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公开(公告)号：US4274063A
公开(公告)日：1981-06-16
申请号：US899573
申请日：1978-04-24
Applicant: Ali Javan
Inventor： Ali Javan
CPC classification number: G01J3/108
Abstract: A novel enhanced infrared spectral light source employing gas discharge, to be designated hereafter as EISLS, and a detection system using such an EISLS lamp for gas detection of a given molecular gas, the lamp adapted to produce spectral radiation at selected, sharply defined, spontaneous emission frequencies in the infrared corresponding to an absorbing molecular rotation-vibration transition band of the given gas. According to one feature, a gas mixture within the chamber provides an excitable buffer gas and a quantity of the given gas, the buffer gas having a state excitable by the excitation means and matched to the given gas in the manner that energy from the buffer gas state can transfer via collisions to the given gas and excite the upper levels of the absorbing transition band, whereby resultant radiative decay of the upper levels to the lower levels of the absorbing transition band produces the desired selected spontaneous emissions from the given gas, enhanced by the buffer gas. The given gas may be placed in the chamber or may be produced by interactions of other gases and the electrical discharge within the chamber.According to another feature, in such an EISLS spectroscopic lamp which produces spontaneous emissions corresponding to an absorbing band and other undesired spontaneous emissions as a result of excitation of other levels, the parameters being selected to make the desired emissions have a decay time long relative to the decay time of the undesired emissions, means are provided to interrupt the excitation means periodically and to delay the utilization of emission from the lamp a time following the instant of each interruption to the period when the other levels and associated emissions are decayed and the given gas continues to emit at the desired transition.According to another feature an EISLS spectroscopic lamp which produces sharply defined spontaneous emissions corresponding to an absorbing band of a given gas is arranged to direct its emission along a detection path in which the given gas may appear, and is combined with means to provide a modulated magnetic field either in the detection path to cause modulation of the absorbing transitions of paramagnetic gas to be detected or in paramagnetic emitting gas in the lamp to cause frequency modulation of the emitted spectral radiation, and an electronic detection means is provided, responsive to the resultant modulated intensity reaching the detector, to enhance the detection sensitivity.
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公开(公告)号：US3702397A
公开(公告)日：1972-11-07
申请号：US3702397D
申请日：1971-02-16
Applicant: NAT RES DEV
Inventor： FIRTH JACK GRAHAM , JONES THOMAS ALWYN
Abstract: Means for detecting a component of an atmosphere comprises a source of radiation and a detector arranged so as to receive and be responsive to radiation through said atmosphere from the source, the intensity of the radiation from the source increasing rapidly with respect to wavelength just below the peak of an absorption band of the chosen component, and the response of the detector decreasing rapidly with respect to wavelength just above the peak of the absorption band. Selection of source, detector and radiation filters allows detection of one component, such as methane or carbon monoxide, without falsification of the result by another component such as carbon dioxide.
Abstract translation: 用于检测大气分量的装置包括辐射源和检测器，其布置成接收并响应于从源极通过所述大气的辐射，来自源的辐射的强度相对于刚好低于 所选择的分量的吸收带的峰值，并且检测器的响应相对于刚好在吸收带的峰值上方的波长快速降低。 源，检测器和辐射过滤器的选择允许检测一种成分，如甲烷或一氧化碳，而不会由另一种成分如二氧化碳造成的结果伪造。
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公开(公告)号：US3694624A
公开(公告)日：1972-09-26
申请号：US3694624D
申请日：1970-06-24
Applicant: BECKMAN INSTRUMENTS GMBH
Inventor： BUCHTA EBERHARD
CPC classification number: H05B3/265 , G01J3/108 , G01K7/183 , H05B2203/032
Abstract: An infrared radiator for use in infrared analyzers includes a ceramic platelet having a front surface and a rear surface. A thin heating resistance layer is deposited on the front surface. A thin temperature measuring layer deposited on the rear surface provides a signal proportional to the platelet temperature. The signal is amplified and supplied to a sensing and control device which regulates the electrical power supplied to the resistance layer from a variable power supply whereby the platelet is maintained at a constant temperature. The platelet may be enclosed in a housing having a radiant energy transmitting window opposite the resistance layer. Electrical leads connected to the resistance layer and temperature measuring act to support the platelet in the housing.
