Gas Patents (Class 356/437)
  • Patent number: 10782228
    Abstract: Systems and methods for measuring a value of constituents in a mixed constituent gas having at least one broad band absorber constituent therein and at least one lock constituent are provided. The system uses a combination of integrated cavity output spectroscopy and cavity ringdown spectroscopy to determine the measurement values of constituents in a cavity of a spectrometer. Cavity ringdown in the presence of the at least one broadband absorber constituent and a reference concentration value are used to determine the constituent measurement values when the spectral width of the laser tuning range is overlapped by the absorption band of the broad band absorber in the cavity.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: September 22, 2020
    Assignee: ABB Schweiz AB
    Inventors: J. Brian Leen, Axel Kramer, Xu Du
  • Patent number: 10775297
    Abstract: A system and method to discriminate between a first preselected gas and at least one other preselected gas use of an absorption spectroscopy analyzer that includes a Herriott cell and a temperature sensitive light source. The light source operates at a temperature that emits a beam at a wavelength that corresponds to high absorption by a first preselected gas. When a predetermined level of this gas is detected in a gas sample, the analyzer changes the operating temperature of the light source to emit a beam at a wavelength that corresponds to high absorption by a second preselected gas. The second preselected gas can be a different isotope of the first preselected gas.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: September 15, 2020
    Assignee: EcoTec Solutions, Inc.
    Inventor: Laurent Jourdainne
  • Patent number: 10765400
    Abstract: An embodiment of the invention provides a method including obtaining ultrasonic images of one or more vessel to be catheterized with an ultrasonic imaging device 212 and identifying the center(s) of the vessel(s) with the ultrasonic images. One of the vessels is punctured with a needle 220 based on the identifying of the center of the vessel. A guide wire 230 is inserted into the vessel and maneuvered with guide wire ultrasonic feedback control. The guide wire ultrasonic feedback control includes obtaining ultrasonic images of the vessel and the guide wire 230 in the vessel, and displaying the ultrasonic images of the vessel and the guide wire 230 in the vessel to a user. A catheter sheath 240 is inserted over the guide wire 230 and maneuvered with sheath ultrasonic feedback control. The guide wire 230 is removed and a catheter 250 is inserted into the catheter sheath 240 and maneuvered with catheter ultrasonic feedback control.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: September 8, 2020
    Assignee: The Government of the United States, as Represented by the Secretary of the Army
    Inventors: Lorne H. Blackbourne, Jose Salinas, Ronald D. Grisell
  • Patent number: 10769921
    Abstract: A smoke detector is provided and includes a housing defining a chamber receptive of ambient materials, one or more receivers disposed to receive light reflected from the chamber along one or more receiving axes, respectively, and multiple emitters disposed to emit light of multiple wavelengths, respectively, into the chamber at multiple angles relative to each of the one or more receiving axes, respectively, and a controller. The controller is configured to determine whether a current condition of the chamber should trigger an alarm based on output signals generated by the one or more receivers resulting from light emitted into the chamber by the multiple emitters being reflected toward the one or more receivers by the ambient materials.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: September 8, 2020
    Assignee: CARRIER CORPORATION
    Inventors: Vipul Patel, Dennis Michael Gadonniex
  • Patent number: 10758760
    Abstract: A method for the inerting of at least one fuel tank of an aircraft, by means of at least one inert gas generation system, remarkable in that the inert gas generation system is started when at least one oxygen sensor within the tank measures an oxygen level that is above a high threshold.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: September 1, 2020
    Assignee: Zodiac Aerotechnics
    Inventors: Nelly Giroud, Bruno Reynard, Olivier Vandroux, Emilie Mysliwiec
  • Patent number: 10761020
    Abstract: Spectroscopic apparatus and methods incorporating a gas sensor configured to detect low concentration gases, including gases that are hazardous volatiles are provided. Low concentration gases can comprise gases where detection of concentrations on the order of parts-per-million (ppm), and in many embodiments part-per-billion (ppb) is required. The gas may be a species, such as, for example hydrogen sulfide (H2S) that may be produced in drilling and/or volcanic eruptions. The spectroscopic apparatus and methods are configured to operate in particular atmospheres where gas detection can be challenging, such as in ambient air and/or in space where various contaminants may be present. The spectroscopic apparatus and methods may incorporate a long path length detector, such as, for example, a cavity-enhanced absorption spectrometer. The methods and apparatus further incorporate a wavelength modulation technique to improve the signal-to-noise ratio.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: September 1, 2020
    Assignee: California Institute of Technology
    Inventor: Ramabhadran Vasudev
  • Patent number: 10684217
    Abstract: The present invention provides a system for measuring concentrations of trace gases in gas mixtures using the absorption spectroscopy method. The system comprising an optical cell containing a gas mixture, a continuous-wave stepwise tunable external cavity laser, a detector system for measuring an absorption of laser light by the gas in the optical cell, and a processor to conduct an absorption spectroscopy analysis of the gas mixture based on light intensity measured by the detector system at one or more laser frequencies.
