Patents Issued in November 17, 2020
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Patent number: 10838085Abstract: Disclosed is a directional gamma ray or neutron detector system that locates a radioactive source both horizontally and vertically. In some embodiments, the system comprises four “side” detectors arrayed around a detector axis, and an orthogonal “front” detector mounted frontward of the side detectors. Embodiments can calculate the azimuthal angle of the source based on the detection rates of the side detectors, while the polar angle of the source may be calculated from the front detector rate using a predetermined angular correlation function, thereby localizing the source from a single data set without iterative rotations. In applications such as hand-held survey meters, walk-through portals, vehicle cargo inspection stations, and mobile area scanners, embodiments enable rapid detection and precise localization of clandestine nuclear and radiological weapons.Type: GrantFiled: March 26, 2020Date of Patent: November 17, 2020Inventor: David Edward Newman
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Patent number: 10838086Abstract: Disclosed herein is a radiation detector, comprising: a radiation absorption layer configured to absorb a radiation; a plurality of counters each associated with a bin and configured to register a number of particles of the radiation particles absorbed by the detector; a memory comprising a plurality of units, which can be dynamically allocated to the counters.Type: GrantFiled: November 9, 2018Date of Patent: November 17, 2020Assignee: SHENZHEN XPECTVISION TECHNOLOGY CO., LTD.Inventors: Peiyan Cao, Yurun Liu
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Patent number: 10838087Abstract: An apparatus and method are described which enable real time measurements to measure the margin to criticality in a process for manufacturing fissile materials. An exemplary apparatus includes a neutron source capable of being modulated, an optional moderator to reduce the thermal energy of neutrons from the neutron source, a collimator for controlling the direction of any neutrons emanating in use from the target, a plurality of detector arrays positioned in predetermined locations relative to a process vessel for detecting process variables and for sending signals representative of the process variables in real time to a processor for receiving the signals and converting the detected process variables into margin to criticality measurements.Type: GrantFiled: December 20, 2018Date of Patent: November 17, 2020Assignee: Westinghouse Electric Company LLCInventor: David L. Stucker
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Patent number: 10838088Abstract: An apparatus, device and method for measuring a gain of a sensor are disclosed. The apparatus comprises a current detection circuit (122) and a processing circuit (124). An input end of the current detection circuit (122) is used for connecting to an output end of a sensor unit (110). The current detection circuit (122) is used for detecting a current signal output by the sensor unit and generating a corresponding detection signal. An input end of the processing circuit (124) is connected to an output end of the current detection circuit (122). The processing circuit (124) is used for calculating energy of dark events occurring in the sensor unit (110) according to the detection signal, generating an energy spectrogram of the dark event, and calculating a gain of the sensor unit (110) based on the energy spectrogram.Type: GrantFiled: June 8, 2018Date of Patent: November 17, 2020Assignee: ZHONGPAI S&T (SHENZHEN) CO., LTDInventors: Jianfeng Xu, Zhixiang Zhao, Qiu Huang, Qiyu Peng
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Patent number: 10838089Abstract: An apparatus, device and method for measuring a breakdown voltage are disclosed. The apparatus comprises a controlled voltage source (122), a current detection circuit (124), and a processing circuit (126). The controlled voltage source (122) is used for providing a series of test bias voltages for the sensor unit (110). The current detection circuit (124) is used for detecting a current signal output by the sensor unit (110) and generating a corresponding detection signal. The processing circuit (126) is used for controlling the controlled voltage source (122) to provide a series of test bias voltages, calculating dark currents respectively corresponding to the series of test bias voltages on the basis of the detection signal, and determining a breakdown voltage of the sensor unit (110) on the basis of the series of test bias voltages and the dark currents.Type: GrantFiled: June 8, 2018Date of Patent: November 17, 2020Assignee: ZHONGPAI S&T (SHENZHEN) CO., LTDInventors: Jianfeng Xu, Zhixiang Zhao, Qiu Huang, Qiyu Peng
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Patent number: 10838090Abstract: A radiological evaluation device and a method of constructing a radiological evaluation device include a first high-Z material. A first test pattern is constructed by extruding a first high-Z material according to a first test pattern design file. The first high-Z material is combined with a second material to construct the first test pattern. The first high-Z material is radiologically distinct from the second material. A phantom body is constructed. The first test pattern is secured to the phantom body.Type: GrantFiled: August 10, 2018Date of Patent: November 17, 2020Assignee: Gammex, Inc.Inventor: Jason Holzmann
