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    Method and apparatus for measuring parameters of optical anisotropy
    2.
    发明授权
    Method and apparatus for measuring parameters of optical anisotropy 有权

    公开(公告)号：US09989454B2

    公开(公告)日：2018-06-05

    申请号：US14504426

    申请日：2014-10-02

    申请人： Axometrics, Inc.

    发明人： Matthew H. Smith ,  Yang Zou

    IPC分类号： G01N21/21 ,  G01N21/23 ,  G01N21/19

    CPC分类号： G01N21/21 ,  G01N21/19 ,  G01N21/23

    摘要： Methods and systems are provided to measure the optical anisotropy properties of a film on glass or other substrates. This technique is suitable for production environments, and is not strongly affected by the TFT or CF active area on LCD panels, even for very high pixel density displays. A method is provided for measuring a magnitude and orientation of optical anisotropy. These methods and systems include an optical anisotropy measurement apparatus for measuring anisotropic materials in a reflection or transmission configuration. The methods and systems may measure a Mueller matrix, diattentuation orientation, or retardance of a sample at one or more rotation angles to calculate anisotropic magnitude and orientation.

    METHOD FOR CALIBRATING A POLARISATION AXIS MEASURING DEVICE AND METHOD FOR DETERMINING POLARISATION AXES OF SPECTACLE LENSES FOR A POLARISATION AXIS MEASURING DEVICE
    3.
    发明申请
    METHOD FOR CALIBRATING A POLARISATION AXIS MEASURING DEVICE AND METHOD FOR DETERMINING POLARISATION AXES OF SPECTACLE LENSES FOR A POLARISATION AXIS MEASURING DEVICE 审中-公开

    公开(公告)号：US20180052074A1

    公开(公告)日：2018-02-22

    申请号：US15558106

    申请日：2016-04-15

    申请人： RODENSTOCK GMBH

    发明人： Stephan TRUMM ,  Johann AUER ,  Werner MÜLLER

    IPC分类号： G01M11/02

    CPC分类号： G01M11/0207 ,  G01M11/0221 ,  G01N21/19 ,  G01N21/21 ,  G01N21/274 ,  G01N21/278

    摘要： In a method for calibrating a polarization axis measuring device, both flat sides of a calibration element in a polarization axis measuring device are irradiated with polarized light, wherein the method involves aligning in each case at least one polarization direction of the light in a first and/or second rotational position with a principal axis in a predefined angular relationship with respect to a polarization axis of the calibration element. Determining the rotational position of an axis of the calibration element is carried out by determining an angle bisector between the first and second rotational positions of the polarization direction of the incident light. The method involves assigning a predefined angle value for the rotational position of the principal axis of the polarization direction for which the latter is in the predefined angular relationship with respect to the axis of the calibration element inserted as intended. Furthermore, the invention relates to a method for determining polarization axes of spectacle lenses, to a calibration element, and to a polarization axis measuring device comprising a calibration element.

    System and method of analysis by determining a depolarizing or dichroic character of an object
    5.
    发明授权
    System and method of analysis by determining a depolarizing or dichroic character of an object 有权

    公开(公告)号：US09835546B2

    公开(公告)日：2017-12-05

    申请号：US14128793

    申请日：2012-06-18

    申请人： Mehdi Alouini ,  Julien Fade

    发明人： Mehdi Alouini ,  Julien Fade

    IPC分类号： G01N21/21 ,  G01N21/19

    CPC分类号： G01N21/21 ,  G01N21/19 ,  G01N2021/217

    摘要： An analysis system comprises a transmitting device (1.1) and a receiving device (1.2). The transmitting devices comprises means for illuminating an object (1.3), or a part of the object, by a first light beam (1.8) consisting of signals with two distinct frequencies and first orthogonal polarisation states. The receiving device comprises means (1.6) for detecting, in a second light beam with second polarisation states and resulting from the illumination of the object to be analysed by the first light beam, a signal at a beat frequency equal to a difference between the two frequencies of the first light beam; and means (1.7) for obtaining information relating to the depolarising or dichroic character of the object, or of the part of the object, according to the detection or not of a signal at the beat frequency.