公开(公告)号：US08000209B2

公开(公告)日：2011-08-16

申请号：US12280812

申请日：2007-02-27

申请人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Kanji Wakabayashi

发明人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Kanji Wakabayashi

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G11B7/1392

摘要： An optical pickup includes: a laser light source which outputs an divergent beam having an elliptical far-field pattern; a beam shaping element having at least one cylindrical plane and which shapes the divergent beam outputted from the laser light source into an divergent beam having a prescribed shape in which at least the length in the major axis direction of the elliptical shape is shortened; a light collecting portion having a beam splitter which perpendicularly collects the divergent beam that is outputted from the beam shaping element and which has a prescribed shape on the recording surface of an optical disk , and a mirror or the like; and a light detecting portion The optical axis of the divergent beam is rotated so that the direction in which the major axis of the divergent beam having a prescribed shape is shortened conforms to the radial direction of an optical information recording medium.

摘要翻译： 光学拾取器包括：激光源，其输出具有椭圆形远场图案的发散光束; 具有至少一个圆柱面并且将从激光光源输出的发散光束成形为具有规定形状的发散光束的光束成形元件，其中至少椭圆形长轴方向上的长度被缩短; 具有分束器的光收集部分，其垂直地收集从光束成形元件输出并且在光盘的记录表面上具有规定形状的发散光束和反射镜等; 和光检测部分发散光束的光轴旋转，使得具有规定形状的发散光束的长轴的方向被缩短，符合光学信息记录介质的径向。

公开(公告)号：US07898923B2

公开(公告)日：2011-03-01

申请号：US12280588

申请日：2007-02-27

申请人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Kanji Wakabayashi

发明人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Kanji Wakabayashi

IPC分类号： G11B7/00

CPC分类号： G11B7/12

摘要： An optical pickup device which can improve heat radiation efficiency and an optical disk apparatus including the optical pickup device are provided. The optical pickup device having a base (110), a laser unit (141), an optical system (140) which propagates a laser beam, and an adjusting member (142) includes a heat radiation part (146) which is fixed to a heat radiation surface (141b) of the laser unit and which conducts heat from the heat radiation surface to the adjusting member. Therefore, heat generated by the laser unit is transmitted to the adjusting member and then the base through the heat radiation part to make it possible to efficiently perform heat removal for the laser unit.

摘要翻译： 提供一种能够提高散热效率的光拾取装置和包括该光拾取装置的光盘装置。 具有基座（110），激光单元（141），传播激光束的光学系统（140）和调节构件（142）的光学拾取装置包括：热辐射部分（146），其固定到 激光单元的散热表面（141b），并且将热量从热辐射表面传导到调节构件。 因此，由激光单元产生的热量通过散热部分传递到调节部件，然后传递到基部，以便有效地执行激光单元的散热。

公开(公告)号：US07859980B2

公开(公告)日：2010-12-28

申请号：US12280037

申请日：2007-02-15

申请人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

发明人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

IPC分类号： G11B7/135

CPC分类号： G11B7/1381 ,  G11B7/126 ,  G11B7/1369

摘要： In an optical beam transmissive adjusting mechanism (110) included in an optical pickup device, arrangement positions of a first transmissive element (111) having a first transmittance and a second transmissive element (112) having a second transmittance higher than the first transmittance are switched by a rotational drive unit (105), and an optical beam having a first optical power and an optical beam having a second optical power are output selectively. Furthermore, since a transmissive element of a non-transmissive side for an optical beam is arranged at an angle inclined to an optical axis of the optical beam, the transmissive element does not obstruct a path of the optical beam to be diffused.

摘要翻译： 在包括在光学拾取装置中的光束透射调节机构（110）中，切换具有第一透射率的第一透射元件（111）和具有比第一透射率高的第二透射率的第二透射元件（112）的布置位置 通过旋转驱动单元（105），并且选择性地输出具有第一光功率的光束和具有第二光功率的光束。 此外，由于用于光束的非透射侧的透射元件以与光束的光轴倾斜的角度布置，所以透射元件不会妨碍光束的漫射路径。

公开(公告)号：US07773304B2

公开(公告)日：2010-08-10

申请号：US12280601

申请日：2007-01-23

申请人： Keiichi Matsuzaki ,  Yoshiaki Komma ,  Toshiyasu Tanaka ,  Kousei Sano ,  Kanji Wakabayashi ,  Hidenori Wada

发明人： Keiichi Matsuzaki ,  Yoshiaki Komma ,  Toshiyasu Tanaka ,  Kousei Sano ,  Kanji Wakabayashi ,  Hidenori Wada

IPC分类号： G02B17/00

CPC分类号： G11B7/1353 ,  G11B7/1362 ,  G11B7/1376 ,  G11B7/13925 ,  G11B2007/0013

摘要： A small optical pickup of wide spherical aberration correction range includes a rising mirror for perpendicularly deflecting a light beam and guiding the light beam to an objective lens; a spherical aberration correction lens having one surface formed to a larger curvature than the other surface; a lens holder for holding the correction lens so that the surface of large curvature projects towards the rising mirror side; an axially extending guide member; and a slidable part slidable along the guide member. The projecting portion of the slidable part is configured to be fitted within the side surface of the reflecting surface of the rising mirror, and the projecting portion from the lens holder of the spherical aberration correction lens overlaps the reflecting surface of the rising mirror when the spherical aberration correction lens approaches the rising mirror the most.

