OPTICAL PATH SWITCHING BASED DIFFERENTIAL ABSORPTION RADIOMETRY FOR SUBSTANCE DETECTION
    121.
    发明申请
    OPTICAL PATH SWITCHING BASED DIFFERENTIAL ABSORPTION RADIOMETRY FOR SUBSTANCE DETECTION 审中-公开
    基于光学路径切换的差分吸收放射性检测用于物质检测

    公开(公告)号:WO00062041A1

    公开(公告)日:2000-10-19

    申请号:PCT/US1999/026656

    申请日:1999-11-10

    CPC classification number: G01J3/08 G01N21/314 G01N21/3518

    Abstract: A system and method are provided for detecting one or more substances. An optical path switch divides sample path radiation into a time of alternating first and second polarized components. The first polarized components are transmitted along a first optical path and the second polarized components along a second optical path. A first gasless optical filter train filters the first polarized components to isolate at least a first wavelength band thereby generating first filtered radiation. A second gasless optical filter train filters the second polarized components to isolate at least a second wavelength band thereby generating second filter radiation. Spectral absorption of a substance of interest is different at the first wavelength band as compared to the second wavelength band. A beam combiner combines the first and the second filtered radiation to form a combined beam of radiation. A detector is disposed to monitor magnitude of at least a portion of the combined beam alternately at the first wavelength band and the second wavelength band as an indication of the concentration of the substance in the sample path.

    Abstract translation: 提供了用于检测一种或多种物质的系统和方法。 光路开关将采样路径辐射分为交替的第一和第二偏振分量的时间。 第一偏振分量沿着第一光路传播,第二偏振分量沿第二光路传输。 第一无气体光学滤波器组对第一极化分量进行滤波以隔离至少第一波长带,从而产生第一滤波辐射。 第二无气体光学滤波器组对第二极化分量进行滤波以隔离至少第二波长带,从而产生第二滤波器辐射。 与第二波长带相比,感兴趣的物质的光谱吸收在第一波长带是不同的。 光束组合器组合第一和第二滤波辐射以形成组合的辐射束。 设置检测器以便以第一波长带和第二波长带交替地监测组合光束的至少一部分的大小作为样品路径中物质浓度的指示。

    IN-SITU INFRA-RED & ULTRA-VIOLET PHOTOMETER
    123.
    发明申请

    公开(公告)号:WO2020260448A1

    公开(公告)日:2020-12-30

    申请号:PCT/EP2020/067803

    申请日:2020-06-25

    Applicant: PROTEA LTD

    Abstract: The invention relates to a photometer (30) for analysing the composition of a sample gas. The photometer comprises an infra-red (IR) source (20) configured to direct a first plurality of pulses (40) of IR radiation through the sample gas to an IR detector (26), at least two of the first plurality of pulses being of different wavelength. The photometer further comprises an ultraviolet (UV) source (32) configured to generate a second plurality of pulses (38) of UV radiation for conveyance to a UV detector (36), at least two of the second plurality of pulses being of different wavelength. A path selection arrangement (22, 42-50) is configured to selectively convey different ones of the second plurality of pulses (38) to one of the sample gas and the UV detector (36). The photometer further comprises processing circuitry coupled to the IR source (20), the UV source (32), the IR detector (26), the UV detector (36) and the path selection arrangement (22, 42-50). The processing circuitry is configured to (i) select the wavelength to be used for a given UV pulse of the second plurality of pulses (38), (ii) receive a plurality of detection signals from each of the IR detector (26) and the UV detector (36) and (iii) based on the detection signals, determine a concentration of at least one component of the sample gas. A method for analysing the composition of a sample gas is also disclosed.

    SHUTTER ASSEMBLY WITH CALIBRATION MATERIAL
    125.
    发明申请
    SHUTTER ASSEMBLY WITH CALIBRATION MATERIAL 审中-公开
    具有校准材料的快门总成

    公开(公告)号:WO2012109177A1

    公开(公告)日:2012-08-16

    申请号:PCT/US2012/024057

    申请日:2012-02-07

    Applicant: DIRAMED LLC

    CPC classification number: G01J3/0297 G01J3/0232 G01J3/28 G01J3/44 G01N21/274

    Abstract: A shutter assembly for use with a spectrometer having at least one source of optical radiation such as at least one laser capable of generating an excitation light beam having an illumination path. The shutter assembly includes a shutter having at least one of (i) at least one calibration material capable of generating a consistent spectrum within wavelengths utilizable by the spectrometer and (ii) a mirror capable of diverting at least one of the illumination path and a collection path relative to a calibration standard capable of generating a consistent spectrum within wavelengths utilizable by the spectrometer. The shutter assembly further includes a mechanism capable of moving the shutter into at least a first position in the path of the light beam and a second position out of the path of the light beam to enable a sample to be analyzed. When the shutter is moved into the first position, at least one of (a) the light beam strikes the calibration material as desired yet remains blocked from further travel, (b) the light beam is diverted by the mirror to the calibration standard, and (c) the collection path is diverted by the mirror to communicate with the calibration standard while the illumination path is blocked.

