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    SIGNAL ACQUISITION AND PROCESSING SYSTEM FOR REDUCED OUTPUT SIGNAL DRIFT IN A SPECTROPHOTOMETRIC INSTRUMENT
    123.
    发明公开
    SIGNAL ACQUISITION AND PROCESSING SYSTEM FOR REDUCED OUTPUT SIGNAL DRIFT IN A SPECTROPHOTOMETRIC INSTRUMENT 审中-公开
    设备，用于顺序获取和处理照片谱仪信号，以降低输出信号的漂移

    公开(公告)号：EP1183522A1

    公开(公告)日：2002-03-06

    申请号：EP00936460.5

    申请日：2000-06-01

    Applicant: HUTCHINSON TECHNOLOGY, INC.

    Inventor： GRITSENKO, Sergey, I. ,  LEWANDOWSKI, Mark, S. ,  MYERS, Dean, E.

    IPC: G01N21/31

    CPC classification number: G01N21/31 ,  A61B5/14552 ,  G01J3/0232

    Abstract: A spectrophotometric instrument including a source of measurement light wavelengths, a probe, a plurality of send fibers coupled to the measurement light signal source and a plurality of receive fibers for receiving light including the measurement light signals. The instrument also has reference signal optics coupled to the measurement light signal, a detector for generating electrical signals representative of the measurement signals and the reference signals optical paths for coupling the measurement signal from the receive fibers and the reference signal portion from the reference signal optics to the detector, and an optical path control for selectively allowing either the measurement signal portion or the reference signal portion to the detector. This enables the detector to output a reference value when the reference signal is coupled to the detector and a measurement value when the measurement signal is coupled to the detector.

    OPTICAL SHUTTER FOR SPECTROSCOPY INSTRUMENT
    124.
    发明公开
    OPTICAL SHUTTER FOR SPECTROSCOPY INSTRUMENT 有权
    光密闭盖FOR分光单元

    公开(公告)号：EP1169623A1

    公开(公告)日：2002-01-09

    申请号：EP01905489.9

    申请日：2001-02-15

    Applicant: Varian Australia Pty. Ltd.

    Inventor： HAMMER, Michael, Ron ,  MASTERS, Martin, Keith ,  CAMPBELL, Stewart, Ralph ,  LAYTON, Peter, George

    IPC: G01J3/02 ,  G01N21/27 ,  G01N21/31

    CPC classification number: G01J5/62 ,  G01J3/02 ,  G01J3/0213 ,  G01J3/0227 ,  G01J3/0229 ,  G01J3/0232 ,  G01J3/1809 ,  G01J3/2803 ,  G01J2003/1828 ,  G01N21/27 ,  G01N21/31

    Abstract: Spectroscopy apparatus for spectrochemical analysis of a sample having an excitation source (60) for providing spectral light (62) of the sample for analysis. The spectral light (62) is analysed via an optical system (64-66-68) that includes a polychromator (70, 74-80) and solid state multielement array detector (82). The elements (i.e. pixels) of the detector (82) are serially read by means (84) to provide light intensity measurements as a function of wavelength. A problem is that the elements (pixels) of the detector (82) continue to accumulate charge during the serial read-out. This is avoided by providing an optical shutter (72) for blocking the spectral light (62) whilst elements (pixels) of the detector (82) are being serially read. Shutter (72) has a piezoelectric actuator which is preferably a bimorph mounted as a cantilever. It is preferably located adjacent to the entrance aperture (70) of the polychromator. Bimorph structures for the actuator and drive and protective circuit arrangements are also disclosed.

    Optical spectrometer for detecting spectra in seperate ranges
    126.
    发明公开
    Optical spectrometer for detecting spectra in seperate ranges 失效
    Optisches Spektrometer zur Erfassung von Spektren in unterschiedlichen Bereichen

    公开(公告)号：EP0744599A2

    公开(公告)日：1996-11-27

    申请号：EP96107288.1

    申请日：1996-05-08

    Applicant: The Perkin-Elmer Corporation

    Inventor： Barnard, Thomas W.

    IPC: G01J3/28

    CPC classification number: G02B27/4244 ,  G01J3/02 ,  G01J3/0229 ,  G01J3/0232 ,  G01J3/18 ,  G01J3/24 ,  G01J3/32 ,  G02B5/1814

    Abstract: A spectrometer includes a pair of crossed reflective gratings to effect a spectrally dispersed beam that is focussed to an array detector. The second grating is a plural grating with a surface formed of a first portion and a second portion. The first portion has a groove density for effecting ultraviolet in the dispersed beam. The second portion has a groove density for effecting visible radiation in the dispersed beam. A shutter blocks or exposes the second portion of the grating surface so as to select the first spectral range or the second spectral range for detection. The plural grating surface preferably may be contoured to compensate for aberrations in focussing of the beam to the detector. A computer may be used for selecting spectral lines for analysis, particularly selecting such lines in the second range that are not interfered with by the first range.

    Abstract translation: 光谱仪包括接收源辐射的初始色散装置，以初始光谱的形式实现光辐射，接受初始光谱的许多色散光栅并与初始色散装置交叉以实现光谱分散的光束，以及检测器装置 包括接收光束的光电检测器的二维阵列用于光谱检测。 色散光栅具有包括两个表面部分的光栅表面。 第一部分具有用于在第一光谱范围内实现分散光束的第一凹槽配置，并且第二部分具有用于在与第一光谱范围不同的第二光谱范围内实现分散光束的第二凹槽配置。

    RANDOM ACCESS MONOCHROMATOR
    127.
    发明公开
    RANDOM ACCESS MONOCHROMATOR 失效
    单色的直接访问。

    公开(公告)号：EP0553279A1

    公开(公告)日：1993-08-04

    申请号：EP91920372.0

    申请日：1991-10-15

    Applicant: ML TECHNOLOGY VENTURES, L.P.

    Inventor： MARIANIK, Charles, G., J. ,  ZARATE, Carlos, E. ,  LEVY, Gilbert, M.

    IPC: G01J3

    CPC classification number: G01J3/02 ,  G01J3/0232 ,  G01J3/0256 ,  G01J3/12 ,  G01J2003/1278 ,  G01J2003/1286 ,  G01N2201/067

    Abstract: Un monochromateur à accès sélectif est décrit. Ce dispositif ne contient pas d'éléments mécaniques et élimine la nécessité de balayer séquentiellement les longueurs d'ondes de la lumière contenue dans un spectre lumineux pour sélectionner une ou des longueur(s) d'ondes voulues dans le spectre. Le dispositif comprend des moyens de commutation de grande vitesse (16), permet de sélectionner simultanément des longueurs d'ondes et des largeurs de bande multiples, et possède la capacité de corriger la non-linéarité dans des prismes, causée par la dispersion non-linéaire ou de second ordre de la lumière.

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