公开(公告)号：US09746375B2

公开(公告)日：2017-08-29

申请号：US14247526

申请日：2014-04-08

Applicant: Yokogawa Electric Corporation

Inventor： Anatoliy A. Kosterev

IPC: G01J3/02 ,  G02F1/19 ,  G02F1/01 ,  G02F1/21 ,  G01J3/42 ,  G01J3/433

CPC classification number: G01J3/0297 ,  G01J3/42 ,  G01J3/433 ,  G02F1/0131 ,  G02F1/0147 ,  G02F1/19 ,  G02F1/21

Abstract: Aspects of the disclosure include suppression of optical interference fringes in optical spectra via a modification to the refractive index of media that forms or is contained in one or more components of equipment utilized for optical spectroscopy. Such a modification can yield changes in the optical path of light propagating through at least one of the media, with the ensuing changes in the spectral structure of interference between light propagating through different optical paths. In certain embodiments, the refractive index of the media that forms or is contained in one or more components can be modified via application of a time-dependent stimulus to at least one of the one or more components. The applied stimulus can include pressure, mechanical strain or stress, temperature, a combination thereof, or the like.

公开(公告)号：US20170234732A1

公开(公告)日：2017-08-17

申请号：US15502430

申请日：2015-07-13

Applicant: ARCHIMEJ TECHNOLOGY

Inventor： Mejdi NCIRI ,  Eric Christian BELARBRE ,  Henri LEUNG

IPC: G01J3/447 ,  G01J3/433 ,  G01J3/10

CPC classification number: G01J3/447 ,  G01J3/10 ,  G01J3/4338 ,  G01J2003/102

Abstract: Disclosed is a spectroscopy device, including an analysis zone for receiving a sample; at least one light-emitting diode arranged to emit a light beam towards the analysis zone, having a luminous intensity spectral profile in a working wavelength interval; unit for varying with time the luminous intensity spectral profile emitted by the diode in the working wavelength interval of the diode; a detector, arranged to receive, during a variation with time of the luminous intensity spectral profile emitted by the diode, the light beam emitted by the diode and having crossed the analysis zone, and supplying a detection signal of the light beam emitted by the diode and received by the detector, in the form of a signal which depends on at least one characteristic representative of the luminous intensity spectral profile of the light-emitting diode. Application to derivative spectroscopy.

公开(公告)号：US09606002B2

公开(公告)日：2017-03-28

申请号：US14796858

申请日：2015-07-10

Applicant: Daylight Solutions Inc.

Inventor： Benjamin Bird ,  Miles James Weida ,  Jeremy Rowlette

IPC: G01J3/28 ,  G01J3/10 ,  G01J5/52 ,  G01J3/433 ,  G01J3/42 ,  G01N21/3563 ,  G01N21/39

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.

公开(公告)号：US09568366B2

公开(公告)日：2017-02-14

申请号：US14713329

申请日：2015-05-15

Applicant: Wisconsin Alumni Research Foundation

Inventor： Martin Thomas Zanni ,  Peter Hamm ,  Jan Helbing

IPC: G01B9/02 ,  G01J3/457 ,  G01J3/433

CPC classification number: G01J3/457 ,  G01J3/433

Abstract: A multidimensional spectrometer encodes frequency information into laser pulses so that a frequency insensitive detector may be used to collect data for a multi-dimensional spectrograph only from intensity information and knowledge of a modulation providing the encoding. In one embodiment the frequency encoding may be done by a conventional interferometer greatly simplifying construction of the spectrometer.

