公开(公告)号：US20120062896A1

公开(公告)日：2012-03-15

申请号：US13217519

申请日：2011-08-25

Applicant: Aziz Mahfoud Familia ,  David S. Shackleford ,  Nafih Mekhilef ,  Mike A. Zimmerman

Inventor： Aziz Mahfoud Familia ,  David S. Shackleford ,  Nafih Mekhilef ,  Mike A. Zimmerman

IPC: G01N21/59

CPC classification number: G01J3/021 ,  G01J3/0245 ,  G01J3/42 ,  G01N15/082 ,  G01N21/3554 ,  G01N21/39 ,  G01N2021/399

Abstract: The present invention is directed to systems and methods which utilize a cavity ring-down spectroscopy (CRDS) technique implemented for the measurements of vapor transmission rate. In one embodiment, the vapor content to be measured is contained within an optical cavity. Light is then injected into the cavity up to a threshold level and the delay time of the injected light is measured. When the wavelength of the injected light is resonant with an absorption feature of the vapor the decay time increases linearly as a function of vapor content. In this manner, vapor content causes a longer delay time and thus the amount of vapor passing through the film (film permeation rate) can be determined in real-time.

Abstract translation: 本发明涉及利用实现用于测量蒸气透过率的空腔衰减光谱（CRDS）技术的系统和方法。 在一个实施例中，待测量的蒸汽含量被包含在光腔内。 然后将光注入腔中达阈值水平，并测量注入光的延迟时间。 当注入的光的波长与蒸气的吸收特征共振时，衰减时间作为蒸汽含量的函数线性增加。 以这种方式，蒸汽含量导致更长的延迟时间，因此可以实时确定通过膜的蒸气的量（膜渗透速率）。

公开(公告)号：US20120057145A1

公开(公告)日：2012-03-08

申请号：US13029992

申请日：2011-02-17

Applicant: James W. Tunnell ,  Brandon Nichols ,  Narasimhan Rajaram ,  Sheldon F. Bish ,  Liang Lim

Inventor： James W. Tunnell ,  Brandon Nichols ,  Narasimhan Rajaram ,  Sheldon F. Bish ,  Liang Lim

IPC: G01J3/42 ,  G01N21/00 ,  G01N21/55 ,  G01J3/44

CPC classification number: G01N21/474 ,  A61B5/0075 ,  A61B5/444 ,  G01J3/42 ,  G01N21/31 ,  G01N21/6486 ,  G01N21/65 ,  G01N2021/1736 ,  G01N2021/174 ,  G01N2201/0221 ,  G01N2201/06113 ,  G01N2201/06146 ,  G01N2201/0833

Abstract: Systems comprising an optical fiber switch connected to a light source and an optical fiber probe, the optical fiber probe comprising a first optical fiber connected to the optical fiber switch and a second optical fiber connected to a spectrophotometer. Methods for determining one or more tissue parameters comprising: emitting light from a first optical fiber into a tissue; collecting the light reemitted from the tissue with a second optical fiber; generating a spectra of the light reemitted from the tissue with a spectrophotometer; and utilizing a look-up table based algorithm to determine one or more tissue parameters, wherein the lookup-table based algorithm comprises the steps of: generating a look-up table by measuring the functional form of a reflectance measured by the spectrophotometer using one or more calibration standards with known optical properties; and implementing an iterative fitting routine based on the lookup-table.

Abstract translation: 包括连接到光源的光纤开关和光纤探针的系统，所述光纤探针包括连接到光纤开关的第一光纤和连接到分光光度计的第二光纤。 用于确定一个或多个组织参数的方法，包括：将光从第一光纤发射到组织中; 用第二光纤收集从组织再发射的光; 用分光光度计产生从组织再发射的光的光谱; 以及利用基于查找表的算法来确定一个或多个组织参数，其中所述基于查找表的算法包括以下步骤：通过测量由所述分光光度计测量的反射率的函数形式来生成查找表，使用一个或多个 具有已知光学性能的更多校准标准; 并且基于查找表来实现迭代拟合例程。

公开(公告)号：US20120032081A1

公开(公告)日：2012-02-09

申请号：US13196134

申请日：2011-08-02

Applicant: Takeaki Itsuji

Inventor： Takeaki Itsuji

IPC: G01J5/02 ,  G01J5/10 ,  G01J3/10

CPC classification number: G01N21/3581 ,  G01J3/108 ,  G01J3/42 ,  G01N21/3586 ,  G02F1/35 ,  G02F2203/13

