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111.发明申请公开(公告)号：US20090195778A1
公开(公告)日：2009-08-06
申请号：US12012045
申请日：2008-02-01
Applicant: Vladimir Yankov
Inventor： Vladimir Yankov
CPC classification number: G02B6/12007 , G01N21/253 , G01N21/31 , G01N21/552 , G01N21/65 , G01N21/658 , G01N21/7703 , G01N21/774 , G01N2201/0221 , G01N2201/088 , G02B6/124
Abstract: A planar nanospectrometer formed as a single chip that uses diffraction structures, which are combinations of numerous nano-features placed in a predetermined configuration and providing multiple functionalities such as guiding light, resonantly reflecting light at multiple wavelengths, directing light to detectors, and focusing light on the detectors. The diffraction structure can be described as a digital planar hologram that comprises an optimized combination of overlaid virtual sub-gratings, each of which is resonant to a single wavelength of light. Each device includes at least one sensor, at least one light source, and at least one digital planar hologram in an optical waveguide. The device of the present invention allows detection of small amounts of analytes in gases and liquids or on solid surfaces and can be particularly advantageous for field analysis of environmental safety in multiple locations because of its miniature size and low cost.
Abstract translation: 形成为使用衍射结构的单个芯片的平面纳米光谱仪，其是以预定配置放置的许多纳米特征的组合，并且提供多个功能，例如引导光，共振地反射多个波长的光，将光引导到检测器，以及聚焦光 在探测器上。 衍射结构可以描述为数字平面全息图，其包括叠加的虚拟子光栅的优化组合，每个虚拟子光栅与单个波长的光共振。 每个装置在光波导中包括至少一个传感器，至少一个光源和至少一个数字平面全息图。 本发明的装置允许在气体和液体或固体表面上检测少量的分析物，并且由于其微型尺寸和低成本，可以特别有利于在多个位置的环境安全的现场分析。
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公开(公告)号：US07551810B2
公开(公告)日：2009-06-23
申请号：US11232629
申请日：2005-09-22
Applicant: Alexander Berger , Robert A. Lieberman
Inventor： Alexander Berger , Robert A. Lieberman
IPC: G02B6/00
CPC classification number: G01J3/02 , G01J3/0218 , G01N21/7703 , G01N21/78 , G01N2021/7716 , G01N2021/7779 , G01N2021/7783 , G01N2201/0833 , G01N2201/088 , G02B6/441 , G02B6/4434
Abstract: A fiber optic sensor for sensing the presence of an analyte has a plurality of optical fibers each of which has at least one analyte sensing segment and one or more low loss lead portion, where the optical fibers are disposed on the periphery of a fiber carrier. The analyte sensing segments may be disposed in an offset relationship to provide continuous detection over a desired distance or they may be spaced apart to provide detection at selected locations. More than one set of optical fibers with sensing segments may be combined to provide detection of multiple analytes. Multiple fiber carriers allow each segment or the grouped sets of segments to be coupled together over a distance either in offset relationship or in spaced apart relationship.
Abstract translation: 用于感测分析物的存在的光纤传感器具有多个光纤，每个光纤具有至少一个分析物传感段和一个或多个低损耗引线部分，其中光纤设置在光纤载体的外围。 分析物感测段可以以偏移关系设置，以在期望距离上提供连续检测，或者它们可以间隔开以在选定位置提供检测。 可以组合具有感测段的多于一组光纤以提供多种分析物的检测。 多个光纤载体允许每个段或分组的段组在偏移关系或间隔开的关系中以一定距离耦合在一起。
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113.发明公开公开(公告)号：US20240288364A1
公开(公告)日：2024-08-29
申请号：US18584024
申请日：2024-02-22
Applicant: HONEYWELL INTERNATIONAL INC.
Inventor： Prince Ashwin Kumar Anburaj JAYAKUMAR , Nirmal A KUMAR , Shridhara SHANBHOGUE , M Kantha Raj URS
IPC: G01N21/3518 , G01N33/00 , G02B6/02 , H01M10/48
CPC classification number: G01N21/3518 , G01N33/0047 , G02B6/0208 , H01M10/48 , G01N2201/088
Abstract: An example system, method, and computer program product for detecting thermal runaway in a battery cell is provided. The example system includes a light source configured to emit light across a spectrum of wavelengths toward a sensing fiber having a first end and a second end. The sensing fiber may be positioned to receive the light emitted by the light source at the first end. The sensing fiber may further contain a filtering mechanism configured to reflect a portion of the spectrum of wavelengths of the light. In addition, the sensing fiber may be optically coupled to a photodiode at the second end, such that a portion of the light is reflected as the light travels through the sensing fiber. The gas may be detected based at least in part on an intensity of the light received at the photodiode indicating the onset of thermal runaway.
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公开(公告)号：US11692883B2
公开(公告)日：2023-07-04
申请号：US17082577
申请日：2020-10-28
Applicant: Advanced Energy Industries, Inc.
Inventor： Terry Stapleton , Jason Errett
CPC classification number: G01K11/3213 , G01N21/17 , G01N21/63 , G01N21/64 , G02B6/264 , G01N2201/08 , G01N2201/088
Abstract: A fiber optic temperature probe is disclosed. The fiber optic temperature probe includes a probe shaft containing an optical fiber. An optical temperature sensor element is coupled to the probe shaft and configured to be excited by light from the optical fiber and emit light back to the optical fiber. A thermally conductive plate is coupled to the probe shaft and interfaces with the optical temperature sensor element. Baffling extends from the probe shaft and surrounds the edges of the thermally conductive plate.