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Patent number: 10838091Abstract: A sensor device includes an elongated housing containing particle motion sensors spaced apart along a longitudinal axis of the elongated housing, where the elongated housing has a width. A second portion includes communication circuitry to communicate over a communication medium, the second portion coupled to the elongated housing and having a width that is greater than the width of the elongated housing. The second portion includes an impact surface that is above a top surface of the second portion, the impact surface to receive an impact force for deploying the sensor device into a ground surface. The second portion further includes a connector structure to mechanically connect the impact surface to the elongated housing.Type: GrantFiled: July 24, 2015Date of Patent: November 17, 2020Assignee: WesternGeco L.L.C.Inventor: Seth Ian Friedly
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Patent number: 10838092Abstract: A method, including: obtaining initial estimates of a plurality of subsurface parameters; obtaining a recorded wavefield decomposed into a plurality of discrete components; performing, with a computer, a cascaded inversion where the initial estimates of the subsurface parameters are individually updated, wherein each of the subsurface parameters are updated using a different discrete component of the recorded wavefield of the plurality of discrete components; and generating, with the computer, updated subsurface models from the cascaded inversion for each of the subsurface parameters.Type: GrantFiled: June 12, 2015Date of Patent: November 17, 2020Assignee: ExxonMobil Upstream Research CompanyInventors: Gboyega Ayeni, Partha S. Routh, John E. Anderson
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Patent number: 10838093Abstract: A method, including: storing, in a computer memory, seismic data acquired from a seismic survey of a subsurface region; and generating, with a computer, a final subsurface physical property model of the subsurface region by processing the seismic data with an iterative full wavefield inversion method, wherein the iterative full wavefield inversion method generates the final subsurface physical property model by iteratively applying a linear solver with a preconditioner that is generated from information from one or more previous iterations of the linear solver.Type: GrantFiled: June 23, 2016Date of Patent: November 17, 2020Assignee: ExxonMobil Upstream Research CompanyInventors: Volkan Akcelik, Huseyin Denli
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Patent number: 10838094Abstract: A method of identifying regions in a subsurface that may be a hydrocarbon reservoir, the method including: extracting features from cross-attribute clusters; assigning a distance metric and linkage criterion in feature space; calculating, with a computer, a degree of anomaly for the cross-attribute clusters in the feature space; ranking the cross-attribute clusters in accordance with the degree of anomaly; and prospecting for hydrocarbons by investigating a subsurface region in accordance with the rankings.Type: GrantFiled: January 30, 2018Date of Patent: November 17, 2020Assignee: ExxonMobil Upstream Research CompanyInventor: Matthew W. Harris
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Patent number: 10838095Abstract: Seismic data are acquired by actuating a first source at a first time and one or more additional seismic sources each with their own characteristic times with respect to a time of signal recording, the sources substantially collocated and at different depths. A first wavefield is determined that would occur if the first source were actuated at a selected time with respect to an initiation time of the recordings and being time adjusted for the water depth. One or more additional wavefields are determined that would occur if the one or more additional sources were each actuated at said selected time with respect to said initiation time, and being time adjusted for water depths of the one or more additional sources. The first wavefield and the one or more additional wavefields are combined to determine a deghosted source wavefield corresponding to actuation of a single seismic energy source.Type: GrantFiled: August 5, 2010Date of Patent: November 17, 2020Assignee: PGS GEOPHYSICAL ASInventors: Stian Hegna, Gregory Ernest Parkes
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Patent number: 10838096Abstract: Included are methods and apparatus for marine geophysical surveying. One embodiment of the presently-disclosed solution relates to a method for instantaneous roll compensation of vectorised motion data originating from a fixed-mount geophysical sensor during a marine seismic survey. A streamer is towed behind a survey vessel in a body of water. The streamer includes a plurality of geophysical sensors and a plurality of orientation sensor packages, and each orientation sensor package comprises a magnetometer. Vectorised geophysical data is acquired using the plurality of geophysical sensors, while orientation data is acquired by the plurality of orientation sensor packages. The orientation data is used to determine an instantaneous roll angle of the streamer at different positions on the streamer. The vectorised geophysical data is adjusted to compensate for the instantaneous roll angle of the streamer at different positions on the streamer. Other embodiments and features are also disclosed.Type: GrantFiled: December 1, 2017Date of Patent: November 17, 2020Assignee: PGS Geophysical ASInventor: Gustav Goran Mattias Sudow