    Type: Grant
    Filed: June 29, 2019
    Date of Patent: June 16, 2020
    Inventor: Serguei Koulikov
  • Patent number: 10656131
    Abstract: Cavity enhanced absorption spectroscopy (CEAS) may include a pulsed light emitting diode (LED) configured to emit a light towards a photomultiplier tube (PMT). CEAS may also include a cell, which includes a pair of reflective mirrors located at opposite ends of the cell. The pair of mirrors are configured to bounce the light back and forth a plurality of times increasing the effective path length of the cell. The PMT is configured to detect the emitted light for ozone absorption measurement.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: May 19, 2020
    Assignee: United States of America as represented by the Administrator of NASA
    Inventors: Steven A. Bailey, Thomas Hanisco
  • Patent number: 10656080
    Abstract: A gas detection apparatus (100) includes a first layer (1) and a second layer (2) disposed opposite the first layer (1) in a predetermined direction (z-axis direction). The first layer (1) includes a light emitter that emits light and a light receiver that receives the light after the light passes through a waveguide. The second layer (2) includes a light input unit of the waveguide opposite the light emitter in the predetermined direction (z-axis direction) and a light output unit of the waveguide opposite the light receiver in the predetermined direction (z-axis direction). The gas detection apparatus (100) can be miniaturized.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: May 19, 2020
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Toshiaki Fukunaka, Edson Gomes Camargo
  • Patent number: 10648908
    Abstract: Various embodiments may provide an optical system for determining a refractive index of a sample. The optical system may include a laser source configured to emit a laser beam, and a non-linear crystal configured to generate, based on the laser beam, an infrared light beam which passes through the sample, and a visible signal light beam. The optical system may further include a first mirror configured to reflect the visible signal light beam, a second mirror configured to reflect the infrared light beam so that the reflected infrared light beam interacts with the reflected visible signal light beam in the non-linear crystal, and a photodetector configured to determine a property of the reflected visible signal light beam which has interacted with the reflected infrared light beam for determining the refractive index of the sample.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: May 12, 2020
    Assignee: Agency for Science, Technology and Research
    Inventors: Leonid Krivitskiy, Dmitry Kalashnikov, Anna Paterova
  • Patent number: 10585037
    Abstract: There is provided a substance detecting device emits first invisible light to the inside and the outside of a detection region of a substance, changes an emitting direction of the first invisible light inside and outside the detection region, receives third invisible light which is passing light of the first invisible light through the reference cell in which a detection target substance is stored, outside of the detection region, and adjusts a temperature of the first invisible light and controls the wavelength of the first invisible light based on the wavelength characteristics of the third invisible light.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: March 10, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuhiro Yanagi, Keiji Hirata
  • Patent number: 10495569
    Abstract: The invention relates to a method, system, and computer program product for determining a composition of a gas mix in a vehicle, said method comprising the steps of: exposing the gas mix with light; measuring data relating to a light absorption of the gas mix at at least two different pressures of the gas mix; and determining the composition of the gas mix based on said measured data. The invention relates also to a vehicle equipped with said system.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: December 3, 2019
    Assignee: Scania CV AB
    Inventors: Ola Stenlåås, Henrik Röjdegård
  • Patent number: 10466105
    Abstract: Disclosed is a remote spectroscopy device of the LIDAR type including a module for generating an emission signal, an emission module for sending the emission signal toward a targeted material, a receiving module for receiving a response signal and a module for postprocessing of the response signal to determine a composition of the targeted material. The generating module includes at least two laser sources, each laser source being able to generate a laser signal at a predetermined wavelength, an upstream mixer able to mix the laser signals generated by the different laser sources, and a first modulator able to modulate the composite signal at a first modulation frequency to form the emission signal.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: November 5, 2019
    Assignees: CENTRE NATIONAL D'ETUDES SPATIALES, Office National d'Etudes et de Recherches Aérospatiales
    Inventors: Philippe Hébert, François Lemaître, Xavier Orlik, Thibault Dartigalongue
  • Patent number: 10461760
    Abstract: In the present invention an alkali vapor cell is proposed comprising a sealed chamber enclosing an alkali atomic gas therein and having at least one optically transparent window. The chamber and the transparent window define an optical beam path through which a light beam can pass and which interacts with the alkali atomic gas in the chamber. The alkali vapor cell comprises at least one localized condensation area of alkali atoms at a predetermined location in the sealed chamber and the predetermined location is located inside or outside the optical beam path. The localized condensation area has higher alkali metal wettability than any other surface portion of the alkali vapor cell outside said localized condensation area.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: October 29, 2019
    Assignee: CSEM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA—RECHERCHE ET DÉVELOPPEMENT
    Inventors: Jean Gobet, Thomas Overstolz, Fabien Droz-dit-Busset
  • Patent number: 10396810