Abstract translation: 用于红外分析仪的红外线辐射器包括具有前表面和后表面的陶瓷片。 在前表面上沉积薄的耐热层。 沉积在后表面上的薄的温度测量层提供与血小板温度成比例的信号。 信号被放大并提供给感测和控制装置，该感测和控制装置调节从可变电源供应到电阻层的电力，由此血小板保持在恒定温度。 血小板可以封闭在具有与电阻层相对的辐射能量透射窗口的壳体中。 连接到电阻层的电引线和温度测量作用来支持壳体中的血小板。
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公开(公告)号：US3651322A
公开(公告)日：1972-03-21
申请号：US3651322D
申请日：1970-05-06
Applicant: SPECTRAMETRICS INC
Inventor： ELLIOTT WILLIAM G
CPC classification number: G01J3/108
Abstract: A gas analysis device comprising a housing with a heated element and a gas therein as the source of radiation and a detector for the emitted radiation. Preferably, a chopper or other means are employed to permit the emission from the element and the gas to fall alternately on the detector. In an alternate embodiment, the gas in the source is of known emission characteristics and a gas to be analyzed is interposed between the source and the detector.
Abstract translation: 一种气体分析装置，包括具有加热元件的壳体和其中作为辐射源的气体和用于发射辐射的检测器。 优选地，采用斩波器或其它装置来允许元件和气体的发射交替地落在检测器上。 在替代实施例中，源中的气体具有已知的发射特性，待分析的气体介于源和检测器之间。
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公开(公告)号：US2741691A
公开(公告)日：1956-04-10
申请号：US27219152
申请日：1952-02-18
Applicant: SOCONY MOBIL OIL CO INC
Inventor： LEE JAMES H
CPC classification number: G02B17/02 , G01J3/108 , G01N21/255
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Patent Agency Ranking
公开(公告)号：US12111210B2
公开(公告)日：2024-10-08
申请号：US17859912
申请日：2022-07-07
Applicant: Apple Inc.
Inventor： Mark Alan Arbore , Thomas C. Greening , Yongming Tu
IPC: G01J3/02 , G01J3/10 , G01J3/18 , G01J3/32 , G01J3/45 , G02B6/293 , G02B6/42 , G02B27/10 , G02F1/21
CPC classification number: G01J3/0297 , G01J3/10 , G01J3/108 , G01J3/1809 , G01J3/32 , G01J3/45 , G02B6/2938 , G02B6/4215 , G02B27/10 , G01J2003/102 , G02F1/212
Abstract: Configurations for light source modules and methods for mitigating coherent noise are disclosed. The light source modules may include multiple light source sets, each of which may include multiple light sources. The light emitted by the light sources may be different wavelengths or the same wavelength depending on whether the light source module is providing redundancy of light sources, increased power, coherent noise mitigation, and/or detector mitigation. In some examples, the light source may emit light to a coupler or a multiplexer, which may then be transmitted to one or more multiplexers. In some examples, the light source modules provide one light output and in other examples, the light source modules provide two light outputs. The light source modules may provide light with approximately zero loss and the wavelengths of light may be close enough to spectroscopically equivalent respect to a sample and far enough apart to provide coherent noise mitigation.
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公开(公告)号：US12104957B2
公开(公告)日：2024-10-01
申请号：US17620408
申请日：2020-06-25
Applicant: Protea Ltd
Inventor： Chris Daw , Robin Hutchinson
CPC classification number: G01J3/427 , G01J3/0218 , G01J3/108 , G01J3/12 , G01N21/33 , G01N21/3504 , G01N33/0037 , G01N33/0042 , G01J2003/102 , G01J2003/1213 , G01N2021/3155 , G01N2201/08
Abstract: The invention relates to a photometer (30) for analysing the composition of a sample gas. The photometer comprises an infra-red (IR) source (20) configured to direct a first plurality of pulses (40) of IR radiation through the sample gas to an IR detector (26), at least two of the first plurality of pulses being of different wavelength. The photometer further comprises an ultraviolet (UV) source (32) configured to generate a second plurality of pulses (38) of UV radiation for conveyance to a UV detector (36), at least two of the second plurality of pulses being of different wavelength. A path selection arrangement (22, 42-50) is configured to selectively convey different ones of the second plurality of pulses (38) to one of the sample gas and the UV detector (36). The photometer further comprises processing circuitry coupled to the IR source (20), the UV source (32), the IR detector (26), the UV detector (36) and the path selection arrangement (22, 42-50). The processing circuitry is configured to (i) select the wavelength to be used for a given UV pulse of the second plurality of pulses (38), (ii) receive a plurality of detection signals from each of the IR detector (26) and the UV detector (36) and (iii) based on the detection signals, determine a concentration of at least one component of the sample gas. A method for analysing the composition of a sample gas is also disclosed.