Abstract: A terahertz-wave generating device including an optical waveguide containing an electrooptic crystal includes: first and second optical waveguides through which first and second light beams respectively propagate; a propagation portion through which a first terahertz wave propagates, the first terahertz wave being generated from the second optical waveguide in a direction different from a direction of the second light beam; and a delay portion arranged at incidence sides of the first and second light beams and configured to delay the first light beam relative to the second light beam. The first optical waveguide and the second optical waveguide are arranged with the propagation portion interposed therebetween. A first equiphase surface of the first terahertz wave is substantially aligned with a second equiphase surface of a second terahertz wave generated from the first optical waveguide in a direction different from a direction of the first light beam.

Abstract translation: 包括含有电光晶体的光波导的太赫兹波发生装置包括：分别传播第一和第二光束的第一和第二光波导; 第一太赫波传播的传播部分，第一太赫波在与第二光束的方向不同的方向上从第二光波导产生; 以及延迟部分，布置在第一和第二光束的入射侧，并被配置为相对于第二光束延迟第一光束。 第一光波导和第二光波导布置成传播部分插入其间。 第一太赫兹波的第一同相表面与从第一光波导产生的与第一光束的方向不同的方向基本上与第二太赫波的第二同相表面对准。

公开(公告)号：US08107077B2

公开(公告)日：2012-01-31

申请号：US12476680

申请日：2009-06-02

Applicant: Sakuya Tamada

Inventor： Sakuya Tamada

IPC: G01J4/00

CPC classification number: G01J3/42 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0224

Abstract: A terahertz spectroscopic apparatus includes a polarization beam splitter transmitting or reflecting a linearly polarized terahertz wave, a quarter wave plate imparting a phase difference of 90° to a terahertz wave impinging thereon, and an optical member guiding a circularly polarized terahertz wave impinging thereon from the polarization beam splitter via the quarter wave plate to an irradiation surface.

Abstract translation: 太赫兹分光装置包括：偏振光束分离器，其透射或反射线偏振太赫兹波;四分之一波片，其与入射的太赫兹波相差90度;以及光学构件，其引导从其入射的圆偏振太赫兹波， 偏振分束器通过四分之一波片到照射表面。

公开(公告)号：US08107072B2

公开(公告)日：2012-01-31

申请号：US12574213

申请日：2009-10-06

Applicant: Kazuo Yamauchi

Inventor： Kazuo Yamauchi

IPC: G01J3/08 ,  G01J3/42 ,  G01N21/31

CPC classification number: G01N21/3103 ,  G01J3/02 ,  G01J3/021 ,  G01J3/0232 ,  G01J3/027 ,  G01J3/08 ,  G01J3/42

Abstract: The present invention has been accomplished to provide an atomic absorption spectrophotometer capable of obtaining measurement data always in the state where the lowest detection limit performance is optimized, without depending on the frequency of the power supply. In a control program which runs on the microcomputer chip 42 mounted on the atomic absorption spectrophotometer 110, a plurality of lighting periods of the light sources 11 and 12 and extraction periods of the sampling data are memorized, whose lowest detection limit performance are optimized for the frequencies (50 Hz and 60 Hz) of the AC power source for driving the AC motor 22. In using the apparatus, by the control program, the frequency of the power source used in this apparatus is identified, the lighting period and sampling data extraction period corresponding to the identified frequency and the measurement mode that a user of the apparatus has previously set are selected from among a plurality of memorized values, and the appropriate lighting period is set to the hardware (PLD 43). Accordingly, without depending on the frequency, it is possible to obtain measurement data always in the state where the lowest detection limit performance is optimized.

