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公开(公告)号：US12085500B2
公开(公告)日：2024-09-10
申请号：US18111740
申请日：2023-02-20
Applicant: Apple Inc.
Inventor： Miikka M. Kangas , Mark Alan Arbore , David I. Simon , Michael J. Bishop , James W. Hillendahl , Robert Chen
IPC: G01N21/27 , G01J3/02 , G01J3/32 , G01J3/36 , G01J3/42 , G01J3/433 , G01J3/447 , G01N21/21 , G01N21/35 , G01N21/47 , G01N21/49
CPC classification number: G01N21/276 , G01J3/0286 , G01J3/32 , G01J3/36 , G01J3/42 , G01J3/433 , G01J3/447 , G01N21/35 , G01N21/474 , G01N21/4785 , G01N21/21 , G01N2021/4709 , G01N2021/4778 , G01N21/49 , G01N2201/0221 , G01N2201/12707 , G01N2201/12723
Abstract: This relates to systems and methods for measuring a concentration and type of substance in a sample at a sampling interface. The systems can include a light source, optics, one or more modulators, a reference, a detector, and a controller. The systems and methods disclosed can be capable of accounting for drift originating from the light source, one or more optics, and the detector by sharing one or more components between different measurement light paths. Additionally, the systems can be capable of differentiating between different types of drift and eliminating erroneous measurements due to stray light with the placement of one or more modulators between the light source and the sample or reference. Furthermore, the systems can be capable of detecting the substance along various locations and depths within the sample by mapping a detector pixel and a microoptics to the location and depth in the sample.
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公开(公告)号：US20230349761A1
公开(公告)日：2023-11-02
申请号：US18141647
申请日：2023-05-01
Inventor： Ian Robert Coddington , Nathan Reynolds Newbury , Jean-Daniel Deschenes , Fabrizio Raphael Giorgetta , Esther Baumann
CPC classification number: G01J3/433 , G01J3/45 , G01J3/0248 , G01J2003/4332 , G01J2003/2836
Abstract: Embodiments of the present invention relate to apparatus and methods for dual comb spectroscopy with deterministic stepping and scanning of temporal pulse offset. In one embodiment, the present invention relates to a novel dual-comb spectroscopy including mode locked robust Er-combs and digital phase-locking electronics for step scanning between the two frequency combs and applicable to any phase-locked dual-comb system. The tight phase control of the DCS source allows for the control of temporal offset between the two comb pulses during measurements.
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公开(公告)号：US20180149520A1
公开(公告)日：2018-05-31
申请号：US15823421
申请日：2017-11-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Naoki Kohara
CPC classification number: G01J3/0297 , G01J3/0208 , G01J3/0218 , G01J3/0224 , G01J3/0262 , G01J3/433 , G01J3/44 , G01N21/65 , G01N2021/655 , G01N2021/656 , H01S3/0078 , H01S3/1086 , H01S3/2391
Abstract: A noise reduction apparatus includes a first delaying/combining unit configured to output first and second pulse light beams, and a second delaying/combining unit configured to branch the first pulse light beam into two pulse light beams to output third and fourth pulse light beams and branch the second pulse light beam into two pulse light beams to output fifth and sixth pulse light beams.
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公开(公告)号：US09869633B2
公开(公告)日：2018-01-16
申请号：US15451714
申请日：2017-03-07
Applicant: Daylight Solutions Inc.
Inventor： Benjamin Bird , Miles James Weida , Jeremy Rowlette
CPC classification number: G01N21/35 , G01J3/10 , G01J3/108 , G01J3/28 , G01J3/2823 , G01J3/42 , G01J3/433 , G01J5/52 , G01J2003/104 , G01J2003/2826 , G01J2003/4332 , G01N21/3563 , G01N21/39 , G01N33/50 , G01N2201/12
Abstract: Spectrally analyzing an unknown sample (10A) for the existence of a characteristic includes (i) analyzing a first known sample (10C) having the characteristic and a second known sample (10D) not having the characteristic to identify less than fifty diagnostic spectral features, each diagnostic spectral feature being present at a different diagnostic wavelength in a mid-infrared spectral region; (ii) directing a plurality of interrogation beams (16) at the unknown sample (10A), each of the interrogation beams (16) having a different interrogation wavelength, and each interrogation wavelength corresponding to a different one of the diagnostic wavelengths; (iii) acquiring a plurality of separate output images (245) of the unknown sample (10A), wherein each of the output images (245) is acquired while the unknown sample is illuminated by a different one of the interrogation beams (16); and (iv) analyzing less than fifty output images (245) with a control system (28) to determine whether the characteristic is present in the unknown sample (10A).
