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    Measurement method
    131.
    发明公开
    Measurement method 审中-公开
    测量方法

    公开(公告)号：EP1813988A3

    公开(公告)日：2007-12-05

    申请号：EP07001652.2

    申请日：2007-01-25

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Shiode, Yoshihiro

    IPC: G03F7/20 ,  G01M11/02

    CPC classification number: G03F7/706 ,  G01J4/00 ,  G01J2009/0261 ,  G03F7/70566

    Abstract: A method for irradiating onto a target optical system plural linearly polarized rays having different polarization directions, and for measuring a polarization characteristic of the target optical system including a birefringence amount R and a fast axis Φ includes the steps of irradiating linearly polarized ray having a polarization direction θ onto the target optical system and obtaining a centroid amount P of the ray that has transmitted through the target optical system, and obtaining the birefringence amount R and the fast axis Φ from P=-R•cos(2θ-Φ) or P=R•cos(2θ-Φ).

    Polarisation interferometer
    135.
    发明公开
    Polarisation interferometer 审中-公开
    Polarisationsinterferometer

    公开(公告)号：EP1288641A1

    公开(公告)日：2003-03-05

    申请号：EP02015154.4

    申请日：2002-07-06

    Applicant: Agilent Technologies Inc. a Delaware Corporation

    Inventor： Rosenfeldt, Harald

    IPC: G01J3/453 ,  G01J3/447 ,  G02B6/27 ,  G02B27/28

    CPC classification number: G01J9/0246 ,  G01J3/447 ,  G01J3/453 ,  G01J9/02 ,  G01J2009/0261 ,  G01M11/331 ,  G02B6/105 ,  G02B27/283

    Abstract: A method and an apparatus for delaying parts of a coherent optical signal beam relative to each other, comprising: a first device (104) for splitting the beam into a first part and a second part, a second device (108) for delaying the second part relative to the first part, a third device (106) for recombining the first and the second part, a fourth device (104,106) for providing the recombined parts with different polarizations.

    Abstract translation: 一种用于相对于彼此延迟相干光信号光束的部分的方法和装置，包括：用于将光束分成第一部分和第二部分的第一装置（104），用于将第二部分延迟第二部分 用于重新组合第一和第二部分的第三装置（106），用于提供具有不同偏振的重组部分的第四装置（104,106）。

    Polarisationsinterferometer
    137.
    发明公开
    Polarisationsinterferometer 失效
    Polarisationsinterferometer。

    公开(公告)号：EP0605391A2

    公开(公告)日：1994-07-06

    申请号：EP94101353.4

    申请日：1990-01-15

    Applicant: BÜHLER AG ,  Bran + Lübbe GmbH

    Inventor： Wagner, Heinz ,  Labhart, Martin ,  Glaus, Ulrich

    IPC: G01J3/453 ,  G01J3/447

    CPC classification number: G01J3/447 ,  G01B2290/70 ,  G01J3/4537 ,  G01J2009/0261

    Abstract: Das Polarisationsinterferometer weist eine Lichtquelle (1), einen Kollimator (2), ein erstes polarisierendes Element (3), ein System von doppelbrechenden Elementen (4,5,6) und ein zweites polarisierendes Element (7) auf, welches das aus dem doppelbrechenden Element (4,5,6) austretende Licht polarisiert und einem Photonendetektor (8) zuführt.
    Das doppelbrechende Element (4,5,6) besteht dabei aus zwei, längs entgegengesetzter Seitenflächen gegeneinander verschiebbar angeordneten, sich zu einem Quader ergänzenden, optischen Keile (5,6) und einer als Kompensator dienenden doppelbrechenden planparallelen Platte (4).
    Die optische Achse des Kompensators (4) ist gegenüber derjenigen der beiden Keile (5,6) in der Ebene senkrecht zum Lichtstrahl um einen endlichen Winkel verdreht, wobei die optischen Achsen der beiden Keile (5,6) übereinstimmen.
    Die optischen Achsen der beiden Polarisatoren (3,7) stehen senkrecht oder parallel zueinander und sind nicht parallel zu den Achsen der beiden Keile (5,6) des doppelbrechenden Elementes (4,5,6) ausgerichtet.
    Ein monochromatischer Lichtstrahl (9) wird in den von der Lichtquelle (1) erzeugten parallen Lichtstrahl eingekoppelt und nach Durchquerung mindestens des doppelbrechenden Elementes (4,5,6) wieder ausgekoppelt und auf einen Photonendetektor (13) geführt.

    Abstract translation: 偏振干涉仪具有光源（1），准直器（2），第一偏振元件（3），双折射（双折射）元件（4,5,6）和第二偏振元件（7）的系统， ，其将从双折射元件（4,5,6）出射的光偏振，并将其提供给光子检测器（8）。 双折射元件（4,5,6）由两个光楔（5,6）组成，它们的纵向相对的侧表面相对于彼此可移位并组成平行六面体，并且具有双折射平面平行板 （4）作为补偿者。 补偿器（4）的光轴相对于垂直于光束的平面中的两个楔形物（5,6）的轴线有限角度扭转，两个楔形物（5,6）的光轴 恰逢。 两个偏振器（3,7）的光轴彼此垂直或平行，并且不平行于双折射元件（4,5,6）的两个楔形物（5,6）的轴线对准。 单色光束（9）耦合到由光源（1）产生的平行光束中，并且在至少穿过双折射元件（4,5,6）之后，再次耦合并被引导到光子检测器 （13）。

    Measurement of size and refractive index of particles using the complex forward-scattered electromagnetic field
    139.
    发明公开
    Measurement of size and refractive index of particles using the complex forward-scattered electromagnetic field 失效
    使用复合前向散射电磁场测量颗粒的尺寸和折射率

    公开(公告)号：EP0464337A3

    公开(公告)日：1993-06-23

    申请号：EP91107213.0

    申请日：1991-05-03

    Applicant: International Business Machines Corporation

    Inventor： Batchelder, John Samuel ,  Taubenblatt, Marc Alan

    IPC: G01N15/02 ,  G01N21/49

    CPC classification number: G01N15/0205 ,  G01J2009/0261 ,  G01N15/1434 ,  G01N21/45 ,  G01N2015/0238

    Abstract: An apparatus is described for classifying particles (30) and includes an optical system for transmitting to a focal plane which includes at least one particle (30), two substantially parallel optical beams (22, 24), the beams (22, 24) being initially mutually coherent but of different polarizations. The beams (22, 24) are displaced and focused in the focal plane. A further optical system is positioned in the path which the beam takes after departing from the focal plane and combines the beams so that a particle-induced phase shift in one beam is manifest by a change in elliptical polarization of the combined beams. A first detector (52) is responsive to the beam's intensity along a first polarization axis to produce a first output and a second detector (54) is responsive to the beams intensity along a second polarization axis to produce a second output. The first and second outputs are added (56) to provide an extinction signal and, in a separate device (218), are subtracted to provide a phase shift signal. The extinction signal and phase shift signal are both fed to a processor (60) which classifies a particle in accordance therewith.

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