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公开(公告)号：US20230221241A1
公开(公告)日：2023-07-13
申请号：US17997644
申请日：2021-06-10
申请人： CYTIVA SWEDEN AB
发明人： Hanno Ehring , Klaus Gebauer
CPC分类号： G01N21/05 , G01N21/15 , G01N2021/052 , G01N2201/0245
摘要： Disclosed is an optical flow cell (100, 300) and a method (400) for bioprocessing applications. The optical flow cell (100, 300) comprises a fluid inlet (102, 302), a fluid outlet (104, 304), and a fluid flow channel (106, 306) provided between said fluid inlet (102, 302) and said fluid outlet (104, 304). The optical flow cell (100, 300) also comprises an output optical waveguide (108, 308) configured to emit light into said fluid flow channel (106, 306), and a collector optical waveguide (110, 310) configured to collect light from said fluid flow channel (106, 306). An optical pathlength adjuster (120, 320) for varying the optical pathlength (130, 330) between said output optical waveguide (108, 308) and said collector optical waveguide (110, 310) is also provided.
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公开(公告)号：US11525949B2
公开(公告)日：2022-12-13
申请号：US16341709
申请日：2016-10-20
发明人： Guanglei Du , John A. Wheatley , Yihang Lv , Zhiyong Xu , Jingfei Chen
摘要： An example article may include an optical filter and a multilayer stack adjacent the optical filter. The multilayer stack may include a plurality of layers. Each respective layer of the plurality layers may define a respective window edge of a plurality of window edges. The plurality of window edges may define an optical window configured to transmit light through the optical filter. At least a first respective window edge of the plurality of window edges may be stepped relative to at least a second respective window edge of the plurality of window edges.
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公开(公告)号：US11433499B2
公开(公告)日：2022-09-06
申请号：US16618575
申请日：2018-06-11
发明人： Samuele Martelli , Matteo Venturi
摘要： An apparatus for checking mechanical parts such as tools on machine tools employs optical devices for emitting and receiving a light beam, for example a laser beam, along a checking direction, and sensors for detecting variations in the features of such a light beam. A protection device (15) for at least one of the optical devices comprises a support element (21,22) with an inner seat (20), communication conduits (18,26,34) aligned along the checking direction and a shutter (44) movable, in the internal seat, from a rest position to an operative position of the apparatus. The shutter comprises a transversal through hole (60) which is arranged along the checking direction in the operative position, aligned with the communication conduits to allow the light beam to pass through. A movable closure element (55), for example a small sphere or ball, is arranged in a transversal hollow (54) of the shutter and is pushed by a spring towards the outside of the transversal hollow. In the rest position of the apparatus, the transversal hollow is arranged along the checking direction and the movable closing element partially protrudes and cooperates with a gasket at the inlet of one of the communication conduits, to prevent the entry of foreign material and fluids into the optical device.
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公开(公告)号：US11221431B2
公开(公告)日：2022-01-11
申请号：US17147099
申请日：2021-01-12
发明人： Go Fujisawa , Sheng Chao , Timothy Jones , Nathan Lawrence , Rolf Rustad , Li Jiang , Steven Gahlings
IPC分类号： G01V8/10 , G01N21/3504 , G01N33/00 , G01N21/3577 , G01N21/552 , E21B49/08 , G01N21/15
摘要： A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2. The amount of CO2 is determined from the intensities of the mid-infrared radiation passing through the three filters.
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公开(公告)号：US11173524B2
公开(公告)日：2021-11-16
申请号：US16841509
申请日：2020-04-06
发明人： Nima Nabavi
IPC分类号： B08B3/04 , G02B27/00 , B08B1/04 , B08B1/02 , B08B1/00 , H04N5/217 , G01N21/15 , B08B17/00 , G01N21/90 , H04N5/225 , G01N21/88
摘要： Embodiments of the present disclosure address problems presented by contaminants, such as dirt and debris, by providing an optical apparatus with techniques and methodologies for self-cleaning. In that regard, embodiments of the present disclosure employ techniques and methodologies for maintaining a very thin (e.g., few microns thick) layer of liquid, such as a non-stick liquid, on an optical window of an optical body that shields or protects an optical device.
