公开(公告)号：US20110267934A1

公开(公告)日：2011-11-03

申请号：US13181574

申请日：2011-07-13

申请人： Toshiyasu TANAKA ,  Yoshiaki KOMMA ,  Kanji WAKABAYASHI ,  Fumitomo YAMASAKI ,  Osamu KAJINO

发明人： Toshiyasu TANAKA ,  Yoshiaki KOMMA ,  Kanji WAKABAYASHI ,  Fumitomo YAMASAKI ,  Osamu KAJINO

IPC分类号： G11B7/135 ,  G11B17/028

CPC分类号： G11B7/0933 ,  G11B7/22

摘要： To provide an optical pickup and an optical information device, capable of obtaining excellent signal characteristics for an optical disk on and/or from which recording and/or reproducing are performed using a laser. The optical pickup includes an optical detector, a support holder for holding the optical detector, and an optical base for fixing the support holder. The support holder has at least two notches at its both ends, the optical base has convex portions corresponding to the notches of the support holder, the optical base and the support holder are fixed by photo-curable adhesives for bonding the convex portions and the support holder to each other, and the shortest distance between the side faces of the convex portions, which do not face each other, is equal to or less than the width of the support holder in the direction of right and left ends.

摘要翻译： 为了提供一种光学拾取器和光学信息装置，能够使用激光器在其上和/或从其执行记录和/或再现的光盘获得优异的信号特性。 光学拾取器包括光学检测器，用于保持光学检测器的支撑保持器和用于固定支撑保持器的光学基座。 支撑架在其两端具有至少两个凹口，光学基座具有对应于支撑架的凹口的凸起部分，光学基座和支撑架由光固化粘合剂固定，用于将凸部和支撑件 彼此不相对的凸部的侧面之间的最短距离等于或小于支撑架在左右两端的方向上的宽度。

公开(公告)号：US20080186836A1

公开(公告)日：2008-08-07

申请号：US11966079

申请日：2007-12-28

申请人： Toshiyasu TANAKA ,  Fumitomo YAMASAKI ,  Kanji WAKABAYASHI ,  Yoshiaki KOMMA

发明人： Toshiyasu TANAKA ,  Fumitomo YAMASAKI ,  Kanji WAKABAYASHI ,  Yoshiaki KOMMA

IPC分类号： G11B7/00

CPC分类号： G11B7/1356 ,  G11B7/126 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13922 ,  G11B7/13925 ,  G11B7/1395 ,  G11B2007/0006

摘要： The present invention provides an optical structure of an optical pickup for adjusting the exit light quantity of a light source so as not to have adverse effect on reliability of semiconductor laser to be suited to the quantity of light, in consideration of difference in reflectivity of optical discs used in recording or reproducing. With this configuration, when composing a compatible optical pickup for recording or reproducing BD and HD DVD by using light diffraction means of diffraction type, the reliability of semiconductor laser used as light source may be enhanced with its diffraction efficiency.

摘要翻译： 本发明提供了一种用于调整光源的出射光量的光学拾取器的光学结构，以便不考虑光学的反射率的差异而对半导体激光器的可靠性不利于适合于光量的光学结构 用于记录或再现的光盘。 利用这种配置，当通过使用衍射型的光衍射装置来组合用于记录或再现BD和HD DVD的兼容光学拾取器时，可以以衍射效率提高用作光源的半导体激光器的可靠性。

公开(公告)号：US20080175110A1

公开(公告)日：2008-07-24

申请号：US12015688

申请日：2008-01-17

申请人： Fumitomo YAMASAKI ,  Yoshiaki KOMMA ,  Kanji WAKABAYASHI ,  Toshiyasu TANAKA

发明人： Fumitomo YAMASAKI ,  Yoshiaki KOMMA ,  Kanji WAKABAYASHI ,  Toshiyasu TANAKA

IPC分类号： G11B7/12 ,  G11B7/00 ,  G11B7/135 ,  G11B7/24

CPC分类号： G11B7/1353 ,  G11B7/131 ,  G11B7/1381 ,  G11B2007/0006 ,  G11B2007/0013

摘要： When performing a read or write operation on an optical disc with information storage layers, this compatible optical head with a two-focus lens can reduce interference caused by an unnecessary diffracted light reflected from a non-target layer and not contributing to reading or writing. The head reads and/or writes information from/on storage media, including first and second media with different protective substrate thicknesses, by irradiating a given one with a laser beam and includes: a diffraction element that diffracts the beam to produce diffracted light of multiple orders; an objective lens for converging nth and mth order ones of the light on the respective storage layers of the first and second media; a photodetector that receives the beam reflected from the medium and condensed; and a light shielding portion for preventing a portion of the beam reflected from the storage layer of the second medium and including its optical axis from reaching the photodetector. The light shielding portion is arranged so as to reduce loss to be caused by cutting off the portion of the beam to a predetermined value or less.