    Abstract: A quantum interference device includes an atomic cell, a light source, a light detector, a package, and a reflective portion. The atomic cell has alkali metal atoms disposed within, and the light source emits light to excite the alkali metal atoms in the atomic cell. The light detector detects light transmitted through the atomic cell. The package defines an internal space and houses at least the light source. The reflective portion is provided between an inner surface of the package and the light source, and has reflectance to an electromagnetic wave having a wavelength of 4 ?m, where the reflectance is greater than or equal to 50%.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: August 27, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Maki, Nobuhito Hayashi
  • Patent number: 10345230
    Abstract: The present invention is a spectroscopic analyzer that when measuring the concentration of a predetermined component contained in sample gas in a reduced pressure state lower than atmospheric pressure, obtains the concentration of the predetermined component with accuracy. The spectroscopic analyzer is one that measures the absorbance of the predetermined component contained in the sample gas in a reduced pressure state lower than atmospheric pressure, and calculates the concentration of the predetermined component with use of a calibration curve indicating the relationship between the absorbance of the predetermined component and the concentration of the predetermined component and a relational expression between the pressure of the sample gas at the time of the measurement and the concentration of the predetermined component.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: July 9, 2019
    Assignee: HORIBA, LTD.
    Inventor: Katsumi Nishimura
  • Patent number: 10337859
    Abstract: Measurement apparatuses and methods are disclosed for generating high-precision and -accuracy gas concentration maps that can be overlaid with 3D topographic images by rapidly scanning one or several modulated laser beams with a spatially-encoded transmitter over a scene to build-up imagery. Independent measurements of the topographic target distance and path-integrated gas concentration are combined to yield a map of the path-averaged concentration between the sensor and each point in the image. This type of image is particularly useful for finding localized regions of elevated (or anomalous) gas concentration making it ideal for large-area leak detection and quantification applications including: oil and gas pipeline monitoring, chemical processing facility monitoring, and environmental monitoring.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: July 2, 2019
    Assignee: Bridger Photonics, Inc.
    Inventors: Aaron Kreitinger, Michael Thorpe
  • Patent number: 10302563
    Abstract: A gas analyzing apparatus includes first and second laser sources that output first and second laser lights, a laser controller that controls the first and second laser sources to vary wavelengths of the first and second laser lights in the respective predetermined wavelength ranges, an optical multiplexer that multiplexes the first and second laser lights to transmit the multiplexed laser light to a target gas, an optical receiver that receives the laser light transmitted through the target gas, and an analyzer that analyzes a temperature and/or a concentration of the target gas based on an electric signal output from the optical receiver. While varying the wavelengths of the laser lights, the laser controller controls amplitudes of the first and second laser lights to differ from each other and varies intensities of the first and second laser lights in the opposite direction.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: May 28, 2019
    Assignee: Tokushima University
    Inventors: Yoshihiro Deguchi, Takahiro Kamimoto
  • Patent number: 10274431
    Abstract: A method for evaluating the pH of an aqueous solution by utilizing the optical properties of a pH sensing material includes optically active nanoparticles fixed to a substrate. The optically active nanoparticles have a localized refractive index modulation over a pH range from 2.0 to 12.0 of at least 1% and, where the plurality of optically active nanoparticles have an average nanoparticle diameter of less than about 500 nanometers. The method includes contacting the pH sensing material with the aqueous solution, illuminating the pH sensing material, and monitoring an optical signal generated through comparison of incident light and exiting light to determine the optical transmission, absorption, reflection, and/or scattering of the pH sensitive material. The optical signal of the pH sensitive material varies in response to the pH of the aqueous solution, providing a means by which the pH and any changes in the pH may be analyzed.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: April 30, 2019
    Assignee: U.S. Department of Energy
    Inventors: Douglas Kauffman, Christopher Matranga, Paul R. Ohodnicki, Jr., Xin Su, Congjun Wang
  • Patent number: 10215705
    Abstract: The present invention provides a system for measuring a multiphase flow. Fibre optic probes are arranged around a pipe (109) where a multiphase flow passes through for obtaining information about the flow. The data collected from the probes will be translated into useful information.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: February 26, 2019
    Assignee: Petroliam Nasional Berhad
    Inventors: Sultan @ Maung Maung Myo Thant Feroz, Mohd Shahrul Amir S. Zamberi, Aida Azni Zulkifli, Duhita Sharma
  • Patent number: 10209184
    Abstract: A test unit having a light source (e.g., a laser) for illuminating an aerosol sample directed into a test chamber and a removable insert for the test unit. The test unit includes at least one detector for detecting the effect of the aerosol sample on light, i.e., the detector detects at least one property of light after the light has illuminated the aerosol sample. The removable insert may take a number of different forms. For example, the removable insert can form at least a portion of an unsealed or sealed test chamber when installed in an operating position. Further, the removable insert may include a removable support and at least one film or collection substance connected or applied to the removable support. The at least one film could be a filter or a non-filter. The filter could be a polarization filter (i.e., horizontal or vertical) or a fluorescence filter.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: February 19, 2019
    Assignee: HAMILTON ASSOCIATES, INC.
