公开(公告)号：US09581433B2

公开(公告)日：2017-02-28

申请号：US14103733

申请日：2013-12-11

Applicant: Sebastien Tixier ,  Michael Kon Yew Hughes ,  Stephane Savard

Inventor： Sebastien Tixier ,  Michael Kon Yew Hughes ,  Stephane Savard

IPC: G01B5/02 ,  G01B7/02 ,  G01B11/02 ,  G01B13/02 ,  G01B11/06

CPC classification number: G01B11/0691 ,  G01B9/02001 ,  G01B11/0633 ,  G01B11/0675 ,  G01B2210/42 ,  G01B2210/44 ,  G01B2290/65

Abstract: Non-contacting caliper measurements of free standing sheets such as porous polymer and paper detect mid-IR interferometric fringes created by the reflection of light from the top and bottom surfaces of the sheet. The technique includes directing a laser beam at a selected angle of incidence onto a single spot on the exposed outer surface wherein the laser beam comprises radiation having a wavelength in the 3-50 micron range and scanning the laser beam through a selected angle range as the laser beam is directed onto the exposed outer surface and measuring the intensity of an interference pattern that forms from the superposition of radiation that is reflected From the exposed outer surface and from the inner surface. Thickness can be extracted from the fringe separation in the interference pattern. Rotating and focusing elements ensure that the spot position on the sheet remains the same while varying the incident angle.

Abstract translation: 通过从片材的顶部和底部表面反射的光产生的自由基片材（如多孔聚合物和纸张）的非接触卡尺测量检测中红外干涉条纹。 该技术包括将激光束定向到暴露的外表面上的单个点上的入射角，其中激光束包括波长在3-50微米范围内的辐射，并且将激光束扫过选定的角度范围作为 激光束被引导到暴露的外表面上，并且测量从暴露的外表面和内表面反射的辐射的叠加形成的干涉图案的强度。 可以从干涉图案中的边缘分离中提取厚度。 旋转和聚焦元件可确保纸张上的光点位置保持不变，同时改变入射角度。

公开(公告)号：US20120049070A1

公开(公告)日：2012-03-01

申请号：US12862733

申请日：2010-08-24

Applicant: Payam Mousavi ,  Steven Dodge ,  Frank Martin Haran ,  Stephane Savard ,  David Jez ,  Stuart James Heath

Inventor： Payam Mousavi ,  Steven Dodge ,  Frank Martin Haran ,  Stephane Savard ,  David Jez ,  Stuart James Heath

IPC: G01J5/54 ,  G01J3/28

CPC classification number: G01J3/42 ,  D21F7/06 ,  D21G9/0009 ,  G01B11/0625 ,  G01J3/28 ,  G01J3/2889 ,  G01N21/3559 ,  G01N21/3586 ,  G01N21/86 ,  G01N2021/8663

Abstract: An apparatus for incorporation into time-domain spectroscopy systems that creates a continuous reference whereby a sample pulses' phase and amplitude can be tracked and corrected employs a beam splitter to generate sample and reference pulses. A detector is positioned for receiving the reference radiation pulses that do not interact with the sample. The same detector is also positioned for receiving the sample radiation pulses that emerge from the sample. The apparatus can be readily implemented by being configured between the emitter and detector of a terahertz time-domain spectrometer. The reference pulse is used to trace the changes in time and amplitude of the sample pulse. Since any changes in the reference pulse will most likely manifest in the sample pulse, the reference pulse is monitored and used to correct the sample pulse and thereby reduce the effects of jitter.

Abstract translation: 一种用于结合到时域光谱系统中的装置，其创建连续参考，由此可以跟踪和校正采样脉冲的相位和幅度，使用分束器来产生采样和参考脉冲。 定位检测器用于接收不与样品相互作用的参考辐射脉冲。 相同的检测器也被定位成用于接收从样品中出现的样品辐射脉冲。 该装置可以通过配置在太赫兹时域光谱仪的发射极和检测器之间来容易地实现。 参考脉冲用于跟踪采样脉冲的时间和幅度的变化。 由于参考脉冲中的任何变化将最有可能体现在采样脉冲中，所以监视参考脉冲并用于校正采样脉冲，从而减少抖动的影响。

