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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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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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3.发明申请公开(公告)号：US20250052668A1
公开(公告)日：2025-02-13
申请号：US18446801
申请日：2023-08-09
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Joseph B. Slater
Abstract: A calibration material for calibrating a Raman spectrometer includes: a reference material configured to emit a broadband spectrum of luminescence light in response to receiving excitation light; and an additional material exhibiting a distinct Raman band within a spectral measurement range of the Raman spectrometer. A method of calibrating at least one Raman spectrometer using the disclosed calibration material includes: determining emission spectra of the calibration material at multiple temperatures; and calibrating each Raman spectrometer based on a calibration spectrum of the calibration material determined by the Raman spectrometer; determining a temperature of the calibration material by Raman thermometry; and adjusting a determination of spectral intensity values of intensity spectra performed by the respective Raman spectrometer based on the calibration spectrum, the temperature of the calibration material during calibration, and the emission spectra of the calibration material.
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Patent Agency Ranking
公开(公告)号：US20240219231A1
公开(公告)日：2024-07-04
申请号：US18148564
申请日：2022-12-30
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Marc Winter , Joseph B. Slater
CPC classification number: G01J3/0294 , G01J3/0208 , G01J3/0221 , G01J3/024 , G01J3/18 , G02B6/02295
Abstract: A photonic crystal waveguide for conveying light with an input end and an output end to supply for an electromagnetic spectrometer includes: an input end having a convex envelope of a cross-section of the waveguide at the input end, which envelope defines a circular shape or a shape of a regular polygon with n1 corners, wherein n1 is a natural number bigger than 3; an output end having a cross-section that defines a slit shape; and a plurality of photonic crystal fibers, wherein an arrangement of the plurality of photonic crystal fibers defines the cross-sections at the input and output ends.
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公开(公告)号：US20240222836A1
公开(公告)日：2024-07-04
申请号：US18148550
申请日：2022-12-30
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Joseph B. Slater , Marc Winter
Abstract: A waveguide for conveying light with an input end and an output end to supply for an electromagnetic spectrometer includes: an input end having a convex envelope of a cross-section of the waveguide at the input end, which envelope defines a circular shape or a shape of a regular polygon with n1 corners, wherein n1 is a natural number bigger than 3; an output end having a cross-section that defines a slit shape; and a plurality of filaments, wherein an arrangement of the plurality of filaments defines the cross-sections at the input and output ends, wherein each filament includes a core and a reflective coating covering a lateral area of the core, wherein the core includes an optically transparent material.
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公开(公告)号：US20240110874A1
公开(公告)日：2024-04-04
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
CPC classification number: G01N21/65 , G01N2201/12746
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：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：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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