Patents Issued in March 17, 2020
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Patent number: 10591632Abstract: Embodiments of the present invention may be generally related to methods, devices, and systems which measure a gravitational field. The methods and devices may utilize an interferometer to measure tilt of a pendulum, where the tilt of the pendulum is due to a gravitational force associated with a target object. In some embodiments, the interferometer may be a displaced, even parity, Sagnac interferometer. Additionally, the interferometer may be operated in the inverse weak value domain. In some embodiments, the pendulum and interferometric readout may measure relative gravitational fields that are transverse to Earth's gravitational field. In at least some embodiments, methods and devices may have shot noise limited sensitivity sufficient to detect one kilogram 25 meters away and may have a 1 nGal resolution after mere seconds of integration. Embodiments disclosed may be used to gravitationally map density fluctuations in a target object, including the human body.Type: GrantFiled: September 16, 2016Date of Patent: March 17, 2020Assignee: UNIVERSITY OF ROCHESTERInventors: John C. Howell, Christopher Mullarkey, Julian Martinez-Rincon
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Patent number: 10591633Abstract: Concepts and technologies for optical environmental filtering with intrusion protection are provided. In an embodiment, a system can include a first intrusion detection frame structure, a second intrusion detection frame structure, a controller unit, and a laser filter frame structure that is disposed between the first intrusion detection frame structure and the second intrusion detection frame structure. The laser filter frame structure can include at least one laser emitter that projects at least one laser beam that forms a laser emission plane between the first light intrusion plane and the second light intrusion plane. The controller unit can activate at least one laser emitter, and in response to detecting an object passing through the first light intrusion plane, deactivate a laser emitter to pause creation of the laser emission plane. The controller can reactivate a laser emitter before the object passes through the second light intrusion plane.Type: GrantFiled: December 22, 2017Date of Patent: March 17, 2020Assignee: AT&T Intellectual Property I, L.P.Inventors: Barrett Kreiner, Jonathan Reeves, Ryan Schaub
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Patent number: 10591634Abstract: A memristor element is used to create a spectrally programmable optical computing device for use in, for example, a downhole environment. An electromagnetic field is applied across the memristor element in order to alter its spectral properties. In turn, the spectral properties of sample-interacted light optically interacting with the memristor element are also altered. This alteration in spectral properties allows the memristor to be “programmed” to achieve a variety of transmission/reflection/absorption functions.Type: GrantFiled: April 23, 2015Date of Patent: March 17, 2020Assignee: HALLIBURTON ENERGY SERVICES, INC.Inventors: Samuel James Maguire-Boyle, Aditya B. Nayak
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Patent number: 10591635Abstract: An apparatus for communicating with a downhole tool includes a sensor body including at least two electrodes electrically insulated from one another and an external control device configured to engage the two electrodes. Detection circuitry connected to the two electrodes is configured to monitor an electrical status across the two electrodes, through the external control device, and upon detecting a change in electrical status that matches a predefined pattern, communicate a command to power management circuitry to alter a power status of the downhole tool.Type: GrantFiled: June 12, 2015Date of Patent: March 17, 2020Assignee: Well Resolutions TechnologyInventors: Lianhe Guo, Tsili Wang, Bruce Carter
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Patent number: 10591636Abstract: A method may include providing a drill string positioned in a wellbore including a measurement tool. The method may include taking a measurement with the measurement tool at a first location; coupling a pipe stand including a first selected number of tubular segments to the drill string, the first selected number being two or more; lowering or advancing the drill string into the wellbore the length of the pipe stand; taking a measurement with the measurement tool at a second location; raising the drill string the length of a tubular segment; removing a second selected number of tubular segments from the drill string; taking a measurement with the measurement tool at a third location; raising the drill string the length of the first selected number of tubular segments; removing the first selected number of tubular segments; and taking a measurement with the measurement tool at a fourth location.Type: GrantFiled: March 31, 2017Date of Patent: March 17, 2020Assignee: SCIENTIFIC DRILLING INTERNATIONAL, INC.Inventors: Marc Willerth, Benjamin C. Hawkinson, Brian D. Gleason
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Patent number: 10591637Abstract: A ball rotational direction detecting system includes a magnetic sensor that is fixed in a ball, an acceleration sensor, a bearing recording unit that records a moving bearing, a magnetic dip recording unit that records a magnetic dip ? of geomagnetism, and a calculating unit. The calculating unit calculates the orientation of the rotation axis and the rotational direction of the ball with respect to a traveling direction F and a gravity direction G of the ball, based on a geomagnetism vector m, an acceleration vector a, the moving bearing, the magnetic dip ?, and time variations in the geomagnetism vector m or the acceleration vector a.Type: GrantFiled: November 3, 2016Date of Patent: March 17, 2020Assignee: AICHI STEEL CORPORATIONInventor: Michiharu Yamamoto
