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3 条记录 (耗时 0.021 秒)

    OPTICAL PICKUP DEVICE
    1.
    发明申请
    OPTICAL PICKUP DEVICE 审中-公开
    光学拾取器件

    公开(公告)号：US20110188367A1

    公开(公告)日：2011-08-04

    申请号：US13015984

    申请日：2011-01-28

    申请人： Soo Han PARK ,  Bong Gi KIM ,  Ichiro MORISHITA

    发明人： Soo Han PARK ,  Bong Gi KIM ,  Ichiro MORISHITA

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1353 ,  G11B7/1275 ,  G11B7/1376 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： An optical pickup includes a collimator lens having a diverging lens and a converging lens, such that it maintains a constant focal length and has a short optical path length. The collimator lens of the optical pickup device includes a diverging lens located at the side of a light source and a converging lens located at the side of generating parallel light or gentle oscillation light. In addition, the diverging lens and the converging lens of the collimator lens may be integrated, or may also be formed of a hologram optical element. As a result, the optical pickup device can be configured in the form of a slim structure using the collimator lens having a short optical path length.

    摘要翻译： 光拾取器包括具有发散透镜和会聚透镜的准直透镜，使得其保持恒定的焦距并且具有短的光程长度。 光拾取装置的准直透镜包括位于光源侧的发散透镜和位于产生平行光或平缓振荡光的一侧的会聚透镜。 此外，准直透镜的发散透镜和会聚透镜可以一体化，或者也可以由全息光学元件形成。 结果，光拾取装置可以使用具有短的光路长度的准直透镜来构造成细长结构的形式。

    OPTICAL PICK-UP AND DISC APPARATUS HAVING THE SAME
    2.
    发明申请
    OPTICAL PICK-UP AND DISC APPARATUS HAVING THE SAME 有权
    光学拾取器和具有相同功能的光盘设备

    公开(公告)号：US20080198708A1

    公开(公告)日：2008-08-21

    申请号：US11950775

    申请日：2007-12-05

    申请人： Bong Gi KIM

    发明人： Bong Gi KIM

    IPC分类号： G11B5/027 ,  G11B7/00

    CPC分类号： G11B7/1369 ,  G11B7/0903 ,  G11B2007/0013

    摘要： An optical pick-up and a disc apparatus having the same. The inferiority of a tracking signal caused by an adjacent layer during the recording and/or reproducing of an optical disc with multiple recording layers is effectively prevented. The optical pickup includes a light source to emit light with a predetermined wavelength, a light collecting unit to collect the light emitted from the light source to form a light spot on a signal recording layer of an optical disc having a plurality of recording layers, a photodetector to receive the light reflected by the optical disc to detect a signal, and an optical member to change the optical transmission of the light reflected by the optical disc according to an incident angle of the reflected light to decrease an optical transmission of a noise light entering the photodetector.

    摘要翻译： 光学拾取器和具有该拾取器的盘装置。 有效地防止了在具有多个记录层的光盘的记录和/或再现期间由相邻层引起的跟踪信号的劣势。 光学拾取器包括用于发射具有预定波长的光的光源;聚光单元，用于收集从光源发射的光以在具有多个记录层的光盘的信号记录层上形成光斑; 光接收器，用于接收由光盘反射的光以检测信号;以及光学部件，根据反射光的入射角度改变由光盘反射的光的光透射，以减少噪声光的透射 进入光电检测器。