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Patent number: 10838097Abstract: Methods and apparatus pertaining to determining shape and size of a borehole at a depth within a subterranean formation using ultrasonic measurements obtained by a downhole tool at four different azimuthal locations corresponding to four mutually orthogonal directions extending radially from a central axis of the downhole tool. The measurements are indicative of a distance between a wall of the borehole and the downhole tool at each azimuthal location. The borehole shape and size are determined by estimating an ellipse approximating the borehole shape and size using the ultrasonic measurements.Type: GrantFiled: May 4, 2018Date of Patent: November 17, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Hadrien Dollfus, Henri-Pierre Valero, Jean-Christophe Auchere
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Patent number: 10838098Abstract: A pill removal detection device for a blister package including a metallic element. Further, the pill removal detection device includes a detection means for detecting removal of a pill from the blister package. Yet further, the pill removal detection device includes an energy source, a sensor for detecting a change in capacitance of the metallic element of the blister package, means for communicating the detected change in capacitance to the detection means for waking up the detection means, and an attachment means for attaching the pill removal detection device to the blister package, the attachment means including an electrically conductive element connected to the sensor.Type: GrantFiled: November 21, 2018Date of Patent: November 17, 2020Assignee: Popit OyInventors: Timo Heikkilä, Marko Nirhola, Teemu Piirainen
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Patent number: 10838099Abstract: Disclosed in the present invention is a multi-mode data observation method based on unmanned aerial vehicle formation for semi-airborne electromagnetic surveying. The method includes four basic formation modes: a ZX formation mode for obtaining the Z component of the response field with a high signal-to-noise ratio and the X direction gradient data of the Z component of the response field in different scales; a ZZ formation mode for obtaining the Z direction gradient data of the Z component of the response field in different scales; an XX formation mode for obtaining the X component of the response field with a high signal-to-noise ratio and the X direction gradient data of the X component of the response field in different scales; an XZ formation mode for obtaining the Z direction gradient data of the X component of the response field in different scales.Type: GrantFiled: May 14, 2019Date of Patent: November 17, 2020Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Xin Wu, Guoqiang Xue, Qingyun Di
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Patent number: 10838100Abstract: Aspects of the disclosure may reduce motion noise by mounting vector component sensors on a bottom-weighted instrument platform that is supported with a spherical bearing. An apparatus for data acquisition is provided. The apparatus includes a base assembly, a spherical bearing mounted to the base assembly, and an instrument platform having at least one vector component sensor fixed thereto. The instrument platform is mounted on and supported by the spherical bearing. The spherical bearing couples the instrument platform to the base assembly and allows free angular rotation of the instrument platform, within a tilt angle range. The instrument platform is bottom weighted in that it has a center of mass disposed below its center of rotation. The apparatus may include a controller that receives and/or stores data from the at least one sensor.Type: GrantFiled: September 21, 2018Date of Patent: November 17, 2020Assignee: VALE S.A.Inventors: Benjamin David Polzer, Peter Whyte Walker, Gordon Fox West, Peter Anthony Hurley, Robert Leslie Scott Hogg
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Patent number: 10838101Abstract: An example method includes introducing a solution into at least part of a reservoir. The solution includes a contrast agent and a fluid. The contrast agent includes a polymer having a dielectric constant that may be greater than a predefined value. The example method also includes using at least one EM transmitter antenna to direct a first electromagnetic (EM) signal into the reservoir. The first EM signal passes through the at least part of the reservoir into which the solution was introduced. The first EM signal is received using at least one EM receiver antenna following passage through the at least part of the reservoir. Data is determined that represents a difference between a first travel time of the first EM signal transmitted through the contrast agent in the reservoir and a second travel time of a second EM signal transmitted through water-saturated reservoir rock. Information about a physical feature of the at least part of the reservoir is generated based on the data.Type: GrantFiled: May 23, 2018Date of Patent: November 17, 2020Assignee: Saudi Arabian Oil CompanyInventors: Erika Shoemaker Ellis, Howard Khan Schmidt, Jason Cox, Jesus Manuel Felix Servin
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Patent number: 10838102Abstract: Herein disclosed are methods and systems related to automatic pressure transient analysis (PTA). More particularly, herein disclosed are methods and systems related to automatic pressure transient analysis (PTA) of continuously measured pressure data associated with production or injection wells which utilizes in part pattern recognition analysis methods to determine key flow regimes in the measured data for more accurate determination of automatic pressure transient analysis (PTA) and determination of reservoir and well characteristic properties.Type: GrantFiled: August 15, 2017Date of Patent: November 17, 2020Assignee: ExxonMobil Upstream Research CompanyInventor: Satomi Suzuki