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Patent number: 10591638Abstract: A method for efficient use of a computing system of parallel processors to perform inversion of geophysical data, or joint inversion of two or more data types. The method includes assigning at least one control processor to control sequence of operations and reduce load imbalance, assigning a group of one or more processors dedicated to updating one or more model parameters, and assigning another group of one or more processors dedicated to forward modeling simulated data.Type: GrantFiled: January 27, 2014Date of Patent: March 17, 2020Assignee: ExxonMobil Upstream Research CompanyInventors: Charlie Jing, Dennis E. Willen
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Patent number: 10591639Abstract: An example method includes providing source light to an optical fiber deployed in a downhole environment, receiving backscattered light from the optical fiber, and producing one or more optical interferometry signals from the backscattered light. The method also includes converting each of the one or more optical interferometry signals to an electrical signal and digitizing each electrical signal to obtain one or more digitized electrical signals. The method also includes deriving acoustic activity values as a function of time and position from the one or more digitized electrical signal. The method also includes applying at least some of the acoustic activity values to a flow prediction model to obtain a predicted fluid flow as a function of time, wherein the flow prediction model includes a proppant compensation value or factor. The method also includes storing or displaying the predicted fluid flow.Type: GrantFiled: October 17, 2014Date of Patent: March 17, 2020Assignee: Halliburton Energy Services, Inc.Inventors: Christopher Lee Stokely, Leonardo de Oliveira Nunes
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Patent number: 10591640Abstract: Described herein is a method of determining a mine worksite's terrain. The method may include determining positions of a surface of the worksite based on measurements relating to the worksite's terrain. At least some of the measurements may be received from a plurality of mobile machines on the worksite. The method may include transmitting a first subset of the determined positions to a first mobile machine on the worksite. A corresponding computing system and computer-readable medium for executing the method are also described.Type: GrantFiled: December 11, 2015Date of Patent: March 17, 2020Assignee: Caterpillar of Australia Pty, Ltd.Inventor: Darryl V. Collins
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Patent number: 10591641Abstract: A remote location monitoring system, for example, a home monitoring or weather monitoring system may include one or more sensors and/or receivers at a remote location such as a residence or business to be monitored. The sensors and receivers may communicate with a central server via a gateway device, and may be controlled by users locally or remotely via the server. Users may register to receive remote notifications of weather events and other home monitoring events. Users may also access remotely sensors and receivers to configure alerts, notifications, and automatic responses for the devices and integrated appliances at the remote location.Type: GrantFiled: October 29, 2018Date of Patent: March 17, 2020Assignee: La Crosse Technology Ltd.Inventors: Haupt Rolf, Allan McCormick
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Patent number: 10591642Abstract: A remote location monitoring system, for example, a home monitoring or weather monitoring system may include one or more sensors and/or receivers at a first location such as a residence or business to be monitored. The sensors and receivers may communicate with a remote central server via a gateway device and the detection data received from the sensors and receivers may be displayed via display circuitry coupled to a processor of the gateway device. The sensors, receivers, and gateway device may be controlled by users locally or remotely via the server. Users may register to receive remote notifications of weather events and other home monitoring events. Users may also access remotely sensors and receivers to configure alerts, notifications, and automatic responses for the devices and integrated appliances at the first location.Type: GrantFiled: January 22, 2019Date of Patent: March 17, 2020Assignee: La Crosse Technology Ltd.Inventors: Rolf Haupt, Allan McCormick
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Patent number: 10591643Abstract: Embodiments of 3D imaging systems that use a multifunctional, nano structured metalens to replace the conventional microlens array in light field imaging are disclosed. The optical focusing properties of the metalenses provided by gradient metasurface optical elements. The gradient metasurfaces allow the properties of the elements of the metalens array to be changed by tuning the gradient metasurfaces.Type: GrantFiled: November 21, 2016Date of Patent: March 17, 2020Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Dianmin Lin, Mark L. Brongersma, Pieter G. Kik, Gordon Wetzstein
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Patent number: 10591644Abstract: An optical laminate includes a translucent substrate, and at least one optical functional layer provided on the translucent substrate. The optical functional layer has a concave-convex shape on at least one surface. The optical functional layer contains two types of inorganic fine particles, and resin particles. The optical laminate has an internal haze X and a total haze Y satisfying (1) Y>X, (2) Y?X+25, (3) Y?50, and (4) 7?X?25. The optical laminate has a transmitted image clarity of 15% to 55% as measured using a 0.5-mm width optical comb. The number of projections having a height of not smaller than 0.1 ?m is not less than 900 per mm2 of measurement area in the concave-convex shape as measured by optical interferometry at an outermost surface of the optical functional layer.Type: GrantFiled: August 8, 2018Date of Patent: March 17, 2020Assignee: TOPPAN TOMOEGAWA OPTICAL FILMS CO., LTD.Inventors: Naoki Serizawa, Takayuki Nakanishi
