Fiber optic probe for remote spectroscopy

    公开(公告)号:US09599507B2

    公开(公告)日:2017-03-21

    申请号:US14766068

    申请日:2014-02-05

    Abstract: A fiber optic probe assembly is provided. The probe comprises a first optical system and a second optical system, a delivery light guide comprising one or more than one delivery optical fiber for transmitting excitation radiation from a radiation source disposed at a proximal end of the light guide to the first optical system. The first optical system comprising one or more than one first optical element for forming a substantially collimated illumination beam from the excitation radiation. An optically opaque tubular sleeve is fitted over the first optical system to optically isolate the first optical system and the delivery light guide from the second optical system. The second optical system comprising one or more than one second optical element for gathering optical radiation scattered from a sample and forming the optical radiation into a collection beam. A collection light guide comprising one or more than one collection optical fiber receives the collection beam and transmits the collection beam to an analyzer. The first and second optical systems are disposed within a housing so that an emission cone of the first optical system and an acceptance cone of the second optical system substantially overlap. A spectroscopic measurement system comprising the optic fiber probe is also provided.

    Spectroscopic Unit And Spectroscopic Device Using Same
    42.
    发明申请
    Spectroscopic Unit And Spectroscopic Device Using Same 有权
    光谱单位和光谱仪使用相同

    公开(公告)号:US20160313183A1

    公开(公告)日:2016-10-27

    申请号:US15104206

    申请日:2014-09-17

    Abstract: A spectroscopic unit and spectroscopic device according to the present invention are provided with a filter that is provided with a plurality of optical filter elements disposed in order from the entrance side to the exit side of light under measurement and has different transmission wavelengths corresponding to entrance positions along a first direction. A first optical filter element from among the plurality of optical filter elements is tilted with respect to a second optical filter element disposed adjacently to the first optical filter element as a result of the first optical filter element being rotated by a prescribed angle with a third direction that is perpendicular to both the first direction and s second direction from the entrance side to the exit side as the axis of rotation thereof or being rotated by a prescribed angle with the first direction as the axis of rotation thereof.

    Abstract translation: 根据本发明的分光单元和分光装置设置有滤光器,该滤光器设置有从测量的光的入射侧到出射侧的顺序设置的多个滤光器元件,并且具有对应于入口位置的不同透射波长 沿着第一个方向。 多个滤光器元件中的第一滤光器元件相对于与第一滤光元件相邻设置的第二滤光元件倾斜,作为第一光学滤光元件与第三方向旋转预定角度的结果 其从第一方向和第二方向垂直于入口侧至出口侧,作为其旋转轴线,或者以第一方向旋转规定角度作为其旋转轴线。

    Targeted Agile Raman System for Detection of Unknown Materials
    43.
    发明申请
    Targeted Agile Raman System for Detection of Unknown Materials 审中-公开
    用于检测未知材料的目标敏捷拉曼系统

    公开(公告)号:US20130135609A1

    公开(公告)日:2013-05-30

    申请号:US13729171

    申请日:2012-12-28

    Abstract: The present disclosure provides for a system and method for detecting unknown materials. A test data set, which may comprise a hyperspectral data set, is generated representative of a first location. The test data set may be analyzed to determine a second location which may be interrogated using a Raman spectroscopic device to generate a Raman data set. The Raman data set may be analyzed to associated an unknown material with a known material such as: a chemical material, a biological material, an explosive material, a hazardous material, a drug material, and combinations thereof.

    Abstract translation: 本公开提供了用于检测未知材料的系统和方法。 产生代表第一位置的测试数据集,其可以包括高光谱数据集。 可以分析测试数据集以确定可以使用拉曼光谱装置询问的第二位置,以产生拉曼数据集。 可以分析拉曼数据集,以将已知材料与未知材料相关联,例如:化学材料,生物材料,爆炸材料,危险材料,药物材料及其组合。

    System and Method for Combined Raman, SWIR and LIBS Detection
    44.
    发明申请
    System and Method for Combined Raman, SWIR and LIBS Detection 有权
    组合拉曼,SWIR和LIBS检测的系统和方法

    公开(公告)号:US20110080577A1

    公开(公告)日:2011-04-07

    申请号:US12899119

    申请日:2010-10-06

    Abstract: A system and method for the detection and identification of explosives and explosive residues using a combination of SWIR, Raman, and LIBS spectroscopy techniques, including imaging. A region of interest may be surveyed to identify a target area, wherein the target area comprises at least one unknown material. This surveying may be accomplished using visible imagery or SWIR imagery. The target area may be interrogated using Raman spectroscopy and LIBS spectroscopy to identify the unknown material. SWIR techniques may also be used to interrogate the target area. Fusion algorithms may also be applied to visible images, SWIR data sets, Raman data sets, and/or LIBS data sets.

