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    PHOTODETECTOR ARRANGEMENT FOR MEASURING THE STATE OF POLARIZATION OF LIGHT
    61.
    发明授权
    PHOTODETECTOR ARRANGEMENT FOR MEASURING THE STATE OF POLARIZATION OF LIGHT 失效
    光电探测器装置反映光的测量光的偏振态。

    公开(公告)号：EP0233215B1

    公开(公告)日：1994-09-07

    申请号：EP86904534.4

    申请日：1986-06-18

    Applicant: RESEARCH CORPORATION TECHNOLOGIES, INC.

    Inventor： AZZAM, Rasheed, M. A.

    IPC: G01J4/04

    CPC classification number: G01J4/00 ,  G01J4/04 ,  G01N21/211

    Abstract: A photopolarimeter for the simultaneous measurement of all four Stokes parameters of light. The light beam, the state of polarization of which is to be determined, strikes, at oblique angles of incidence, three photodetector surfaces (D0, D1, D2) in succession, each of which is partially specularly reflecting and each of which generates an electrical signal proportional to the fraction of the radiation it absorbs. A fourth photodetector (D3) is totally light absorbing and detects the remainder of the light. The four outputs thus developed form a 4x1 signal vector I(Boolean not) which is linearly related, I(Boolean not)=A(Boolean not) S(Boolean not), to the input Stokes vector S(Boolean not). Consequently, S(Boolean not) is obtained by S(Boolean not)=A(Boolean not)-1 I(Boolean not). The 4x4 instrument matrix A(Boolean not) must be nonsingular, whichrequires that the planes of incidence of each of the light beams are all different. For a given arrangement of four detectors, A(Boolean not) can be either computed or determinated by calibration.

    Optical spectrum analyzer with high performance measurement function
    63.
    发明公开
    Optical spectrum analyzer with high performance measurement function 失效
    具有高性能测量功能的光谱分析仪

    公开(公告)号：EP0361064A3

    公开(公告)日：1991-01-16

    申请号：EP89115267.0

    申请日：1989-08-18

    Applicant: ANRITSU CORPORATION

    Inventor： Sonobe, Yoji ,  Tanimoto, Takao

    IPC: G01N21/25 ,  G01N21/27 ,  G01J3/00

    CPC classification number: G01J3/28 ,  G01J1/1626 ,  G01J3/447 ,  G01J4/00

    Abstract: A spectroscope device (13) of the dispersion type receives light (a) to be measured and emits it as dispersed light which corresponds to each of wavelengths to be measured. An optical-path switching device (17) directs the dispersed light emitted from the spectro­scope device (13) to pass through first and second paths. A first photoelectric converter (18) receives the light which is directed to pass through the first path by the optical-path switching device (17). A polarizing/separating device (19) poralizes and separates the light, which is directed to pass through the second path by the optical-path switching device (17), into two polarized lights (b, c). Second and third photoelectric converter (20, 21) respectively receive the two polarized lights (b, c) polarized and separated by the polarizing/separating device. An arithmetical process section (25) corrects a first optical spectrum strength according to an output from the first photoelectric converter (18) with at least a ratio of second and third optical spectrum strengths according to outputs from the second and third photo­electric converter (20, 21), to thereby calculate absolute spectrum values of the measured light every wavelength to be measured about the light.

    Polarizing optical element and device using the same
    64.
    发明公开
    Polarizing optical element and device using the same 失效
    使用相同的光学元件和器件偏振

    公开(公告)号：EP0322714A3

    公开(公告)日：1990-10-10

    申请号：EP88121304.5

    申请日：1988-12-20

    Applicant: Kuraray Co., Ltd.

    Inventor： Kawatsuki, Nobuhiro ,  Uetsuki, Masao

    IPC: G02B5/30 ,  G02B5/18 ,  G02B27/44 ,  G11B7/13 ,  G11B7/135 ,  G11B11/10 ,  G01J4/04 ,  G01N21/21

    CPC classification number: G11B7/1353 ,  G01J4/00 ,  G02B27/283 ,  G11B11/10543

    Abstract: A polarizing optical element (7) which comprises a first substrate (7a) having a first surface formed with first and second gratings (7c, 7d) so as to cross relative to each other at a predetermined crossing angle (T), each of which first and second gratings (7c, 7d) has a grating pitch (Λ) equal to or smaller than the wavelength of a laser beam which may be incident upon the polarizing optical element (7). A magneto-optical head system of a type comprising a laser source for emitting and projecting a laser beam on a magneto-optical recording medium and utilizing a magneto-optical effect for reading information, recorded on the magneto-optical recording medium, by the utilization of reflected or transmitted laser beams reflected from or transmitted through the magneto-optical recording medium and utilizing the polarized optical element (7) is also disclosed.

    A detector for detecting polarised radiation
    65.
    发明公开
    A detector for detecting polarised radiation 失效
    斯特劳伦（Detektor zum Nachweis von Polarisierter Strahlung）。

    公开(公告)号：EP0336603A2

    公开(公告)日：1989-10-11

    申请号：EP89302859.7

    申请日：1989-03-22

    Applicant: BRITISH AEROSPACE PUBLIC LIMITED COMPANY

    Inventor： Lawrence, Martin ,  Duffy, Christopher James

    IPC: G01J4/00 ,  G02B5/30

    CPC classification number: G01J4/00

    Abstract: A detector for detecting polarised radiation (24) comprising means (10, 18, 20) for modulating the polarisation of incoming radiation as a function of time which modulating means (10, 18, 20) has one or more opaque regions (19, 22), means (14) for detecting said modulated radiation, means (17) for deriving a reference signal indicative of the frequency of modulation applied to the modulating means (10, 18, 20), which reference signal is derived as a result of said one or more opaque regions (19, 22) on the modulating means (10, 18, 20), and means for ensuring that the reference signal and the resultant polarisation signal are in phase.

