance model, for projecting the collective pattern of light.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: October 22, 2019
    Assignee: Facebook Technologies, LLC
    Inventor: Mary Lou Jepsen
  • Patent number: 10429591
    Abstract: Integrated optical component combine the functions of a Variable Optical Attenuator (VOA), a tap coupler, and a photo-detector, reducing the size, cost, and complexity of these functions. In other embodiments, the integrated optical component combines the functions of an optical switch, a tap coupler, and a photo-detector. A rotatable mirror is used to adjust the coupling of light from an input port or ports to one or more output ports. A pin hole with a surrounding reflective surface is used at the core end face of one or more output fibers, such that a portion of the output optical signal is reflected to a photodiode chip. The photo-detector provides an indication of the optical power that is being coupled to the output fiber. With appropriate electronic control circuitry, the integrated optical component can be used to set the output optical power at a desired or required level.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: October 1, 2019
    Assignee: DICON FIBEROPTICS, INC.
    Inventors: Ho-Shang Lee, Brian Chiang
  • Patent number: 10394032
    Abstract: An optical system for transmitting a source image is provided. Light having a field angle spectrum emanates from the source image. The optical system includes an optical waveguide arrangement, in which light can propagate by total internal reflection. The optical system also includes a diffractive optical input coupling arrangement for coupling the light emanating from the source image into the optical waveguide arrangement. The optical system further includes a diffractive optical output coupling arrangement for coupling the light that has propagated in the optical waveguide arrangement out from the optical waveguide arrangement. The disclosure also provides related methods.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: August 27, 2019
    Assignee: Carl Zeiss AG
    Inventors: Wolfgang Singer, Bernd Kleemann, Artur Degen
  • Patent number: 10330922
    Abstract: In a biaxial optical deflector, multiple mirror units are arranged in an array. Each of the mirror units includes one mirror and one mirror driver coupled to said mirror for rocking the mirror.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: June 25, 2019
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Yoshiaki Yasuda
  • Patent number: 10313047
    Abstract: A method in an optical Wavelength Selective Switch, WSS, for multidirectional switching of optical signals. The optical WSS comprises a reflective element, a first tributary port and a second tributary port. The optical WSS switches (304) an optical signal between the first tributary port and the second tributary port with the reflective element.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: June 4, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Ahmad Rostami, Björn Skubic
  • Patent number: 10313643
    Abstract: An imaging system having four image sensors comprises a first dichroic filter, a second dichroic filter, and a third dichroic filter. The first dichroic filter reflects light having a first wavelength band and a second wavelength band toward a second dichroic filter, and transmits light having a third wavelength band and a fourth wavelength band toward the third dichroic filter. The second dichroic filter reflects light having the first wavelength band toward the first image sensor, and transmits light having the second wavelength band toward the second image sensor. The third dichroic filter reflects light having the third wavelength band toward the third image sensor, and transmits light having the fourth wavelength band toward the fourth image sensor. The first dichroic filter, the second dichroic filter, and the third dichroic filter are included in an integrated part.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: June 4, 2019
    Assignee: OmniVision Technologies, Inc.
    Inventor: Chun-Sheng Fan
  • Patent number: 10302862
    Abstract: A waveguide corner structure includes a plate on which mirrors are formed; and a waveguide member including waveguide cores and holes, each of the holes being drilled in a portion replacing an angular bent portion of corresponding waveguide cores. The plate is mounted on the waveguide member so that each of the mirrors is inserted in corresponding one of the holes for a change of a direction of a light beam at the portion of corresponding waveguide cores.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: May 28, 2019
    Assignee: International Business Machines Corporation
    Inventors: Jean Benoit Heroux, Hsiang Han Hsu
  • Patent number: 10297044
    Abstract: A method for calibrating an optical scanner device implemented by a calibration management apparatus, includes providing instructions to the optical scanner device to scan a calibration surface in a scan pattern based on one or more scan parameters, wherein the one or more scan parameters vary over the scan pattern. The scanning angle for each of the plurality of points in the scan pattern is computed based on an obtained image of a light source emitted from the optical scanner device at a scanning angle for a plurality of points in the scan pattern. A calibration relationship between the computed scanning angles and the corresponding scan parameters is determined for each of the plurality of points in the scan pattern.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: May 21, 2019
