知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

5 条记录 (耗时 0.012 秒)

    Method and apparatus for determining the polarization state of a light wave field
    3.
    发明授权
    Method and apparatus for determining the polarization state of a light wave field 失效
    用于确定光波场的偏振状态的方法和装置

    公开(公告)号：US4516855A

    公开(公告)日：1985-05-14

    申请号：US359406

    申请日：1982-03-18

    申请人： Hans E. Korth

    发明人： Hans E. Korth

    IPC分类号： G01J4/00 ,  G01N21/21 ,  G01J4/04

    CPC分类号： G01J4/00 ,  G01N21/211

    摘要： The local state of polarization of a light wave field is determined by measuring the radiation transmitted by one or several polarizers with three different azimuth angles. A modified TV camera is used having its usually provided tri-color filters replaced by polarization filters whose azimuth angles differ from each other by 60.degree. respectively. On a connected color monitor, the local polarization state can be concluded from the local brightness, the hue, and the saturation. The polarization camera can preferably be used for ellipsometric measurings, in an interferometric system for surface topography, and in interferometric holography. The display of the polarization state of the color monitor can be supplemented by electronic means, e.g. emphasizing points having the same state of polarization.

    摘要翻译： 通过测量具有三个不同方位角的一个或多个偏振器发射的辐射来确定光波场的局部偏振状态。 使用改进的电视摄像机，其通常提供的三色滤光器被方位角分别相差60°的偏振滤光器取代。 在连接的彩色监视器上，局部极化状态可以从局部亮度，色调和饱和度得出。 偏振照相机可以优选地用于椭圆测量，用于表面形貌的干涉系统和干涉全息术。 彩色监视器的偏振状态的显示可以通过电子装置来补充，例如， 强调具有相同的极化状态的点。

    Read/write head for optical disks
    5.
    发明授权
    Read/write head for optical disks 失效
    光盘读写头

    公开(公告)号：US4866694A

    公开(公告)日：1989-09-12

    申请号：US840670

    申请日：1986-12-11

    申请人： Hans E. Korth

    发明人： Hans E. Korth

    IPC分类号： G02B6/00 ,  G02B17/08 ,  G11B7/08 ,  G11B7/12 ,  G11B11/105 ,  G02B6/10

    CPC分类号： G11B7/08 ,  G11B11/10532 ,  G11B7/124

    摘要： In an optical storage system where an information bearing surface moves relative to a read/write head the latter includes a transparent body in which light beams sent to and from the surface are guided by multiple internal reflections. Beam shaping and focussing is effected by optical elements integrated in the surface of the body at the locations where the internal reflections occur. A distortion free imaging system is obtained with two series-arranged aspheric reflection surfaces which focus the beam on the information bearing surface. The separation of the input and the reflected beam paths is achieved with a polarizing beam splitter and an associated quarter-wave layer. For readout of a magneto-optic information bearing surface a nonperfect polarizing beam splitter is used in connection with a differential detection scheme to increase the signal to noise/ratio.

    摘要翻译： 在信息承载表面相对于读/写头移动的光学存储系统中，后者包括透射体，其中发射到表面的光束和多个内部反射被引导。 光束成形和聚焦由在内部反射发生的位置处集成在身体表面的光学元件实现。 获得具有两个串联布置的非球面反射表面的无失真成像系统，其将光束聚焦在信息承载表面上。 通过偏振分束器和相关的四分之一波长层来实现输入和反射光束路径的分离。 为了读出磁光信息承载表面，结合差分检测方案使用非完全偏振分束器来增加信噪比/比率。