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1.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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公开(公告)号：US20240247980A1
公开(公告)日：2024-07-25
申请号：US18159216
申请日：2023-01-25
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Nicholas J. Croglio, JR. , Peter Scott , Douglas H. Beyer
Abstract: The present disclosure includes an optical head for a spectroscopic device configured to produce a beam of light, a reference signal detector, and a signal detector. A mirror reflects the beam of light from the light source toward a multi-sectioned window having a top side and a bottom side. The bottom side includes an AR coating and the top side has a first section including an AR coating and a second section including a beam splitter with transmittance and reflectance. A first beam path for the beam of light is defined by the mirror, the second section of the multi-sectioned window, and the reference signal detector. A second beam path for the beam of light is defined by the mirror, the second section of the multi-sectioned window, a medium contained in the spectroscopic device, an additional mirror, the first section of the multi-sectioned window, and the signal detector.
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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：US20240175804A1
公开(公告)日：2024-05-30
申请号：US18522602
申请日：2023-11-29
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Tobias Meinert , Benjamin Scherer , Marc Winter , Valentin Wittstock
CPC classification number: G01N21/1702 , G01N33/0027 , G01N2021/1704
Abstract: A gas sensor for determining a concentration of at least one gas in a gas mixture includes: at least one intensity modulatable light source; a measuring section, into which the gas mixture to be investigated can be allowed to flow; and an essentially gas-sealed detection cell, wherein the gas sensor is embodied such that light emitted from the light source is radiated into a measuring section, wherein the intensity of the emitted light is modulated with a modulation frequency, which differs from the resonant frequency of a mode of the acoustic resonance of the detection cell by less than 0.5 times, especially less than 0.25 times, the half-width of the mode. Further, a method for determining the concentration of the at least one gas in the gas mixture uses the gas sensor.
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公开(公告)号：US20240230537A1
公开(公告)日：2024-07-11
申请号：US18430155
申请日：2024-02-01
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Carsten Uerpmann , Michael Gordon Stidham
CPC classification number: G01N21/65 , G01J3/0202 , G01J3/0205 , G01N21/8507 , G01N33/62 , G01N2021/8528 , G01N2201/06113
Abstract: One aspect of the present disclosure discloses a probe, including a probe body having a center axis defining a proximal end and a distal end and including an aperture in the distal end; a window affixed in the aperture, wherein the window is substantially optically transparent; and a flange adjoining the proximal end of the probe body, the flange including a sealing surface and a sealing edge, wherein the flange separates an in-process portion of the probe from an ex-process portion of the probe, the in-process portion including at least the probe body, the sealing surface and the sealing edge, where at least the in-process portion of the probe consists essentially of an austenitic stainless steel material. Further aspects include a computer product configured to execute a method employing the probe.
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Patent Agency Ranking
公开(公告)号：US20250052614A1
公开(公告)日：2025-02-13
申请号：US18480812
申请日：2023-10-04
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Joseph Slater
IPC: G01J3/44
Abstract: A reference material for and a method of calibrating at least one Raman spectrometer are disclosed. The reference material includes quantum dots distributed in a transparent condensed phase material such that light emitted by the reference material in response to receiving excitation light having an excitation wavelength provided by the Raman spectrometer(s) has a predetermined spectral intensity distribution in a spectral measurement range of the Raman spectrometer(s). The method includes designing, manufacturing and providing the reference material, determining an emission spectrum of the reference material, and calibrating each Raman spectrometer by determining a reference spectrum of the reference material and by adjusting a determination of spectral intensity values of intensity spectra performed by the Raman spectrometer based on the reference spectrum and the emission spectrum of the reference material.
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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：US20230420914A1
公开(公告)日：2023-12-28
申请号：US17808310
申请日：2022-06-23
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Timothy Norwood
CPC classification number: H01S5/06808 , H01S5/0262
Abstract: The present disclosure includes a method for driving a laser system, wherein the laser system includes: at least one laser diode arranged for light emission; an electronic circuit configured for driving the laser diode by applying an electric drive current; and a power sensor arrangement including at least one power sensor for measuring an optical power output, wherein the method includes: applying and maintaining the electric drive current to the at least one laser diode at a setpoint; determining measurement values of a current optical power output by the power sensor arrangement; comparing the measurement values of the current optical power output with a target optical power output; and adjusting and maintaining the electric drive current at a new setpoint when an absolute value of a difference between the target optical power output and the current optical power output crosses a threshold.
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10.发明公开公开(公告)号：US20240219298A1
公开(公告)日：2024-07-04
申请号：US18532680
申请日：2023-12-07
Applicant: Endress+Hauser Optical Analysis, Inc.
Inventor： Xiang Liu , Kuan-Ting Yeh , Chih-Husan Chang
CPC classification number: G01N21/3103 , G01N21/274
Abstract: A method of spectroscopic analysis includes: collecting a set of calibration spectra for calibration gas samples by scanning a sample range of wavelengths; calculating a first concentration of a target analyte and first concentrations of background components for each calibration spectrum using a multivariant algorithm; modeling an ideal concentration of the target analyte as a function of the first concentrations using a correlative model; collecting a field spectrum for an unknown field gas sample, wherein the field gas sample includes the target analyte and at least some of the background components; calculating a second concentration of the target analyte and second concentrations the background components for the field spectrum using the multivariant algorithm; correcting the second concentration of the target analyte using the correlative model and second concentrations of the background components; and determining a corrected target analyte concentration in the field gas sample based on the corrected second concentration.
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