    Assignee: Adcole Corporation
    Inventors: James F. Munro, Xianping Zhang
  • Patent number: 10222548
    Abstract: A photonic neural component including optical transmitters, optical receivers, inter-node waveguides formed on a board, multiplexers configured to multiplex input optical signals onto the inter-node waveguides, transmitting waveguides configured to receive optical signals emitted from the optical transmitters and transmit the received optical signals to the inter-node waveguides via the multiplexers, mirrors to partially reflect optical signals propagating on the inter-node waveguides, receiving waveguides configured to receive reflected optical signals produced by the mirrors and transmit the reflected optical signals to the optical receivers, and filters configured to apply weights to the reflected optical signals. The transmitting waveguides and receiving waveguides are formed on the board such that one of the transmitting waveguides and one of the receiving waveguides crosses one of the inter-node waveguides with a core of one of the crossing waveguides passing through a core or clad of the other.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: March 5, 2019
    Assignee: International Business Machines Corporation
    Inventors: Jean Benoit Heroux, Seiji Takeda, Toshiyuki Yamane
  • Patent number: 10107959
    Abstract: A photonic neural component includes optical transmitters, optical receivers, inter-node waveguides formed on a board, transmitting waveguides configured to receive optical signals emitted from the optical transmitters and transmit the received optical signals to the inter-node waveguides, mirrors to partially reflect optical signals propagating on the inter-node waveguides, receiving waveguides configured to receive reflected optical signals produced by the mirrors and transmit the reflected optical signals to the optical receivers, and filters configured to apply weights to the reflected optical signals. The transmitting waveguides and receiving waveguides are formed on the board such that one of the transmitting waveguides and one of the receiving waveguides crosses one of the inter-node waveguides with a core of one of the crossing waveguides passing through a core or clad of the other.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: October 23, 2018
    Assignee: International Business Machines Corporation
    Inventors: Jean Benoit Heroux, Seiji Takeda, Toshiyuki Yamane
  • Patent number: 10088672
    Abstract: A mirror device includes a mirror, an actuator tilting the mirror, a first hinge coupling the mirror to the actuator, a base, a second hinge coupling the mirror to the base, a movable comb electrode coupled to the mirror, and a fixed comb electrode fixed to the base. The actuator is controlled based on a capacitance between the movable comb electrode and the fixed comb electrode. The movable comb electrode is disposed on a portion of the mirror closer to the second hinge than to the first hinge.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: October 2, 2018
    Assignee: SUMITOMO PRECISION PRODUCTS CO., LTD.
    Inventors: Osamu Torayashiki, Ryohei Uchino, Tokiko Misaki
  • Patent number: 10075220
    Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term evolution (LTE). The present disclosure relates to channel information feedback in a wireless communication system, and an operation method of a receiving node includes: determining compressed channel information based on an eigenvalue decomposition of a covariance matrix regarding a channel, and transmitting, to a transmitting node, a direction index and a magnitude index representing the compressed channel information. Herein, a dimension of the compressed channel information is lower than a dimension of channel information associated with the transmitting node. Also, the disclosure includes other embodiments, different from the above described embodiment.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: September 11, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Keonkook Lee, Lua Ngo, Byonghyo Shim, Byungju Lee, Taeyoung Kim, Jiyun Seol
  • Patent number: 10068733
    Abstract: A switching system includes a MEMS switching circuit having a MEMS switch and a driver circuit, and an auxiliary circuit coupled in parallel with the MEMS switching circuit that comprises solid state switching circuitry. A control circuit in communication with the MEMS switching circuit and the auxiliary circuit performs selective switching of a load current towards the MEMS switching circuitry and the auxiliary circuit, with the control circuit programmed to transmit a control signal to the driver circuit to cause the MEMS switch to actuate to an open or closed position across a switching interval, activate the auxiliary circuit during the switching interval when the MEMS switch is switching between the open and closed positions, and deactivate the auxiliary circuit upon reaching the open or closed position after completion of the switching interval, such that the load current selectively flows through the MEMS switch and the solid state switching circuitry.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: September 4, 2018
    Assignee: General Electric Company
    Inventors: Yanfei Liu, Glenn Scott Claydon, Christopher Fred Keimel, Christian Michael Giovanniello, Jr.