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Patent number: 10591645Abstract: An electronic device may have transparent members such as display cover layers and camera windows. A transparent member such as a sapphire member may be provided with an antireflection coating. The antireflection coating may have a stack of dielectric thin-film interference filter layers that form a thin-film interference filter that suppresses visible light reflections. The stack of dielectric thin-film interference filter layers may have thicknesses and materials that provide the thin-film interference filter and coating with low light reflection properties while enhancing scratch resistance. An adhesion layer may be used to help adhere the stack of thin-film interference filter layer to the transparent member. An antismudge coating such as a fluoropolymer coating may be used to reduce smudging. Graded layers and layers with elevated hardness values may be used in the coating.Type: GrantFiled: April 11, 2017Date of Patent: March 17, 2020Assignee: Apple Inc.Inventors: Zhenbin Ge, Xianwei Zhao, Wookyung Bae, Sunggu Kang, Ligang Wang, Avery P. Yuen, Stephen C. Cool, John Z. Zhong
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Patent number: 10591646Abstract: An infrared anti-reflection film structure, an anti-reflection film layer, including a material of zinc oxide, comprising a top anti-reflection film layer and a bottom anti-reflection film layer, wherein the top anti-reflection film layer is disposed on a top side of the base material and the bottom anti-reflection film layer is disposed on a bottom side of the base material; and the base material is manufactured by a floating zone crystal growth method. Through the silicon base material manufactured by the high purity crystal growth method, the silicon base material replaces germanium as the high refractive index material and base material. And coating the anti-reflection film layer on the surface of the silicon base material, so as to apply the infrared anti-reflection film structure to the thermal imaging technology.Type: GrantFiled: December 20, 2017Date of Patent: March 17, 2020Assignee: National Chung-Shan Institute of Science and TechnologyInventors: Shih-Hao Chan, Shiang-Feng Tang, Shao-Ze Tseng, Kun-Chi Lo, Sheng-Hui Chen, Wen-Jen Lin
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Patent number: 10591647Abstract: A transparent resin is injection molded to create a marker (10) as an integrally molded article (lenticular lens portion (11)) including convex surfaces (112) and recesses (113) formed on the rear side of the convex surfaces. The recesses (113) are filled with coating films (115) formed by applying and curing a fluid coating material. Each recess (113) is arranged corresponding to a convex surface (112) so that the coating films (115) can be observed as optically distinguishable from the side of the convex surfaces (112).Type: GrantFiled: August 23, 2016Date of Patent: March 17, 2020Assignee: ENPLAS CORPORATIONInventors: Tomohiro Saito, Yuta Kawamoto, Yuya Oshima, Mitsuaki Shiota
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Patent number: 10591648Abstract: A camera and/or a method of manufacturing said camera configured for receiving a widescreen format image from an LED array camera having a reduced form factor. The camera has a generally circular LED array located around an image sensor and a generally polygonal lens covering the generally circular LED array. The outer edge of the generally polygonal lens has a length equal to or less than the outer diameter of the generally circular LED array.Type: GrantFiled: June 1, 2016Date of Patent: March 17, 2020Assignee: Arlo Technologies, Inc.Inventors: John Kui Yin Ramones, Henry Arthur Jupille
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Patent number: 10591649Abstract: A lens assembly according to an embodiment includes a holder including a first sidewall having a first opening and a second sidewall having a second opening, a liquid lens unit including at least a portion disposed in the first opening and the second opening, and an adhesive member coupling the holder and the liquid lens unit, wherein the second opening faces the first opening in a direction perpendicular to an optical-axis of the liquid lens unit.Type: GrantFiled: July 16, 2019Date of Patent: March 17, 2020Assignee: LG INNOTEK CO., LTD.Inventor: Yong Bok Choi
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Patent number: 10591650Abstract: A solar thermophotovoltaic system includes a heat exchange pipe containing a heat exchange fluid, and a thin-film integrated spectrally-selective plasmonic absorber emitter (ISSAE) in direct contact with an outer surface of the heat exchange pipe, the ISSAE including an ultra-thin non-shiny metal layer comprising a metal strongly absorbing in a solar spectral range and strongly reflective in an infrared spectral range, the metal layer having an inner surface in direct contact with an outer surface of the heat exchange pipe. The system further includes a photovoltaic cell support structure having an inner surface in a concentric configuration surrounding at least a portion of the ISSAE; and an airgap separating the support structure and the outer surface of the metal layer.Type: GrantFiled: January 16, 2019Date of Patent: March 17, 2020Assignee: IP EQUITY MANAGEMENT, LLCInventors: Gennady Shvets, Chih-Hui Wu