Abstract translation: 多维光谱仪将频率信息编码成激光脉冲，使得频率不敏感检测器可以仅用于从提供编码的调制的强度信息和知识中收集用于多维光谱仪的数据。 在一个实施例中，频率编码可以通过传统的干涉仪来完成，这大大简化了光谱仪的结构。

公开(公告)号：US20160299065A1

公开(公告)日：2016-10-13

申请号：US15027883

申请日：2015-09-23

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： Franz STEINBACHER

IPC: G01N21/39 ,  G01J3/433 ,  H01S5/062 ,  G01J3/42

CPC classification number: G01N21/39 ,  G01J3/42 ,  G01J3/433 ,  G01N33/0009 ,  G01N2021/399 ,  G01N2201/0612 ,  G01N2201/0691 ,  H01S5/06213 ,  H01S5/06216 ,  H01S5/0622

Abstract: Method and gas analyzer for measuring the concentration of a gas component in a sample gas, wherein to measure the concentration of a gas component in a sample gas, a laser diode is actuated by a current and light generated by the laser diode is guided through the sample gas to a detector, the current is simultaneously varied within periodically successive sampling intervals for the wavelength-dependent sampling of an absorption line of interest of the gas component, and the current can be additionally modulated sinusoidally based on wavelength modulation spectroscopy with a low frequency and small amplitude, such that a measuring signal generated by the detector is evaluated to form a measurement result, where to improve the measuring signal-noise ratio and achieve a much lower detection limit with the same measuring distance, the current is modulated with a high (RF) frequency in the GHz range so that no wavelength modulation occurs, and an RF modulation amplitude is selected at the maximum level using the linear control range of the laser diode where, before evaluation, the measuring signal is demodulated at the radio frequency.

Abstract translation: 用于测量样品气体中气体组分浓度的方法和气体分析器，其中为了测量样品气体中的气体组分的浓度，激光二极管由电流驱动，激光二极管产生的光被引导通过 采样气体到检测器，电流在周期性连续的采样间隔内同时变化，用于气体成分的感兴趣吸收线的波长相关采样，并且可以基于波长调制光谱法以低频率正弦调制电流 并且小振幅，使得由检测器产生的测量信号被评估以形成测量结果，其中改善测量信噪比并且以相同的测量距离实现低得多的检测限，电流被调制为高 （RF）频率，使得不发生波长调制，并且在该频率下选择RF调制幅度 使用激光二极管的线性控制范围的最大电平，其中在评估之前，测量信号在射频处被解调。

公开(公告)号：US09459209B2

公开(公告)日：2016-10-04

申请号：US13488105

申请日：2012-06-04

Applicant: Fumiaki Otera

Inventor： Fumiaki Otera

IPC: G01N21/59 ,  G01N21/61 ,  G01N21/3504 ,  G01J3/433 ,  G01N21/39 ,  G01J3/42

CPC classification number: G01N21/61 ,  G01J3/42 ,  G01J3/433 ,  G01J2003/4332 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/354

Abstract: If the specific gas concentration is relatively high, controller sets 0 as the modulation amplitude in a modulation amplitude controlling voltage generator for frequency modulation of laser light, controls a switching unit to select the output of a second ADC, and causes a computation unit to compute according to the direct absorption detection method to calculate the water molecule volume concentration. If the specific gas concentration is relatively low, the modulation amplitude is set to A, not 0, controls switching unit to select the output of a first ADC, which digitizes a synchronized detection signal, and causes the computation unit to compute according to the harmonic synchronous detection method to calculate the water molecule volume concentration. The concentration calculated using either of the methods is compared against a threshold value, and if decided that an accurate result cannot be obtained, the method is switched as the measurements are continuously executed.