    Abstract translation: 一种用于检测偏振辐射（24）的检测器，包括用于调制作为时间的函数的入射辐射的偏振的装置（10,18,20），所述调制装置（10,18,20）具有一个或多个不透明区域（19,22） ），用于检测所述调制辐射的装置（14），用于导出指示施加到调制装置（10,18,20）的调制频率的参考信号的装置（17），该参考信号作为所述调制装置 调制装置（10,18,20）上的一个或多个不透明区域（19,22）以及用于确保参考信号和合成偏振信号同相的装置。

    Optical analysis method and apparatus having programmable rapid random wavelength access
    66.
    发明公开
    Optical analysis method and apparatus having programmable rapid random wavelength access 无效
    光学分析的方法和装置具有可编程快速访问任意波长。

    公开(公告)号：EP0250070A1

    公开(公告)日：1987-12-23

    申请号：EP87303386.4

    申请日：1987-04-16

    Applicant: Bran + Lübbe GmbH

    Inventor： Kemeny, Gabor J. ,  Wetzel, David L.

    IPC: G01N21/47 ,  G01N21/59 ,  G01N21/35

    CPC classification number: G01N21/85 ,  G01J3/1256 ,  G01J4/00 ,  G01J2001/4242 ,  G01N21/3563 ,  G01N21/4738 ,  G01N21/4785 ,  G01N2021/1742 ,  G01N2021/4742 ,  G01N2201/065 ,  Y10S359/90

    Abstract: The optical reflectance or transmittance concentration analyzer includes an acousto-optical tunable filter (AOTF) with a pair of crossed polarizers (3, 5) to select one of the tuned monochromatic light beams that pass from a light source (1) through the AOTF. The AOTF is tuned by a computer controlled digital-to-analog converter (12) through a tunable sweep oscillator (11). To obtain rapid wavelength change along with electronic chopping or wavelength modulation, the digital-to-analog converter output is added to the output of a high speed signal generator (18). The modulated light is conducted directly or through a fiber optic cable to the location of the optical measurement and impinges upon the sample where it is reflected or transmitted. The emerging light is collected onto detector(s) (10). The measurement time interval can be distributed among the required wavelengths or wavelength pairs according to an unequal scheme to decrease the error of the result in a calibration equation. The apparatus is particularly adaptable for use as an on-line concentration monitor in industrial process control because of tis stability, efficiency and ability to perform quick analyses.

    Abstract translation: 的光反射率或透射率浓度分析仪包括在声光可调谐滤波器（AOTF）具有一对交叉的偏振器的（3,5）以选择调谐单色光光束之一没有来自光源（1）通过AOTF通过。 的AOTF是通过可调谐扫描振荡器（11）的计算机控制的数字 - 模拟转换器（12）调整。 为了获得快速波长变化地连同电子斩波或波长调制，该数字 - 模拟转换器的输出被添加到高速信号发生器（18）的输出。 被调制的光直接地或通过光纤电缆引导到光学测量的位置和在那里被反射式或反式mitted样品撞击。 出射光聚光到检测器（一个或多个）（10）。 在测量时间间隔可以以不相等的方案gemäß到降低结果的错误在校准方程所需的波长或波长对之间进行分配。 该装置是用作因为TIS稳定性，效率和执行快速的分析能力的工业过程控制的在线浓度监测器特别适用。

    Zweistrahl-Echtzeitpolarimeter
    67.
    发明公开
    Zweistrahl-Echtzeitpolarimeter 失效
    两束Echtzeitpolarimeter

    公开(公告)号：EP0179016A1

    公开(公告)日：1986-04-23

    申请号：EP85730130.3

    申请日：1985-09-20

    Applicant: Distl, Richard ,  Schmidt, Ulrich

    Inventor： Distl, Richard ,  Schmidt, Ulrich

    IPC: G01J4/04 ,  G01N21/21

    CPC classification number: G01J4/00 ,  G01J4/04 ,  G01N21/21

    Abstract: Die Erfindung betrifft eine Vorrichtung zur Messung der Drehung der Schwingungsebene von linear polarisierter elektromagnetischer Strahlung bzw. davon abgeleiteter physikalischer Größen. Um die Meßgenauigkeit und die Funktion einer derartigen Vorrichtung zu verbessern, wird im wesentlichen vorgeschlagen, daß die elektromagnetische Strahlung vor der Wechselwirkung mit der zu untersuchenden Substanz in einen Meßstrahlengang M und einen Referenzstrahlengang R aufgespalten wird, daß dann beide Strahlengänge auf Strahlteilen der Analysatoren treffen, daß den Analysatoren photoempfindliche Fühler (7, 8, 11 and 12) nachgeschaltet sind, die mit Kurzzeitspeichern und Datenauswertungseinrichtungen verbunden sind.

    Abstract translation: 本发明涉及一种用于测量线偏振电磁辐射的振荡平面的旋转或由其导出的物理量的装置。 为了提高测量精度，提出这样的装置的功能，基本上，与被检查物质相互作用之前的电磁辐射被分成测量光束M和参考光R那然后满足在分析仪的光束部分二者光束路径， 分析仪光敏传感器（7,8,11和12）连接到下游，它们连接到短期存储和数据评估设备。

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