    Inventors: David B. Silcott, Brian Bolton
  • Patent number: 10209176
    Abstract: A flow cell device including a spherical optical element is disclosed. The spherical lens can be sealed to the body of the flow cell device in a manner that provides external optical access to a fluid in an analysis region of a flow path through the flow cell device. The seal can be provided by an elastomer, a polymer, or a deformable metal. The disposition of the spherical lens to the flow path enables in situ optical analysis of the fluid. An optical analysis device can be removably connected to the flow cell device to provide the optical analysis. In some embodiments the optical analysis device is a portable Raman spectrometer. The flow cell device can provide a supplementary interrogation interface, and/or an on board sensor device(s) to enable multivariate analysis and/or advanced triggering.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: February 19, 2019
    Assignee: MarqMetrix, Inc.
    Inventors: Giora Proskurowski, Brian James Marquardt
  • Patent number: 10161859
    Abstract: Embodiments relate generally to gas detector systems and method, wherein a gas detector system may comprise at least one emitter configured to emit radiation in a beam path; at least one detector configured to receive at least a portion of the emitted radiation, wherein the emitted radiation generates at least two focused spots at the at least one detector; a ring reflector configured to direct the emitted radiation around the ring reflector toward the at least one detector, wherein the ring reflector comprises at least a portion of a spheroid shape, and wherein the ring reflector is configured to allow gas to flow through at least a portion of the beam path; and a processing circuit coupled to the one or more detectors configured to processes an output from the one or more detectors.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: December 25, 2018
    Assignee: Honeywell International Inc.
    Inventors: Bernard Fritz, Teresa Marta, Chad Langness
  • Patent number: 10161058
    Abstract: Provided are a Ga2O3-based single crystal substrate including a Ga2O3-based single crystal which has a high resistance while preventing a lowering of crystal quality and a production method therefor. According to one embodiment of the present invention, the production method includes growing the Ga2O3-based single crystal while adding a Fe to a Ga2O3-based raw material, the Ga2O3-based single crystal (5) including the Fe at a concentration higher than that of a donor impurity mixed in the Ga2O3-based raw material, and cutting out the Ga2O3-based single crystal substrate from the Ga2O3-based single crystal (5).
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: December 25, 2018
    Assignee: Tamura Corporation
    Inventor: Kohei Sasaki
  • Patent number: 10121673
    Abstract: In an embodiment, a miniaturize particulate matter detector includes a filter having a plurality of holes, and a concentration detector correspondingly disposed under the filter. The concentration detector has a detect area used for detecting a concentration of at least one miniaturize particulate matter. A manufacturing method of the filter is also provided.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: November 6, 2018
    Assignee: Industrial Technology Research Institute
    Inventors: Chia-Wen Chiang, Cheng-Ta Ko, I-Hsing Lin
  • Patent number: 10106833
    Abstract: The present invention provides moenomycin-based probe compounds of Formula (I) for use in screening inhibitors of bacterial glycosyltransferases. The present invention also provides bacterial glycosyltransferase screening assays using compounds of Formula (I).