公开(公告)号：US20150346030A1

公开(公告)日：2015-12-03

申请号：US14291629

申请日：2014-05-30

Applicant: Stephane Savard

Inventor： Stephane Savard

IPC: G01J3/10 ,  G01J3/02 ,  G01J3/42

CPC classification number: G01J3/42 ,  G01J3/021 ,  G01J3/108 ,  G01N21/3586

Abstract: Robust terahertz time-domain spectrometer has a reflective surface arrangement that renders the sensor insensitive to x or y displacement. The apparatus includes: (a) first scanner head; (b) a first reflective surface; (c) emitter; (d) beam splitter to yield reference radiation pulses and sample radiation pulses; (e) first reflector to reflect sample radiation pulses that have been transmitted through the sample to generate reflected sample radiation pulses that are directed towards a web; (f) second reflector that reflects the reference radiation pulses to generate reflected reference radiation pulses that are directed towards the beam splitter which in turn transmits a portion of the reflected references radiation pulses towards the web; and (g) a detector that receives (i) the reflected sample radiation pulses that have interacted with the sample a plurality of times and (ii) reflected reference radiation pulses that have interacted with the sample a plurality of times.

Abstract translation: 坚固的太赫兹时域光谱仪具有使得传感器对x或y位移不敏感的反射表面布置。 该装置包括：（a）第一扫描头; （b）第一反射面; （c）发射器; （d）分束器以产生参考辐射脉冲和采样辐射脉冲; （e）第一反射器以反射已经透射通过样品的样品辐射脉冲，以产生指向幅材的反射样品辐射脉冲; （f）第二反射器，其反射参考辐射脉冲以产生反射的参考辐射脉冲，所述反射参考辐射脉冲指向分束器，所述反射参考辐射脉冲又将反射的参考辐射脉冲的一部分朝向幅材传送; 和（g）检测器，其接收（i）多次与样本相互作用的反射样品辐射脉冲，和（ii）多次与样本相互作用的反射参考辐射脉冲。

公开(公告)号：US09140542B2

公开(公告)日：2015-09-22

申请号：US13444767

申请日：2012-04-11

Applicant: Stephane Savard ,  Adam Krolak

Inventor： Stephane Savard ,  Adam Krolak

IPC: G01B11/06 ,  G01N21/3581 ,  G01N21/3586

CPC classification number: G01B11/06 ,  G01B11/0625 ,  G01B11/0691 ,  G01N21/3581 ,  G01N21/3586 ,  G01N21/8422 ,  G01N21/86 ,  G01N21/8851 ,  G01N21/93

Abstract: An analytical model simulates the propagation of radiation through a coated continuous web where layer thickness and refractive index, as variables, determine the speed and direction of transmitted radiation. The model predicts characteristics of transmitted radiation based on characteristics of incident radiation and initially assigned values for layer thicknesses. Coating thickness(s) are ascertained in a process whereby incident radiation of known characteristics is directed onto a coated web and thereafter, actual measurements of transmitted radiation are compared to predicted characteristics. Using a fitting algorithm, the assigned thickness(es) of the layer(s) of the model are adjusted and the process repeated until the actual and predicted values are within desired limits at which time, the assigned thickness(es) represent the measured calipers. Radiation measurements are obtained using terahertz time-domain spectroscopy apparatus that creates a continuous reference whereby a sample pulses' phase and amplitude can be tracked and corrected.

Abstract translation: 分析模型模拟辐射通过涂覆的连续纤维网的传播，其中层厚度和折射率作为变量确定透射辐射的速度和方向。 该模型基于入射辐射的特征和层厚度的初始分配值来预测透射辐射的特征。 在一个过程中确定涂层厚度，其中已知特征的入射辐射被引导到涂布的纤维网上，此后将透射辐射的实际测量与预测特征进行比较。 使用拟合算法，调整模型层的指定厚度（es），并重复该过程，直到实际值和预测值在期望的限度内为止，所分配的厚度（es）表示测量的卡尺 。 使用太赫兹时域光谱仪器获得辐射测量值，该设备产生连续参考，从而可以跟踪和校正采样脉冲的相位和幅度。

公开(公告)号：US20130204577A1

公开(公告)日：2013-08-08

申请号：US13444767

申请日：2012-04-11

Applicant: Stephane Savard ,  Adam Krolak

Inventor： Stephane Savard ,  Adam Krolak

IPC: G01B11/06 ,  G06F15/00

CPC classification number: G01B11/06 ,  G01B11/0625 ,  G01B11/0691 ,  G01N21/3581 ,  G01N21/3586 ,  G01N21/8422 ,  G01N21/86 ,  G01N21/8851 ,  G01N21/93

Abstract: An analytical model simulates the propagation of radiation through a coated continuous web where layer thickness and refractive index, as variables, determine the speed and direction of transmitted radiation. The model predicts characteristics of transmitted radiation based on characteristics of incident radiation and initially assigned values for layer thicknesses. Coating thickness(s) are ascertained in a process whereby incident radiation of known characteristics is directed onto a coated web and thereafter, actual measurements of transmitted radiation are compared to predicted characteristics. Using a fitting algorithm, the assigned thickness(es) of the layer(s) of the model are adjusted and the process repeated until the actual and predicted values are within desired limits at which time, the assigned thickness(es) represent the measured calipers. Radiation measurements are obtained using terahertz time-domain spectroscopy apparatus that creates a continuous reference whereby a sample pulses' phase and amplitude can be tracked and corrected.

