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公开(公告)号：AU2007238517A1
公开(公告)日：2007-10-25
申请号：AU2007238517
申请日：2007-04-19
Applicant: SPECTRASENSORS INC
Inventor： ZHOU XIN
Abstract: Low concentrations of water vapor within a background of one or more olefin gases may be detected and quantified using a differential absorption spectrometer. A dehydrated sample of the gas is used as a background sample whose absorption spectrum allows elimination of absorption features not due to water vapor in the gas. Absorption spectra may recorded using tunable diode lasers as the light source. These lasers may have a wavelength bandwidth that is narrower than the water vapor absorption feature used for the differential absorption spectral analysis.
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公开(公告)号：US11754539B2
公开(公告)日：2023-09-12
申请号：US16842849
申请日：2020-04-08
Applicant: SpectraSensors, Inc.
Inventor： Kevin Ludlum , Marc Winter , Benjamin Scherer , Xiang Liu
CPC classification number: G01N33/0006 , G01N21/31 , G01N33/0036 , G06N3/08 , G06N20/00
Abstract: The present disclosure relates to a computer-implemented method for forecasting calibration spectra including a step of providing a machine learning model trained using historical calibration data corresponding to different gas species at different pressures. The computer-implemented method also includes steps of performing a calibration scan of one gas species at one pressure using an analyzer and generating calibration curves for the analyzer corresponding to one or multiple gas species at multiple pressures using the machine learning model and the calibration scan. Thereafter, a spectrum is obtained using the analyzer, and a concentration measurement is generated using the spectrum and at least one of the calibration curves.
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公开(公告)号：US20210318280A1
公开(公告)日：2021-10-14
申请号：US16842849
申请日：2020-04-08
Applicant: SpectraSensors, Inc.
Inventor： Kevin Ludlum , Marc Winter , Benjamin Scherer , Xiang Liu
Abstract: The present disclosure relates to a computer-implemented method for forecasting calibration spectra including a step of providing a machine learning model trained using historical calibration data corresponding to different gas species at different pressures. The computer-implemented method also includes steps of performing a calibration scan of one gas species at one pressure using an analyzer and generating calibration curves for the analyzer corresponding to one or multiple gas species at multiple pressures using the machine learning model and the calibration scan. Thereafter, a spectrum is obtained using the analyzer, and a concentration measurement is generated using the spectrum and at least one of the calibration curves.
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公开(公告)号：US20210018433A1
公开(公告)日：2021-01-21
申请号：US16511429
申请日：2019-07-15
Applicant: SpectraSensors, Inc.
Inventor： Xiang Liu , Alfred Feitisch , Gary Yeh , Chih-Hsuan Chang
Abstract: A method for implementation by a laser spectrometer is provided. The method includes first scanning, by a control unit using a first set of laser spectrometer operating parameters, a first wavelength range by adjusting a wavelength of light of a beam emitted by a laser light source and passing through a sample gas. The first wavelength range encompasses a first spectral feature corresponding to a first constituent. The method also includes at least one second scanning, by the control unit using a second set of laser spectrometer operating parameters, a second wavelength range by adjusting the wavelength of light emitted from the laser light source and passing through the sample gas. The second wavelength range has a second spectral feature corresponding to at least one second constituent. The control unit also determines a first concentration of the first constituent and a second concentration of the at least one second constituent.
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公开(公告)号：US20200185880A1
公开(公告)日：2020-06-11
申请号：US16259172
申请日：2019-01-28
Applicant: SpectraSensors, Inc.
Inventor： Alfred Feitisch , Gabi Neubauer , Mathias Schrempel
Abstract: A first contact surface of a semiconductor laser chip can be formed to a target surface roughness selected to have a maximum peak to valley height that is substantially smaller than a barrier layer thickness. A barrier layer that includes a non-metallic, electrically-conducting compound and that has the barrier layer thickness can be applied to the first contact surface, and the semiconductor laser chip can be soldered to a carrier mounting along the first contact surface using a solder composition by heating the soldering composition to less than a threshold temperature at which dissolution of the barrier layer into the soldering composition occurs. Related systems, methods, articles of manufacture, and the like are also described.