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: October 23, 2018
    Assignee: President and Fellows of Harvard College
    Inventors: Daniel Evan Kahne, Suzanne Walker Kahne, Christian M. Gampe, Hirokazu Tsukamoto
  • Patent number: 10101208
    Abstract: The present invention relates to a ring-down spectrometry apparatus in absorption saturation condition, for measuring the concentration of a gas through a measurement of the spectrum of a molecular transition of said gas. The apparatus includes a laser source, an adjuster for varying the wavelength of said radiation emitted by said laser, and a resonant cavity. A photodetector is adapted to detect an electromagnetic radiation beam and is adapted to generate a decay signal. An electronic circuit receives the signal from the photodetector and is adapted to convert it to a processor. A processor is adapted to receive said decay signal from the photodetector and perform interpolation to obtain a concentration of said gas.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: October 16, 2018
    Assignee: CONSIGLIO NAZIONALE DELLE RICERCHE
    Inventors: Giovanni Giusfredi, Iacopo Galli, Pablo Cancio Pastor, Davide Mazzotti, Paolo De Natale
  • Patent number: 10101264
    Abstract: This invention is a multiple reflection type cell that makes it possible to reduce a dead space resulting from a position adjusting mechanism and to adjust the light to a desired optical path length without complicating a structure. The multiple reflection type cell comprises a cell body where a cell chamber is formed, two or more reflecting members that are mounted on the cell body and whose reflecting surfaces locate in the cell chamber, and a position adjusting mechanism that adjusts a position of the reflecting member relative to the cell body. The cell body has a mounting part that communicates the cell chamber and the outside and on which the reflecting members are mounted. A seal member that seals a gap between the cell chamber and the outside of the cell body is arranged between the reflecting member mounted on the mounting part and the cell body so that the gap between the cell chamber and the outsider of the cell body is sealed by the seal member.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: October 16, 2018
    Assignee: Horiba Ltd.
    Inventors: Takeshi Akamatsu, Yoshiyuki Nakajima
  • Patent number: 10048196
    Abstract: Methods and apparatuses of generating and processing a real-time time-domain cavity ringdown spectroscopy (CRDS) signal from absorbing species in an optical detection system having an optical ringdown cavity using off-axis paths are provided. At least one modulated light signal is generated using one or more light sources, each modulated at specified modulation frequency. Each modulated signal has harmonic frequency components and is input off-axis relative to the cavity's optical axis. The cavity contains mirrors arranged in a predetermined configuration. The optical axis is defined by a path passing through centers of mirrors. The modulated light signal is resonated off axis without astigmatic optical elements to produce CRDS signal and passes at least twice through cavity and across the mirrors without interfering with itself. An overall path length through cavity is greater than path length of optical axis. A photodetector detects the CRDS signal, which is demodulated dependent upon selected harmonics.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: August 14, 2018
    Assignee: NewSouth Innovations Pty Limited
    Inventors: Charles Charbel Harb, Toby Kristian Boyson
  • Patent number: 10024833
    Abstract: A method for the quality control of dairy products is disclosed. The method includes scanning the surface of a dairy product test sample using a chromatic scanner system to generate a spectral pattern of reflected light intensities, which pattern is unique to the test sample. The spectral pattern from the test sample is compared with spectral patterns from one or more reference dairy products to provide an indication of test sample identify, quality and/or nutritional content.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: July 17, 2018
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Yansong Gu
  • Patent number: 10024787
    Abstract: A method includes receiving a gas mixture at a first pressure including at least a primary gas and a secondary gas and changing a pressure of the received gas mixture from the first pressure to a second pressure. Further, the method includes determining a spectra of the gas mixture at the second pressure, wherein at least the first spectral line of the primary gas is spectrally distinguished from at least the second spectral line of the secondary gas, identifying a peak wavelength associated with the spectrally distinguished first spectral line of the primary gas based on at least two wavelengths of the secondary gas corresponding to at least two peak amplitudes in the spectra of the gas mixture, and determining a concentration of the primary gas based on the identified peak wavelength associated with the spectrally distinguished first spectral line of the primary gas.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: July 17, 2018
    Assignee: General Electric Company
    Inventors: Rachit Sharma, Chayan Mitra, Sandip Maity, Vinayak Tilak, Xiaoyong Liu, Anthony Kowal, Chong Tao
  • Patent number: 10013616
    Abstract: Systems and methods are presented for operating a vehicle camera system to detect, identify, and mitigate camera lens contamination. An image is received from a camera mounted on the vehicle and one or more metrics is calculated based on the received image. The system determines whether a lens of the camera is contaminated based on the one or more calculated metrics and, if so, determines a type of contamination. A specific mitigation routine is selected form a plurality of mitigation routines based on the determined type of contamination and is applied to the received image to create an enhanced image. The enhanced image is analyzed to determine whether the contamination is acceptably mitigated after application of the selected mitigation routine and a fault condition signal is output when the contamination is not acceptably mitigated.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: July 3, 2018
    Assignee: Robert Bosch GmbH
    Inventor: Mark Gehrke
  • Patent number: 10006811
    Abstract: An optical system comprising a randomizer that has a plurality of randomly positioned scatterers for scattering and thereby randomizing light to generate a speckle pattern and a detector for detecting the speckle pattern to determine at least one property of the light and/or change in at least one property of the light.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: June 26, 2018
    Assignee: UNIVERSITY COURT OF THE UNIVERSITY OF ST ANDREWS
    Inventors: Kishan Dholakia, Michael Mazilu, Klaus Metzger
  • Patent number: 9970871
    Abstract: A testing apparatus for testing vaporizers of electronic cigarettes, or electronic cigarettes or parts thereof comprising the vaporizers, comprises a movable holding construction part provided with multiple holding units each for holding a vaporizer, or electronic cigarette or part thereof comprising the vaporizer. A channel construction part moves synchronously with the holding construction part and is provided with multiple first channels. An inlet opening of each first channel is in fluid communication with a vapor output of a vaporizer in an associated holding unit. The outlet openings of the first channels move along an outlet opening trajectory. A fluid duct has a stationary inlet port adjacent to the outlet opening trajectory. The fluid duct is connected to a fluid pump to create a fluid flow in the fluid duct in a direction away from the inlet port. A vapor sensor is arranged in the fluid duct.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: May 15, 2018
    Assignee: SLUIS CIGAR MACHINERY B.V.