    Abstract translation: 一种与光谱仪一起使用的快门组件,其具有至少一个光学辐射源,例如能够产生具有照明路径的激发光束的至少一个激光器。 快门组件包括具有以下至少一个的快门:(i)能够在由光谱仪可利用的波长内产生一致的光谱的至少一种校准材料,和(ii)能够转移照明路径和集合中的至少一个的反射镜 相对于能够在由光谱仪可利用的波长内产生一致光谱的校准标准。 快门组件还包括能够将快门移动到光束的路径中的至少第一位置和离开光束的路径的第二位置以使得能够分析样本的机构。 当快门移动到第一位置时,(a)光束中的至少一个光束根据需要撞击校准材料,但仍然被阻止进一步行进,(b)光束被镜子转移到校准标准,以及 (c)当照明路径被阻挡时,收集路径被反射镜转向以与校准标准通信。

    MIRROR-TILT-INSENSITIVE FOURIER TRANSFORM SPECTROMETER
    126.
    发明申请
    MIRROR-TILT-INSENSITIVE FOURIER TRANSFORM SPECTROMETER 审中-公开
    反射光敏感变换光谱仪

    公开(公告)号:WO2010088023A2

    公开(公告)日:2010-08-05

    申请号:PCT/US2010020634

    申请日:2010-01-11

    Abstract: Methods and designs for providing reduced sensitivity to mirror tilt in Fourier transform spectrometers are disclosed. According to an embodiment for two-directional tilt compensation, the FT spectrometer can include a beam splitter positioned to receive an incoming beam from a light source and split the incoming beam into a first sub-beam and a second sub-beam, a comer-cube retroreflector positioned to receive the first sub-beam from the beam splitter, a dual reflective mirror positioned to receive the first sub-beam from the corner-cube retroreflector at one surface and the second sub-beam at the other surface. An optical path delay can be created using a set of mirrors, tilting the beam splitter and/or a glass cube.

    Abstract translation: 公开了在傅里叶变换光谱仪中提供对镜面倾斜的灵敏度降低的方法和设计。 根据用于双向倾斜补偿的实施例,FT光谱仪可以包括分束器,其被定位成接收来自光源的入射光束,并将入射光束分成第一子光束和第二子光束, 立方体后向反射器被定位成从分束器接收第一子光束;双反射镜,定位成在一个表面处接收来自角立方后视反射器的第一子光束,而在另一个表面处接收第二子光束。 可以使用一组反射镜,倾斜分束器和/或玻璃立方体来产生光路延迟。

    非破壊分光測定器
    127.
    发明申请
    非破壊分光測定器 审中-公开
    非破坏性光谱仪

    公开(公告)号:WO2005001400A1

    公开(公告)日:2005-01-06

    申请号:PCT/JP2004/008198

    申请日:2004-06-11

    Abstract:  光の減衰を伴わずに測定対象に照射する非破壊分光測定器を提供する。  円周上に円周の中心に向けて配置された位置検出用発光手段155および異なる発光波長を有する複数の発光手段153と、円周の中心に位置し発光手段からの光を測定対象60に向けて反射する鏡71と、測定対象に照射し測定対象内部で拡散反射した光の強度を検出する反射光検出手段172とを有し、異なる波長の吸光度から測定対象の成分の大きさを測定する非破壊分光測定器において、前記鏡71が、ステッピングモータによって駆動される回転体73に取り付けられ、位置検出用発光手段155に近接して位置検出用受光素子156を設け、回転体73のスリット731から回転体内部空間に導入された光が内部空間で乱反射してスリット731を経由して位置検出用受光素子156に到達したことを検出して回転体の原点を決定する。

    Abstract translation: 本发明提供了一种适用于照射测量对象而不引起光衰减的非破坏性光谱测量仪器。 用于从不同波长的吸光度测量测量对象的分量的非破坏性光谱仪包括位置检测光发射装置(155)和具有不同发光波长的多个发光装置(153) 设置在圆周上并且指向圆周的中心;位于圆周中心的反射镜(71),用于将来自发光装置的光反射到测量对象(60);反射光检测装置(172) ),用于检测辐射到测量对象的光的强度并在测量对象内被扩散和反射,其中反射镜(71)附接到由步进电机驱动的旋转体(73),位置检测光接收元件 156)安装在位置检测光发射装置(155)附近,该布置使得检测到光介绍 从旋转体(73)中的狭缝(731)向旋转体的内部空间扩散地反射到内部空间中,经由旋转体(731)中的狭缝(731)到达位置检测光接收元件 由此确定旋转体的原点。

