Signal analysis using multi-mode, common-path interferometry
    2.
    发明授权
    Signal analysis using multi-mode, common-path interferometry 有权
    信号分析采用多模式,共轨干涉法

    公开(公告)号:US07551289B2

    公开(公告)日:2009-06-23

    申请号:US11399632

    申请日:2006-04-06

    IPC分类号: G01B9/02

    摘要: A light scattering sensing system and method. In one embodiment, the system includes a sample branch configured to collect light signals backscattered from scattering centers contained in a coherence volume of a medium under evaluation, the sample branch including a multi-mode optical waveguide. In one embodiment, the method includes radiating low-coherence light into a scattering medium using a multi-mode optical waveguide, and collecting light signals backscattered by the scattering centers and light reflected by an end surface of the multi-mode optical waveguide using the multi-mode optical waveguide.

    摘要翻译: 一种光散射感测系统及方法。 在一个实施例中,系统包括样本分支,该样本分支被配置为收集从包含在待评估介质的相干体积中的散射中心反向散射的光信号,所述样本分支包括多模光波导。 在一个实施例中,该方法包括使用多模光波导将低相干光照射到散射介质中,并且收集由散射中心反向散射的光信号和由多模光波导的端面反射的光,使用多 模式光波导。

    Interferometric sensor for characterizing materials
    3.
    发明申请
    Interferometric sensor for characterizing materials 有权
    用于表征材料的干涉传感器

    公开(公告)号:US20050190372A1

    公开(公告)日:2005-09-01

    申请号:US10919223

    申请日:2004-08-16

    申请人: Aristide Dogariu

    发明人: Aristide Dogariu

    摘要: An integrated optical sensor, using low coherence interferometry, is capable of determining analyte concentration in a material sample based on absorption, scattering and polarization. The sensor includes one or more light collectors, with each collector having a separation distance from the region where the sample is illuminated by the source. The light backscattered from the sample is combined with reference arm light at the same optical path length for each light collector. The intensity of interference may be correlated with the concentration of an analyte in the material, for example the glucose concentration in a turbid medium like skin. The sensor operation can be based on fiber optics technology, integrated optics, or a combination of these. The operation is such that the spectrally resolved scattering and absorption coefficients can be measured simultaneously. In addition, the operation of the sensor can be synchronized with other sensors, for example temperature, pressure, or heartrate.

    摘要翻译: 使用低相干干涉测量的集成光学传感器能够基于吸收,散射和极化来确定材料样品中的分析物浓度。 该传感器包括一个或多个聚光器,每个收集器与样品被源照射的区域之间具有间隔距离。 从样品反向散射的光与每个光收集器的相同光程长度的参考臂光结合。 干扰强度可以与材料中分析物的浓度相关,例如在像浑浊的混浊介质中的葡萄糖浓度。 传感器操作可以基于光纤技术,集成光学或其组合。 该操作使得可以同时测量光谱分辨的散射和吸收系数。 此外,传感器的操作可以与其他传感器同步,例如温度,压力或心率。

    Microrheology methods and systems using low-coherence dynamic light scattering
    4.
    发明授权
    Microrheology methods and systems using low-coherence dynamic light scattering 有权
    使用低相干动态光散射的微流变学方法和系统

    公开(公告)号:US06958816B1

    公开(公告)日:2005-10-25

    申请号:US10242221

    申请日:2002-09-12

    IPC分类号: G01B9/02 G01N11/02 G01N21/49

    摘要: Methods and systems for using dynamic light scattering, for investigating local rheological responses of complex fluids over a frequency range larger than that provided by standard instrumentation. A low-coherence radiation source is used with fiber optics to allow measurements of small volume spacing of up to approximately 1/10 of a picoliter. The methods and systems are based on dynamic light scattering, for investigating the local rheological response of a complex fluid over a frequency range larger than that provided by standard mechanical instrumentation. The low-coherence radiation used in a fiber optics configuration allows the measurements to be confined to a small volume around a tenth of a picoliter. The ability of the method to accurately measure both loss and storage moduli has been tested using both simple Newtonian liquids and viscoelastic, complex fluids. Monitoring liquid-gel transitions in polymer solutions has also been demonstrated. The unique capability of the technique to localize the measurement volume can be used for three-dimensional mapping of rheological properties in heterogeneous systems. Other embodiments can use open-air setups instead of optical fibers to transmit and receive the low coherence light.

