公开(公告)号：US4687934A

公开(公告)日：1987-08-18

申请号：US818342

申请日：1986-01-10

Applicant: Robert E. Passaro ,  Raymond E. Rogers ,  Craig J. Griffith

Inventor： Robert E. Passaro ,  Raymond E. Rogers ,  Craig J. Griffith

IPC: G01J1/44 ,  G01N21/27 ,  G01N21/31 ,  G01N21/35 ,  G01J1/00 ,  G01D18/00

CPC classification number: G01N21/274 ,  G01N2021/3159 ,  G01N2021/3166 ,  G01N21/3504 ,  G01N2201/126 ,  G01N2201/1273 ,  G01N2201/12769

Abstract: Automatic zeroing apparatus zeroes an infrared gas analyzer automatically upon the occurrence of preselected conditions to indicate zero in the absence of absorption of infrared radiation by a gas mixture being analyzed. The gas analyzer has a sample cell for containing a gas mixture to be analyzed. Infrared radiation directed through the sample cell is detected at a preselected wavelength to produce a detection signal. A signal processor outputs a signal systematically related to the difference between the detection signal and a reference signal. For zeroing the sample cell is filled with gas substantially nonabsorbent of infrared radiation at the respective characteristic wavelength. A comparator produces an error signal when the output signal differs from zero. A gain control automatically controls the signal level of the detection signal to reduce the output signal substantially to zero with the nonabsorbent gas filling the sample cell. The preselected conditions may include the passage of a predetermined time and a temperature drift beyond a predetermined limit.

Abstract translation: 自动归零装置在发生预选条件时自动归零红外气体分析仪，以便在被正在分析的气体混合物不吸收红外辐射时指示为零。 气体分析仪具有用于容纳要分析的气体混合物的样品池。 以预选的波长检测引导通过样品池的红外辐射，以产生检测信号。 信号处理器输出与检测信号和参考信号之间的差异系统地相关的信号。 为了归零，样品池中填充有相应特征波长的基本上不吸收红外辐射的气体。 当输出信号与零不同时，比较器产生一个误差信号。 增益控制器自动控制检测信号的信号电平，使填充样品池的非吸收气体将输出信号基本上降至零。 预选条件可以包括经过预定时间和温度漂移超出预定极限。

公开(公告)号：US20240319087A1

公开(公告)日：2024-09-26

申请号：US18612104

申请日：2024-03-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Nobuhito HAYASHI ,  Kohei YAMADA

IPC: G01N21/3504 ,  G01N21/35 ,  G01N21/3586 ,  G01N21/359

CPC classification number: G01N21/3504 ,  G01N21/3586 ,  G01N21/359 ,  G01N2021/3595 ,  G01N2201/0636 ,  G01N2201/12769

Abstract: A spectroscopic device includes: an analysis optical system; a length measurement optical system; and a calculation device. The analysis optical system includes a moving mirror and a first light receiving element. The length measurement optical system includes a second light source configured to emit laser light, a gas cell with a gas that absorbs light of a predetermined wavelength sealed therein and configured to cause the laser light to be incident thereon, an emitted light amount detection unit configured to detect an amount of light emitted from the gas cell and output an emitted light amount detection signal, a light source control unit configured to control a wavelength of the laser light based on the emitted light amount detection signal, and a length measurement unit configured to use the laser light to obtain a displacement signal corresponding to a position of the moving mirror, and the calculation device includes a moving mirror position calculation unit, a light intensity calculation unit, and a Fourier transform unit configured to generate a spectral pattern.

公开(公告)号：US20230160812A1

公开(公告)日：2023-05-25

申请号：US18151632

申请日：2023-01-09

Applicant: VIAVI Solutions Inc.

Inventor： Lan SUN ,  Changmeng HSIUNG

IPC: G01N21/27 ,  G06F17/18

CPC classification number: G01N21/274 ,  G06F17/18 ,  G01N2201/12753 ,  G01N2201/12769 ,  G01N2201/12784

Abstract: A device may obtain a master beta coefficient of a master calibration model associated with a master instrument. The master beta coefficient may be at a grid of a target instrument. The device may perform constrained optimization of an objective function, in accordance with a set of constraints, in order to determine a pair of transferred beta coefficients. The constrained optimization may be performed based on an initial pair of transferred beta coefficients, the master beta coefficient, and spectra associated with a scouting set. The device may determine, based on the pair of transferred beta coefficients, a transferred beta coefficient. The device may determine a final transferred beta coefficient based on a set of transferred beta coefficients including the transferred beta coefficient. The final transferred beta coefficient may be associated with generating a transferred calibration model, corresponding to the master calibration model, for use by the target instrument.

