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公开(公告)号：AU2015303971A1
公开(公告)日：2017-02-16
申请号：AU2015303971
申请日：2015-07-09
Applicant: SPECTRASENSORS INC
Inventor： FEITISCH ALFRED , LIU XIANG , CHANG CHIH-HUSAN , HUANG HSU-HUNG
IPC: G01J3/42
Abstract: At least one light source is configured to emit at least one beam into a sample volume of an absorbing medium. In addition, at least one detector is positioned to detect at least a portion of the beam emitted by the at least one light source. Further, at least one beam modification element is positioned between the at least one detector and the at least one light source to selectively change at least one of (i) a power intensity of, or (ii) a shape of the beam emitted by the at least one light source as detected by the at least one detector. A control circuit is coupled to the beam modification element. Related apparatus methods, articles of manufacture, systems, and the like are described.
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22.发明专利
公开(公告)号：CA2967338A1
公开(公告)日：2016-05-19
申请号：CA2967338
申请日：2015-11-11
Applicant: SPECTRASENSORS INC
Inventor： LIU XIANG , FEITISCH ALFRED , HELBLEY KEITH BENJAMIN , TEDESCO JAMES
IPC: G01N21/25 , G01N21/31 , G01N21/3504 , G01N21/39 , G01N21/65
Abstract: Background composition concentration data representative of an actual background composition of a sample gas can be used to model absorption spectroscopy measurement data obtained for a gas sample and to correct an analysis of the absorption spectroscopy data (e.g. for structural interference and collisional broadening) based on the modeling.
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公开(公告)号：AU2011318585B2
公开(公告)日：2015-08-06
申请号：AU2011318585
申请日：2011-02-15
Applicant: SPECTRASENSORS INC
Inventor： FEITISCH ALFRED , KELLER LUTZ , LIU XIANG , SCHREMPEL MATHIAS , HELBLEY KEITH BENJAMIN
Abstract: A valid state of an analytical system that includes a light source (102) and a detector (106) can be verified by determining that deviation of first light intensity data quantifying a first intensity of light received at the detector from the light source after the light has passed at least once through each of a reference gas in a validation cell (114) and a zero gas from a stored data set does not exceed a pre-defined threshold deviation. The stored data set can represent at least one previous measurement collected during a previous instrument validation process performed on the analytical system. The reference gas can include a known amount of an analyte. A concentration of the analyte in a sample gas in a measurement cell (112) can be determined by correcting second light intensity data quantifying a second intensity of the light received at the detector after the light passes at least once through each of the reference gas in the validation cell and a sample gas containing an unknown concentration of the analyte compound. Related systems, methods, and articles of manufacture are also described.
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公开(公告)号：AU2008240146B2
公开(公告)日：2013-10-17
申请号：AU2008240146
申请日：2008-04-11
Applicant: SPECTRASENSORS INC
Inventor： FEITISCH ALFRED , ZHOU XIN , LIU XIANG , SANGER GREGORY M
IPC: G01N21/35
Abstract: A differential absorption spectrum for a reactive gas in a gas mixture can be generated for sample absorption data by subtracting background absorption data set from the sample absorption data. The background absorption data can be characteristic of absorption characteristics of the background composition in a laser light scan range that includes a target wavelength. The differential absorption spectrum can be converted to a measured concentration of the reactive gas using calibration data. A determination can be made whether the background composition has substantially changed relative to the background absorption data, and new background absorption data can be used if the background composition has substantially changed. Related systems, apparatus, methods, and/or articles are also described..
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公开(公告)号：AU2008224897B2
公开(公告)日：2013-08-22
申请号：AU2008224897
申请日：2008-03-14
Applicant: SPECTRASENSORS INC
Inventor： SANGER GREGORY M , FEITISCH ALFRED , ZHOU XIN , LIU XIANG
Abstract: An apparatus for detecting a concentration of a trace target gas in a sample gas comprises a light source (110), for example a tunable diode laser, for emitting light at a wavelength corresponding to an absorption line of the target gas and means (105) operatively connected to said light source for modulating the wavelength of the emitted light, a detector (125) positioned to detect the intensity of light emitted from the light source that has passed through the sample gas at a multiple of the modulation frequency of the light source, for example second harmonic detection, a pressure sensor (120) for detecting the pressure of the sample gas, and a control unit (135) coupled to the detector, the pressure sensor, and the light source, said control unit being arranged to adjust the modulation amplitude' of the light source based on the detected pressure.