    摘要翻译: 使用动态光散射的方法和系统,用于调查复杂流体在比标准仪器提供的频率范围大的频率范围内的局部流变学响应。 低相干辐射源与光纤一起使用,允许测量高达约1/10皮升的小体积间隔。 该方法和系统基于动态光散射,用于调查在比标准机械仪器提供的频率范围内的复杂流体的局部流变响应。 在光纤配置中使用的低相干辐射允许测量被限制在十分之一微微升的小体积。 使用简单的牛顿液体和粘弹性复合流体测试了该方法准确测量损失和储存模量的能力。 监测聚合物溶液中的液体 - 凝胶转变也得到了证实。 该技术定位测量体积的独特能力可用于异构系统中流变特性的三维映射。 其他实施例可以使用露天设置来代替光纤来传输和接收低相干光。

    Non-invasive method and low-coherence apparatus system analysis and process control
    5.
    发明授权
    Non-invasive method and low-coherence apparatus system analysis and process control 失效
    非侵入性方法和低相干装置系统分析和过程控制

    公开(公告)号:US06738144B1

    公开(公告)日:2004-05-18

    申请号:US09465586

    申请日:1999-12-17

    申请人: Aristide Dogariu

    发明人: Aristide Dogariu

    IPC分类号: G01B902

    摘要: The disclosure relates to measuring devices that are particularly suited for the purpose of in-situ characterization of particles present in fluid substances or in air using a low-coherence interferometer. Specifically, the characterization includes average size, size distribution, volumetric density, and composition. The low-coherence interferometer utilizes a split band of radiation to illuminate a sample probe and a reference probe then combines the reflected radiation from both probes to determine the photon pathlength distribution of the tested particulate or colloidal containing stream and from this information determine the size characteristics of said stream. The methodology is relevant to possible spatially distributed control of chemical processes such as emulsion polymerization to produce paints, coatings, synthetic rubbers, or crystallization processes in pharmaceuticals, food, and bulk chemicals industries. Another application relates to on-line control of particle size and volumetric density is in combustion for diagnostics. The invention can be used for the characterization of coal particles, dense sprays and solid propellants or any other system, which is too dense for conventional optical measurement techniques. Beside the intrinsic particulate nature of these systems, random index of refraction variations are also created due to turbulence/temperature interactions. The remote optical characterization of systems with high-concentration of suspended solids is also important for water quality control and pollution monitoring.

    摘要翻译: 本公开涉及特别适用于使用低相干干涉仪在流体物质或空气中存在的颗粒进行原位表征的目的的测量装置。 具体来说,表征包括平均尺寸,尺寸分布,体积密度和组成。 低相干干涉仪利用分离的辐射带照射样品探针,然后参考探针组合来自两个探针的反射辐射,以确定测试的颗粒或胶体流的光子路径长度分布,并从该信息确定尺寸特征 的流。 该方法与化学过程的可能的空间分布控制相关,例如乳液聚合以在药物,食品和散装化学工业中生产油漆,涂料,合成橡胶或结晶过程。 另一个应用涉及在线控制颗粒尺寸和体积密度是用于诊断的燃烧。 本发明可用于表征煤颗粒,致密喷雾剂和固体推进剂或任何其它系统,其对于常规光学测量技术来说太致密。 除了这些系统的固有颗粒性质外,由于湍流/温度相互作用,也产生随机折射率变化。 具有高浓度悬浮固体的系统的远程光学表征对于水质控制和污染监测也很重要。

    Interferometric sensor for characterizing materials
    8.
    发明授权
    Interferometric sensor for characterizing materials 有权
    用于表征材料的干涉传感器