  • Patent number: 10031287
    Abstract: A photonic neural component including optical transmitters, optical receivers, inter-node waveguides formed on a board, multiplexers configured to multiplex input optical signals onto the inter-node waveguides, transmitting waveguides configured to receive optical signals emitted from the optical transmitters and transmit the received optical signals to the inter-node waveguides via the multiplexers, mirrors to partially reflect optical signals propagating on the inter-node waveguides, receiving waveguides configured to receive reflected optical signals produced by the mirrors and transmit the reflected optical signals to the optical receivers, and filters configured to apply weights to the reflected optical signals. The transmitting waveguides and receiving waveguides are formed on the board such that one of the transmitting waveguides and one of the receiving waveguides crosses one of the inter-node waveguides with a core of one of the crossing waveguides passing through a core or clad of the other.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: July 24, 2018
    Assignee: International Business Machines Corporation
    Inventors: Jean Benoit Heroux, Seiji Takeda, Toshiyuki Yamane
  • Patent number: 9977190
    Abstract: A wavelength selective switch (WSS) includes a liquid crystal on silicon (LCOS) panel and a fiber array with multiple ports. The two outermost ports of the multiple ports are a first port and a second port. An included angle between an intersecting line of the LCOS panel and a first plane in which the incident light entering the LCOS panel and emergent light exiting the LCOS panel are located, and incident light entering the LCOS panel is (90??) degrees, where a wavelength of the incident light is same as a wavelength of the emergent light, ? is less than 15 degrees, the first port and the included angle of (90??) degrees are located on a same side of the incident light, and the second port and the included angle of (90??) degrees are separately located on two sides of the incident light.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: May 22, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Liangjia Zong, Han Zhao
  • Patent number: 9941955
    Abstract: A method may include receiving, by a switching engine, an optical signal that includes a channel. The method may include applying, by the switching engine, a first beam steering grating to direct a first portion of the channel to a first output port. The method may include applying, by the switching engine, one or more second beam steering gratings to direct at least one of a second portion of the channel to a second output port, or a third portion of the channel to a photodetector. The third portion may be approximately less, in power, than 10 percent of the channel.
    Type: Grant
    Filed: April 24, 2016
    Date of Patent: April 10, 2018
    Assignee: Lumentum Operations LLC
    Inventors: Ian Breukelaar, Yi Liang, Shane H. Woodside, Barrie Keyworth, Wayne Bonnet, Peter David Roorda, Brandon C. Collings, Brian Smith
  • Patent number: 9885837
    Abstract: An optical device is equipped with an input/output module having at least one optical fiber, a movable mirror which deflects, toward the input/output module, light that is received from the input/output module, and a lens which couples the input/output module and the deflection unit to each other optically and has a focal length that is greater than or equal to 2.0 mm and shorter than 3.5 mm. A dispersion index ? of the optical device that is given by an equation: ?={n(1.45)?1}/{n(1.2)?n(1.7)} where n(1.45), n(1.2), and n(1.7) are refractive indices of a glass material of the lens at wavelengths 1.45 ?m, 1.2 ?m, and 1.7 ?m, respectively, is larger than or equal to 100. The wavelength dependence of an optical characteristic of this optical device is weaker than that of conventional optical devices.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: February 6, 2018
    Assignee: Sumitomo Electric Industries Ltd.
    Inventors: Hidehisa Tazawa, Kenichiro Takahashi
  • Patent number: 9869609
    Abstract: A vibration damping system comprises a vibration applying device mounted on a frame and a control device that controls the vibration applying device, the control device comprising a voltage command producing part that produces a driving voltage command to drive the vibration applying device and a vibration failure diagnosis part that diagnoses whether there is failure based on a vibration detection signal output by a vibration detecting device, wherein the voltage command producing part produces the driving voltage command corresponding to a diagnosis frequency that is previously set at a frequency identical to a resonance frequency of the frame or the vibration applying device or at a predetermined frequency close to the resonance frequency and makes the vibration applying device generate the vibration applying force according to the driving voltage command, and the vibration failure diagnosis part diagnoses whether there is failure based on the vibration detection signal.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: January 16, 2018
    Assignee: SINFONIA TECHNOLOGY CO., LTD.
    Inventors: Hideaki Moriya, Takenori Motoori, Tomohiro Okazaki
  • Patent number: 9865985
    Abstract: A system and method for tuning and infrared source laser in the Mid-IR wavelength range. The system and method comprising, at least, a plurality of individually tunable emitters, each emitter emitting a beam having a unique wavelength, a grating, a mirror positioned after the grating to receive at least one refracted order of light of at least one beam and to redirect the beam back towards the grating, and a micro-electro-mechanical systems device containing a plurality of adjustable micro-mirrors.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: January 9, 2018
    Assignee: TERADIODE, INC.