Abstract translation: 如果特定气体浓度相对较高，则控制器将0设置为用于激光调制的调制幅度控制电压发生器中的调制幅度，控制切换单元选择第二ADC的输出，并使计算单元计算 根据直接吸收检测方法计算水分子体积浓度。 如果比气体浓度相对较低，则将调制幅度设定为A，而不是0，则控制切换单元选择第一ADC的输出，该数字化同步检测信号，并使计算单元根据谐波计算 同步检测方法计算水分子体积浓度。 将使用任一方法计算出的浓度与阈值进行比较，如果判断为无法获得准确的结果，则随着连续执行测量而切换该方法。

公开(公告)号：US09453765B2

公开(公告)日：2016-09-27

申请号：US14134518

申请日：2013-12-19

Applicant: Daniel Depenheuer ,  Thomas Hankiewicz ,  Frank Probst

Inventor： Daniel Depenheuer ,  Thomas Hankiewicz ,  Frank Probst

IPC: G01J3/433 ,  G01J3/42 ,  G01N21/39 ,  G01N21/47

CPC classification number: G01J3/4338 ,  G01J3/42 ,  G01J3/433 ,  G01N21/39 ,  G01N21/47

Abstract: A method in which the wavelength of the light of a tunable light source is varied periodically over an absorption line of interest for the gas component to measure the concentration of a gas component in a measurement gas based on one of two measurement methods of direct absorption spectroscopy and wavelength modulation spectroscopy and, where in the case of wavelength modulation spectroscopy, the wavelength of the light is additionally sinusoidally modulated at a high frequency and with a small amplitude, where the intensity of the light is detected after transradiation of the measurement gas and processed to yield a measurement result, and where in order to increase the accuracy and reliability of the measurement, the two measurement methods are applied simultaneously during each period, or alternately in consecutive periods, and their results are combined by averaging to form the measurement result.

Abstract translation: 基于直接吸收光谱法的两种测量方法之一，可调光源的波长在气体成分的感兴趣吸收线周期性地变化以测量测量气体中的气体成分的浓度的方法 和波长调制光谱，并且在波长调制光谱学的情况下，光的波长被额外地以高频率和小幅度正弦调制，其中在测量气体经过辐射之后检测到光的强度并且被处理 以产生测量结果，并且为了提高测量的精度和可靠性，在每个周期或者连续周期中同时应用两种测量方法，并且通过平均来组合它们的结果以形成测量结果。

公开(公告)号：US09329123B2

公开(公告)日：2016-05-03

申请号：US14424850

申请日：2013-08-06

Applicant: NewSouth Innovations Pty Limited

Inventor： Charles Charbel Harb

IPC: G01N21/39 ,  G01J3/42 ,  H01S3/08 ,  G01N21/3504 ,  G01N21/03 ,  G01J3/02 ,  G01J3/10 ,  G01J3/427 ,  G01J3/433 ,  H01S3/105

CPC classification number: G01N21/39 ,  G01J3/021 ,  G01J3/10 ,  G01J3/42 ,  G01J3/427 ,  G01J3/433 ,  G01J2003/102 ,  G01N21/031 ,  G01N21/3504 ,  G01N2201/06113 ,  H01S3/08063 ,  H01S3/105

Abstract: Methods and optical detection systems (200, 300, 800, 900) for generating and processing a real-time time-domain cavity ringdown spectroscopy (CRDS) signal (831, 931) from an absorbing species in an optical detection system (200, 300, 800, 900) having an optical ringdown cavity (200, 300) are disclosed. The optical ringdown cavity (200, 300) is adapted for accepting a sample of an absorbing species. One or more modulated light signals (241,243,245,341) are generated using one or more light sources (240, 242, 244, 340). The light source(s) (240, 242, 244, 340) is pulsed at a specified pulse rate(s). The modulated light signal(s) (241,243,245, 341) is resonated using the optical ringdown cavity (200, 300) comprising a plurality of mirrors (220, 230), or sets of mirrors (320, 330), to produce the CRDS signal (831, 931). The reflectivity of the mirrors (220, 230), or sets of mirrors (320, 330), is dependent upon the pulse rate of the modulated light signals (241,243,245,341). Different beamlines (212, 214, 216, 312, 314, 316) are established by the modulated light signal(s) (241,243,245, 341) and the mirrors (220, 230, 320, 330) interacting with the absorbing species sample.