摘要翻译： 当在具有信息存储层的光盘上执行读取或写入操作时，具有双焦点透镜的兼容光学头可以减少由非目标层反射的不需要的衍射光引起的干扰，并且不会对读取或写入有贡献。 头通过用激光束照射给定的一个来读取和/或从存储介质（包括具有不同保护衬底厚度的第一介质和第二介质）读取和/或写入信息，并且包括：衍射元件，衍射光束以产生多个衍射光 命令; 用于将第一和第二介质的各个存储层上的第n个和第n个第一个光的会聚的物镜; 光接收器，其接收从介质反射并聚焦的光束; 以及用于防止从第二介质的存储层反射并包括其光轴的光束的一部分到达光电检测器的遮光部分。 遮光部被配置为减少将光束的一部分切断而造成的损失为规定值以下。

公开(公告)号：US20080151711A1

公开(公告)日：2008-06-26

申请号：US11960973

申请日：2007-12-20

申请人： Kanji WAKABAYASHI ,  Yoshiaki Komma ,  Fumitomo Yamasaki ,  Toshiyasu Tanaka

发明人： Kanji WAKABAYASHI ,  Yoshiaki Komma ,  Fumitomo Yamasaki ,  Toshiyasu Tanaka

IPC分类号： G11B5/09

CPC分类号： G11B7/08511 ,  G11B7/0956 ,  G11B2007/0006

摘要： In the present invention, at the time of pulling a focus on an information recording surface of a disc, a focus servo is first pulled in a substrate surface of the disc, and with the servo in a settled state, a driving signal necessary for following surface wobble is stored, and a focus is pulled in the information recording surface of the disc based upon a signal superimposed with the driving signal and a focus search driving signal.

摘要翻译： 在本发明中，在对光盘的信息记录面进行聚焦的时刻，首先在光盘的基板表面中拉动聚焦伺服，并且在伺服处于稳定状态时，将跟随所需的驱动信号 存储表面摆动，并且基于与驱动信号叠加的信号和焦点搜索驱动信号，将焦点拉到盘的信息记录表面中。

公开(公告)号：US20090284856A1

公开(公告)日：2009-11-19

申请号：US12464406

申请日：2009-05-12

申请人： Masahiro INATA ,  Kanji WAKABAYASHI ,  Hironori TOMITA

发明人： Masahiro INATA ,  Kanji WAKABAYASHI ,  Hironori TOMITA

IPC分类号： G02B7/04

CPC分类号： G02B7/02 ,  G02B27/0025

摘要： A guide shaft and a guide portion movably guide a lens holder for holding a collimator lens (i.e. correction lens) in an optical axis direction. A stepping motor rotates a screw shaft arranged in parallel to the optical axis direction. A nut member converts a rotating movement of the screw shaft into a rectilinear movement of the optical axis direction. An urging spring urges the lens holder against the guide shaft and the guide portion. The lens holder is driven in the optical axis direction along the guide shaft by the stepping motor, with a first contact portion and a second contact portion of the lens holder being contacted with the guide shaft, and a third contact portion of the lens holder being contacted with the guide portion by an urging force of the urging spring. The optical pickup device having the above arrangement allows for stable driving of a correction lens.

摘要翻译： 引导轴和引导部分可移动地引导用于保持准直透镜（即，校正透镜）在光轴方向上的透镜保持器。 步进电机旋转平行于光轴方向布置的螺杆轴。 螺母构件将螺杆轴的旋转运动转换为光轴方向的直线运动。 推动弹簧将透镜保持器推靠在引导轴和引导部分上。 透镜架通过步进电机沿导向轴沿光轴方向驱动，透镜架的第一接触部分和第二接触部分与导向轴接触，透镜架的第三接触部分为 通过推压弹簧的作用力与引导部分接触。 具有上述结构的光学拾取装置允许校正透镜的稳定驱动。

公开(公告)号：US20080084811A1

公开(公告)日：2008-04-10

申请号：US11866441

申请日：2007-10-03

申请人： Osamu KAJINO ,  Hironori TOMITA ,  Kanji WAKABAYASHI ,  Koji IEKI

发明人： Osamu KAJINO ,  Hironori TOMITA ,  Kanji WAKABAYASHI ,  Koji IEKI

IPC分类号： G11B7/00

CPC分类号： G11B7/0935 ,  G11B7/0932 ,  G11B7/0933 ,  G11B7/1275 ,  G11B2007/0006

摘要： The objective lens driving device of the present invention for an optical pickup device is provided. The device includes first and second objective lenses, and a lens holder for supporting the first and second objective lenses. The lens holder has a first through-hole for passage of first laser beam and a second through-hole for passage of second laser beam. Where a plane defined by a central axis of the first objective lens and a central axis of the second objective lens is a central plane, a plane perpendicular to the central plane and including the central axis of the first objective lens is a first plane, and a plane perpendicular to the central plane and including the central axis of the second objective lens is a second plane; the first through-hole is asymmetrical with respect to the first plane and/or the second through-hole is asymmetrical with respect to the second plane.

摘要翻译： 提供了本发明的用于光学拾取装置的物镜驱动装置。 该装置包括第一和第二物镜，以及用于支撑第一和第二物镜的透镜支架。 透镜架具有用于第一激光束通过的第一通孔和用于第二激光束通过的第二通孔。 在由第一物镜的中心轴和第二物镜的中心轴限定的平面是中心平面的情况下，垂直于中心平面并且包括第一物镜的中心轴的平面是第一平面，并且 垂直于中心平面并且包括第二物镜的中心轴的平面是第二平面; 第一通孔相对于第一平面不对称和/或第二通孔相对于第二平面不对称。