    Inventors: Oscar Slurink, Lambert Wijnand Breman, Abraham Van Den Berg
  • Patent number: 9952144
    Abstract: A capillary absorption spectrometer and process are described that provide highly sensitive and accurate stable absorption measurements of analytes in a sample gas that may include isotopologues of carbon and oxygen obtained from gas and biological samples. It further provides isotopic images of microbial communities that allow tracking of nutrients at the single cell level. It further targets naturally occurring variations in carbon and oxygen isotopes that avoids need for expensive isotopically labeled mixtures which allows study of samples taken from the field without modification. The process also permits sampling in vivo permitting real-time ambient studies of microbial communities.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: April 24, 2018
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: M. Lizabeth Alexander, James F. Kelly, Robert L. Sams, James J. Moran, Matthew K. Newburn, Thomas A. Blake
  • Patent number: 9952145
    Abstract: A radiation detector for a non-dispersive infrared gas analyzer has two detector chambers, which are surrounded by a housing and separated by a separating element permeable to infrared radiation and impermeable to gas and which can be filled with a radiation-absorbing measurement gas. A receiving element, which has a measuring system fastened therein and including a flow- or pressure-sensitive sensor, can be attached to a contact surface on an outer face of the housing. Each detector chamber is pneumatically connected to the measuring system by a channel, which extends in the housing and is open to gas. The housing of the radiation detector is modularly constructed and includes a base element, which encloses the channel, the separating element, and the measuring system fastened in the receiving element, and a first and a second outer element, each of which can be connected to the base element and surrounds a detector chamber.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: April 24, 2018
    Assignee: Emerson Process Management GmbH & Co. OHG
    Inventors: Rudolf Schneider, Leif Knoepke, Marc Winter, Erich Wombacher
  • Patent number: 9939319
    Abstract: A radiation measuring device for measuring electromagnetic radiation originating from an external source. The radiation measuring device includes, a spectrometer, a pyranometer, a pyrgeometer, a diffuser, and a control unit. The spectrometer and a pyranometer are positioned in a sensor zone of a housing of the radiation measuring device. The spectrometer measures visible shortwave radiation and near-infrared shortwave radiation received at the sensor zone. The pyranometer measures shortwave radiation received at the sensor zone. The pyrgeometer is positioned in another sensor zone of the housing and measures longwave radiation received at the other sensor zone. The control unit receives radiation measurements from the spectrometer, pyranometer, and pyrgeometer. A corrected amount of radiation received at the sensor zones of the radiation measuring device is determined from the received radiation measurements. Other embodiments are described and claimed.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: April 10, 2018
    Assignee: Arable Labs, Inc.
    Inventors: Lawrence Adam Wolf, Benjamin Joseph Siegfried
  • Patent number: 9915605
    Abstract: An in-situ gas-measuring system (1) includes an IR photon source (10) and an IR photon detector (11). The in-situ gas-measuring system (1) has an expansion chamber (12), at which an optical element (16, 16?, 16?) is arranged. A connection element (13) provides a detachable fluid-communicating connection of the expansion chamber (12) to a gas reaction chamber (2). The IR-photon source (10), the optical element (16, 16?, 16?) and the IR photon detector (11) define an optical measuring path, which extends through the expansion chamber (12). The installation and maintenance of the in-situ gas-measuring system (1) are reduced by the features of the in-situ gas-measuring system (1).