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公开(公告)号：US12099003B2
公开(公告)日：2024-09-24
申请号：US18312241
申请日：2023-05-04
Applicant: VIAVI Solutions Inc.
Inventor： ChangMeng Hsiung , Christopher G. Pederson , Marc K. Von Gunten , Lan Sun
IPC: G01N21/35 , G01J3/10 , G01N21/25 , G01N21/359 , G06F18/2411 , G06F18/2433 , G06N20/00 , G06V20/69 , G16C20/20 , G16C20/70
CPC classification number: G01N21/35 , G01J3/108 , G01N21/253 , G01N21/359 , G06F18/2411 , G06F18/2433 , G06N20/00 , G06V20/698 , G16C20/20 , G16C20/70 , G01N2201/129
Abstract: A device may receive information identifying results of a set of spectroscopic measurements of a training set of known samples and a validation set of known samples. The device may generate a classification model based on the information identifying the results of the set of spectroscopic measurements, wherein the classification model includes at least one class relating to a material of interest for a spectroscopic determination, and wherein the classification model includes a no-match class relating to at least one of at least one material that is not of interest or a baseline spectroscopic measurement. The device may receive information identifying a particular result of a particular spectroscopic measurement of an unknown sample. The device may determine whether the unknown sample is included in the no-match class using the classification model. The device may provide output indicating whether the unknown sample is included in the no-match class.
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219.发明公开公开(公告)号：US20240264000A1
公开(公告)日：2024-08-08
申请号：US18563432
申请日：2021-05-28
Applicant: NEC CORPORATION
Inventor： Chisato FUNAYAMA , Masato TSUKADA
CPC classification number: G01J3/52 , G01J3/108 , G01J3/42 , G01J3/50 , G06T7/90 , G01J2003/425 , G06V40/10
Abstract: A chart includes: a substrate; a first skin reflection patch part that is formed on the substrate and that simulates reflection of near-infrared rays of a predetermined wavelength, in a skin of a living body of a first skin color; and a second skin reflection patch part that is formed on the substrate and that simulates reflection of the near-infrared rays of the predetermined wavelength, in the skin of the living body of a second skin color that is different from the first skin color. According to such a chart, it is possible to properly determine whether or not an imaging environment of an image is suitable for biometric authentication.
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公开(公告)号：US12050128B2
公开(公告)日：2024-07-30
申请号：US17755550
申请日：2020-10-20
Applicant: YOKOGAWA ELECTRIC CORPORATION
Inventor： Kodai Murayama , Toshiyuki Saruya , Fumie Watanabe , Risa Hara
CPC classification number: G01J3/108 , G01J3/0294 , G01N21/658 , G01J3/28 , G01J2003/2879
Abstract: A spectroscopic analysis device (1) according to the present disclosure includes a controller (40) that acquires refractive index information on a sample (S) based on information on a first spectroscopic spectrum in a first wavelength band in which only a resonance spectrum of surface plasmon occurs within a spectroscopic spectrum, determines, based on the acquired refractive index information, an incidence angle of irradiation light (L1) irradiated by an irradiator (10) with respect to a membrane (M) such that the peak wavelength of the resonance spectrum and the peak wavelength of an absorption spectrum of the sample (S) match in a second spectroscopic spectrum in a second wavelength band in which the resonance spectrum and the absorption spectrum occur within the spectroscopic spectrum, and analyzes the state of the sample (S) from information on the second spectroscopic spectrum obtained based on the determined incidence angle.
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