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58 条记录 (耗时 0.033 秒)

    Device for and method of reducing cross talk in optical disk device
    2.
    发明授权
    Device for and method of reducing cross talk in optical disk device 失效
    减少光盘装置串扰的装置和方法

    公开(公告)号：US5373437A

    公开(公告)日：1994-12-13

    申请号：US740726

    申请日：1991-08-06

    申请人： Tsuyoshi Itoh ,  Isao Okuda ,  Hiroshi Nishikawa ,  Toshiyuki Kase ,  Ryota Ogawa ,  Masahiro Oono ,  Koichi Maruyama ,  Makoto Iki

    发明人： Tsuyoshi Itoh ,  Isao Okuda ,  Hiroshi Nishikawa ,  Toshiyuki Kase ,  Ryota Ogawa ,  Masahiro Oono ,  Koichi Maruyama ,  Makoto Iki

    IPC分类号： G02B7/28 ,  G11B7/09 ,  G11B7/095 ,  G11B7/00

    CPC分类号： G11B7/0909

    摘要： A device in which an offset is added to a focusing error signal to control an objective lens and thereby reduce the generation of cross-talk when a beam spot that is converged on an optical disk crosses over a wall of a groove of a track of the disk. By adding the offset to the focusing error signal, the objective lens is moved out of focus with the disk. Thus, the shape of a beam spot formed on a photo sensor is changed from a circle to an ellipse. A condenser lens provided for forming the beam spot is moved along the optical axis thereof in such a manner that an output of a recorded signal of the disk is at a maximum value. As a result, the objective lens is brought into focus on the disk. Thereafter, the objective lens is focused on the disk in accordance with the focusing error signal to which the offset is added, while maintaining the beam spot in the shape of an ellipse.

    摘要翻译： 一种装置，其中偏移量被加到聚焦误差信号上以控制物镜，从而当会聚在光盘上的束斑横跨在光盘的轨道的凹槽的壁上时减少串扰的产生 磁盘。 通过将偏移量加到聚焦误差信号上，物镜与光盘移出对焦。 因此，形成在光传感器上的光斑的形状从圆形变为椭圆形。 设置用于形成束斑的聚光透镜沿其光轴移动，使得盘的记录信号的输出处于最大值。 结果，将物镜聚焦在盘上。 此后，根据添加有偏移量的聚焦误差信号将物镜聚焦在光盘上，同时将光束点保持为椭圆形状。

    Optical disc apparatus having five light receiving areas for detecting focus error and tracking error
    6.
    发明授权
    Optical disc apparatus having five light receiving areas for detecting focus error and tracking error 失效
    具有用于检测聚焦误差和跟踪误差的五个光接收区域的光盘装置

    公开(公告)号：US5278401A

    公开(公告)日：1994-01-11

    申请号：US928408

    申请日：1992-08-12

    申请人： Suguru Takishima ,  Isao Okuda ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    发明人： Suguru Takishima ,  Isao Okuda ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    IPC分类号： G11B7/09 ,  G11B7/13 ,  G11B11/105 ,  G01J1/20 ,  G11B7/00

    CPC分类号： G11B11/10597 ,  G11B11/10576 ,  G11B7/0903 ,  G11B7/0912 ,  G11B7/0943 ,  G11B7/131

    摘要： A signal detecting apparatus in an optical disc apparatus having an objective lens which converges light emitted from a light source onto an optical disc and a condenser lens which converges light reflected by the optical disc and transmitted through the objective lens includes first and second light receiving elements, each having a light receiving surface located before or behind a convergence point on which the light reflected from the optical disc is converged when the objective lens is in a focal position. Each of the light receiving surfaces are split into at least four light receiving areas. The signal detecting apparatus also includes a means for calculating a sum of differences of outputs of the light receiving surfaces' inner light receiving areas, calculating a sum of differences of outputs of the light receiving surfaces' outer light receiving areas, and then calculating a difference of the sums of differences, so that a track error signal is output in accordance with the difference of sums of differences calculated by the calculating means.

    摘要翻译： 在具有将从光源发射的光会聚到光盘上的物镜的光盘装置中的信号检测装置和会聚由光盘反射并透过物镜的光的聚光透镜包括第一和第二光接收元件 每个具有位于会聚点之前或之后的光接收表面，当物镜处于焦点位置时，从该光盘反射的光会聚在其上。 每个光接收表面被分成至少四个光接收区域。 信号检测装置还包括：计算受光面的内部光接收区域的输出的差的和的方式，计算受光面的外部光接收区域的输出的差的和，然后计算差 的差值之和，使得根据由计算装置计算的差值之差来输出轨道误差信号。

    Optical system for optical disc apparatus including anamorphic prisms
    7.
    发明授权
    Optical system for optical disc apparatus including anamorphic prisms 失效
    包括变形棱镜的光盘装置的光学系统

    公开(公告)号：US5477386A

    公开(公告)日：1995-12-19

    申请号：US917324

    申请日：1992-07-23

    申请人： Isao Okuda ,  Suguru Takishima ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    发明人： Isao Okuda ,  Suguru Takishima ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    IPC分类号： G02B5/04 ,  G11B7/135 ,  G02B7/18 ,  G02B13/10 ,  G02B27/10 ,  G11B7/12

    CPC分类号： G11B7/1359 ,  G02B5/04

    摘要： An optical system of an optical disc apparatus is disclosed for converging and projecting a bundle of rays emitted from a light source onto an optical disc. The optical system includes a collimating lens which collimates the bundle of rays emitted from the light source, two anamorphic prisms for shaping the cross section of the collimated bundle of rays transmitted through the collimating lens, and an objective lens which converges the bundle of rays shaped by the anamorphic prisms onto the optical disc. At least one of the anamorphic prisms is detachably mounted to an immovable body portion of the optical system.