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 13, 2018
    Assignee: Dräger Safety AG & Co. KGaA
    Inventor: Patrick Schmidt-Kaeding
  • Patent number: 9863874
    Abstract: A method for signal detection with a gas analysis system (1, 1?) includes a radiation source (3); a gas measuring section (9) containing gas to be measured; a Fabry-Perot interferometer (13); a thermal sensor (17) configured to cause a change in voltage between electrodes with electromagnetic radiation falling thereon and arranged such that radiation released by a second interferometer mirror falls on the thermal sensor. The method includes irradiating the gas measuring section with radiation source radiation, continuously increasing or decreasing a distance of interferometer mirrors during a generating of time signal pulses at a constant period of time from one another. After a predefined number of time signal pulses, the voltage generated between the electrodes is detected and stored as a measured signal value. After a further predefined number of time signal pulses, the voltage generated between the electrodes is detected again and stored as a measured signal value.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: January 9, 2018
    Assignee: Drägerwerk AG & Co. KGaA
    Inventors: Peter Dreyer, Livio Fornasiero, Arne Tröllsch, Robert Jahns
  • Patent number: 9851296
    Abstract: A diagnostic system for measuring temperature, pressure, CO2 concentration and H2O concentration in a fluid stream is described. The system may include one or more probes that sample the fluid stream spatially, temporally and over ranges of pressure and temperature. Laser light sources are directed down pitch optical cables, through a lens and to a mirror, where the light sources are reflected back, through the lens to catch optical cables. The light travels through the catch optical cables to detectors, which provide electrical signals to a processer. The processer utilizes the signals to calculate CO2 concentration based on the temperatures derived from H2O vapor concentration. A probe for sampling CO2 and H2O vapor concentrations is also disclosed. Various mechanical features interact together to ensure the pitch and catch optical cables are properly aligned with the lens during assembly and use.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: December 26, 2017
    Assignee: UT-Battelle, LLC
    Inventors: William P. Partridge, Jr., Gurneesh Singh Jatana, Ji Hyung Yoo, James E. Parks, II
  • Patent number: 9846117
    Abstract: Detector data representative of an intensity of light that impinges on a detector after being emitted from a light source and passing through a gas over a path length can be analyzed using a first analysis method to obtain a first calculation of an analyte concentration in the volume of gas and a second analysis method to obtain a second calculation of the analyte concentration. The second calculation can be promoted as the analyte concentration upon determining that the analyte concentration is out of a first target range for the first analysis method.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: December 19, 2017
    Assignee: SpectraSensors, Inc.
    Inventors: Xin Zhou, Xiang Liu, Alfred Feitisch
  • Patent number: 9816976
    Abstract: A system and method to accurately estimate the strength and changes of the monitoring signal for sensing applications, this invention involves the monitoring of signal strength and changes through the use of a pseudorandom binary sequence bit stream to modulate the transmitter of a data link, when beating the transmitter signal with absorption structure signal from the sensor at the receiver, the changes in the received signal strength are proportional to the sensing signal being monitored. The received signal bit pattern is monitored by an error detector scheme to report a Bit Error Rate level based on the changes in the sensing signal level as compared to the bit stream from the transmitter. This results in a very accurate robust monitoring technique with high consistency and repeatability.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: November 14, 2017
    Inventor: Mohamad Haidar Shahine
  • Patent number: 9810623
    Abstract: The present invention relates to portable devices for point-of-care diagnostics that can perform measurements on a sample (e.g., blood, serum, saliva, or urine) and relay data to an external device for, e.g., data analysis. The device can comprise a paper-based diagnostic substrate and a base substrate that include electronic circuitry and electronic elements necessary for performing the measurements. The device can also comprise an antenna for near field communication with an external device. Another aspect of the invention relates to methods of using these devices.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: November 7, 2017
    Assignee: MC10, Inc.
    Inventors: Roozbeh Ghaffari, Alexander Aranyosi, Stephen Lee
  • Patent number: 9768976
    Abstract: A gas detection unit capable of automatically communicating event data is provided. The unit includes a housing, a gas detector module mounted in the housing, and a programmable processor configured to retain preselected event data of the gas detector module and to automatically initiate a wireless signal communicating the preselected event data for further transmission to a remote database in response to the detection of an available communication connection. The unit can include a low power radio module configured to transmit a low power radio signal communicating the preselected event data in response to initiation of the wireless signal by the programmable processor.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: September 19, 2017
    Assignee: Honeywell International Inc.