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公开(公告)号：US20180238791A1
公开(公告)日：2018-08-23
申请号：US15903638
申请日：2018-02-23
Inventor： HAMID E. LIMODEHI , FRANÇOIS LÉGARÉ , MOHAMED CHAKER
CPC classification number: G01N19/10 , G01D5/353 , G01N21/553 , G01N2201/088 , G02B6/4246 , G02B6/4298
Abstract: A humidity sensing method and system comprising a transmitter, comprising a fiber optic head and a light source comprising a single LED emitting a measuring light, a receiver, and a sensing assembly comprising a plurality of optical fibers each comprising a first end fed the measuring light, a transducer positioned along a length thereof, the transducer comprising a side-polished portion of the optical fiber, the side polished portion coated with a gold layer and a film of a hydrophilic material wherein the transducer modifies an intensity of the measuring light dependent on an ambient humidity, and a second end for feeding the modified measuring light to the receiver, wherein the receiver compares an intensity of the measuring light with an intensity of the modified measuring light deriving therefrom a corresponding humidity level and dew point temperature.
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Patent Agency Ranking
公开(公告)号：US10018569B2
公开(公告)日：2018-07-10
申请号：US15153565
申请日：2016-05-12
Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION
Inventor： David W. Evans
IPC: G01N21/88 , G01N21/27 , B64D45/00 , H04B10/079 , H04B10/25 , G01M17/007 , G01N21/84
CPC classification number: G01N21/8806 , B64D45/00 , B64D2045/0085 , B64F5/60 , G01L1/242 , G01M5/0016 , G01M5/0033 , G01M5/0066 , G01M17/007 , G01N21/27 , G01N2021/8472 , G01N2201/088 , H04B10/07953 , H04B10/25
Abstract: A method for detecting defects in a composite structure, such as in an aircraft structure, that includes sending an optical signal down an optical fiber embedded in the composite structure and analyzing the optical signal at a detector. If it is determined that the optical signal is turning on and off or an increase in the bit error rate is occurring at the detector, the composite structure may be delaminating or the composite structure may be somehow damaged. If it is determined that the composite structure is damaged, the optical signal can be sent down a different optical fiber that may not be at a location where the composite structure is damaged, and a continuous beam of light can be sent down the optical fiber that is at the damaged part of the composite structure to determine whether the damage is increasing.
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公开(公告)号：US09939565B2
公开(公告)日：2018-04-10
申请号：US14670691
申请日：2015-03-27
Applicant: Qualitrol Company LLC
Inventor： Yuvi Kahana , Alexander Kots , Alexander Paritsky
CPC classification number: G02B5/09 , G01D5/268 , G01K5/56 , G01K5/62 , G01N21/47 , G01N2021/4709 , G01N2201/0873 , G01N2201/088 , G02B1/02 , G02B6/262
Abstract: A reflective element for directing an optical signal into a fiber optic sensor having an optical fiber includes a plane containing a sharply defined straight line that separates between a first area of low reflectivity and a second area of high reflectivity. The plane is disposed parallel to a free end surface of the optical fiber so that the free end surface intersects the line of the reflective element, whereby relative movement between the free end surface of the optical fiber and the line in response to a physical change sensed by the fiber optic sensor induces variations in an optical signal reflected by the reflective element through the optical fiber, which variations allow measurement of the physical change.
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118.发明授权公开(公告)号：US09835478B2
公开(公告)日：2017-12-05
申请号：US14911604
申请日：2013-10-07
Applicant: Halliburton Energy Services, Inc.
Inventor： David A. Barfoot , John Maida
CPC classification number: G01D5/35364 , G01N21/47 , G01N2021/4709 , G01N2021/4742 , G01N2201/088 , G01V8/16 , G02B6/02028 , G02B6/29391 , H01S3/11 , H01S3/302
Abstract: A fiber optic sensor interrogation system with inbuilt passive power limiting capability based on stimulated Brillouin scattering that provides improved safety performance for use in explosive atmospheres.
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公开(公告)号：US09677916B2
公开(公告)日：2017-06-13
申请号：US14331318
申请日：2014-07-15
Applicant: Palo Alto Research Center Incorporated
Inventor： Alex Hegyi , Peter Kiesel , Ajay Raghavan
CPC classification number: G01D5/35383 , G01D5/35316 , G01D5/3539 , G01L1/246 , G01N2201/088 , G01R31/3606 , G02B6/12009 , G02B6/2938
Abstract: An optical coupler includes at least one input waveguide and a plurality of output waveguides. The optical coupler spatially disperses optical signals carried on the input waveguide according to wavelength to the output waveguides. The input waveguides and the output waveguides are arranged to provide crosstalk between optical signals carried on the output waveguides.
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公开(公告)号：US20170138862A1
公开(公告)日：2017-05-18
申请号：US15313675
申请日：2015-05-28
Inventor： Arjen BOERSMA , Dennis Johannes Maria SNELDERS
CPC classification number: G01N21/774 , B01J20/10 , B01J20/18 , B01J20/226 , B01J20/28023 , B01J20/3204 , B01J20/3219 , B01J20/3238 , B01J20/3257 , B01J20/3295 , G01D5/35316 , G01N33/0036 , G01N2201/088
Abstract: The invention relates to an optical waveguide having a Fibre Bragg Grating, which waveguide is provided with a coating having a nanoporous sensor material, the sensor unit further having an optical detection unit for detecting a change in an optical property of the waveguide, wherein the grating is present in the core of the waveguide and the coating at least substantially surrounds the grating. The coating is expandable or shrinkable under the influence of the chemical substance, thereby causing a change in axial strain in the grating when the sensor material is exposed to the chemical substance, which change is detectible by a optical detection unit. The invention further relates to an optical sensor system for measuring a chemical substance, the sensor system having a waveguide according to the invention
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