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Patent Agency Ranking
公开(公告)号：US20190162597A9
公开(公告)日：2019-05-30
申请号：US14494482
申请日：2014-09-23
Applicant: SpectraSensors, Inc.
Inventor： Lutz Keller , Alfred Feitisch , Peter Scott , Mathias Schrempel , Nathan St. John
Abstract: A spectrometer cell can include a spacer, at least one end cap, and at least one mirror with a reflective surface. The end cap can be positioned proximate to a first contact end of the spacer such that the end cap and spacer at least partially enclose an internal volume of the spectrometer cell. The mirror can be secured in place by a mechanical attachment that includes attachment materials that are chemically inert to at least one reactive gas compound. The mechanical attachment can hold an optical axis of the reflective surface in a fixed orientation relative to other components of the spectrometer cell and or a spectrometer device that comprises the spectrometer cell. The mirror can optionally be constructed of a material such as stainless steel, ceramic, or the like. Related methods, articles of manufacture, systems, and the like are described.
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公开(公告)号：US09816860B2
公开(公告)日：2017-11-14
申请号：US14466819
申请日：2014-08-22
Applicant: SpectraSensors, Inc.
Inventor： Alfred Feitisch , Xiang Liu , Keith Benjamin Helbley , Douglas Beyer
CPC classification number: G01J3/0205 , G01J3/0237 , G01J3/027 , G01J3/0278 , G01J3/0291 , G01J3/42 , G01J2003/421 , G01N21/31 , G01N2201/06113 , G01N2201/062
Abstract: A spectrometer includes a light source that emits a beam into a sample volume comprising an absorbing medium. Thereafter, at least one detector detects at least a portion of the beam emitted by the light source. It is later determined, based on the detected at least a portion of the beam and by a controller, that a position and/or an angle of the beam should be changed. The beam emitted by the light source is then actively steered by an actuation element under control of the controller. In addition, a concentration of the absorbing media can be quantified or otherwise calculated (using the controller or optionally a different processor that can be local or remote). The actuation element(s) can be coupled to one or more of the light source, a detector or detectors, and a reflector or reflectors intermediate the light source and the detector(s).
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公开(公告)号：US20170317468A1
公开(公告)日：2017-11-02
申请号：US15652177
申请日：2017-07-17
Applicant: SpectraSensors, Inc.
Inventor： Alfred Feitisch , Gabi Neubauer , Mathias Schrempel
CPC classification number: H01S5/02272 , H01L24/03 , H01L24/05 , H01L24/29 , H01L24/32 , H01L24/83 , H01L2224/0383 , H01L2224/04026 , H01L2224/05573 , H01L2224/05624 , H01L2224/05663 , H01L2224/05664 , H01L2224/05666 , H01L2224/05669 , H01L2224/0567 , H01L2224/0568 , H01L2224/05681 , H01L2224/05684 , H01L2224/05686 , H01L2224/29109 , H01L2224/29111 , H01L2224/29139 , H01L2224/29144 , H01L2224/32245 , H01L2224/83801 , H01L2924/12042 , H01L2924/15747 , H01S5/02212 , H01S5/0425 , H01L2924/04941 , H01L2924/01022 , H01L2924/053 , H01L2924/049 , H01L2924/00014 , H01L2924/01032 , H01L2924/01014 , H01L2924/014 , H01L2924/0105 , H01L2924/01029 , H01L2924/01082 , H01L2924/00
Abstract: A first contact surface of a semiconductor laser chip can be formed to a target surface roughness selected to have a maximum peak to valley height that is substantially smaller than a barrier layer thickness. A barrier layer that includes a non-metallic, electrically-conducting compound and that has the barrier layer thickness can be applied to the first contact surface, and the semiconductor laser chip can be soldered to a carrier mounting along the first contact surface using a solder composition by heating the soldering composition to less than a threshold temperature at which dissolution of the barrier layer into the soldering composition occurs. Related systems, methods, articles of manufacture, and the like are also described.