    公开(公告)号:US07307734B2

    公开(公告)日:2007-12-11

    申请号:US10919223

    申请日:2004-08-16

    申请人: Aristide Dogariu

    发明人: Aristide Dogariu

    IPC分类号: G01B9/02

    摘要: An integrated optical sensor, using low coherence interferometry, is capable of determining analyte concentration in a material sample based on absorption, scattering and polarization. The sensor includes one or more light collectors, with each collector having a separation distance from the region where the sample is illuminated by the source. The light backscattered from the sample is combined with reference arm light at the same optical path length for each light collector. The intensity of interference may be correlated with the concentration of an analyte in the material, for example the glucose concentration in a turbid medium like skin. The sensor operation can be based on fiber optics technology, integrated optics, or a combination of these. The operation is such that the spectrally resolved scattering and absorption coefficients can be measured simultaneously. In addition, the operation of the sensor can be synchronized with other sensors, for example temperature, pressure, or heartrate.

    摘要翻译: 使用低相干干涉测量的集成光学传感器能够基于吸收,散射和偏振来确定材料样品中的分析物浓度。 该传感器包括一个或多个聚光器,每个收集器与样品被源照射的区域之间具有间隔距离。 从样品反向散射的光与每个光收集器的相同光程长度的参考臂光结合。 干扰强度可以与材料中分析物的浓度相关,例如在像浑浊的混浊介质中的葡萄糖浓度。 传感器操作可以基于光纤技术,集成光学或其组合。 该操作使得可以同时测量光谱分辨的散射和吸收系数。 此外,传感器的操作可以与其他传感器同步,例如温度,压力或心率。

    Signal analysis using multi-mode, common-path interferometry
    9.
    发明申请
    Signal analysis using multi-mode, common-path interferometry 有权
    信号分析采用多模式,共轨干涉法

    公开(公告)号:US20070236698A1

    公开(公告)日:2007-10-11

    申请号:US11399632

    申请日:2006-04-06

    IPC分类号: G01B9/02

    摘要: A light scattering sensing system and method. In one embodiment, the system includes a sample branch configured to collect light signals backscattered from scattering centers contained in a coherence volume of a medium under evaluation, the sample branch including a multi-mode optical waveguide. In one embodiment, the method includes radiating low-coherence light into a scattering medium using a multi-mode optical waveguide, and collecting light signals backscattered by the scattering centers and light reflected by an end surface of the multi-mode optical waveguide using the multi-mode optical waveguide.

    摘要翻译: 一种光散射感测系统及方法。 在一个实施例中,系统包括样本分支,该样本分支被配置为收集从包含在待评估介质的相干体积中的散射中心反向散射的光信号,所述样本分支包括多模光波导。 在一个实施例中,该方法包括使用多模光波导将低相干光照射到散射介质中,并且收集由散射中心反向散射的光信号和由多模光波导的端面反射的光,使用多 模式光波导。

    Method for characterizing particles in a liquid medium using interferometry
    10.
    发明授权
    Method for characterizing particles in a liquid medium using interferometry 失效
    使用干涉测量来表征液体介质中的颗粒的方法

    公开(公告)号:US06587206B1

    公开(公告)日:2003-07-01

    申请号:US09690941

    申请日:2000-10-18

    IPC分类号: G01B902

    摘要: In a method for characterizing particles in a colloidal suspension, during a period in which the particles undergo sedimentation, changes are measured in the intensity among interference patterns generated by combining first and second partially coherent radiation portions. Each radiation portion is generated from the same source. The first portion includes a component transmitted through a fraction of the suspension, and the second portion is transmitted through a reference path.

    摘要翻译: 在用于表征胶体悬浮液中的颗粒的方法中,在颗粒经历沉淀的时期期间,通过组合第一和第二部分相干辐射部分产生的干涉图案之间的强度来测量变化。 每个辐射部分从相同的源产生。 第一部分包括通过悬架的一部分传递的部件,并且第二部分通过参考路径传递。