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    Beam receiving position adjusting device
    3.
    发明授权
    Beam receiving position adjusting device 失效
    梁接收位置调节装置

    公开(公告)号：US5559639A

    公开(公告)日：1996-09-24

    申请号：US47460

    申请日：1993-04-19

    申请人： Toshio Nakagishi ,  Hitoshi Kimura ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    发明人： Toshio Nakagishi ,  Hitoshi Kimura ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    IPC分类号： G02B26/08 ,  G02B27/28 ,  G11B7/09 ,  G11B7/135 ,  G11B7/22 ,  G02B7/02 ,  G11B7/00

    CPC分类号： G11B7/1356 ,  G02B26/0883 ,  G02B27/283 ,  G11B7/22 ,  G11B7/0903 ,  G11B7/0912

    摘要： A device including a polarizing beam splitter by which an incident luminous flux is split into a first luminous flux radiated onto a first photo sensor and a second luminous flux radiated onto a second photo sensor, and an adjusting mechanism provided for adjusting a position of one of the first and second luminous fluxes. The optical axis of the first luminous flux is coincident with that of the incident luminous flux. The optical axis of the second luminous flux is not parallel to the first luminous flux. By moving the beam splitter along the optical axis of the first luminous flux, the beam receiving position of the second photo sensor, onto which the second luminous flux is radiated, is changed.

    摘要翻译： 一种包括偏振分束器的装置，其中入射光束被分成辐射到第一光传感器上的第一光束和辐射到第二光传感器上的第二光束，以及调节机构，用于调节 第一和第二光束。 第一光束的光轴与入射光通量的光轴一致。 第二光束的光轴不平行于第一光束。 通过沿着第一光束的光轴移动分束器，改变第二光通量被辐射的第二光传感器的光束接收位置。

    Optical system for optical disc apparatus including anamorphic prisms
    4.
    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。

    Beam protecting device
    6.
    发明授权
    Beam protecting device 失效
    梁保护装置

    公开(公告)号：US5991102A

    公开(公告)日：1999-11-23

    申请号：US562827

    申请日：1995-11-27

    申请人： Masahiro Oono ,  Masato Hara ,  Tunehiko Sonoda ,  Koichi Maruyama

    发明人： Masahiro Oono ,  Masato Hara ,  Tunehiko Sonoda ,  Koichi Maruyama

    IPC分类号： G01C15/00 ,  G02B26/06 ,  G02B27/09 ,  G02B7/02

    CPC分类号： G02B27/09 ,  G01C15/004 ,  G02B19/0028 ,  G02B19/0052 ,  G02B19/0085 ,  G02B26/06 ,  G02B27/0972

    摘要： A beam projecting apparatus which includes a light source emitting a laser beam; and a beam projecting device which includes a beam projecting portion from which the laser beam is projected outwardly so that the laser beam has a beam waist position at a predetermined position apart from the beam projecting apparatus. The beam projecting apparatus further includes a beam waist position adjusting optical system which is disposed along a light path from the light source to the beam projecting portion, at least one lens element of the beam waist position adjusting optical system being movable along an optical axis thereof; a temperature detecting device for detecting a temperature in the beam projecting apparatus; and a controller for controlling a movement of the at least one lens element in association with the temperature detected by the temperature detecting device so that a deviation of the beam waist position from the predetermined position due to a temperature change is minimized.

    摘要翻译： 一种投影装置，包括发射激光束的光源; 以及射束投影装置，其包括光束突出部分，激光束从该突出部分向外突出，使得激光束具有远离光束投射装置的预定位置处的光束腰部位置。 光束投射装置还包括：光束腰位置调整光学系统，其沿着从光源到光束突出部分的光路设置，所述光束腰部位置调整光学系统的至少一个透镜元件可沿其光轴移动 ; 温度检测装置，用于检测光束投射装置中的温度; 以及控制器，用于与由温度检测装置检测的温度相关联地控制至少一个透镜元件的运动，使得光束腰部位置与由于温度变化引起的预定位置的偏差最小化。

    Beam receiving position adjusting device
    7.
    发明授权
    Beam receiving position adjusting device 失效
    梁接收位置调节装置

    公开(公告)号：US5768036A

    公开(公告)日：1998-06-16

    申请号：US684235

    申请日：1996-07-19

    申请人： Toshio Nakagishi ,  Hitoshi Kimura ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    发明人： Toshio Nakagishi ,  Hitoshi Kimura ,  Masahiro Oono ,  Koichi Maruyama ,  Masato Noguchi

    IPC分类号： G02B26/08 ,  G02B27/28 ,  G11B7/09 ,  G11B7/135 ,  G11B7/22 ,  G02B7/02 ,  G02B5/04

    CPC分类号： G11B7/1356 ,  G02B26/0883 ,  G02B27/283 ,  G11B7/22 ,  G11B7/0903 ,  G11B7/0912

    摘要： A device including a polarizing beam splitter by which an incident luminous flux is split into a first luminous flux radiated onto a first photo sensor and a second luminous flux radiated onto a second photo sensor, and an adjusting mechanism provided for rotatably adjusting a position of one of the first and second luminous fluxes. The optical axis of the first luminous flux is coincident with that of the incident luminous flux. The optical axis of the second luminous flux is not parallel to the first luminous flux. By rotating the beam splitter about the optical axis of the first luminous flux, the beam receiving position of the second photo sensor, onto which the second luminous flux is radiated, is changed.

    摘要翻译： 一种包括偏振分束器的装置，其中入射光束被分成辐射到第一光传感器上的第一光束和辐射到第二光传感器上的第二光束，以及调节机构，用于可旋转地调节一个位置 的第一和第二光束。 第一光束的光轴与入射光通量的光轴一致。 第二光束的光轴不平行于第一光束。 通过围绕第一光束的光轴旋转分束器，改变第二光通量辐射的第二光传感器的光束接收位置。

    Device for and method of reducing cross talk in optical disk device
    8.
    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。