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Patent number: 10838103Abstract: A method for detecting an electrically conductive target in soil using a metal detector including the steps of: generating a transmit magnetic field for transmission into the soil based on the transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; determining a noise in the receive signal or a signal to noise ratio of the receive signal; and estimating, based on either the noise in the receive signal, or the signal to noise ratio of the received signal, or both, at least one effective detection depth of one or more types of electrically conductive targets in the soil.Type: GrantFiled: August 29, 2018Date of Patent: November 17, 2020Assignee: Minelab Electronics Pty. LimitedInventor: Ruifeng Huang
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Patent number: 10838104Abstract: Provided is an aircraft 10 which has been configured for conducting airborne gravimetry surveys, comprising a gravimeter 14, a global navigation satellite system (GNSS) receiver 18 arranged in signal communication with the gravimeter 14, as well as a Doppler lidar system 20 arranged in signal communication with the gravimeter 14. The lidar system 20 is configured to determine a vertical velocity of the aircraft 10 at a predetermined time, with a time signal from the GNSS receiver 18 used to operatively synchronise both the gravimeter 14 and lidar system 20 measurements. In this manner, a gravitational acceleration measurement of the gravimeter 14 is differentially isolable from a kinematic acceleration derivable from the synchronous lidar measurement.Type: GrantFiled: October 2, 2017Date of Patent: November 17, 2020Assignee: HZW Holdings Pty LtdInventor: Andrew Raymond Gabell
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Patent number: 10838105Abstract: A system for monitoring the movement of people through a passageway comprising two or more time of flight sensors deployed across the passageway in a direction substantially transverse to the direction of movement of a person or object through the passageway. The system further comprises means to determine data regarding people or objects passing through the passageway based on the time of flight of a signal measured by the two or more sensors.Type: GrantFiled: April 17, 2018Date of Patent: November 17, 2020Assignee: INTEGRATED DESIGN LIMITEDInventor: Derek Huff
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Patent number: 10838106Abstract: Known georeferencing techniques require input in the form of manually-chosen anchor points or dense surveyed data. The present invention is an improved method and system for georeferencing underground geometric data. The method comprises (a) visiting at least two control points; (b) obtaining information about each of the at least two control points using scanning means; (c) recording the information about the at least two control points into a computer processor; and (d) performing a best-fit transformation to the recorded information. Preferably, the scanning means comprises laser scanners and at least two radio-frequency identification (RFID) tags. However, other technologies, such as retro-reflective LIDAR targets, Wi-Fi access points or bar codes and a bar code reader may also be used. In addition, sonar, radar, flash LIDAR, MEMS LIDAR, or any other similar technology could be used.Type: GrantFiled: January 6, 2017Date of Patent: November 17, 2020Assignee: Peck Tech Consulting Ltd.Inventors: Sandy Wayne Pyke, Joshua Alexander Marshall, Nicholas James Lavigne, Unal Artan
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Patent number: 10838107Abstract: Techniques are disclosed relating to sensors configured to measure acceleration and pressure. In various embodiments, an apparatus includes a first hydrophone sensor having a first piezoelectric material and a first housing structure and a second hydrophone sensor having a second piezoelectric material and a second housing structure. In some embodiments, the apparatus includes a first pair of wires configured to provide a first differential voltage and a second pair of wires configured to provide a second differential voltage. The first pair of wires may be coupled to the first hydrophone sensor and the second pair of wires may be coupled to the second hydrophone sensor. In various embodiments, the apparatus is configured to determine, based on the first and second differential voltages, a pressure and an acceleration experienced by the first and second hydrophone sensors.Type: GrantFiled: April 24, 2018Date of Patent: November 17, 2020Assignee: PGS Geophysical ASInventors: Stig Rune Lennart Tenghamn, Frederick James Barr
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Patent number: 10838108Abstract: A method and system are described for creating a subsurface model. In this method, discontinuous functions are interpolated in a subsurface model. The method extrapolates specified values over discontinuous manifolds by embedding the manifold in a higher-dimensional space that amplifies distances across discontinuities and thus eliminates special consideration to prevent extrapolation across discontinuities. The resulting subsurface model may be used in reservoir simulations and hydrocarbon operations.Type: GrantFiled: December 15, 2017Date of Patent: November 17, 2020Assignee: ExxonMobil Upstream Research CompanyInventors: Matthias Imhof, Matthew S. Casey