    Abstract translation: 一种使用SWIR,拉曼和LIBS光谱技术组合检测和识别爆炸物和爆炸物残留物的系统和方法,包括成像。 可以调查感兴趣的区域以识别目标区域,其中目标区域包括至少一种未知材料。 可以使用可见图像或SWIR图像来完成此测量。 可以使用拉曼光谱和LIBS光谱来询问目标区域以识别未知材料。 也可以使用SWIR技术来询问目标区域。 融合算法也可以应用于可见图像,SWIR数据集,拉曼数据集和/或LIBS数据集。

    Method and system for fiber optic determination of gas concentrations in liquid receptacles
    46.
    发明授权
    Method and system for fiber optic determination of gas concentrations in liquid receptacles 失效
    液体容器中气体浓度的光纤测定方法和系统

    公开(公告)号:US07385692B1

    公开(公告)日:2008-06-10

    申请号:US11412924

    申请日:2006-04-28

    Abstract: A system for determining gas compositions includes a probe, inserted into a source of gaseous material, the probe having a gas permeable sensor tip and being capable of sending and receiving light to and from the gaseous material, a sensor body, connected to the probe, situated outside of the source and a fiber bundle, connected to the sensor body and communicating light to and from the probe. The system also includes a laser source, connected to one portion of the fiber bundle and providing laser light to the fiber bundle and the probe a Raman spectrograph, connected to another portion of the fiber bundle, receiving light from the probe and filtering the received light into specific channels and a data processing unit, receiving and analyzing the received light in the specific channels and outputting concentration of specific gas species in the gaseous material based on the analyzed received light.

    Abstract translation: 用于确定气体组成的系统包括插入气态材料源的探针,所述探针具有气体可渗透的传感器末端并且能够向气体材料发射和接收光,连接到探针的传感器主体, 位于源的外部和纤维束,连接到传感器主体并将光与探头连通。 该系统还包括激光源,其连接到纤维束的一部分并向纤维束提供激光,并且探针与连接到纤维束的另一部分的拉曼光谱仪接收来自探针的光并过滤接收的光 进入特定通道和数据处理单元,接收并分析特定通道中的接收光,并基于分析的接收光输出气态物质中特定气体种类的浓度。

    Spectroscopic device
    47.
    发明授权
    Spectroscopic device 有权
    光谱仪

    公开(公告)号:US07038775B2

    公开(公告)日:2006-05-02

    申请号:US10482779

    申请日:2002-07-05

    Applicant: Shirou Sakai

    Inventor: Shirou Sakai

    Abstract: A spectroscopic system according to the present invention 10 comprises: an optical fiber bundle 12 whose emitting end 12a is arranged in a vertical direction; a slit 16 which is arranged so as to oppose the emitting end 12a of the optical fiber bundle 12; spectroscopic element arrangement means 20 which can switchably arrange either a first diffraction grating 23 in which grooves extending along the vertical direction are arranged in a horizontal direction at a predetermined groove density, or a second diffraction grating 24 in which grooves extending along the vertical direction are arranged in the horizontal direction at a groove density larger than that of the first diffraction grating 23, on an optical path of light which is emitted from the emitting end 12a of the optical fiber bundle 12 and passes through the slit 16; and a photomultiplier tube 30 in which a plurality of anodes 53 extending along the vertical direction are arranged in the horizontal direction.

    Abstract translation: 根据本发明的光谱系统10包括:发射端12a沿垂直方向布置的光纤束12; 狭缝16,与光纤束12的发射端部12a相对配置; 分光元件布置装置20,其可切换地布置沿着垂直方向延伸的凹槽的第一衍射光栅23以预定凹槽密度沿水平方向布置;或第二衍射光栅24,其中沿着垂直方向延伸的凹槽是 在从光纤束12的发射端12a发射并穿过狭缝16的光的光路上沿水平方向排列的沟槽密度大于第一衍射光栅23的沟槽密度; 以及沿着垂直方向延伸的多个阳极53在水平方向上布置的光电倍增管30。

    Spectroscopic device
    48.
    发明申请
    Spectroscopic device 有权
    光谱仪

    公开(公告)号:US20040239930A1

    公开(公告)日:2004-12-02

    申请号:US10482779

    申请日:2004-07-26

    Inventor: Shirou Sakai

    Abstract: A spectroscopic system according to the present invention 10 comprises: an optical fiber bundle 12 whose emitting end 12a is arranged in a vertical direction; a slit 16 which is arranged so as to oppose the emitting end 12a of the optical fiber bundle 12; spectroscopic element arrangement means 20 which can switchably arrange either a first diffraction grating 23 in which grooves extending along the vertical direction are arranged in a horizontal direction at a predetermined groove density, or a second diffraction grating 24 in which grooves extending along the vertical direction are arranged in the horizontal direction at a groove density larger than that of the first diffraction grating 23, on an optical path of light which is emitted from the emitting end 12a of the optical fiber bundle 12 and passes through the slit 16; and a photomultiplier tube 30 in which a plurality of anodes 53 extending along the vertical direction are arranged in the horizontal direction.

