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公开(公告)号：US20240151584A1
公开(公告)日：2024-05-09
申请号：US18053246
申请日：2022-11-07
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Nicholas Skriba , James Tedesco , Joseph Slater
CPC classification number: G01J3/4412 , G01N21/65 , G01N2021/0346
Abstract: Flowcells and Raman analysis systems provide improved signal collection dynamics through increased solid-angle geometries and improved numerical aperture for near-diffraction-limited performance. A combined excitation/collection beam passes through a first optical material, a sample conduit and a second optical material. A concave reflective aspheric surface focuses and re-collimates the combined beam to and from a region of the sample within the conduit. The optical materials may comprise separate windows or may integrally form sidewalls the conduit. The reflective surface may be spaced apart from the second window or may be integrally formed with the second optical material. The focused region in the sample may approximate a point or a line, and at least a portion of the interior wall of the conduit may be reflective, causing the combined beam to pass through the sample region more than once to enhance collection efficiency.
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公开(公告)号：US11874230B2
公开(公告)日：2024-01-16
申请号：US17806134
申请日：2022-06-09
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Joseph B. Slater , Marc Winter , Oliver Link
CPC classification number: G01N21/65 , G01N9/24 , G01N33/0027
Abstract: A method for determining an amount of a Raman-invisible gas in a multi-component gas stream includes performing a first and second absolute Raman analysis on the gas stream. A decrease in the absolute Raman bands from the first analysis to the second analysis is attributed to an increase of the Raman-invisible gas in the gas stream. The amount of the Raman-invisible gas is calculated from the difference between the first and second sets of Raman bands. The calculation of the Raman-invisible gas is verified via a measurement and a calculation of a secondary property of the gas stream such as the thermal conductivity of the gas stream or the density of the gas stream.
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Patent Agency Ranking
公开(公告)号：US20230400413A1
公开(公告)日：2023-12-14
申请号：US17806134
申请日：2022-06-09
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Joseph B. Slater , Marc Winter , Oliver Link
CPC classification number: G01N21/65 , G01N33/0027 , G01N9/24
Abstract: A method for determining an amount of a Raman-invisible gas in a multi-component gas stream includes performing a first and second absolute Raman analysis on the gas stream. A decrease in the absolute Raman bands from the first analysis to the second analysis is attributed to an increase of the Raman-invisible gas in the gas stream. The amount of the Raman-invisible gas is calculated from the difference between the first and second sets of Raman bands. The calculation of the Raman-invisible gas is verified via a measurement and a calculation of a secondary property of the gas stream such as the thermal conductivity of the gas stream or the density of the gas stream.
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14.发明授权公开(公告)号：US11598726B2
公开(公告)日：2023-03-07
申请号：US17405536
申请日：2021-08-18
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Sean J. Gilliam
Abstract: A method of characterizing and monitoring a pressing process includes acquiring online Raman spectra of a juice pressing process within a vessel at different times during the pressing process to generate a training data set; acquiring physical samples from pressing process near in time to the acquired Raman spectra; performing offline measurements of the target analyte properties and/or compositions using an assay measurement technique; generating a correlative model of the target analyte such that spectral changes in the training data set correlate with the offline measurements of the target analyte properties and/or compositions; acquiring online Raman spectra of a subsequent run of the pressing process within the vessel at different times during the run to generate a process data set; and applying the correlative model to the process data set to qualitatively and/or quantitatively predict a value of a property and/or composition of the target analyte.
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公开(公告)号：US12174122B2
公开(公告)日：2024-12-24
申请号：US17937141
申请日：2022-09-30
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Joseph B. Slater , James M. Tedesco
IPC: G01N21/65
Abstract: A calibration reference for a multipass Raman analysis system, wherein a combination excitation and collection beam passes through a focal point F0 within a sample volume multiple times, is provided. The calibration reference includes a body of material having a known spectral response when illuminated by the combination excitation and collection beam. The size or shape of the body is selected or modified to keep the focal point at F0 within the body when the body is positioned within the sample volume for calibration purposes.
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公开(公告)号：US20240219292A1
公开(公告)日：2024-07-04
申请号：US18148519
申请日：2022-12-30
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Nicholas Skriba
CPC classification number: G01N21/05 , G01N21/65 , G02B3/0037 , G02B27/30
Abstract: Sampling optics for spectroscopic analysis include an array of optical elements as opposed to a single objective as used in conventional systems, achieving enhanced collection, inherent signal integration/averaging and improved measurement uniformity. At the same time, the etendue using the array is substantially the same as the etendue using a single-element objective. The array of closely packed optical elements may have spherical or aspherical surfaces and may be transmissive or reflective. An array of lenses and reflective elements may be arranged together in flow cell configurations and/or for signal amplification involving multiple passes through a sample medium. The array elements may be arranged in hexagonal, linear, radial or other packing geometries and may be implemented as a flat or curved panel. The present disclosure is applicable to remote fiber probes and flow cell geometries to measure solids, liquids, gasses and semi-liquid such as slurries.
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公开(公告)号：US11466228B1
公开(公告)日：2022-10-11
申请号：US17078370
申请日：2020-10-23
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Jeremy David Preister , Joseph B. Slater , Michael G. Stidham
IPC: C10M169/04 , C10M105/12 , C10M147/00 , E06B7/16 , C10N50/00
Abstract: An improved method of sealing a window into an aperture in a body uses a lubricant comprising polymer particles suspended in a volatile, low viscosity, low surface tension carrier fluid. The carrier fluid is applied to one or both of the sidewalls of the window and aperture, and the window is pressed into the aperture such that the carrier fluid evaporates, leaving the polymer particles to fill interstitial surface voids, while enabling the sidewall of the window to make intimate mechanical contact with the sidewall of the aperture. While having broader application, the present disclosure finds particular utility in optical characterization techniques based upon the Raman effect and fluorescence probes used in process monitoring and control.
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