Abstract translation: 本发明的目的是提供一种原子吸收分光光度计，其能够在不依赖于电源的频率的情况下始终以最低检测极限性能优化的状态获得测量数据。 在安装在原子吸收分光光度计110上的微计算机芯片42上运行的控制程序中，存储光源11和12的多个点亮周期和采样数据的提取周期，其最低检测限性能针对 用于驱动AC电动机22的AC电源的频率（50Hz和60Hz）。在使用该装置时，通过控制程序识别在该装置中使用的电源的频率，照明周期和采样数据提取 从多个存储值中选择对应于所识别的频率和装置的用户预先设置的测量模式的周期，并且将适当的发光周期设置到硬件（PLD 43）。 因此，在不依赖于频率的情况下，可以在最低检测极限性能优化的状态下始终获得测量数据。

公开(公告)号：US20120019536A1

公开(公告)日：2012-01-26

申请号：US13184100

申请日：2011-07-15

Applicant: Nicolas Arab

Inventor： Nicolas Arab

IPC: G06T11/20

CPC classification number: G01J3/2823 ,  G01J3/42 ,  G01N15/06 ,  G01N15/1463 ,  G01N21/6458 ,  G01N2015/0693

Abstract: Methods, storage mediums and systems (MS&S) are provided which successively image an imaging region of an assay analysis system (AAS) as particles are loaded into the imaging region, generate a frequency spectrum of each image via a discrete Fourier transform, integrate a same coordinate portion of each frequency spectrum and terminate the loading of particles upon computing an integral which meets preset criterion. In addition, MS&S are provided which send a signal indicative of whether enough particles are in an imaging region for further processes by an AAS based on the magnitude of integral calculated from an image's frequency spectrum. MM&S are also provided such that the steps of generating a frequency spectrum of each image and integrating a portion of each frequency spectrum are replaced by generating a convolved spatial image with a filter kernel and integrating a same coordinate portion of each convolved spatial image.

Abstract translation: 提供方法，存储介质和系统（MS＆S），其随着颗粒被加载到成像区域中，连续地成像测定分析系统（AAS）的成像区域，通过离散傅里叶变换产生每个图像的频谱， 每个频谱的坐标部分，并在计算满足预设标准的积分时终止粒子的加载。 另外，提供MS＆S，其发送指示基于从图像的频谱计算的积分的大小，是否足够的粒子在成像区域中是否由AAS进一步处理的信号。 还提供MM＆S，使得通过用滤波器核生成卷积空间图像并且对每个卷积空间图像的相同坐标部分进行积分来代替产生每个图像的频谱并对每个频谱的一部分进行积分的步骤。

公开(公告)号：US20120006098A1

公开(公告)日：2012-01-12

申请号：US13141380

申请日：2009-12-10

Applicant: Martin Degner ,  Hartmut Ewald ,  Nils Damaschke ,  Elfred Lewis

Inventor： Martin Degner ,  Hartmut Ewald ,  Nils Damaschke ,  Elfred Lewis

IPC: G01J3/42

CPC classification number: G01N21/33 ,  G01J3/02 ,  G01J3/0297 ,  G01J3/42 ,  G01N21/0303 ,  G01N21/274 ,  G01N21/31 ,  G01N21/3504 ,  G01N2021/0307 ,  G01N2201/062 ,  G01N2201/0631 ,  G01N2201/0668 ,  G01N2201/08

Abstract: The invention relates to a method and to a device for using partially non-stabilized broadband light sources to accurately measure partially broadband-absorbing substances using referencing measuring cells. In order to create a low-cost, high-resolution, and at the same time fast spectrographic device for measuring concentrations of substances in fluid or gaseous media that is also suitable for harsh environments, the light radiated by the broadband light sources (1) through light guiding optical systems is fed through the measuring section of the self-referencing measuring cell (20, 30, 40) or only partially through a measuring cell (10) to a measurement detector (photoreceptor 11) and partially through a reference path (optical waveguide 8) to a reference detector (photoreceptor 15), and a mode coupler (5, 9, 14) is associated with each optical waveguide (2, 4, 7, 8) in order to homogenize the radiation characteristic of the broadband light sources (1), which varies over time and space.

Abstract translation: 本发明涉及一种使用部分非稳定的宽带光源使用参考测量单元精确测量部分宽带吸收物质的方法和装置。 为了创建低成本，高分辨率，同时快速的光谱设备，用于测量也适用于恶劣环境的流体或气体介质中的物质浓度，宽带光源辐射的光（1） 通过光引导光学系统通过自参考测量单元（20,30,40）的测量部分或仅部分地通过测量单元（10）馈送到测量检测器（感光体11），并且部分地通过参考路径 光波导8）到参考检测器（感光体15），并且模式耦合器（5,9,14）与每个光波导（2,4,7,8）相关联，以便使宽带光的辐射特性均匀化 来源（1），随时间和空间而变化。

