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    • 5. 发明授权
    • Magneto-optically modulating system for monitoring relative relationship
between an object and a magneto-optic effect element
    • 用于监测物体与磁光效应元件之间的相对关系的磁光调制系统
    • US06072174A
    • 2000-06-06
    • US129229
    • 1998-08-05
    • Masayuki TogawaMorio KobayashiMasahiro Kambara
    • Masayuki TogawaMorio KobayashiMasahiro Kambara
    • G01D5/26G01B11/00G01D5/34G01D5/58G01P3/486G01P3/487G01P3/488G02F1/09G02F1/01
    • G01P3/488G01D5/344G01D5/58G01P3/486G02F1/09
    • A method of magneto-optically modulating light comprises the steps of linearly polarizing the light on its transmission path, and placing a magneto-optic effect element on the transmission path of the polarized light with the spontaneous magnetization direction of the magneto-optic effect element being substantially parallel with the transmission path. The plane of polarization of the polarized light is rotated about the transmission path in the absence of the magnetic field applied to the magneto-optic effect element having the polarized light pass therethrough. The method further comprises the step of applying the magnetic field to the magneto-optic effect element with its internal magnetization being oriented in a direction perpendicular to the transmission path. The plane of polarization of the polarized light is maintained in its initial state in the presence of the magnetic field applied to the magneto-optic effect element having the polarized light pass therethrough. When the object approaches the magneto-optic effect element, the applied magnetic field is modulated to have the direction of the internal magnetization of the magneto-optic effect element varied. As a result, the plane of polarization of the polarized light is rotated about the transmission path from its initial state when the polarized light passes through the magneto-optic effect element. According to the method, the light can be modulated by way of the object inoperable to apply the magnetic field to the magneto-optic effect element but capable of modulating the magnetic field of the magneto-optic effect element.
    • 磁光调制光的方法包括以下步骤:使光在其传输路径上线性偏振,并将磁光效应元件放置在偏振光的传输路径上,其中磁光效应元件的自发磁化方向为 基本上与传输路径平行。 在没有施加到具有偏振光通过的磁光效应元件的磁场的情况下,偏振光的偏振面绕传输路径旋转。 该方法还包括将磁场施加到磁光效应元件的步骤,其内部磁化在垂直于传输路径的方向上取向。 在施加到具有偏振光通过的磁光效应元件的磁场的存在下,偏振光的偏振面保持在其初始状态。 当物体接近磁光效应元件时,所施加的磁场被调制成具有变化的磁光效应元件的内部磁化方向。 结果,当偏振光通过磁光效应元件时,偏振光的偏振面从其初始状态围绕传输路径旋转。 根据该方法,光可以通过不能操作的物体进行调制,以将磁场施加到磁光效应元件,但是能够调制磁光效应元件的磁场。
    • 6. 发明授权
    • Magneto-optically modulating system
    • 磁光调制系统
    • US5434934A
    • 1995-07-18
    • US250504
    • 1994-05-27
    • Masayuki TogawaKiyoshi ToyamaMinoru TakedaMorio Kobayashi
    • Masayuki TogawaKiyoshi ToyamaMinoru TakedaMorio Kobayashi
    • G01D5/36G01D5/34G01R33/032G02F1/09G02B6/10
    • G02F1/09G01D5/344
    • A method of magneto-optically modulating light comprises the steps of linearly polarizing the light on its transmission path, placing a magnetooptic effect element on the transmission path of the polarized light with the spontaneous magnetization direction of the element being parallel with the transmission path, the polarized light being modulated into a first light component when the plane of polarization of the polarized light is rotated to assume the first rotational position by the magnetooptic effect element in the absence of the applied magnetic field, applying the magnetic field to the magnetooptic effect element with the internal magnetization of the element being oriented in a direction perpendicular to the transmission path, the polarized light being modulated into a second light component when the plane of polarization of the polarized light is shifted to a second rotational position by the magnetooptic effect element in the presence of the applied magnetic field. According to the method, the light is modulated under the condition that the transmission path is perpendicular to the applied magnetic field, thereby making it possible to direct the transmission path in one of a variety of different directions respectively perpendicular to the direction of the applied magnetic field.
    • 磁光调制光的方法包括以下步骤:在其传输路径上线性偏振光,将磁光效应元件放置在偏振光的传输路径上,其中元件的自发磁化方向与传输路径平行, 当不存在所施加的磁场的情况下,当偏振光的偏振平面旋转以由磁光效应元件旋转以呈现第一旋转位置时,偏振光被调制成第一光分量,将磁场施加到磁光效应元件, 元件的内部磁化在垂直于传输路径的方向上定向,当偏振光的偏振光偏移到第二旋转位置时,偏振光被第二光分量调制成第二光分量 存在所施加的磁场。 根据该方法,在传输路径垂直于所施加的磁场的条件下对光进行调制,从而可以将传输路径引导到分别垂直于施加磁场的方向的各种不同方向中的一个方向 领域。
    • 10. 发明授权
    • Optical path switching apparatus
    • 光路切换装置
    • US06873448B2
    • 2005-03-29
    • US10376340
    • 2003-03-03
    • Masayuki TogawaMorio Kobayashi
    • Masayuki TogawaMorio Kobayashi
    • G02B26/08G02B6/32G02B6/35G02B7/00G02B6/26
    • G02B6/352G02B6/32G02B6/3546G02B6/3568G02B6/3572G02B6/3582
    • Each of light beam switching elements disposed between input and output fiber collimators includes a support member, a first reflection member mounted on the peripheral portion of the support member and a second reflection member mounted on the peripheral portion of the support member. The first reflection member has a first reflection mirror surface to reflect the light beam from the input fiber collimator, and the second reflection member has a second reflection mirror surface to reflect the light beam reflected by the first reflection mirror surface. A drive actuator allows each of the switching elements to assume a first rotation position in which the light beam from the input fiber collimator is reflected by the first and second mirror surfaces, and a second rotation position in which the light beam from the input fiber collimator passes between the first and second reflection members without being reflected by the mirror surfaces.
    • 设置在输入和输出光纤准直仪之间的每个光束切换元件包括支撑部件,安装在支撑部件的周边部分上的第一反射部件和安装在支撑部件周边部分上的第二反射部件。 第一反射构件具有反射来自输入光纤准直器的光束的第一反射镜面,第二反射构件具有反射由第一反射镜面反射的光束的第二反射镜面。 驱动致动器允许每个开关元件呈现第一旋转位置,在第一旋转位置,来自输入光纤准直仪的光束被第一和第二镜面反射,第二旋转位置,来自输入光纤准直仪的光束 在第一和第二反射构件之间通过,而不被镜面反射。