摘要翻译： 宽球面像差校正范围的小型光学拾取器包括用于垂直偏转光束并将光束引导到物镜的上升反射镜; 球面像差校正透镜，其一个表面形成为比另一个表面大的曲率; 用于保持校正透镜的透镜保持器，使得大曲率的表面朝向上升反射镜侧突出; 轴向延伸的引导构件; 以及可沿导向件滑动的滑动部件。 可滑动部分的突出部分被配置成装配在上升反射镜的反射表面的侧表面中，并且当球面像差校正透镜的透镜保持器的突出部分与反射镜的反射表面重叠时，当球形 像差校正镜最接近上升镜。

公开(公告)号：US07738343B2

公开(公告)日：2010-06-15

申请号：US11386381

申请日：2006-03-22

申请人： Yoshiaki Komma ,  Hidenori Wada ,  Seiji Nishino

发明人： Yoshiaki Komma ,  Hidenori Wada ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/08511 ,  G11B7/1378 ,  G11B7/13925 ,  G11B7/13927 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical disk device is provided with an optical pickup that includes a convergent optical system having an objective lens for converging a light beam emitted from the laser light source to form a microspot on an optical disk and an aberration correcting optical system for controlling a spherical aberration of the convergent optical system, and performs information recording or reproduction with respect to a multi-layer optical disk having at least a first recording layer and a second recording layer. In the optical disk device, an operation of changing a correction quantity of the spherical aberration from a value adequate for the first recording layer to a predetermined value is started before an operation of moving a focus position of the microspot from the first layer to the second layer is completed. This allows a focus control to be performed stably with respect to the second recording layer in a state in which the spherical aberration correction already has been carried out, thereby preventing the focus control from failing due to an unsuccessful interlayer jump.

摘要翻译： 光盘装置具有光学拾取器，该光学拾取器包括会聚光学系统，该会聚光学系统具有用于会聚从激光光源发射的光束以在光盘上形成微点的物镜，以及用于控制球面像差的像差校正光学系统 并且对具有至少第一记录层和第二记录层的多层光盘执行信息记录或再现。 在光盘装置中，将微球的聚焦位置从第一层移动到第二层的操作之前开始将球面像差的校正量从适合于第一记录层的值改变到预定值的操作 层完成。 这允许在已经执行球面像差校正的状态下相对于第二记录层稳定地执行聚焦控制，从而防止聚焦控制由于不成功的层间跳跃而失败。

公开(公告)号：US07693026B2

公开(公告)日：2010-04-06

申请号：US12271161

申请日：2008-11-14

申请人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

发明人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

IPC分类号： G11B7/00

CPC分类号： G11B7/1275 ,  G02B5/32 ,  G11B7/1353 ,  G11B2007/0006

摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.

摘要翻译： 本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22） 从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其传播第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达：380nm和nlE;（n-1） ）×d＆nlE; 420nm，其中n是衬底在400nm波长处的折射率，d（nm）是每个步长的槽的深度，并且其中沟槽形成为深度的两个步骤 d和深度2d。

公开(公告)号：US20080031120A1

公开(公告)日：2008-02-07

申请号：US11643770

申请日：2006-12-22

申请人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

发明人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

IPC分类号： G11B7/135

CPC分类号： G11B7/121 ,  G11B2007/0006

摘要： An objective lens actuator is provided which includes two objective lenses mounted on a movable body, and which is capable of preventing the movable body from coming into contact or collision with a disk and whose thickness becomes thinner. When a light beam is concentrated and focused on a high-density optical disk, D1 represents the distance between the disk surface and the part of the movable body in the closest position to the disk; when a light beam is concentrated and focused on a CD, D2 represents the distance between the disk surface and the part of the movable body in the closest position to the disk; when a light beam is concentrated and focused on a DVD, D3 represents the distance between the disk surface and the part of the movable body in the closest position to the disk; and the following relational expression (1) is satisfied, D1

摘要翻译： 提供一种物镜致动器，其包括安装在可移动体上的两个物镜，并且能够防止可移动体与盘接触或碰撞并且其厚度变薄。 当光束集中并聚焦在高密度光盘上时，D 1表示盘表面与可移动体的最靠近盘片的部分之间的距离; 当光束集中并聚焦在CD上时，D 2表示盘表面与可移动体在最靠近盘的位置的距离; 当光束集中并聚焦在DVD上时，D 3表示盘表面与可移动体在与盘最接近的位置的距离; 并且满足以下关系式（1），<？in-line-formula description =“In-line formula”end =“lead”？> D1

公开(公告)号：US07215476B2

公开(公告)日：2007-05-08

申请号：US10975308

申请日：2004-10-27

申请人： Yasuo Kitaoka ,  Ken'ichi Kasazumi ,  Katsuhiko Kumagawa ,  Kazuhisa Yamamoto ,  Hidenori Wada