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公开(公告)号：US09846117B2
公开(公告)日：2017-12-19
申请号：US12814315
申请日：2010-06-11
Applicant: Xin Zhou , Xiang Liu , Alfred Feitisch
Inventor： Xin Zhou , Xiang Liu , Alfred Feitisch
CPC classification number: G01N21/39 , G01J3/433 , G01J3/4338 , G01J2003/4332 , G01J2003/4334 , G01N21/031 , G01N21/05 , G01N21/274 , G01N21/3504 , G01N2021/354 , G01N2021/399
Abstract: Detector data representative of an intensity of light that impinges on a detector after being emitted from a light source and passing through a gas over a path length can be analyzed using a first analysis method to obtain a first calculation of an analyte concentration in the volume of gas and a second analysis method to obtain a second calculation of the analyte concentration. The second calculation can be promoted as the analyte concentration upon determining that the analyte concentration is out of a first target range for the first analysis method.
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Patent Agency Ranking
公开(公告)号：US09752931B2
公开(公告)日：2017-09-05
申请号：US14488608
申请日：2014-09-17
Applicant: SICK AG
Inventor： Torsten Waldmann , Rolf Disch
CPC classification number: G01J3/0205 , G01J3/0235 , G01J3/12 , G01J3/26 , G01J3/433 , G01J2003/1282 , G01N21/3504 , G01N33/0062
Abstract: A spectrometer (10) for gas analysis is provided, the spectrometer comprising a measurement cell (28) having a gas to be investigated, a light source (12) for the transmission of light (14) into the measurement cell (28) on a light path (16), a filter arrangement (22) having a Fabry-Perot filter (24a-c) in the light path (16), in order to set frequency properties of the light (14) by means of a transmission spectrum of the filter arrangement (22), as well as a detector (36, 38) which measures the absorption of the light (14) by the gas (30) in the measurement cell (28). In this connection the filter arrangement (22) has a plurality of Fabry-Perot filters (24a-c) arranged behind one another in the light path (14) and a control unit (44) for the filter arrangement (22) is provided in order to change the transmission spectrum by setting at least one of the Fabry-Perot filters (24a-c).
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公开(公告)号：US20170211977A1
公开(公告)日：2017-07-27
申请号：US15186682
申请日：2016-06-20
Applicant: Massachusetts Institute of Technology
Inventor： Thomas H. Jeys , William D. Herzog , Brian G. Saar , Alexander M. Stolyarov , Ryan Sullenberger , David Crompton , Shawn Michael Redmond
CPC classification number: G01J3/433 , G01J3/108 , G01J3/2823 , G01J3/447 , G01N21/1717 , G01N21/636 , G01N2021/1725
Abstract: A device, and corresponding method, can include a pump light source configured to be modulated at a pump modulation and to irradiate a target specimen. The device can also include a probe light source arranged to generate a speckle pattern from the target specimen, as well as a sensor configured to detect changes in at least one of position and intensity of one or more speckle lobes of the speckle pattern having correlation with the pump modulation. The device and method can be used for non-contact monitoring and remote sensing of surfaces, gases, liquids, particles, and other target materials by analyzing speckle pattern changes as a function of pump light irradiation. Advantages can include much higher sensitivity than existing methods; the ability to use visible probe wavelengths for uncooled, low-cost visible detectors with high spatial resolution; and the ability to obtain target material properties without detecting infrared light.