公开(公告)号：US07746462B2

公开(公告)日：2010-06-29

申请号：US11751293

申请日：2007-05-21

Applicant: Zhongping Cai ,  Alexander Slobodov ,  Anatoly Romanovsky ,  Christian H. Wolters

Inventor： Zhongping Cai ,  Alexander Slobodov ,  Anatoly Romanovsky ,  Christian H. Wolters

IPC: G01N21/00

CPC classification number: G01N21/9501 ,  G01N21/8851 ,  G01N2201/1241 ,  G01N2201/12769 ,  H01J43/18 ,  H01J43/30

Abstract: An inspection system and method is provided herein for increasing the detection range of the inspection system. According to one embodiment, the inspection system may include a photodetector having a plurality of stages, which are adapted to convert light scattered from a specimen into an output signal, and a voltage divider network coupled for extending the detection range of the photodetector (and thus, the detection range of the inspection system) by saturating at least one of the stages. This forces the photodetector to operate in a non-linear manner. However, measurement inaccuracies are avoided by calibrating the photodetector output to remove any non-linear effects that may be created by intentionally saturating the at least one of the stages. In one example, a table of values may be generated during a calibration phase to convert the photodetector output into an actual amount of scattered light.

Abstract translation: 本文提供了一种用于增加检查系统的检测范围的检查系统和方法。 根据一个实施例，检查系统可以包括具有多个级的光电检测器，其适于将从样本散射的光转换成输出信号，以及耦合的用于扩展光电检测器的检测范围的分压器网络 ，检查系统的检测范围）通过饱和至少一个级。 这迫使光电探测器以非线性方式工作。 然而，通过校准光电检测器输出以消除可能通过故意饱和至少一个级而产生的任何非线性效应来避免测量不准确。 在一个示例中，可以在校准阶段期间生成值表，以将光电检测器输出转换成实际的散射光量。

公开(公告)号：US20080291454A1

公开(公告)日：2008-11-27

申请号：US11751293

申请日：2007-05-21

Applicant: Zhongping Cai ,  Alexander Slobodov ,  Anatoly Romanovsky ,  Christian H. Wolters

Inventor： Zhongping Cai ,  Alexander Slobodov ,  Anatoly Romanovsky ,  Christian H. Wolters

IPC: G01N21/55

CPC classification number: G01N21/9501 ,  G01N21/8851 ,  G01N2201/1241 ,  G01N2201/12769 ,  H01J43/18 ,  H01J43/30

Abstract: An inspection system and method is provided herein for increasing the detection range of the inspection system. According to one embodiment, the inspection system may include a photodetector having a plurality of stages, which are adapted to convert light scattered from a specimen into an output signal, and a voltage divider network coupled for extending the detection range of the photodetector (and thus, the detection range of the inspection system) by saturating at least one of the stages. This forces the photodetector to operate in a non-linear manner. However, measurement inaccuracies are avoided by calibrating the photodetector output to remove any non-linear effects that may be created by intentionally saturating the at least one of the stages. In one example, a table of values may be generated during a calibration phase to convert the photodetector output into an actual amount of scattered light.

Abstract translation: 本文提供了一种用于增加检查系统的检测范围的检查系统和方法。 根据一个实施例，检查系统可以包括具有多个级的光电检测器，其适于将从样本散射的光转换成输出信号，以及耦合的用于扩展光电检测器的检测范围的分压器网络 ，检查系统的检测范围）通过饱和至少一个级。 这迫使光电探测器以非线性方式工作。 然而，通过校准光电检测器输出以消除可能通过故意饱和至少一个级而产生的任何非线性效应来避免测量不准确。 在一个示例中，可以在校准阶段期间生成值表，以将光电检测器输出转换成实际的散射光量。

公开(公告)号：US08352205B2

公开(公告)日：2013-01-08

申请号：US12528101

申请日：2008-02-25

Applicant: Michael L. Myrick ,  Luisa Profeta

Inventor： Michael L. Myrick ,  Luisa Profeta

IPC: G01D18/00 ,  G01N21/00 ,  G06F19/00 ,  G06F17/40

CPC classification number: G01J3/28 ,  G01J3/02 ,  G01J3/0232 ,  G01J3/12 ,  G01N21/274 ,  G01N21/31 ,  G01N2201/12769

Abstract: The present subject matter is direct to methodologies for calibrating data obtained from an optical analysis system. An initial calibration matrix of sampled analyte concentrations is modified using mean-centering techniques and selection of low and high analyte concentration spectra to produce a two-point calibration. A modified calibration matrix is produced by generating a non-linear calibration matrix by multiplying the initial calibration matrix by the two-point calibration. In an alternate embodiment, an initial multivariate optical element design is modified by iteratively adjusting the design based on standard error of calibration determination based on non-linerly fitted functions.