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Patent number: 10591651Abstract: The invention relates to electromagnetic radiation microoptical diffraction gratings and to a method suitable for the manufacture thereof. The diffraction gratings in accordance with the invention can be used as microspectrometers in the form of scanning microgratings. The microgratings are provided with a surface structure and are able to be manufactured cost effectively and in high volumes. The surface structure is formed at a surface of a substrate and is formed from linear structural elements arranged substantially equidistantly and aligned substantially parallel to one another. At least part of the surface of the substrate and of the structural elements is coated with at least one further layer which forms a uniform sinusoidal surface contoured in a wave-shape (sinusoidal) manner and having alternating arranged wave peaks and wave troughs. A reflective layer can additionally be applied to increase the intensity of reflected radiation.Type: GrantFiled: August 11, 2011Date of Patent: March 17, 2020Assignee: HIPERSCAN GMBHInventors: Fabian Zimmer, Alexander Wolter, Harald Schenk
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Patent number: 10591652Abstract: The present disclosure provides a coated glass or glass-ceramic substrate, wherein at least two coating layers are applied to each side of the substrate. Each of the coating layers comprises one or more metal oxides, and optionally a dopant. The dopant can be a halogen or post transition metal. The coated substrate can have two coating layers on each side, three coating layers on each side, or two coating layers on one side and three coating layers on the other side. The properties of each of the coating layers are adjusted so that the coated substrate can reflect infrared light in targeted wavelength ranges. The properties that can be adjusted include the number of coating layers, the coating layer thickness, the coating layer composition, the index of refraction of each coating layer, and the location of each coating layer according to their index of refraction.Type: GrantFiled: November 18, 2016Date of Patent: March 17, 2020Assignee: SCHOTT GEMTRON CORP.Inventor: Adam O' Ryan
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Patent number: 10591653Abstract: A composite stack may include a first substrate layer, a functional layer that includes silver, a first blocker layer that includes a corrosion resistant material and a second blocker layer that includes a blocker material selected from any one of Ti, Ni, Cr, Cu, Al, Mg, NiCr, or alloys thereof. The second blocker layer may be adjacent to the first blocker layer. The composite stack may further have a VLT of at least about 50% and a TSER of at least about 30%. The composite stack may also or in the alternative have an emissivity of not greater than about 20%.Type: GrantFiled: February 2, 2017Date of Patent: March 17, 2020Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATIONInventor: Noémie Chocat
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Patent number: 10591654Abstract: The invention disclosed herein generally relates to wideband resonant polarizers that require extremely small amounts of matter in their embodiments. These polarizers can be made with dielectric materials such that light and other electromagnetic waves interacting with them suffer essentially no absorptive loss. This new class of polarizers is fashioned with dielectric or semiconductor nano/microwire grids that are mostly empty space if surrounded by air or vacuum. It is fundamentally and practically extremely significant that the wideband spectral expressions presented herein can be generated in these minimal systems. These ultra-sparse polarizers are useful in various spectral regions for numerous useful applications.Type: GrantFiled: May 23, 2016Date of Patent: March 17, 2020Assignee: Board of Regents, The University of Texas SystemInventor: Robert Magnusson
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Patent number: 10591655Abstract: The present invention relates to an optical film including a polarizing film, and a manufacturing method therefor. The optical film of the present invention can include the polarizing film having an orthogonal transmittance of less than 0.5% in a wavelength of a range of 405-735 nm.Type: GrantFiled: May 13, 2015Date of Patent: March 17, 2020Assignee: Samsung SDI Co., Ltd.Inventors: A Ra Jo, Bae Wook Lee, Lee Hwa Song, Ki Ho Park, Boem Deok Lee
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Patent number: 10591656Abstract: A passive illuminator includes a luminescent region with a semiconductor material that absorbs first photons having energy greater than or equal to a threshold energy. In response to absorbing the first photons, the semiconductor material emits second photons, through a spontaneous emission process, having less energy than the first photons. A waveguide is optically coupled to the luminescent region to transport the second photons a distance from the luminescent region. An extraction region optically coupled to the waveguide to emit the second photons, and the waveguide is disposed between the extraction region and the luminescent region.Type: GrantFiled: March 31, 2016Date of Patent: March 17, 2020Assignee: X Development LLCInventors: Martin F. Schubert, Eric H. C. Liu