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Patent number: 10838109Abstract: Currently available weather forecasts, which include a specific snowfall accumulation or range, do not convey the probability that snowfall will be within the forecasted snowfall accumulation range, probabilities of other snowfall accumulation amounts, or a forecaster's level of confidence. A snowfall probability distribution forecasting system is disclosed that uses a rules-based process to leverage third party weather forecasts, including members of ensemble forecasts, to generate snowfall probability distributions forecasting the most likely snowfall accumulation range, the probability that snowfall accumulation will be within the most likely snowfall accumulation range, and probabilities that snowfall accumulation will be outside of the most likely snowfall accumulation range. To ensure consistency with the deterministic forecast, the snowfall probability distribution may be shifted based on a deterministic forecast.Type: GrantFiled: March 30, 2018Date of Patent: November 17, 2020Assignee: AccuWeather, Inc.Inventors: Daniel DePodwin, Jonathan Porter, Michael R. Root
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Patent number: 10838110Abstract: Embodiments are disclosed for an optical waveguide display configured for use with a near-eye display (NED) device. In an embodiment the waveguide display includes a light-transmissive substrate and an optical coupling element configured to input light rays to the substrate or output light rays from the substrate, the optical coupling element configured to deflect a plurality of wavelengths of an incident light ray collinearly for propagation within the light-transmissive substrate through total internal reflection (TIR). The optical coupling element can include a pattern of nano-structures that collectively form a metasurface on the substrate.Type: GrantFiled: March 3, 2017Date of Patent: November 17, 2020Assignee: Microsoft Technology Licensing, LLCInventors: Eliezer Glik, Hagar Edelstain, Bernard C. Kress
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Patent number: 10838111Abstract: The present invention relates to an eyeglass lens comprising a substrate made of an optical material comprising a polymer matrix and at least one 2-(2-hydroxy-5-R1-phenyl)benzotriazole, in which R1 is a resonant group, the optical transmittance through a 2 mm thick layer of said optical material being lower than 1% for each light wavelength ranging from 280 to 405 nm. This eyeglass lens protects from phototoxic blue light and UV light.Type: GrantFiled: April 21, 2017Date of Patent: November 17, 2020Assignee: Essilor InternationalInventor: Pierre Fromentin
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Patent number: 10838112Abstract: A method for forming a light extraction layer including nanostructures, the method including: providing a substrate, the substrate being at least partially transparent to UV light; forming a non-aqueous precursor solution comprising fluorine and an alkaline earth metal to form alkaline earth metal difluoride particles; applying the precursor solution on at least a first side of the substrate; drying the substrate at a first temperature for a first period of time; and baking the substrate at a second temperature, higher than the first temperature, for a second period of time, thereby forming a light extraction nanostructure layer comprising alkaline earth metal difluoride nanostructures on the substrate. Also, a light extraction structure and to a UV lamp including such an extraction structure.Type: GrantFiled: May 22, 2017Date of Patent: November 17, 2020Assignee: Lightlab Sweden ABInventors: Jan-Otto Carlsson, Olesya Nikonova
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Patent number: 10838113Abstract: A display device includes a display panel which includes a bending area which is bendable and includes a curvature area in a bent state, a protective film by which a first groove is defined, where the first groove corresponds to the curvature area, and an adhesive member disposed between the protective film and the display panel. The protective film includes a first inner side surface and a second inner side surface that define the first groove, and the first inner side surface and the second inner side surface have inclined shapes.Type: GrantFiled: February 21, 2018Date of Patent: November 17, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seungwook Kwon, Ohjune Kwon, Hyojeong Kwon, Doohwan Kim, Minsang Kim
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Patent number: 10838114Abstract: The present disclosure relates to a polarizer protecting film, a polarizing plate including the same, a liquid crystal display including the polarizing plate, and a coating composition for polarizer protecting film. More specifically, it relates to a coating composition capable of producing a polarizer protecting film exhibiting excellent physical and optical characteristics while absorbing and emitting light in a specific wavelength range to enhance visibility of a laser pointer, a polarizer protecting film produced by using the same, a polarizing plate including the polarizer protecting film, and a liquid crystal display including the polarizing plate.Type: GrantFiled: December 26, 2017Date of Patent: November 17, 2020Assignee: LG Chem, Ltd.Inventors: Han Na Lee, Yeong Rae Chang
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Patent number: 10838115Abstract: The invention relates to an optical system (1) comprising: a first focus tunable lens (10), a curved image sensor (30) configured to receive light (L) focused by the first focus tunable lens (10); an optical path (P) extending through the first focus tunable lens and to the curved image sensor; wherein the optical system (1) is configured to tune the focal length of the first focus tunable lens (10) by applying an electrical signal to the first focus tunable lens (10) such that light (L) traversing said optical path (P) is focused onto the image sensor (30).Type: GrantFiled: January 4, 2017Date of Patent: November 17, 2020Assignee: OPTOTUNE AGInventor: Manuel Aschwanden