    Inventors: Emily Fabes, Dale Broemer, Steve Worthington
  • Patent number: 9766424
    Abstract: A camera module generally provided in a mobile terminal. The camera module includes a lens unit which is configured to accommodate at least one lens. An actuator unit is configured to fix the lens unit, and a base which is fixed by an adhesive to the bottom of the actuator. A printed circuit board (PCB) to which the base is fixed for thereby supplying electric power to the actuator unit. Either a corner of an outer side of the bottom of the actuator unit or a corner of an outer side of the top of the base is tapered.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: September 19, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Nae Seong Kim, Seong Cheol Jeong
  • Patent number: 9746408
    Abstract: A dust sensor includes a multi-wavelength light source, a receiver, and a controller. The light source emits light of different wavelengths. The receiver generates one or more acoustic wave measurement values based on acoustic waves irradiated from the light source to air particles. The controller controls at least one flickering cycle of the light source, determines the type particles based on the acoustic wave measurement values, and calculates the concentration of particles. The controller calculates the concentration of particles in proportion to an intensity of the acoustic wave measurement values, and determine the type of particles based on the acoustic wave measurement values. The acoustic waves are generated differently based on wavelengths of light emitted from the multi-wavelength light source.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: August 29, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hong Shik Shim, Jae Ik Lim, Jin Woo Choi
  • Patent number: 9739903
    Abstract: Systems and methods for actively controlling the damping of a wellbore logging tool are disclosed herein. A wellbore logging tool system comprises a processor, a memory, a wellbore logging tool comprising an acoustic transmitter, and a logging tool control module. The logging tool control module is operable to receive sensor signals from one or more sensors coupled to the wellbore logging tool after an actuation control signal has been transmitted to the acoustic transmitter and determine, using the received sensor signals, one or more current dynamic states of the acoustic transmitter. The logging tool control module is also operable to determine a damping control signal based on the one or more current dynamic states of the acoustic transmitter and transmit the damping control signal to the acoustic transmitter of the wellbore logging tool.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: August 22, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Xingyong Song, Yiming Zhao, Jason D. Dykstra
  • Patent number: 9739143
    Abstract: Systems and methods for detecting faults in the active damping of a logging tool are disclosed herein. A wellbore logging tool system comprises a processor, a memory, a wellbore logging tool comprising an acoustic transmitter, and a logging tool control module. The logging tool control module is operable to receive sensor signals from one or more sensors coupled to the wellbore logging tool after a damping control signal has been transmitted to the acoustic transmitter. The logging tool control module is also operable to determine one or more expected sensor signals, determine error values using the expected sensor signals and the sensor signals received from the one or more sensors, and compare the error values with one or more thresholds.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: August 22, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Xingyong Song, Yiming Zhao, Jason D. Dykstra
  • Patent number: 9644940
    Abstract: A system and method for the monitoring of ammonia in a fluid. The ammonia monitoring system includes an ammonia sensor that is configured to detect trace amounts of ammonia (NH3) in a fluid (i.e., gas or liquid) that is pumped through it in real time. The real time ammonia sensor includes an interferometer configured to track the amount of ammonia that is pumped into the real time ammonia sensor. The ammonia monitoring system, via the real time ammonia sensor, is further configured to detect ammonia levels in industrial poultry houses and provide electronic feedback to the building's ventilation control system.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: May 9, 2017
    Assignee: Lumense, Inc.
    Inventors: Daniel Campbell, Jayme Caspall, Janet Cobb-Sullivan, Bonnie Bobzin, Kenneth Johnson, Robert E. Jones, Michael Slawson
  • Patent number: 9645076
    Abstract: A method for determining a concentration of at least one individual gas present in a gas-mixture includes irradiating a first component by incident modulated-light-beams characterized by a determined absorption wavelength range, modulation frequencies and a modulation amplitudes to generate first transmitted-light-beams, irradiating a second component, comprising a determined concentration of the at least one individual gas, by the first incident modulated-light-beams to generate second transmitted-light-beams, generating noise signals representative of a characteristic of the first transmitted-light-beams, generating noise-free signals representative of a characteristic of the second transmitted-light-beams, selecting an optimal modulation frequency and an optimal modulation amplitude from the modulation frequencies and the modulation amplitudes based on the noise signals and the noise-free signals, and determining a concentration of the at least one individual gas in the gas-mixture based on the optimal mod
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: May 9, 2017
    Assignee: General Electric Company
    Inventors: Nagapriya Kavoori Sethumadhavan, Sandip Maity, Samhitha Palanganda Poonacha, Moitrayee Mukherjee, Purbasha Halder, Harish Sasikumar, Prasenjit Pandey