公开(公告)号：US20120002212A1

公开(公告)日：2012-01-05

申请号：US13050430

申请日：2011-03-17

Applicant: David W. Chandler ,  Kevin E. Strecker

Inventor： David W. Chandler ,  Kevin E. Strecker

IPC: G01J3/45

CPC classification number: G01J3/42 ,  G01N21/31 ,  G01N21/3504

Abstract: In an embodiment, a dual-etalon cavity-ring-down frequency-comb spectrometer system is described. A broad band light source is split into two beams. One beam travels through a first etalon and a sample under test, while the other beam travels through a second etalon, and the two beams are recombined onto a single detector. If the free spectral ranges (“FSR”) of the two etalons are not identical, the interference pattern at the detector will consist of a series of beat frequencies. By monitoring these beat frequencies, optical frequencies where light is absorbed may be determined.

Abstract translation: 在一个实施例中，描述了双标准谐振腔衰减频率梳状光谱仪系统。 宽带光源被分成两束。 一个光束穿过第一个标准具和被测试样品，而另一个光束穿过第二个标准具，并将两个光束复合到单个检测器上。 如果两个标准具的自由光谱范围（“FSR”）不相同，则检测器处的​​干涉图案将由一系列拍频组成。 通过监视这些拍频，可以确定吸收光的光频。

公开(公告)号：US20120002191A1

公开(公告)日：2012-01-05

申请号：US12828064

申请日：2010-06-30

Applicant: Charles W. Van Neste ,  Marissa E. Morales-Rodriguez ,  Lawrence R. Senesac ,  Thomas G. Thundat

Inventor： Charles W. Van Neste ,  Marissa E. Morales-Rodriguez ,  Lawrence R. Senesac ,  Thomas G. Thundat

IPC: G01J3/30

CPC classification number: G01J3/42 ,  A61B5/0071 ,  A61B5/444 ,  G01J3/10 ,  G01N21/3563 ,  G01N21/47 ,  G01N21/718 ,  G01N2021/1793 ,  G01N2021/399 ,  G01N2201/0616 ,  G01N2201/062

Abstract: A system and method are disclosed for standoff spectroscopy of molecules (e.g. from a residue) on a surface from a distance. A source emits radiation that modifies or conditions the residue, such as through photodecomposition. A spectral generating source measures a spectrum of the residue before and after the residue is exposed to the radiation from that source. The two spectra are compared to produce a distinct identification of the residues on the surface or identify certain properties of the residue.

Abstract translation: 公开了一种用于离开远距离表面上的分子（例如来自残基）的间隔光谱的系统和方法。 源发射修改或调节残留物的辐射，例如通过光分解。 光谱产生源测量残留物在残留物暴露于该源的辐射之前和之后的光谱。 比较两个光谱以产生表面上残留物的不同鉴定或鉴定残留物的某些性质。

公开(公告)号：US08067739B2

公开(公告)日：2011-11-29

申请号：US12141005

申请日：2008-06-17

Applicant: Takeaki Itsuji

Inventor： Takeaki Itsuji

IPC: G21G4/00 ,  G01J5/20

CPC classification number: G01J3/42 ,  G02F1/3534 ,  G02F2203/13 ,  H01L31/09

Abstract: A photoconductive element for generating or detecting a terahertz wave comprises a carrier generation layer for generating carriers on light irradiation, a pair of conductive electrodes provided in opposition on one face of the carrier generation layer, each containing a strip line, a pair of conductive antennas placed in opposition with a gap for light irradiation onto the carrier generation layer, each being joined to the electrodes, a pair of conductive adjusting stubs for adjusting a propagation state of the terahertz wave generated or detected by the carriers, wherein each of the adjusting stubs has a length of not longer than the wavelength λ of the terahertz wave generated by the carriers, and is placed at a distance of not more than the wavelength λ from a joint between the antenna and the electrode.

Abstract translation: 用于产生或检测太赫兹波的光电导元件包括用于在光照射下产生载流子的载流子产生层，在载体产生层的一个面上相对设置的一对导电电极，每个导体电极包含带状线，一对导电天线 放置在与载体产生层上的光照射的间隙相对应，每个接合到电极，一对导电调节短柱，用于调节由载体产生或检测的太赫兹波的传播状态，其中每个调节短截线 具有不大于由载流子产生的太赫兹波的波长λ的长度，并且从天线和电极之间的接合点放置在不大于波长λ的距离处。