    Inventors: Bien Chann, Robin Huang, Parviz Tayebati
  • Patent number: 9816860
    Abstract: A spectrometer includes a light source that emits a beam into a sample volume comprising an absorbing medium. Thereafter, at least one detector detects at least a portion of the beam emitted by the light source. It is later determined, based on the detected at least a portion of the beam and by a controller, that a position and/or an angle of the beam should be changed. The beam emitted by the light source is then actively steered by an actuation element under control of the controller. In addition, a concentration of the absorbing media can be quantified or otherwise calculated (using the controller or optionally a different processor that can be local or remote). The actuation element(s) can be coupled to one or more of the light source, a detector or detectors, and a reflector or reflectors intermediate the light source and the detector(s).
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: November 14, 2017
    Assignee: SpectraSensors, Inc.
    Inventors: Alfred Feitisch, Xiang Liu, Keith Benjamin Helbley, Douglas Beyer
  • Patent number: 9764943
    Abstract: A MEMS structure includes a planar substrate, a support body coupled to the planar substrate, a fixed electrode coupled to the planar substrate and a moveable portion. The movable portion is spaced from and faces the fixed electrode. The movable electrode includes a movable weight and an intermediate frame surrounding an outer edge of the movable weight. A plurality of elastic supports connect the movable weight to the intermediate frame. The elastic supports are elastically deformable in a first direction extending parallel to the plane of the substrate such that the movable weight can move in the first direction. At least one torsion bar pivotally connects one end of the intermediate frame to the support body so as to allow the intermediate frame, and with it the movable weight, to pivot around an axis which extends parallel to the plane of the substrate and perpendicular to the first direction.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: September 19, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tsuyoshi Okami, Takashi Mizota, Yuki Ueya, Junya Matsuoka, Nobuaki Tsuji
  • Patent number: 9762325
    Abstract: An optical signal transmission apparatus (1) for a rotating antenna comprising a plurality of optical modulators (6) arranged for receiving a respective plurality of analog RF signals (5) and for modulating a respective plurality of optical signals therewith to produce a plurality of modulated analog optical signals (8). A plurality of opto-electrical converters (14) each converts a respective modulated analog optical signal (13) into an analog electrical signal. The plurality of optical modulators (6) are rotationally coupled in optical communication with the plurality of opto-electrical converters (14) via an optical rotary joint (10) including a reversion prism.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: September 12, 2017
    Assignee: BAE SYSTEMS plc
    Inventors: David John Aitken, Simon Charles Giles, Robert John Mark Longstone, Mohammed Nawaz, Andrew James Smith, Michael Andrew Scott
  • Patent number: 9739956
    Abstract: Provided is a variable optical attenuator, including a pigtail, a spacer, a lens and a cap. The pigtail has a first waveguide and a second waveguide. The first waveguide transmits incident light, and the second waveguide receives the returned light. The pigtail is attached to one side of the space, and the lens is attached to another side of the space. Moreover, the cap includes a hollow portion, a first connecting portion and a second connecting portion. The lens is placed inside the hollow portion, and the space is connected to the first connecting portion of the cap.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: August 22, 2017
    Assignee: BROWAVE CORPORATION
    Inventors: Jung-Tsung Chou, Kuo-Hsuan Hung, Yu-Wen Hwang
  • Patent number: 9690178
    Abstract: In a light emitting device, a second electrode is provided over a ridge portion having a constant width in a plan view, a second cladding layer includes an electrical connection region electrically connected to the second electrode, the active layer constitutes a light waveguide through which light is guided in a region overlapping the ridge portion in the plan view, the light waveguide is provided with a first light emission surface and a second light emission surface from which the light is emitted, and, in the plan view, a width of the electrical connection region at a central position equidistant from the first light emission surface and the second light emission surface is smaller than a width of an end of the electrical connection region in an extending direction of the light waveguide.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: June 27, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Hiroki Nishioka
  • Patent number: 9664896
    Abstract: A micro-electro-mechanical systems (MEMS) mirror array can include pre-tilted mirrors. In some implementations, a MEMS mirror array includes a set of first MEMS mirrors supported by a mounting surface of one or more first substrates, and a set of exterior MEMS mirrors supported by a mounting surface of one or more exterior substrates. The one or more exterior substrates can be disposed along at least one edge of an exterior perimeter of at least one of the first substrates. The mounting surface of the one or more exterior substrates can be arranged to cause a plane of each exterior MEMS mirror to be at a non-zero angle with respect to each first MEMS mirror. The one or more first substrates and the one or more exterior substrates can be supported by a common substrate.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: May 30, 2017
    Assignee: Google Inc.
    Inventor: Kevin Yasumura