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Patent number: 10838116Abstract: A variable focus optical device (100) can include first optically transparent membrane (102) and a second membrane (104) that at least partially define a chamber (106) retaining an optically transparent liquid. A transparent piston (110) is attached to the second membrane (104). At least one actuator (112a-c) is operatively coupled to the transparent piston (110) and configured to move to change a focal length of the variable focus optical device (100) via actuation of the transparent piston (110). Three curved bimorph actuators (112a-c) can surround and be coupled to the piston (110) for actuation of the piston (110) to generate a plano-convex or plano-concave lens via the membranes (102, 104). A smart eyeglasses system includes a pair of variable focus optical devices (100), an object distance sensor, a battery, optional eye-tracking camera(s), and a microcontroller, collectively used for purposes of sensing distance of objects and adjusting said focal length via the variable focus optical devices (100).Type: GrantFiled: January 6, 2017Date of Patent: November 17, 2020Assignee: University of Utah Research FoundationInventors: Carlos Mastrangelo, Nazmul Hasan, Kim Hanseup
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Patent number: 10838117Abstract: A reflector for vehicles includes a reflective surface that contains an optical element to reflect light incident on the optical element according to specific reflection characteristics. The reflective surface is designed as a hologram element which has a grating structure in such a way that light incident on the hologram element is reflected according to the specific reflection characteristics.Type: GrantFiled: June 12, 2017Date of Patent: November 17, 2020Assignee: Hella KGaA Hueck & Co.Inventors: Carsten Hohmann, Martin Muegge
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Patent number: 10838118Abstract: A method, apparatus for making, and a retroreflective traffic sign consists of a polymeric film having a front face and a rear face, wherein the rear face has a pattern of microprismatic retroreflective elements integrally formed as part of said film; a pattern of cell walls formed of an adhesive-containing polymer defining cells in which the microprismatic retroreflective elements are in the cells; and a substrate is adhered directly to the cell walls formed of the adhesive-containing polymer while leaving an air gap between the microprismatic retroreflective elements and the substrate in the cells.Type: GrantFiled: June 12, 2018Date of Patent: November 17, 2020Inventor: Robert M. Pricone
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Patent number: 10838119Abstract: The present disclosure relates to an retroreflective structural colour film and a preparation method thereof. The main steps are as follows: (1) assembling colloidal microspheres to form a monolayer of microspheres; and (2) transferring the monolayer of microspheres onto a transparent substrate which has an adhesive layer to make the monolayer of microspheres partially embedded in the adhesive layer to prepare the retroreflective structural colour film. The retroreflective material has the advantages of the simple preparation process, high reflective brightness and uniformity of reflection colour. Moreover, the retroreflective material can exhibit unique retroreflective structural colour under the illumination of a white light source.Type: GrantFiled: October 30, 2018Date of Patent: November 17, 2020Assignee: Fudan UniversityInventors: Li-Min Wu, Jing Zeng, Wen Fan, Qiao-Qiang Gan, Deng-Xin Ji, Hao-Min Song
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Patent number: 10838120Abstract: A method of forming an article including a diffraction grating includes forming a periodic structure by printing lines on a first side of transparent substrate with a toner. The lines have a frequency and a spacing which causes incident light to be diffracted into a plurality of beams travelling in different directions. The method can be used for forming reflective or transmissive diffraction gratings using xerographic printing techniques.Type: GrantFiled: September 12, 2018Date of Patent: November 17, 2020Assignee: XEROX CORPORATIONInventor: Edward N. Chapman
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Patent number: 10838121Abstract: A three-dimensional diffraction grating is generated by selective deposition and/or selective etching. The three-dimensional diffraction grating includes a substrate and a plurality of structures located at different positions on the substrate. The structures have different materials. Edges of at least some of the structures are aligned. The three-dimensional diffraction grating includes different materials and aligned edges in all three dimensions. With the different materials and aligned edges, the three-dimensional diffraction gratings is configured to eliminate display artifacts, such as ghost, rainbow, etc.Type: GrantFiled: March 15, 2019Date of Patent: November 17, 2020Assignee: Facebook Technologies, LLCInventors: Nihar Ranjan Mohanty, Giuseppe Calafiore, Matthew E. Colburn, Austin Lane, Matthieu Charles Raoul Leibovici