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79.发明授权公开(公告)号：US09360415B2
公开(公告)日：2016-06-07
申请号：US14263942
申请日：2014-04-28
Applicant: SpectraSensors, Inc.
Inventor： Xiang Liu , John Lewison , Wenhai Ji , Alfred Feitisch
IPC: G01N21/00 , G01N21/27 , G01N21/39 , G01N21/3504 , G01J3/28 , G01J3/42 , G01N21/03 , G01N21/31 , G01N21/3518
CPC classification number: G01N21/274 , G01J3/28 , G01J3/42 , G01N21/031 , G01N21/31 , G01N21/3504 , G01N21/3518 , G01N21/39 , G01N2021/399
Abstract: A reference harmonic absorption curve of a laser absorption spectrometer can have a reference curve shape derived from a reference signal generated by the detector in response to light passing from the laser light source through a reference gas or gas mixture. The reference gas or gas mixture can include one or more of a target analyte and a background gas expected to be present during analysis of the target analyte. A test harmonic absorption curve having a test curve shape is compared with the reference harmonic absorption curve to detect a difference between the test curve shape and the reference curve shape. Operating and/or analytical parameters of the laser absorption spectrometer are adjusted to correct the test curve shape to reduce the difference between the test curve shape and the reference curve shape.
Abstract translation: 激光吸收光谱仪的参考谐波吸收曲线可以具有根据由检测器响应于从激光源通过参考气体或气体混合物的光而产生的参考信号导出的参考曲线形状。 参考气体或气体混合物可以包括目标分析物和预期在目标分析物的分析期间存在的背景气体中的一种或多种。 将具有测试曲线形状的测试谐波吸收曲线与参考谐波吸收曲线进行比较，以检测测试曲线形状与参考曲线形状之间的差异。 调整激光吸收光谱仪的操作和/或分析参数以校正测试曲线形状，以减小测试曲线形状与参考曲线形状之间的差异。
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公开(公告)号：US20160084710A1
公开(公告)日：2016-03-24
申请号：US14494482
申请日：2014-09-23
Applicant: SpectraSensors, Inc.
Inventor： Lutz Keller , Alfred Feitisch , Peter Scott , Mathias Schrempel , Nathan St. John
CPC classification number: G01N21/031 , G01N2021/399
Abstract: A spectrometer cell can include a spacer, at least one end cap, and at least one mirror with a reflective surface. The end cap can be positioned proximate to a first contact end of the spacer such that the end cap and spacer at least partially enclose an internal volume of the spectrometer cell. The mirror can be secured in place by a mechanical attachment that includes attachment materials that are chemically inert to at least one reactive gas compound. The mechanical attachment can hold an optical axis of the reflective surface in a fixed orientation relative to other components of the spectrometer cell and or a spectrometer device that comprises the spectrometer cell. The mirror can optionally be constructed of a material such as stainless steel, ceramic, or the like. Related methods, articles of manufacture, systems, and the like are described.
Abstract translation: 光谱仪单元可以包括间隔物，至少一个端盖和至少一个具有反射表面的反射镜。 端盖可以定位成靠近隔离物的第一接触端，使得端盖和间隔件至少部分地包围光谱仪单元的内部体积。 镜子可以通过机械附件固定在适当的位置，该机械附件包括对至少一种反应性气体化合物具有化学惰性的附着材料。 机械附件可以将反射表面的光轴相对于分光计单元的其他部件和包括光谱仪单元的光谱仪装置固定在一定方向。 镜子可以任意地由诸如不锈钢，陶瓷等的材料构成。 描述了相关方法，制品，系统等。
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