Abstract translation: 本主题直接涉及用于校准从光学分析系统获得的数据的方法。 使用平均定心技术和低分辨率和高分析物浓度光谱的选择来修改采样分析物浓度的初始校准矩阵，以产生两点校准。 通过将初始校准矩阵乘以两点校准来生成非线性校准矩阵来产生修改的校准矩阵。 在替代实施例中，通过基于非线性拟合函数的校准确定的标准误差迭代地调整设计来修改初始多变量光学元件设计。

公开(公告)号：US20100153048A1

公开(公告)日：2010-06-17

申请号：US12528101

申请日：2008-02-25

Applicant: Michael L. Myrick ,  Luisa Profeta

Inventor： Michael L. Myrick ,  Luisa Profeta

IPC: G06F19/00

CPC classification number: G01J3/28 ,  G01J3/02 ,  G01J3/0232 ,  G01J3/12 ,  G01N21/274 ,  G01N21/31 ,  G01N2201/12769

Abstract: The present subject matter is direct to methodologies for calibrating data obtained from an optical analysis system. An initial calibration matrix of sampled analyte concentrations is modified using mean-centering techniques and selection of low and high analyte concentration spectra to produce a two-point calibration. A modified calibration matrix is produced by generating a non-linear calibration matrix by multiplying the initial calibration matrix by the two-point calibration. In an alternate embodiment, an initial multivariate optical element design is modified by iteratively adjusting the design based on standard error of calibration determination based on non-linerly fitted functions.

Abstract translation: 本主题直接涉及用于校准从光学分析系统获得的数据的方法。 使用平均定心技术和低分辨率和高分析物浓度光谱的选择来修改采样分析物浓度的初始校准矩阵，以产生两点校准。 通过将初始校准矩阵乘以两点校准来生成非线性校准矩阵来产生修改的校准矩阵。 在替代实施例中，通过基于非线性拟合函数的校准确定的标准误差迭代地调整设计来修改初始多变量光学元件设计。

公开(公告)号：US5206711A

公开(公告)日：1993-04-27

申请号：US535934

申请日：1990-06-11

Applicant: John W. Berthold ,  Charles R. Dailey

Inventor： John W. Berthold ,  Charles R. Dailey

IPC: G01N21/53 ,  G01N21/85

CPC classification number: G01N21/8507 ,  G01N2021/1751 ,  G01N21/534 ,  G01N2201/0621 ,  G01N2201/08 ,  G01N2201/124 ,  G01N2201/12769

Abstract: A fiber optic fluid opacity sensor includes a light source (12) transmitting light to dividing means (14) for providing a sample light signal (18) and a reference light signal (20) to dual photodetectors (26, 28). Sample and reference optical pathways (19, 21) are defined by optical fibers (18, 20) spaced apart from and axially aligned with the photodetectors (26, 28) at a predetermined distance. Signal processing means (30) takes the log ratio output of the signals from the photodetectors (26, 28) for cancelling the effect of light source drift since the same source (12) is common to both for measuring the light transmission and determining opacity therefrom. A sample probe (40) contains the photodetectors (26, 28) and the sample and reference optical pathways (19, 21). The light source (12) and the signal processing means (30) are situated outside of the probe (40) and by virtue thereof outside of the sample process line (48).

Abstract translation: 光纤液体不透明度传感器包括将光传送到分割装置（14）的光源（12），用于向双光电检测器（26,28）提供采样光信号（18）和参考光信号（20）。 采样和参考光学路径（19,21）由在预定距离处与光电检测器（26,28）间隔开并且轴向对齐的光纤（18,20）限定。 信号处理装置（30）获取来自光电检测器（26,28）的信号的对数比输出，以消除光源漂移的影响，因为相同的源（12）对于测量光透射和确定不透明度是共同的 。 样品探针（40）包含光电检测器（26,28）和样品和参考光学通路（19,21）。 光源（12）和信号处理装置（30）位于探针（40）的外部，并且由于其位于样品处理线（48）之外。

公开(公告)号：US4544273A

公开(公告)日：1985-10-01

申请号：US518633

申请日：1983-07-29

Applicant: Dale F. Berndt

Inventor： Dale F. Berndt

IPC: G01J1/16 ,  G01J1/18 ,  G01N21/53 ,  G01N21/00

CPC classification number: G01N21/534 ,  G01J2001/1636 ,  G01J2001/184 ,  G01N2201/0621 ,  G01N2201/1235 ,  G01N2201/12769

Abstract: Apparatus for controllably admitting a sample volume of engine exhaust into a bifurcated, closed-loop opacity chamber and wherein the exhaust sample is controllably directed away from the internal optics via symmetric flow inducing air guides. A pulsed light source is controllably directed through the opacity chamber and exhaust sample and the detected light is compared to a reference level so as to determine a relative measure of the sample's opacity. Attendant control circuitry permits the selected display of corresponding sample opacity and density values.

Abstract translation: 用于可控制地将发动机排气的样品体积引入分叉的闭环不透明室的装置，并且其中所述排气样品通过对称流引导的空气引导件被可控地远离所述内部光学器件。 脉冲光源被可控地引导通过不透明室并排出样品，并将检测到的光与参考水平进行比较，以便确定样品的不透明度的相对测量。 话务员控制电路允许选择显示相应的样本不透明度和浓度值。