    Abstract translation: 根据本发明的光谱系统10包括:发光端12a沿垂直方向布置的光纤束12; 与光纤束12的发射端12a相对配置的狭缝16; 分光元件布置装置20,其可切换地布置沿着垂直方向延伸的凹槽的第一衍射光栅23以预定凹槽密度沿水平方向布置;或第二衍射光栅24,其中沿着垂直方向延伸的凹槽是 在从光纤束12的发射端12a发射并穿过狭缝16的光的光路上沿水平方向排列的沟槽密度大于第一衍射光栅23的沟槽密度; 以及沿着垂直方向延伸的多个阳极53在水平方向上布置的光电倍增管30。

    Wide field-of-view imaging spectrometer
    49.
    发明授权
    Wide field-of-view imaging spectrometer 失效
    宽视野成像光谱仪

    公开(公告)号:US5768040A

    公开(公告)日:1998-06-16

    申请号:US702854

    申请日:1996-08-26

    CPC classification number: G01J3/02 G01J3/0208 G01J3/0221 G01J3/2823

    Abstract: The invention provides an imaging spectrometer that provides a wide field-of-view camera and spectrometer for spectral imaging of a large two-dimensional area of the Earth's surface from an orbiting satellite or airplane. The wide field-of-view camera fore-optics includes spherical optical elements arranged monocentrically. The spectrometer includes an all-reflective coupling design that transfers the curved optical image to one or more compact imaging spectrometers. The spectrometers preferably comprise a spherical convex holographic grating and associated reflective optics for dispersing a collimated optical beam into its spectral components and focusing the spectral image onto a planar detector array. The instrument described herein is designed to operate in a "pushbroom" fashion, that is, the forward motion of the satellite or airplane generates the spatial dimension of the resulting image. Because of its compact optical design and because no additional scanning equipment is required to scan the Earth's surface, the instrument is very compact and light-weight.

    Abstract translation: 本发明提供了一种成像光谱仪,其提供用于从轨道卫星或飞机对地球表面的大二维区域的光谱成像的宽视场相机和光谱仪。 宽视场摄像机前视镜包括单眼布置的球面光学元件。 光谱仪包括全反射耦合设计,将弯曲光学图像传输到一个或多个紧凑型成像光谱仪。 光谱仪优选地包括球形凸全息光栅和相关联的反射光学器件,用于将准直光束分散到其光谱分量中并将光谱图像聚焦到平面检测器阵列上。 本文描述的仪器被设计为以“推动式”方式操作,即,卫星或飞机的向前运动产生所得图像的空间维度。 由于其紧凑的光学设计,并且由于不需要额外的扫描设备来扫描地球表面,所以该仪器非常紧凑和重量轻。

    Solar monochromator for filter calibration
    50.
    发明授权
    Solar monochromator for filter calibration 失效
    用于过滤器校准的太阳能单色仪

    公开(公告)号:US5231461A

    公开(公告)日:1993-07-27

    申请号:US805244

    申请日:1991-12-09

    Abstract: A method and system for calibrating color filters employed in polychromatic imaging of a subject includes a scanning mirror (28), telescope (30), filters (104), and a detector array (60) employed for both imaging and calibration processes. A bundle (44) of optical fibers is employed for producing a slit-shaped beam of solar rays which are collimated and applied to a diffraction grating plate (54) or prism (72) to produce a set of dispersed solar rays. The dispersion is based on color. In one position of the scanning mirror, rays from a subject (12) to provide an image are directed through the telescope and scanned across the filters (104) and detectors (102). In another position of the scanning mirror, the set of dispersed solar rays is scanned past the filters and the detectors. Imaging data outputted by the detectors is collected for producing an image (112) of the subject. Data of the dispersed rays is collected for calibrating the color filters. A stored reference color profile (92) of each filter is correlated with the calibration data ( 90) to obtain a set of correction terms which are employed for altering the image data to compensate for any drift in the color characteristics of the filters. A broad band detector detects Fraunhofer spectral lines to serve as a reference standard wavelength for alignment of the system.

    Abstract translation: 用于校准用于对象的多色成像中的滤色器的方法和系统包括用于成像和校准过程的扫描镜(28),望远镜(30),滤光片(104)和检测器阵列(60)。 使用光纤束(44)产生准直并施加到衍射光栅板(54)或棱镜(72)的太阳光线的狭缝状光束,以产生一组分散的太阳光线。 色散基于颜色。 在扫描镜的一个位置,来自被摄体(12)的用于提供图像的光线被引导通过望远镜并扫过过滤器(104)和检测器(102)。 在扫描反射镜的另一个位置,分散的太阳射线被扫描通过过滤器和检测器。 收集由检测器输出的成像数据,以产生被摄体的图像(112)。 收集分散光线的数据以校准滤色器。 每个滤波器的存储的参考颜色分布(92)与校准数据(90)相关联,以获得用于改变图像数据以补偿滤波器的颜色特性中的任何漂移的校正项集合。 宽带检测器检测弗劳恩霍夫谱线,用作系统对准的参考标准波长。

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