Abstract translation: 分析模型模拟辐射通过涂覆的连续纤维网的传播，其中层厚度和折射率作为变量确定透射辐射的速度和方向。 该模型基于入射辐射的特征和层厚度的初始分配值来预测透射辐射的特征。 在一个过程中确定涂层厚度，其中已知特征的入射辐射被引导到涂布的纤维网上，此后将透射辐射的实际测量与预测特征进行比较。 使用拟合算法，调整模型层的指定厚度（es），并重复该过程，直到实际值和预测值在期望的限度内为止，所分配的厚度（es）表示测量的卡尺 。 使用太赫兹时域光谱仪器获得辐射测量值，该设备产生连续参考，从而可以跟踪和校正采样脉冲的相位和幅度。

公开(公告)号：US09182281B1

公开(公告)日：2015-11-10

申请号：US14291629

申请日：2014-05-30

Applicant: Stephane Savard

Inventor： Stephane Savard

IPC: G01J3/00 ,  G01J3/10 ,  G01J3/42 ,  G01J3/02

CPC classification number: G01J3/42 ,  G01J3/021 ,  G01J3/108 ,  G01N21/3586

Abstract: Robust terahertz time-domain spectrometer has a reflective surface arrangement that renders the sensor insensitive to x or y displacement. The apparatus includes: (a) first scanner head; (b) a first reflective surface; (c) emitter; (d) beam splitter to yield reference radiation pulses and sample radiation pulses; (e) first reflector to reflect sample radiation pulses that have been transmitted through the sample to generate reflected sample radiation pulses that are directed towards a web; (f) second reflector that reflects the reference radiation pulses to generate reflected reference radiation pulses that are directed towards the beam splitter which in turn transmits a portion of the reflected references radiation pulses towards the web; and (g) a detector that receives (i) the reflected sample radiation pulses that have interacted with the sample a plurality of times and (ii) reflected reference radiation pulses that have interacted with the sample a plurality of times.

Abstract translation: 坚固的太赫兹时域光谱仪具有使得传感器对x或y位移不敏感的反射表面布置。 该装置包括：（a）第一扫描头; （b）第一反射面; （c）发射器; （d）分束器以产生参考辐射脉冲和采样辐射脉冲; （e）第一反射器以反射已经透射通过样品的样品辐射脉冲，以产生指向幅材的反射样品辐射脉冲; （f）第二反射器，其反射参考辐射脉冲以产生反射的参考辐射脉冲，所述反射参考辐射脉冲指向分束器，所述反射参考辐射脉冲又将反射的参考辐射脉冲的一部分朝向幅材传送; 和（g）检测器，其接收（i）多次与样本相互作用的反射样品辐射脉冲，和（ii）多次与样本相互作用的反射参考辐射脉冲。

公开(公告)号：US20150253127A1

公开(公告)日：2015-09-10

申请号：US14197181

申请日：2014-03-04

Applicant: Michael Kon Yew Hughes ,  Sebastien Tixier ,  Stephane Savard

Inventor： Michael Kon Yew Hughes ,  Sebastien Tixier ,  Stephane Savard

IPC: G01B11/06

CPC classification number: G01B11/0691 ,  G01B11/0625 ,  G01B2210/46

Abstract: Non-contacting caliper measurements of free-standing sheets detect mid-IR interferometric fringes created by the reflection of light from the top and bottom surfaces of the sheet. The technique includes directing a laser beam at a selected angle of incidence onto a single spot on the exposed outer surface and scanning the laser beam through a selected wavelength range as the laser beam is directed onto the exposed outer surface and measuring the intensity of an interference pattern that forms from the superposition of radiation that is reflected from the exposed outer surface and from the inner surface. Alternatively, the intensity of an interference pattern formed from the superposition of radiation that is directly transmitted through the web and radiation that is transmitted through the web after internal reflections from the internal surfaces of the web. Thickness can be extracted from the fringe separation in the interference pattern.