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公开(公告)号：US09709487B2
公开(公告)日：2017-07-18
申请号：US14601729
申请日：2015-01-21
Applicant: Siemens Aktiengesellschaft
Inventor： Ralf Bitter , Thomas Hankiewicz , Christoph Wolfgang Marquardt , Adrian Mucha , Jan Nygren , Kai-Uwe Pleban , Franz Steinbacher
CPC classification number: G01N21/39 , G01J3/0286 , G01J3/28 , G01J3/433 , G01N33/0062 , G01N2021/399
Abstract: A method for measuring the concentration of a gas component in a measuring gas. An absorption line of the gas component is varied as a function of the wavelength of the light of a wavelength-tunable light source within a periodically sequential scanning interval. The absorption line of the gas component is modulated with a frequency (f0). Modulated light is guided through the measuring gas onto a detector. A measurement signal generated by the detector is demodulated upon determining a harmonic (nf0) of the frequency (f0). A measurement result is produced by fitting a setpoint curve to the profile of the demodulated measurement signal. Both demodulated measurement signal and setpoint cure are filtered with the aid of the same filter function. The filter function is operative to suppress noise signal components of the demodulated measurement signal that disturb both signal components of the demodulated measurement signal and the setpoint curve.
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公开(公告)号：US20170176326A1
公开(公告)日：2017-06-22
申请号：US15451714
申请日：2017-03-07
Applicant: Daylight Solutions Inc.
Inventor： Benjamin Bird , Miles James Weida , Jeremy Rowlette
CPC classification number: G01N21/35 , G01J3/10 , G01J3/108 , G01J3/28 , G01J3/2823 , G01J3/42 , G01J3/433 , G01J5/52 , G01J2003/104 , G01J2003/2826 , G01J2003/4332 , G01N21/3563 , G01N21/39 , G01N33/50 , G01N2201/12
Abstract: Spectrally analyzing an unknown sample (10A) includes (i) providing a spatially homogeneous region (10B) of the unknown sample (10A); (ii) directing a plurality of interrogation beams (16) at the spatially homogeneous region (10B) with a laser source (14), (iii) acquiring a separate output image (245) while the unknown sample (10A) is illuminated by each of the interrogation beams (16) with an image sensor (26A); and (iv) analyzing less than fifty output images (245) to analyze whether a characteristic is present in the unknown sample (10A) with a control system (28) that includes a processor. Each of the interrogation beams (16) is nominally monochromatic and has a different interrogation wavelength that is in the mid-infrared spectral range.
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10.发明授权公开(公告)号：US09546989B2
公开(公告)日：2017-01-17
申请号：US14503650
申请日：2014-10-01
Applicant: Siemens Aktiengesellschaft
Inventor： Ralf Bitter , Thomas Hankiewicz , Christoph Wolfgang Marquardt , Jan Nygren , Kai-Uwe Pleban , Franz Steinbacher
IPC: G01J3/28 , G01N33/00 , G01J3/433 , G01N21/3504 , G01N21/39
CPC classification number: G01N33/0006 , G01J3/28 , G01J3/433 , G01J2003/2869 , G01N21/3504 , G01N33/00 , G01N2021/399
Abstract: A method for measuring the concentration of a gas component in a measurement gas using a gas analyzer comprises varying the wavelength of the light of a wavelength-tunable light source within periodically consecutive scan intervals for wavelength-dependent scanning of a gas component absorption line of interest. The method also comprises modulating the wavelength of the light of the wavelength-tunable light source with a frequency, guiding the modulated light through the measurement gas onto a detector and demodulating a measurement signal generated by the detector in the event of a harmonic of the frequency. The method further comprises producing a measurement result by fitting a desired curve to the profile of the demodulated measurement signal. A function orthogonal to the desired curve is provided, and an orthogonal component of the measurement result is produced by fitting the orthogonal function to the profile of the demodulated measurement signal.
Abstract translation: 使用气体分析仪测量测量气体中的气体成分的浓度的方法包括：在周期性连续的扫描间隔内改变波长可调光源的光的波长，用于感兴趣的气体成分吸收线的波长相关扫描 。 该方法还包括以频率调制波长可调光源的光的波长，将调制的光通过测量气体引导到检测器上，并在频率谐波的情况下解调由检测器产生的测量信号 。 该方法还包括通过将所需曲线拟合到解调的测量信号的轮廓来产生测量结果。 提供与期望曲线正交的函数，并且通过将正交函数拟合到解调的测量信号的分布来产生测量结果的正交分量。
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