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Patent number: 10591657Abstract: An optical fiber laser module is provided with an optical fiber (2) for diffusing light, and a laser module housing (1) connected to the optical fiber. The laser module housing is provided with a laser light source (11) that outputs laser light to the optical fiber, and a light detector (14) that detects laser light that has been wave-guided through the full length of the optical fiber. The optical fiber is provided with: a light incident part (3a) provided inside the laser module housing, laser light from the laser light source being incident on the light incident part; and a terminal part (3) on which is formed a reflective film (4) that reflects the laser light that was incident on the light incident part and was wave-guided through the full length of the optical fiber so as to return the laser light to the light incident part.Type: GrantFiled: May 18, 2016Date of Patent: March 17, 2020Assignee: SHIMADZU CORPORATIONInventors: Kazutomo Kadokura, Mamoru Hisamitsu, Kazuya Inoue, Ryosuke Nishi
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Patent number: 10591658Abstract: In some embodiments, a display system is provided. The display system comprises a plurality of light pipes and a plurality of light sources configured to emit light into the light pipes. The display system also comprises a spatial light modulator configured to modulate light received from the light pipes to form images. The display system may also comprise one or more waveguides configured to receive modulated light from the spatial light modulator and to relay that light to a viewer.Type: GrantFiled: February 24, 2017Date of Patent: March 17, 2020Assignee: Magic Leap, Inc.Inventors: Kevin Curtis, Heidi Leising Hall, Pierre St. Hilaire, David Tinch
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Patent number: 10591659Abstract: A light guide plate, produced from material transparent to visible light, includes a plurality of prisms provided on one surface (a diffusion surface) thereof in a predetermined pattern. The plurality of prisms include a reflection surface that reflects visible light emitted from a light source and entering the light guide plate from an input surface toward another surface (an output surface). Each prism in the plurality of prisms is distributed so that the reflection surfaces of two prisms separated by a predetermined pitch are oriented in the same direction, and the reflections surfaces of two prisms that are closer than the predetermined pitch are oriented in mutually different directions.Type: GrantFiled: October 15, 2015Date of Patent: March 17, 2020Assignee: OMRON CorporationInventors: Junya Fujita, Yoshimasa Osumi, Yoshihiko Takagi, Yuji Hirose
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Patent number: 10591660Abstract: Wide-area solid-state illumination devices and systems employing a thin and flexible sheet of an optically transmissive material having at least one broad-area surface patterned with light scattering surface microstructures such as microdots of a non-absorbing UV curable ink. Light is input into the thin and flexible sheet using a number of compact solid-state light sources, such as LEDs, optically coupled to one or more edges or to one or two of the broad-area surfaces defining the thin and flexible sheet. Each surface microstructure forms a semi-opaque layer that extracts light from the thin and flexible sheet and causes light emission from both opposing broad-area surfaces of the sheet.Type: GrantFiled: September 8, 2018Date of Patent: March 17, 2020Assignee: SVV TECHNOLOGY INNOVATIONS, INC.Inventors: Sergiy Vasylyev, Mykola Masalitin
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Patent number: 10591661Abstract: Methods, systems, and products illuminate display devices. An image is injected into a waveguide. The image propagates at total internal reflectance within the waveguide. A frustrator withdraws a frustrated image from the waveguide, and the frustrated image may be displayed to a viewer.Type: GrantFiled: January 6, 2018Date of Patent: March 17, 2020Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.Inventor: Kevin A. Li
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Patent number: 10591662Abstract: To provide a planar light unit that optically and mechanically connects a light-emitting device and a light guide plate to each other in a stable manner so as to improve luminous efficiency and brightness uniformity on a light exit surface. A planar light unit 40 includes: a light guide plate 2, which includes a light incident portion 2f on a side edge of the light guide plate 2; a light-emitting device 3, which is configured to emit light into an inside of the light guide plate 2 through the light incident portion 2f; and a light source board 4, on which the light-emitting device 3 is mounted. The light incident portion 2f includes a recess 2a and a reflecting-shaped portion 2b. A flexible resin 6, which has a light-transmitting property and a flexibility, is disposed between a light incident surface 2c, which is formed on the recess 2a, and the light-emitting device 3.Type: GrantFiled: January 13, 2017Date of Patent: March 17, 2020Assignees: CITIZEN ELECTRONICS CO., LTD., CITIZEN WATCH CO., LTD.Inventors: Junji Miyashita, Tomoo Udagawa
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Patent number: 10591663Abstract: The present application relates to a light guide plate unit including a reflection plate, an adhesive layer which is provided on the reflection plate and includes a bead, and a light guide plate provided on the adhesive layer, a backlight unit including the light guide plate unit, and a liquid crystal display device including the backlight unit.Type: GrantFiled: April 13, 2017Date of Patent: March 17, 2020Assignee: LG CHEM, LTD.Inventors: Han Sol Yoo, Dong Ho Ko, Byeong In Ahn, Jae Ho Jung, Hyun Seong Ko, Sin Woo Kim