Abstract translation: 独立纸张的非接触式卡尺测量法检测由片材的顶部和底部表面反射的光产生的中红外干涉条纹。 该技术包括将激光束以选定的入射角定向到暴露的外表面上的单个点上，并且当激光束被引导到暴露的外表面上并且测量干涉强度时，将激光束扫过选定的波长范围 从暴露的外表面和内表面反射的辐射的叠加形成的图案。 或者，由内部反射从网的内表面通过幅材直接透过的辐射叠加形成的干涉图案的强度和透过纸幅的辐射。 可以从干涉图案中的边缘分离中提取厚度。

公开(公告)号：US20150159995A1

公开(公告)日：2015-06-11

申请号：US14103733

申请日：2013-12-11

Applicant: Sebastien Tixier ,  Michael Kon Yew Hughes ,  Stephane Savard

Inventor： Sebastien Tixier ,  Michael Kon Yew Hughes ,  Stephane Savard

IPC: G01B11/06

CPC classification number: G01B11/0691 ,  G01B9/02001 ,  G01B11/0633 ,  G01B11/0675 ,  G01B2210/42 ,  G01B2210/44 ,  G01B2290/65

Abstract: Non-contacting caliper measurements of free standing sheets such as porous polymer and paper detect mid-IR interferometric fringes created by the reflection of light from the top and bottom surfaces of the sheet. The technique includes directing a laser beam at a selected angle of incidence onto a single spot on the exposed outer surface wherein the laser beam comprises radiation having a wavelength in the 3-50 micron range and scanning the laser beam through a selected angle range as the laser beam is directed onto the exposed outer surface and measuring the intensity of an interference pattern that forms from the superposition of radiation that is reflected From the exposed outer surface and from the inner surface. Thickness can be extracted from the fringe separation in the interference pattern. Rotating and focusing elements ensure that the spot position on the sheet remains the same while varying the incident angle.

Abstract translation: 通过从片材的顶部和底部表面反射的光产生的自由基片材（如多孔聚合物和纸张）的非接触卡尺测量检测中红外干涉条纹。 该技术包括将激光束定向到暴露的外表面上的单个点上的入射角，其中激光束包括波长在3-50微米范围内的辐射，并且将激光束扫过选定的角度范围作为 激光束被引导到暴露的外表面上，并且测量从暴露的外表面和内表面反射的辐射的叠加形成的干涉图案的强度。 可以从干涉图案中的边缘分离中提取厚度。 旋转和聚焦元件可确保纸张上的光点位置保持不变，同时改变入射角度。

公开(公告)号：US08378304B2

公开(公告)日：2013-02-19

申请号：US12862733

申请日：2010-08-24

Applicant: Payam Mousavi ,  Steven Dodge ,  Frank Martin Haran ,  Stephane Savard ,  David Jez ,  Stuart James Heath

Inventor： Payam Mousavi ,  Steven Dodge ,  Frank Martin Haran ,  Stephane Savard ,  David Jez ,  Stuart James Heath

IPC: G01J5/02

CPC classification number: G01J3/42 ,  D21F7/06 ,  D21G9/0009 ,  G01B11/0625 ,  G01J3/28 ,  G01J3/2889 ,  G01N21/3559 ,  G01N21/3586 ,  G01N21/86 ,  G01N2021/8663

Abstract: An apparatus for incorporation into time-domain spectroscopy systems that creates a continuous reference whereby a sample pulses' phase and amplitude can be tracked and corrected employs a beam splitter to generate sample and reference pulses. A detector is positioned for receiving the reference radiation pulses that do not interact with the sample. The same detector is also positioned for receiving the sample radiation pulses that emerge from the sample. The apparatus can be readily implemented by being configured between the emitter and detector of a terahertz time-domain spectrometer. The reference pulse is used to trace the changes in time and amplitude of the sample pulse. Since any changes in the reference pulse will most likely manifest in the sample pulse, the reference pulse is monitored and used to correct the sample pulse and thereby reduce the effects of jitter.

Abstract translation: 一种用于结合到时域光谱系统中的装置，其创建连续参考，由此可以跟踪和校正采样脉冲的相位和幅度，使用分束器来产生采样和参考脉冲。 定位检测器用于接收不与样品相互作用的参考辐射脉冲。 相同的检测器也被定位成用于接收从样品中出现的样品辐射脉冲。 该装置可以通过配置在太赫兹时域光谱仪的发射极和检测器之间来容易地实现。 参考脉冲用于跟踪采样脉冲的时间和幅度的变化。 由于参考脉冲中的任何变化将最有可能体现在采样脉冲中，所以监视参考脉冲并用于校正采样脉冲，从而减少抖动的影响。