    BORON-CARBIDE SOLID STATE NEUTRON DETECTOR AND METHOD OF USING SAME
    129.
    发明申请
    BORON-CARBIDE SOLID STATE NEUTRON DETECTOR AND METHOD OF USING SAME 审中-公开
    硼碳化物固体中子探测器及其使用方法

    公开(公告)号:WO00033106A1

    公开(公告)日:2000-06-08

    申请号:PCT/US1999/028038

    申请日:1999-11-24

    CPC classification number: G01J3/08

    Abstract: A boron carbide solid state neutron detector (10) includes a layer (12) of boron carbide wherein the boron carbide layer is an electrically active part of the detector. A sensing mechanism which may be inherent to the boron carbide layer detects changes in the boron carbide layer caused by the interception of neutrons. In a method of using the detector (10) a monitoring device coupled to the sensing mechanism records the detected changes.

    Abstract translation: 碳化硼固态中子检测器(10)包括碳化硼层(12),其中碳化硼层是检测器的电活性部分。 可能是碳化硼层固有的感测机构检测由截取中子引起的碳化硼层的变化。 在使用检测器(10)的方法中,耦合到感测机构的监测装置记录检测到的变化。

    SPECTROSCOPIC ANALYSIS
    130.
    发明申请
    SPECTROSCOPIC ANALYSIS 审中-公开
    光谱分析

    公开(公告)号:WO98040708A1

    公开(公告)日:1998-09-17

    申请号:PCT/AU1998/000143

    申请日:1998-03-06

    CPC classification number: G01N21/72 G01J3/10 G01J3/42 G01N21/31 G01N2021/3148

    Abstract: Spectroscopic apparatus for sequentially detecting the presence of a plurality of elements in a sample. The apparatus includes a plurality of lamps (1a-1e) each of which is for detecting the presence of a respective at least one predetermined element in a plurality of elements. A beam selector (13) which may be a mirror, is operative to direct a beam of light (7) from any one of lamps (1a-1e) to an analysis zone (8). The apparatus includes a monochromator (15), the drive (24) of which is under the control of a controller (25) with a memory device (26) linked thereto. Predetermined settings for the monochromator corresponding to the peak settings for each wavelength of interest can be stored in memory (26) for subsequently driving the monochromator to those settings without the need to undertake a peaking routine for each elemental analysis, thereby saving analyses time. The lamp and beam selector arrangement of the apparatus substantially reduces the time required to change from one lamp to another thereby facilitating sequential spectroscopic multi-element analyses of samples. Apparatus which uses a flame for atomising a sample includes valves (19 and 20) for controlling the flow of oxidant (17) and fuel (18) gases to a spray chamber (23) and then analysis zone (8), the oxidant (17) being supplied via a nebuliser (22). The valves (19 and 20) are preferably high speed oscillating valves having an adjustable on to off time ratio under the control of a microprocessor (21). The oscillating valves (19 and 20) allow rapid changes to be made to the oxidant and fuel gas flows, thereby also saving analysis time.

    Abstract translation: 用于顺序地检测样品中多个元素的存在的光谱仪。 该装置包括多个灯(1a-1e),每个灯用于检测多个元件中相应的至少一个预定元件的存在。 可以是反射镜的光束选择器(13)可操作以将光束(7)从任何一个灯(1a-1e)引导到分析区(8)。 该装置包括一个单色器(15),其驱动器(24)处于与其相连的存储装置(26)的控制器(25)的控制下。 对应于每个感兴趣波长的峰值设置的单色仪的预定设置可以存储在存储器(26)中,用于随后将单色仪驱动到那些设置,而不需要对每个元素分析进行​​峰值例程,从而节省分析时间。 设备的灯和光束选择器装置大大减少了从一个灯变为另一个灯所需的时间,从而便于样品的顺序光谱多元分析。 使用火焰雾化样品的装置包括用于控制氧化剂(17)和燃料(18)的气体流到喷雾室(23),然后分析区域(8),氧化剂(17)的阀门(19和20) )通过雾化器(22)供应。 阀(19和20)优选地是在微处理器(21)的控制下具有可调节的关断时间比的高速摆动阀。 振动阀(19和20)允许对氧化剂和燃料气体进行快速变化,从而也节省了分析时间。

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