Abstract translation: 用于从光学检测系统（200,300）中的吸收物质生成和处理实时时域衰减光谱（CRDS）信号（831,931）的方法和光学检测系统（200,300,800,900） ，800,900），其具有光学衰减腔（200,300）。 光学衰减腔（200,300）适于接收吸收物质的样品。 使用一个或多个光源（240,242,244,340）产生一个或多个调制光信号（241,243,245,341）。 光源（240,242,244,340）以指定的脉冲速率脉冲。 调制光信号（241,243,245,341）使用包括多个反射镜（220,230）或一组反射镜（320,330）的光学环形空腔（200,300）进行谐振，以产生CRDS信号 （831,931）。 反射镜（220,230）或反射镜组（320,330）的反射率取决于调制光信号的脉冲速率（241,243,245,341）。 通过调制光信号（241,243,245,341）和与吸收物质样品相互作用的反射镜（220,230,320,330）建立不同的光束线（212,214,216,312,314,316）。

公开(公告)号：US09291502B2

公开(公告)日：2016-03-22

申请号：US13933726

申请日：2013-07-02

Applicant: Seiko Epson Corporation

Inventor： Teruyuki Nishimura

IPC: G01B9/02 ,  G01J3/45 ,  G01J3/433 ,  G01J3/02 ,  G01J3/26 ,  G02B26/00

CPC classification number: G01J3/433 ,  G01J3/0264 ,  G01J3/027 ,  G01J3/26 ,  G02B26/001

Abstract: A spectroscopic measurement device includes a variable wavelength interference filter provided with a first reflecting film, a second reflecting film, and an electrostatic actuator for changing a gap amount of a gap between the first reflecting film and the second reflecting film, a detection section adapted to detect the light intensity of the light taken out by the variable wavelength interference filter, a voltage setting section and a voltage control section for applying an analog voltage varying continuously to the electrostatic actuator, a voltage monitoring section for monitoring the voltage applied to the electrostatic actuator, a storage section for storing V-λ data, and a light intensity acquisition section for obtaining the light intensity detected by the detection section at a timing at which the light transmitted through the variable wavelength interference filter has the measurement target wavelength based on the voltage monitored by the voltage monitoring section.

Abstract translation: 一种分光测量装置，包括具有第一反射膜，第二反射膜和用于改变第一反射膜和第二反射膜之间的间隙的间隙量的静电致动器的可变波长干涉滤光器， 检测由可变波长干涉滤波器取出的光的光强度，电压设定部分和电压控制部分，用于将连续变化的模拟电压施加到静电致动器;电压监视部分，用于监视施加到静电致动器的电压 ，用于存储V-λ数据的存储部分，以及光强度获取部分，用于在透过可变波长干涉滤光器的光具有基于电压的测量目标波长的定时获得由检测部分检测的光强度 由电压监控部分监控。

公开(公告)号：US09261453B2

公开(公告)日：2016-02-16

申请号：US14486765

申请日：2014-09-15

Applicant: Siemens Aktiengesellschaft

Inventor： Franz Steinbacher

IPC: G01N21/00 ,  G01N21/39 ,  G01N33/00 ,  G01J3/433

CPC classification number: G01N21/00 ,  G01J3/433 ,  G01J2003/4334 ,  G01N21/39 ,  G01N33/0062 ,  G01N2201/0691

Abstract: Gas analyzer and method for measuring the concentration of a gas component in a sample gas, wherein the wavelength of the light of a wavelength-tunable light source is varied within periodically successive sampling intervals and, in the process, additionally modulated with a frequency to perform wavelength dependent sampling of an absorption line of a gas component to be measured in the sample gas.

Abstract translation: 用于测量样品气体中的气体组分的浓度的气体分析仪和方法，其中波长可调光源的光的波长在周期性连续的采样间隔内变化，并且在该过程中另外以频率进行调制以执行 在样品气体中要测量的气体组分的吸收线的波长依赖性取样。