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Patent Agency Ranking
公开(公告)号：CA2829946A1
公开(公告)日：2012-09-20
申请号：CA2829946
申请日：2012-03-14
Applicant: SPECTRASENSORS INC
Inventor： NEUBAUER GABI , FEITISCH ALFRED , SCHREMPEL MATHIAS
Abstract: A first contact surface ( 310 ) of a semiconductor laser chip ( 302 ) 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 of a metallic barrier layer to be applied to the first contact surface ( 310 ). A metallic barrier layer having the barrier layer thickness can be applied to the first contact surface, and the semiconductor laser chip ( 302 ) can be soldered to a carrier mounting along the first contact surface ( 310 ) using a solder composition ( 306 ) by heating the soldering composition to less than a threshold temperature at which dissolution of the metallic barrier layer into the soldering composition occurs. Related systems, methods, articles of manufacture, and the like are also described.
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公开(公告)号：CA2698114A1
公开(公告)日：2009-03-05
申请号：CA2698114
申请日：2008-08-29
Applicant: SPECTRASENSORS INC
Inventor： MOSS JOHN , FEITISCH ALFRED , ZHOU XIN , LIU XIANG , KWAN ALEX , BAUM MARC M
Abstract: Scrubber media for reactive gases, that can include but are not necessarily limited to hydrogen chloride (HCl), hydrogen sulfide (H2S), hydrogen fluoride (HF), and ammonia (NH3), can include reactive particles, potentially as small as nano-scale, that can optionally be suspended on macro-scale carrier particles. Reactive gases can be converted to non-volatile compounds by being passed through a bed of such scrubber media. Such scrubber media can be used to remove reactive gases from gas mixtures. Potential applications include differential absorption spectroscopy, air pollutant emission controls, and the like. Methods of preparing scrubber media are also described.
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公开(公告)号：CA2683802A1
公开(公告)日：2008-10-23
申请号：CA2683802
申请日：2008-04-11
Applicant: SPECTRASENSORS INC
Inventor： FEITISCH ALFRED , SANGER GREGORY M , LIU XIANG , ZHOU XIN
IPC: G01N21/35
Abstract: A differential absorption spectrum for a reactive gas in a gas mixture ca n be generated for sample absorption data by subtracting background absorpti on data set from the sample absorption data. The background absorption data can be characteristic of absorption characteristics of the background compos ition in a laser light scan range that includes a target wavelength. The dif ferential absorption spectrum can be converted to a measured concentration o f the reactive gas using calibration data. A determination can be made wheth er the background composition has substantially changed relative to the back ground absorption data, and new background absorption data can be used if th e background composition has substantially changed. Related systems, apparat us, methods, and/or articles are also described..
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公开(公告)号：AU2008240146A1
公开(公告)日：2008-10-23
申请号：AU2008240146
申请日：2008-04-11
Applicant: SPECTRASENSORS INC
Inventor： LIU XIANG , FEITISCH ALFRED , SANGER GREGORY M , ZHOU XIN
IPC: G01N21/35
Abstract: A differential absorption spectrum for a reactive gas in a gas mixture can be generated for sample absorption data by subtracting background absorption data set from the sample absorption data. The background absorption data can be characteristic of absorption characteristics of the background composition in a laser light scan range that includes a target wavelength. The differential absorption spectrum can be converted to a measured concentration of the reactive gas using calibration data. A determination can be made whether the background composition has substantially changed relative to the background absorption data, and new background absorption data can be used if the background composition has substantially changed. Related systems, apparatus, methods, and/or articles are also described.
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公开(公告)号：HUE029870T2
公开(公告)日：2017-04-28
申请号：HUE08745688
申请日：2008-04-11
Applicant: SPECTRASENSORS INC
Inventor： ZHOU XIN , LIU XIANG , FEITISCH ALFRED , SANGER GREGORY M
IPC: G01N21/39
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