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公开(公告)号：US20210131949A1
公开(公告)日：2021-05-06
申请号：US17075329
申请日：2020-10-20
申请人： ENTEGRIS, INC.
发明人： Tracy GAST
摘要： A sensor assembly includes a passageway for a process fluid, an optical window, an optical sensor, and a nozzle. The optical sensor configured to detect an optical property of the process fluid. The optical window includes an inner surface. The nozzle configured discharge an atomized fluid in a discharge direction that intersects the inner surface of the optical window. A sensor system includes a sensor assembly and conduits for supplying a gas and a liquid to a nozzle of the sensor assembly. A method of cleaning an optical window in a sensor assembly includes forming an atomized fluid and discharging the atomized fluid in a discharge direction that intersects the optical window.
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公开(公告)号：US20210088450A1
公开(公告)日：2021-03-25
申请号：US17113536
申请日：2020-12-07
发明人： James E. Clark
IPC分类号： G01N21/77 , G01N21/85 , C02F1/00 , G01N33/18 , G01N21/15 , G01N21/88 , F21V8/00 , G01N21/78 , G01N31/22
摘要： Multi-parameter water analysis system with a water parameter sensing device configured to wirelessly provide detector data and a smart phone displayable indicator of water analysis test results that are calculated by an analysis application that is updateable via a cloud-based data resource to account for a manufacturing change in indicator chemistry and/or an improvement in test result display. The water parameter sensing device includes an optical sensing apparatus configured to detect light from each of a plurality of indicators for different parameters when the indicator and a chemical parameter are exposed to each other, a processor to process information of the detected light, and wireless communication circuitry for communicating detector data based on the information about the detected light to a remote device. Social networking of water quality data allows sharing to other users.
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8.发明授权公开(公告)号：US10948184B2
公开(公告)日：2021-03-16
申请号：US16445748
申请日：2019-06-19
摘要： A tunable diode laser absorption spectroscopy (TDLAS) optical head includes a housing configured for attachment to a sight tube attached to a wall of a process chamber. The TDLAS optical head further includes optics within the housing for transmitting, receiving, or transmitting and receiving a laser beam within a process chamber through the sight tube. The TDLAS optical head further includes a photo sensor in the housing positioned to receive light emitted by combustion within the process chamber to which the housing is attached.
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公开(公告)号：US10928321B2
公开(公告)日：2021-02-23
申请号：US14383468
申请日：2013-03-08
申请人： UBIQUITOME LIMITED
IPC分类号： G01N21/64 , B01L7/00 , B01L9/06 , C12Q1/686 , C12Q1/689 , C12Q1/70 , G02B27/14 , G01N21/15 , G01N21/03
摘要： An optical assembly 140 for a portable device for detecting molecule(s) within reaction vessels 110 comprises a collimator 403, a beam splitter arrangement and a plurality of guide arrangements 143. The collimator 403 collimates an excitation beam from an excitation source 400. The beam splitter arrangement splits the excitation beam from the collimator into a plurality of split excitation beams. Each beam splitter splits an incoming beam into two beams. In the case where the beam splitter arrangement comprises more than one beam splitter, the beam splitters are arranged in tiers such that a first tier comprises one beam splitter for receiving the excitation beam from the collimator, and each of the other tiers comprises one or more beam splitters. Each beam splitter in at least one of the other tiers receives a split excitation beam from a previous tier. Each guide arrangement 140 guides a respective one of the plurality of split excitation beams along an excitation path A from the beam splitter arrangement into a reaction vessel 110 containing a sample to stimulate an emission of a reaction light from the sample. Each guide arrangement 140 further guides reaction light from the sample along a detection path B towards a detector arrangement 142.
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公开(公告)号：US10921482B2
公开(公告)日：2021-02-16
申请号：US15511164
申请日：2015-09-09
发明人： Go Fujisawa , Sheng Chao , Timothy Jones , Nathan Lawrence , Rolf Rustad , Li Jiang , Steven Gahlings
IPC分类号： G01V8/10 , G01N21/3504 , G01N33/00 , G01N21/3577 , G01N21/552 , E21B49/08 , G01N21/15
摘要： A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2. The amount of CO2 is determined from the intensities of the mid-infrared radiation passing through the three filters
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