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Patent number: 10838122Abstract: A color filter substrate and the fabricating method are provided. The color filter substrate comprises of the following elements. A glass substrate and a black matrix formed thereon. The black matrix includes a first ring protrusion on an edge thereof. Color resists, a planar layer and a photoresist spacer are disposed in sequence on the glass substrate. The planar layer includes a second ring protrusion formed thereon corresponding to a location of the first ring protrusion. A projection of the photoresist spacer on the glass substrate is inside the first ring protrusion and the second ring protrusion. A polyimide film is coated on the planar layer and the photoresist spacer. The second ring protrusions can block the backflow of the polyimide solution on the photoresist spacer, for reducing the halo area of polyimide film, increasing the open ratio of the panel and promoting the performance of the LTPS display.Type: GrantFiled: October 26, 2017Date of Patent: November 17, 2020Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Xiaojiang Yu
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Patent number: 10838123Abstract: Nanostructured photonic materials, and associated components for use in devices and systems operating at ultraviolet (UV), extreme ultraviolet (EUV), and/or soft Xray wavelengths are described. Such a material may be fabricated with nanoscale features tailored for a selected wavelength range, such as at particular UV, EUV, or soft Xray wavelengths or wavelength ranges. Such a material may be used to make components such as mirrors, lenses or other optics, panels, lightsources, masks, photoresists, or other components for use in applications such as lithography, wafer patterning, astronomical and space applications, biomedical applications, biotech or other applications.Type: GrantFiled: November 25, 2015Date of Patent: November 17, 2020Inventor: Supriya Jaiswal
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Patent number: 10838124Abstract: Nanostructured photonic materials and associated components for use in devices and systems operating at ultraviolet (UV), extreme ultraviolet (EUV), and/or soft Xray wavelengths are described. Such a material may be fabricated with nanoscale features tailored for a selected wavelength range, such as at particular UV, EUV, or soft Xray wavelengths or wavelength ranges. Such a material may be used to make components such as mirrors, lenses or other optics, panels, lightsources, masks, photoresists, or other components for use in applications such as lithography, wafer patterning, biomedical applications, or other applications.Type: GrantFiled: April 25, 2016Date of Patent: November 17, 2020Inventor: Supriya Jaiswal
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Patent number: 10838125Abstract: A wavelength tunable interference filter includes a fixed substrate, a fixed reflection film that is provided on the fixed substrate, reflects part of incident light, and transmits at least part of the incident light, a movable reflection film that faces the fixed reflection film, reflects part of incident light, and transmits at least part of the incident light, and a fixed electrode that surrounds the fixed reflection film and has a light absorbing layer and a metal layer, and the light absorbing layer is disposed closer to the fixed substrate than the metal layer.Type: GrantFiled: January 30, 2018Date of Patent: November 17, 2020Assignee: Seiko Epson CorporationInventor: Akira Sano
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Patent number: 10838126Abstract: An electronic device may be provided with one or more light-sensing components such as a camera and a color ambient light sensor. Optical structures such as camera lenses or a light pipe may be used to convey light from a window in an electronic device to a light-sensing component. One or more infrared-light-blocking-and-visible-light transmitting light filters may be interposed between a light-receiving window in an electronic device and a light-sensing component. The light filters may include infrared-light-blocking glass substrates, silver or other infrared-light-blocking thin films, and/or thin-film interference filters formed from stacks of dielectric layers that serve as infrared light-blocking layers.Type: GrantFiled: June 22, 2017Date of Patent: November 17, 2020Assignee: Apple Inc.Inventors: Ligang Wang, Zhang Jia, Serhan O. Isikman
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Patent number: 10838127Abstract: Polarizer stacks are described. More particularly, polarizer stacks that include an absorbing polarizer and multiple reflective polarizers, including at least one collimating reflective polarizer are described. Such polarizer stacks are capable of emitted light that is both collimated and color neutral. Backlights incorporating such polarizer stacks are also described.Type: GrantFiled: February 10, 2014Date of Patent: November 17, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Adam D. Haag, Timothy J. Nevitt, Michael F. Weber, Robert D. Taylor, Carl A. Stover
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Patent number: 10838128Abstract: A polarizing optical article formed by selectively applying a conductive coating to a portion of a structured surface formed of a series of linear peaks and valleys.Type: GrantFiled: October 12, 2018Date of Patent: November 17, 2020Assignee: Vision Ease, LPInventors: Richard Blacker, David Olund