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Patent number: 10591665Abstract: A backlight module, including a light guide plate and a flexible circuit board, wherein an edge of the light guide plate is provided with plural light source mounting holes disposed along a thickness direction of the light guide plate; a light source is mounted in every light source mounting hole in such a manner that a light emitting surface of the light source is attached onto a hole wall of the light source mounting hole; plural groups of anode-cathode conductive parts are disposed on the flexible circuit board in one-to-one correspondence with the plural light source mounting holes, each being connected to an anode and a cathode of the light source in a corresponding light source mounting hole. The backlight module improves the brightness and uniformity of the light entering the light guide plate. A liquid display device including the above-mentioned backlight module is further provided.Type: GrantFiled: February 18, 2016Date of Patent: March 17, 2020Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE CHATANI ELECTRONICS CO., LTD.Inventors: Jinze Li, Zhendong Zhou, Tianlong Li, Hongqiang Chen, Shijia Jin, Yingli Meng, Dongsheng Yang
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Patent number: 10591666Abstract: According to one embodiment two-core optical fiber is provided for use in Brillouin distributed fiber sensor applications and systems. The two-core fiber includes a first and second core. Each core is configured to exhibit a Brillouin frequency shift greater than 30 Mhz relative to the other core. Further, each core possesses temperature and strain coefficients that differ from the other core. The cores can be configured to produce Brillouin frequency shift levels of at least 30 Mhz relative to one another. These differences in shift levels may be affected by adjustment of the material compositions, doping concentrations and/or refractive index profiles of each of the cores. These optical fibers may also be used in BOTDR- and BOTDA-based sensor systems and arrangements.Type: GrantFiled: December 12, 2016Date of Patent: March 17, 2020Assignee: Corning IncorporatedInventors: Brett Jason Hoover, Ming-Jun Li, Shenping Li
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Patent number: 10591667Abstract: A specialized, dispersion-controlled fiber is particularly configured to exhibit a relatively uniform dispersion (D) over a broad spectral range (for example, 1000 nm to 2000 nm). The specialized fiber exhibits an essentially constant attenuation (?) over this same spectral range so that the fiber is defined as having a high “figure of merit” (FoM) where FoM is defined as |D|/?. The specialized fiber is well-suited for use as a pulse stretcher, providing the ability to separate out wavelength constituents of an extremely short (fs, ps) broadband pulse into the ns range, for example.Type: GrantFiled: May 4, 2018Date of Patent: March 17, 2020Assignee: OFS FITEL, LLCInventors: Poul Kristensen, Philip G Westergaard
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Patent number: 10591668Abstract: An optical fiber includes (i) a chlorine doped silica based core having a core alpha (Core?)?4, a radius r1, and a maximum refractive index delta ?1 max% and (ii) a cladding surrounding the core. The cladding surrounding the core includes a) a first inner cladding region adjacent to and in contact with the core and having a refractive index delta ?2, a radius r2, and a minimum refractive index delta ?2 min such that ?2 min<?1 max, b) a second inner cladding adjacent to and in contact with the first inner cladding having a refractive index ?3, a radius r3, and a minimum refractive index delta ?3 min such that ?3 min<?2, and c) an outer cladding region surrounding the second inner cladding region and having a refractive index ?5, a radius rmax, and a minimum refractive index delta ?3 min such that ?3 min<?2.Type: GrantFiled: July 25, 2018Date of Patent: March 17, 2020Assignee: Corning IncorporatedInventors: Dana Craig Bookbinder, Ming-Jun Li, Snigdharaj Kumar Mishra, Pushkar Tandon
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Patent number: 10591669Abstract: A wave plate comprising: a prism member having an entrance surface for receiving a terahertz wave T, and an exit surface for emitting the terahertz wave T received by the entrance surface; wherein the prism member is constituted by a plurality of waveguide regions having: a partial entrance surface for receiving a part of the terahertz wave T, a plurality of total reflection surfaces for totally reflecting the terahertz wave T from the partial entrance surface, and a partial exit surface for emitting the terahertz wave T totally reflected from the total reflection surfaces; and each of the partial entrance surfaces combine to constitute the entrance surface of the prism member, and each of the partial exit surfaces combine to constitute the exit surface of the prism member, by stacking waveguide regions.Type: GrantFiled: May 20, 2014Date of Patent: March 17, 2020Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Yoichi Kawada, Takashi Yasuda, Atsushi Nakanishi
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Patent number: 10591670Abstract: In an optical waveguide element, an optical waveguide is formed on a substrate, the optical waveguide has a main waveguide that propagates signal light, a waveguide for unnecessary light that guides unnecessary light released from the main waveguide, and a waveguide for collecting unnecessary light to which the unnecessary light emitted from the waveguide for unnecessary light is introduced, the waveguide for unnecessary light is connected to the waveguide for collecting unnecessary light via a waveguide for connection, and a width of the waveguide for connection, which is a width in a direction that perpendicularly intersects a propagation direction of the unnecessary light, at a portion connected to the waveguide for collecting unnecessary light is set to be wider than a width at a portion connected to the waveguide for unnecessary light with the waveguide for connection.Type: GrantFiled: March 21, 2019Date of Patent: March 17, 2020Assignee: SUMITOMO OSAKA CEMENT CO., LTD.Inventors: Yu Kataoka, Norikazu Miyazaki
