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9 条记录 (耗时 0.039 秒)

    Photodetector for use with an optical recording medium
    4.
    发明授权
    Photodetector for use with an optical recording medium 失效
    用于光记录介质的光电检测器

    公开(公告)号：US4837429A

    公开(公告)日：1989-06-06

    申请号：US95237

    申请日：1987-09-11

    申请人： Isao Umezawa ,  Haruo Sone ,  Tadahiro Kusuda

    发明人： Isao Umezawa ,  Haruo Sone ,  Tadahiro Kusuda

    IPC分类号： H01L31/10 ,  G11B7/13 ,  H01L27/144 ,  H01L31/02 ,  H01L31/0216

    CPC分类号： G11B7/13 ,  H01L27/1443 ,  H01L31/02024 ,  H01L31/02161

    摘要： A photodetector includes a center photosensitive section having a surface for receipt of light reflected from an optical recording medium in producing information recorded on the optical recording medium. The center photosensitive section includes a plurality of photosensitive elements separated by a space from one another. A non-reflective transparent film is provided on substantially the whole area of the surface of the center photosensitive section to cover the photosensitive elements and the space.

    摘要翻译： 光电检测器包括中心感光部分，其具有在产生记录在光学记录介质上的信息时具有用于接收从光学记录介质反射的光的表面。 中心感光部分包括由空间彼此分开的多个感光元件。 在中心感光部分的表面的大致整个区域上设置无反射透明膜以覆盖感光元件和空间。

    Semiconductor laser chip
    6.
    发明授权
    Semiconductor laser chip 失效
    半导体激光芯片

    公开(公告)号：US4847846A

    公开(公告)日：1989-07-11

    申请号：US182200

    申请日：1988-03-07

    申请人： Haruo Sone ,  Isao Umezawa ,  Osamu Yoneyama

    发明人： Haruo Sone ,  Isao Umezawa ,  Osamu Yoneyama

    IPC分类号： H01S5/00 ,  G11B7/12 ,  G11B7/125 ,  H01S5/026

    CPC分类号： G11B7/123 ,  G11B7/127 ,  H01S5/0264

    摘要： A semiconductor laser comprising a laser diode which is mounted on a semiconductor chip which has a monitoring photodiode formed therein so as to monitor the laser light output of the laser diode. The cathode of the laser diode and the anode of the monitoring photodiode are connected together, and a suitable forward voltage for the laser diode and reverse voltage for the monitor photodiode is provided by a single power supply which results in a simple construction of an output detection circuit for the monitor photodiode which produces an increased output over prior art devices.

    Photo sensor device and optical pickup device
    9.
    发明授权
    Photo sensor device and optical pickup device 失效
    光传感器装置和光学拾取装置

    公开(公告)号：US4669071A

    公开(公告)日：1987-05-26

    申请号：US747559

    申请日：1985-06-21

    申请人： Toshihiko Minami ,  Isao Umezawa ,  Kenji Shintani

    发明人： Toshihiko Minami ,  Isao Umezawa ,  Kenji Shintani

    IPC分类号： H01L23/50 ,  G02B6/42 ,  G11B7/08 ,  G11B7/09 ,  G11B7/12 ,  G11B7/13 ,  H01L23/48 ,  H01L27/14 ,  H01L27/144 ,  H01L31/02 ,  G11B7/00

    CPC分类号： H01L27/1443 ,  G11B7/0903 ,  G11B7/12 ,  G11B7/13 ,  G11B7/0916 ,  H01L2224/49171

    摘要： A photosensor device and an optical pickup device incorporating the photosensor device are advantageously used in an optical compact disc player of the type where the optical pickup device is driven along a path at an acute tilt angle relative to the sides of a rectangular casing. The photosensor has a plurality of photosensitive elements aligned in a first direction and a plurality of terminal leads extending parallel to each other and perpendicular to a second direction so that the photosensor may be mounted on a circuit board in a conventional configuration to save space. Within the optical pickup device, the photosensitive elements are aligned at a mounting angle which is a function of the tilt angle so that the three optical beams are received thereon in the proper orientation.

    摘要翻译： 光传感器装置和结合有光传感器装置的光拾取装置有利地用于光学拾取装置相对于矩形壳体的侧面以锐角倾斜的方式被驱动的光学式光盘播放器。 光传感器具有沿第一方向排列的多个感光元件和彼此平行延伸并垂直于第二方向的多个端子引线，使得光传感器可以以常规配置安装在电路板上以节省空间。 在光学拾取装置内，感光元件以与倾斜角的关系的安装角度对准，使得三个光束以适当的方向被接收在其上。