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Patent number: 10838129Abstract: The present disclosure provides a system and method for an ultrathin optical metasurface with an array patterning formed on an optical fiber facet that enables manipulation of light passing therethrough, such as focusing and steering the light, and controlling a polarization state of light. The patterning can be non-uniform to selectively direct light passing through the metasurface. Array structures can vary in size, angle, shapes, and other non-uniform aspects. Further, the array can include materials that can be electrically activated and controlled to variably tune the metasurface characteristics for increased ability to manipulate the light passing therethrough. The materials can include a conductor, a dielectric, or a composite of a conductor, insulator, and dielectric formed on the optical fiber.Type: GrantFiled: June 18, 2019Date of Patent: November 17, 2020Assignee: Baylor UniversityInventors: Ho Wai Howard Lee, Jingyi Yang, Indra Ghimire
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Patent number: 10838130Abstract: A molded component assembly includes a printed circuit board with a first face and a second face, and multiple through apertures. Multiple light emitting diodes are mounted on a first portion of the first face. A light guide of a light translucent polymeric material is positioned proximate to the light emitting diodes. The light guide includes: a contact surface directly contacting the first portion of the first face; multiple light outlets, each aligned to receive visible light emitted from one of the light emitting diodes; and multiple integrally formed light reflectors. Each light reflector extends into one of the light outlets and over one of the through apertures, and each includes a first reflector surface, a second reflector surface and a third reflector surface each oriented non-orthogonal to the contact surface to reflect light from one of the light emitting diodes into one of the light outlets.Type: GrantFiled: August 22, 2018Date of Patent: November 17, 2020Inventors: Ron Gipson, Bhanumurthy Veeragandham
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Patent number: 10838131Abstract: Provided is an image display device including: liquid crystal cell; light guide plate that is disposed behind liquid crystal cell and is quadrilateral-shaped; light source that extends along at least one end face of light guide plate and emits light toward the at least one end face; reflective sheet that is disposed on a rear face of light guide plate and reflects, toward liquid crystal cell, the light emitted by light source; and a base plate that is disposed on a rear face of reflective sheet and supports reflective sheet, in which reflective sheet includes, at each of positions corresponding to both end portions of light source, protrusion that protrudes toward light source.Type: GrantFiled: July 20, 2018Date of Patent: November 17, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Akihiko Sasaki, Mitsuhiro Namikoshi, Kouji Terawaki, Aime Watanuki
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Patent number: 10838132Abstract: Techniques for eye-tracking in a near-eye display system are disclosed. One example of a near-eye display system includes a substrate transparent to visible light and configured to be placed in front of a user's eye, one or more light sources configured to emit illumination light invisible to the user's eye, one or more input couplers configured to couple the illumination light into the substrate, and one or more grating couplers each configured to couple a portion of the illumination light out of the substrate and towards the user's eye at a different direction. The illumination light coupled into the substrate propagates within the substrate through total internal reflection. The one or more grating couplers include at least one of a chirped surface-relief grating coupler or a volume Bragg grating coupler.Type: GrantFiled: August 21, 2018Date of Patent: November 17, 2020Assignee: FACEBOOK TECHNOLOGIES, LLCInventors: Giuseppe Calafiore, Hee Yoon Lee, Robin Sharma
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Patent number: 10838133Abstract: A screen with a transmissive image generator with pixels which is operable in at least two operating modes, B1 for a free viewing mode and B2 for a restricted viewing mode, and with an illuminating apparatus comprising a backlight that has a planar extension and radiates light in a restricted angular range, a plate-shaped light guide arranged in front of the backlight and provided with outcoupling elements on one of the large surfaces and/or within its volume, the light guide being transparent to at least 70% of the light emitted by the backlight; and light sources arranged laterally at edges of the light guide. In mode B2, the backlight is switched on and the light sources are switched off, and in mode B1 at least the light sources are switched on. In interaction with the transmissive image generator the illuminating apparatus constitutes an advantageous screen permitting the operating modes.Type: GrantFiled: June 2, 2020Date of Patent: November 17, 2020Assignee: siOPTICA GmbHInventors: André Heber, Uwe Schroeter, Juergen Schwarz, Ambrose Peter Nari, Markus Klippstein, Stepan Alkhimenko
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Patent number: 10838134Abstract: A multiview backlight and a multiview display employ multibeam elements configured to provide a plurality of light beams having different principal angular directions corresponding to different view directions of the multiview display. The display includes multiview pixels that include sub-pixels. A size of the multibeam element is comparable to a size of a sub-pixel in a multiview pixel of the multiview display.Type: GrantFiled: June 16, 2018Date of Patent: November 17, 2020Assignee: LEIA INC.Inventors: David A. Fattal, Ming Ma, Xuejian Li