发明人： Yasuo Kitaoka ,  Ken'ichi Kasazumi ,  Katsuhiko Kumagawa ,  Kazuhisa Yamamoto ,  Hidenori Wada

IPC分类号： G02B27/30 ,  G02B27/14 ,  G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/1275 ,  G11B7/1362 ,  G11B7/1367 ,  G11B7/1369 ,  G11B2007/0006

摘要： Laser beams respectively emitted from a SHG blue laser unit and a red semiconductor laser unit that have photo detectors respectively are turned into parallel lights by a collimator lens and then coupled by a dielectric multi-layer film mirror so as to be propagated on the same optical axis. The dielectric multi-layer film mirror is configured so as to transmit light with a wavelength of 500 nm or shorter and reflect light with a wavelength of 500 nm or longer for both P wave and S wave. The lights that are transmitted and reflected by the dielectric multi-layer film mirror pass through a polarizing hologram and a phase variable wave plate and are focused on an optical disk by an objective lens. In this manner, a simple configuration can realize a compatibility with many types of optical disks and a stable signal detection even when using a polarizing optical detection system.

摘要翻译： 分别从具有光电检测器的SHG蓝色激光单元和红色半导体激光单元分别发射的激光束通过准直透镜转换为平行光，然后通过电介质多层膜镜耦合，以便在相同的光学 轴。 介电多层膜反射镜被配置为透射波长为500nm或更短的光，并且对于P波和S波都反射波长为500nm或更长的光。 由电介质多层膜镜透射和反射的光通过偏振全息图和相位可变波片，并通过物镜聚焦在光盘上。 以这种方式，即使使用偏振光学检测系统，简单的配置也可以实现与许多类型的光盘的兼容性和稳定的信号检测。

公开(公告)号：US07161890B2

公开(公告)日：2007-01-09

申请号：US10504375

申请日：2003-02-07

申请人： Yoshiaki Komma ,  Hidenori Wada

发明人： Yoshiaki Komma ,  Hidenori Wada

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0948 ,  G11B7/1275 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13925 ,  G11B7/13927 ,  G11B2007/0006

摘要： Providing an objective lens with a large numerical aperture (NA), the present invention records or plays conventional optical disks such as CDs and DVDs at high light usage efficiency, using an optical head capable of recording or reproducing high-density optical disks. A diffraction optical element (8) is disposed in a light path of a first light beam of a first wavelength λ1 (400 nm to 415 nm) and a second light beam of a second wavelength λ2 (650 nm to 680 nm). And, the present invention principally emits 5th order diffracted light with respect to the first light beam, and principally emits 3rd order diffracted light with respect to the second light beam, from the diffraction optical element (8). Thus, a high diffraction efficiency of substantially 100% can be obtained with respect to both wavelengths.

摘要翻译： 提供具有大数值孔径（NA）的物镜，本发明使用能够记录或再现高密度光盘的光头记录或播放诸如CD和DVD的常规光盘，具有高的光使用效率。 衍射光学元件（8）设置在第一波长λ1（400nm至415nm）的第一光束和第二波长λ2（650nm至680nm）的第二光束的光路中。 并且，本发明主要从衍射光学元件（8）发射相对于第一光束的5级衍射光，并且主要相对于第二光束发射3阶衍射光。 因此，可以获得相对于两个波长的基本上100％的高衍射效率。

公开(公告)号：US20050152258A1

公开(公告)日：2005-07-14

申请号：US10504375

申请日：2003-02-07

申请人： Yoshiaki Komma ,  Hidenori Wada

发明人： Yoshiaki Komma ,  Hidenori Wada

IPC分类号： G11B7/00 ,  G11B7/125

CPC分类号： G11B7/1353 ,  G11B7/0948 ,  G11B7/1275 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13925 ,  G11B7/13927 ,  G11B2007/0006

摘要： Providing an objective lens with a large numerical aperture (NA), the present invention records or plays conventional optical disks such as CDs and DVDs at high light usage efficiency, using an optical head capable of recording or reproducing high-density optical disks. A diffraction optical element (8) is disposed in a light path of a first light beam of a first wavelength λ1 (400 nm to 415 nm) and a second light beam of a second wavelength λ2 (650 nm to 680 nm). And, the present invention principally emits 5th order diffracted light with respect to the first light beam, and principally emits 3rd order diffracted light with respect to the second light beam, from the diffraction optical element (8). Thus, a high diffraction efficiency of substantially 100% can be obtained with respect to both wavelengths.

摘要翻译： 提供具有大数值孔径（NA）的物镜，本发明使用能够记录或再现高密度光盘的光头记录或播放诸如CD和DVD的常规光盘，具有高的光使用效率。 衍射光学元件（8）设置在第一波长λ1（400nm至415nm）的第一光束和第二波长λ2（650nm至680nm）的第二光束的光路中。 并且，本发明主要从衍射光学元件（8）发射相对于第一光束的5级衍射光，并且主要相对于第二光束发射3阶衍射光。 因此，可以获得相对于两个波长的基本上100％的高衍射效率。