    摘要翻译： 公开了一种光盘装置的光学系统，用于会聚和投射从光源发射的光束到光盘上。 光学系统包括准直透镜，其准直从光源发射的光束，两个变形棱镜，用于对通过准直透镜透射的准直光束的横截面进行成形;以及物镜，会聚成束状的光束 通过变形棱镜到光盘上。 至少一个变形棱镜可拆卸地安装到光学系统的不动部分。

    Lens Inclination Adjustment System
    8.
    发明授权
    Lens Inclination Adjustment System 失效
    镜头倾斜调整系统

    公开(公告)号：US5896362A

    公开(公告)日：1999-04-20

    申请号：US899701

    申请日：1997-07-24

    申请人： Isao Okuda ,  Toshiyuki Kase ,  Hiroshi Nishikawa

    发明人： Isao Okuda ,  Toshiyuki Kase ,  Hiroshi Nishikawa

    IPC分类号： G01B11/26 ,  G02B7/02 ,  G11B7/22 ,  G11B7/09

    CPC分类号： G01B11/26 ,  G02B7/023 ,  G11B7/22

    摘要： A lens adjustment system including a interferometer and an adjustment unit is used for adjusting an inclination of a lens of an optical data recording/reproducing device. The interferometer detects an inclination angle of the objective lens, then, the inclination of the lens is adjusted at the adjustment portion. There are two light sources: one is for the interferometer; and the other is for monitoring the inclination adjustment. The inclination adjustment unit has an optical element which prevents the beam projected toward the interferometer from being incident on an image receiving surface of the monitoring system, and only the beam for monitoring the inclination adjustment is observed when the inclination of the lens is being adjusted.

    摘要翻译： 使用包括干涉仪和调整单元的透镜调节系统来调整光学数据记录/再现装置的透镜的倾斜度。 干涉仪检测物镜的倾斜角度，然后调节透镜的倾斜度。 有两个光源：一个是干涉仪; 另一个用于监测倾斜度调整。 倾斜调节单元具有防止投影到干涉仪的光束入射到监视系统的图像接收表面上的光学元件，并且当调整透镜的倾斜度时，仅观察用于监视倾斜调节的光束。

    Inclination monitoring system
    9.
    发明授权
    Inclination monitoring system 失效
    倾斜监控系统

    公开(公告)号：US5894370A

    公开(公告)日：1999-04-13

    申请号：US899817

    申请日：1997-07-24

    申请人： Isao Okuda ,  Toshiyuki Kase ,  Hiroshi Nishikawa

    发明人： Isao Okuda ,  Toshiyuki Kase ,  Hiroshi Nishikawa

    IPC分类号： G01B11/26 ,  G02B27/64 ,  G11B7/22 ,  G02B7/02

    CPC分类号： G01B11/26 ,  G02B27/646 ,  G11B7/22

    摘要： An inclination status monitoring system which optically detects an inclination of a lens as it changes its inclination. A light beam having a diameter greater than the diameter of the lens to be inclined is incident on the lens. The lens has a planar reflective surface surrounding a lens portion thereof. The light beam is reflected on the reflective surface, and the reflected beam is converged by a converging lens and focused on an image receiving system, which enables a user to observe the image formed on an image receiving surface. The image of the reflected beam moves simultaneously as the lens inclination is changed.

    摘要翻译： 倾斜状态监视系统，其在检测透镜的倾斜度时改变其倾斜度。 具有大于要倾斜的透镜的直径的直径的光束入射到透镜上。 透镜具有围绕其透镜部分的平面反射表面。 光束在反射表面上被反射，并且反射光束被会聚透镜会聚并聚焦在图像接收系统上，这使得用户能够观察形成在图像接收表面上的图像。 当透镜倾斜度改变时，反射光束的图像同时移动。

    Inclination monitoring system including reflection of collimated light
    10.
    发明授权
    Inclination monitoring system including reflection of collimated light 失效
    倾斜监测系统包括准直光的反射

    公开(公告)号：US5883709A

    公开(公告)日：1999-03-16

    申请号：US916047

    申请日：1997-08-21

    申请人： Isao Okuda ,  Toshiyuki Kase ,  Hiroshi Nishikawa

    发明人： Isao Okuda ,  Toshiyuki Kase ,  Hiroshi Nishikawa

    IPC分类号： G01B11/26 ,  G11B7/095 ,  G01C1/00

    CPC分类号： G01B11/26 ,  G11B7/0956

    摘要： An inclination monitoring system for monitoring an inclination of a lens having a lens portion and a flange portion surrounding the lens portion with respect to a reference plane. The inclination monitoring system includes a light emitting system which emits a collimated light beam towards the lens. The light emitting system and the lens are arranged such that optical axes of the light emitting system and the lens form a first predetermined angle. The monitoring system is further provided with a light receiving system which receives light reflected by the lens. The light receiving system is arranged in a predetermined positional relationship with respect to the light emitting system and the lens. In particular, the collimated light beam illuminates an entire area of the flange portion.

    摘要翻译： 一种倾斜监视系统，用于监测具有透镜部分的透镜和围绕透镜部分的凸缘部分相对于参考平面的倾斜度。 倾斜监测系统包括朝向透镜发射准直光束的发光系统。 发光系统和透镜被布置成使得发光系统和透镜的光轴形成第一预定角度。 监视系统还设置有接收由透镜反射的光的光接收系统。 光接收系统相对于发光系统和透镜以预定的位置关系布置。 特别地，准直光束照射凸缘部分的整个区域。