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Patent number: 10591671Abstract: Some embodiments of the present disclosure describe an apparatus for III/V-Si taper coupling, including a III/V-Si taper coupler with one end to receive a laser beam where the one end has at least one surface at a non-perpendicular angle with respect to a direction of the laser beam, and where the at least one surface forms one or more tips at the one end of the III/V-Si taper coupler. The one end is positioned so that the one or more tips are outside the laser beam to reduce reflection of laser beam away from the one end of the III/V-Si taper coupler.Type: GrantFiled: December 28, 2018Date of Patent: March 17, 2020Assignee: Intel CorporationInventors: Wenhua Lin, Kimchau N. Nguyen
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Patent number: 10591672Abstract: A photonic integrated circuit comprises an input interface adapted for receiving an optical input signal and splitting it into two distinct polarization modes and furthermore adapted for rotating the polarization of one of the modes for providing the splitted signals in a common polarization mode,. The PIC also comprises a combiner adapted for combining the first mode signal and the second mode signal into a combined signal and a decohering means adapted for transforming at least one of the first mode signal and the second mode signal such that the first mode signal and the second mode signal are received by the combiner in a mutually incoherent state. A processing component for receiving and processing said combined signal is also comprised.Type: GrantFiled: July 8, 2015Date of Patent: March 17, 2020Assignees: UNIVERSITEIT GENT, IMEC VZWInventors: Dries Van Thourhout, Andrea Trita
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Patent number: 10591673Abstract: An optical fiber cutting system includes: a pair of clamps disposed at an interval in a longitudinal direction of an optical fiber and that grips the optical fiber; a disk-shaped blade member including an outer peripheral edge portion, the blade member scratches the optical fiber by moving between the pair of clamps and by bringing the outer peripheral edge portion into contact with a surface of the optical fiber and changes a position of the outer peripheral edge portion where the outer peripheral edge portion is in contact with the optical fiber; a pressing member that cuts the optical fiber by pressing and bending a scratched portion on the optical fiber; and an sensor that acquires position information of the outer peripheral edge portion where the outer peripheral edge portion is in contact with the optical fiber.Type: GrantFiled: April 5, 2017Date of Patent: March 17, 2020Assignee: Fujikura Ltd.Inventor: Katsumi Sasaki
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Patent number: 10591674Abstract: A system for positioning an optical preform in a furnace is provided that includes an upper muffle and a downfeed handle assembly with a tube defining a first end and a second end, the second end extending into the upper muffle. A handle is disposed within the tube. A second end of the handle extends into the upper muffle and a seal assembly is positioned around both the tube and the handle. The first end of the handle extends through the seal assembly and a drive assembly is coupled with the downfeed handle.Type: GrantFiled: July 24, 2017Date of Patent: March 17, 2020Assignee: Corning IncorporatedInventors: Erling Richard Anderson, Kenneth William Roberts
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Patent number: 10591675Abstract: An optical space transmission system includes a first optical collimator configured to transmit collimated light and change a directivity of transmitted collimated light, a second optical collimator configured to receive collimated light and change a directivity of received collimated light, and a reflector that is fixed and arranged on an optical path through which the first optical collimator and the second optical collimator are optically connected to each other.Type: GrantFiled: March 5, 2018Date of Patent: March 17, 2020Assignee: NEC CORPORATIONInventor: Hiroshi Yamaguchi
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Patent number: 10591676Abstract: A micropositioner is provided. The micropositioner can include a suspension system with a support element that is connected to a base by first and second sets of flexures. The first and second sets of flexures permit movement of the support element within first and second dimensions respectively, while preventing movement of the support element in a third dimension that is orthogonal to the first and second dimensions. More particularly, the first set of flexures can include first and second flexures that are opposite one another and configured such that movement of the support element in the first dimension is allowed, but movement of the support element in the second and third dimensions is prevented. The second set of flexures can include third and fourth flexures that are opposite to one another and configured such that movement of the support element in the second dimension is allowed, but movement in the first and third dimensions is prevented.Type: GrantFiled: December 6, 2018Date of Patent: March 17, 2020Assignee: Ball Aerospace & Technologies Corp.Inventors: Miroslaw A. Ostaszewski, Robert W. Kaliski, Robert G. Marshalek
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Patent number: 10591677Abstract: A cover for a fiber optic cable connection includes a cap portion having a first housing portion having a first housing wall, a second housing portion having a second housing wall, and a coupler portion that couples the first housing portion and the second housing portion in a closed position. The first housing wall and the second housing wall define a housing opening. A sealing assembly is received within the housing opening and has an inner surface and an outer surface. The inner surface defines a sealing opening that receives a fiber optic cable. The outer surface contacts at least one of the first housing wall or the second housing wall when the sealing assembly is received within the housing opening. The sealing assembly creates an additional seal when the first housing wall and the second housing wall compress the sealing assembly onto a union portion.Type: GrantFiled: March 9, 2017Date of Patent: March 17, 2020Assignee: Preformed Line Products, Co.Inventors: Jonathon Randall Olszewski, John Lewis Hornsby, Benjamin Franklin Ciesielczyk
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Patent number: 10591678Abstract: An optical connector includes a first sub-assembly that is factory-installed to a first end of an optical fiber and a second sub-assembly that is field-installed to the first end of the optical fiber. The optical fiber and first sub-assembly can be routed through a structure (e.g., a building) prior to installation of the second sub-assembly. The second sub-assembly interlocks with the first sub-assembly to inhibit relative axial movement therebetween. Example first sub-assemblies include a ferrule, a hub, and a strain-relief sleeve that mount to an optical fiber. Example second sub-assemblies include a mounting block; and an outer connector housing forming a plug portion.Type: GrantFiled: February 18, 2019Date of Patent: March 17, 2020Assignee: CommScope Technologies LLCInventors: Julian S. Mullaney, Eric Emmanuel Alston, William Alan Carrico
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Patent number: 10591679Abstract: A multi-fiber connector (40) that promotes physical contact with a communicating multi-fiber connector. The multi-fiber connector (40) has a connector body (44) with a front end (47) and a back end (49). The multi-fiber connector (40) also includes a ferrule (10a, 10b) with optical contacts (20a, 20b) at a front end (14a, 14b). The ferrule (10a, 10b) is spring biased toward the front end (14a, 14b) of the connector body (44). The ferrule (10a, 10b) has a pair of alignment pin openings (30a, 30b) extending into the ferrule from a front end (14a, 14b). The ferrule (10b) also has a pair of alignment pins (22) mounted within the alignment pin openings (30a, 30b). The base ends of the alignment pins (22) have a different transverse cross-sectional shape than the alignment pin openings (30a, 30b). This difference in transverse cross-sectional shapes allows the alignment pins to pivot relative to the ferrule along a major axis of the ferrule.Type: GrantFiled: November 14, 2018Date of Patent: March 17, 2020Assignee: CommScope Asia Holdings B.V.Inventor: Jacob Arie Elenbaas
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Patent number: 10591680Abstract: Optical connector arrangements terminate at least seventy-two optical fibers. The optical connector arrangements include multiple optical ferrules that each terminates multiple optical fibers. Some example optical connectors can terminate about 144 optical fibers. Each optical connector includes a fiber take-up arrangement and a flange extending outwardly from a connector housing arrangement. The fiber take-up arrangement manages excess length of the optical fibers. A threadable coupling nut can be disposed on the connector housing arrangement to engage the outwardly extending flange. Certain types of optical connector arrangements include furcation cables spacing the connector housing arrangement form the fiber take-up arrangement.Type: GrantFiled: December 3, 2018Date of Patent: March 17, 2020Assignee: CommScope Technologies LLCInventors: Steven C. Zimmel, Yu Lu, Gregory J. Schaible
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Patent number: 10591681Abstract: The multichannel fiber optic connector, adapter, and contact retention method is disclosed. The connector includes a load carousel which enables handling, locating, retention, and, where needed, spring-loading of the plurality of single-fiber fiber optic ferrules supported within the connector, and the connector itself provides for independent axial and radial alignment of the fiber optic contacts. The adapter includes a plurality of optical alignment sleeves, and mating interfaces for two different connector types on differing sides of the adapter, wherein the fiber count of one connector type is an integral multiple of the fiber count of the other connector type, and wherein the contact pattern of the first connector type is repeated the same integral number of times within the contact pattern of the second connector type.Type: GrantFiled: July 13, 2017Date of Patent: March 17, 2020Assignee: Nest Technical Services, Inc.Inventors: Daniel Matthew Smith, William Medearis Smith
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Patent number: 10591682Abstract: Improved connector assemblies for use in communication systems and related methods for using the same are provided. The present disclosure provides advantageous connector assemblies (e.g., fiber optic cassettes) having a detachable front bezel that allows the connector assemblies to be assembled, terminated and/or mounted with respect to a panel member from the rear of the panel member, thereby providing user-friendly access for the splicing and management/storage of media cables (e.g., optical fiber cables). The present disclosure provides for a connector assembly having one or more locking members. Each locking member is configured to releasably secure the connector assembly to a bezel member mounted to a panel member. Exemplary panel member can include any suitable number or combination of connector assemblies releasably mounted with respect thereto, via a respective bezel member releasably mounted to the panel member.Type: GrantFiled: August 31, 2018Date of Patent: March 17, 2020Assignee: Ortronics, Inc.Inventor: Ryan J. Grandidge