公开(公告)号：US5577018A

公开(公告)日：1996-11-19

申请号：US122411

申请日：1993-09-21

申请人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

发明人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

IPC分类号： G02B5/04 ,  G02B5/30 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B11/10

CPC分类号： G11B7/131 ,  G02B5/04 ,  G02B5/3083 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1367

摘要： In an optical pickup apparatus, including a laser source (11) arranged along an optical axis (0-0'), a polarization beam splitter (14) and an objective lens (13), wherein light emitted from the laser source (11) is emitted on a recording plane (1a) of an optical-magnetical recording media (1) as a converged beam, light beams reflected from the recording media (1a) of the optical-magnetical recording media (1) are separated by said polarization beam splitter (14) to obtain a predetermined polarized light component, a phase change means, which changes a phase of light passing through one side of said optical axis (0-0') and a phase of light passing through another side of said optical axis (0-0') by a predetermined angle, such as 1/2 wavelength plate (15), a phase retardation type prism (39) and a combination optical rotation plate (52), is provided between the polarization beam splitter (14) and the objective lens (13), and, an optical detection element, which detects the light polarized by the polarization beam splitter (14), is provided at a side intersecting the phase change means of the polarization beam splitter (14).

摘要翻译： PCT No.PCT / JP93 / 00158 Sec。 371日期：1993年9月21日 102（e）日期1993年9月21日PCT提交1993年2月8日PCT公布。 公开号WO93 / 16469 日期：1993年8月19日在包括沿着光轴（0-0'）配置的激光源（11），偏振分束器（14）和物镜（13）的光拾取装置中， 激光源（11）作为会聚光束在光磁记录介质（1）的记录平面（1a）上发射，从光磁记录介质（1）的记录介质（1a）反射的光束是 由所述偏振分束器（14）分离以获得预定的偏振光分量;相位改变装置，其改变通过所述光轴（0-0'）的一侧的光的相位和通过另一个的光的相位 所述光轴（0-0'）的一侧具有预定角度，例如+ E，fra 1/2 + EE波片（15），相位延迟型棱镜（39）和组合旋转板（52） 设置在偏振光束分离器（14）和物镜（13）之间，以及光学检测元件 h检测由偏振分束器（14）偏振的光，设置在与偏振分束器（14）的相变装置相交的一侧。

公开(公告)号：US5742577A

公开(公告)日：1998-04-21

申请号：US685474

申请日：1996-07-24

申请人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

发明人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

IPC分类号： G02B5/04 ,  G02B5/30 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B11/10 ,  G11B7/00

CPC分类号： G11B7/131 ,  G02B5/04 ,  G02B5/3083 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1367

摘要： In an optical pickup apparatus, including a laser source arranged along an optical axis, a polarization beam splitter and an objective lens, wherein light emitted from the laser source is emitted on a recording plane of an optical-magnetical recording media as a converged beam, light beams reflected from the recording media of the optical-magnetical recording media are separated by said polarization beam splitter to obtain a predetermined polarized light component, a phase change means, which changes a phase of light passing through one side of said optical axis and a phase of light passing through another side of said optical axis by a predetermined angle, such as 1/2 wavelength plate, a phase retardation type prism and a combination optical rotation plate, is provided between the polarization beam splitter and the objective lens, and, an optical detection element, which detects the light polarized by the polarization beam splitter, is provided at a side intersecting the phase change means of the polarization beam splitter.

摘要翻译： 在包括沿着光轴布置的激光源的光学拾取装置中，偏振分束器和物镜，其中从激光源发射的光作为会聚光束发射在光磁记录介质的记录平面上， 从光磁记录介质的记录介质反射的光束被所述偏振分束器分离以获得预定的偏振光分量，相变装置改变通过所述光轴的一侧的光的相位和 在偏振光束分离器和偏振光分束器之间设置有通过光轴另一侧预定角度的光，例如+ E，fra 1/2 + EE波片，相位延迟型棱镜和组合旋转板 物镜和检测由偏振分束器偏振的光的光学检测元件设置在与pha相交的一侧 偏振分束器的改变装置。

公开(公告)号：US5563869A

公开(公告)日：1996-10-08

申请号：US394270

申请日：1995-02-24

申请人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

发明人： Hideyoshi Horimai ,  Katsuhiro Seo ,  Kimihiro Saito ,  Kiyoshi Toyota

IPC分类号： G02B5/04 ,  G02B5/30 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/131 ,  G02B5/04 ,  G02B5/3083 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1367

摘要： In an optical pickup apparatus, including a laser source arranged along an optical axis, a polarization beam splitter and an objective lens, wherein light emitted from the laser source is emitted on a recording plane of an optical-magnetical recording media as a converged beam, light beams reflected from the recording media of the optical-magnetical recording media are separated by said polarization beam splitter to obtain a predetermined polarized light component, a phase change means, which changes a phase of light passing through one side of said optical axis and a phase of light passing through another side of said optical axis by a predetermined angle, such as wavelength plate, a phase retardation type prism and a combination optical rotation plate, is provided between the polarization beam splitter and the objective lens, and, an optical detection element, which detects the light polarized by the polarization beam splitter, is provided at a side intersecting the phase change means of the polarization beam splitter.

摘要翻译： 在包括沿着光轴布置的激光源的光学拾取装置中，偏振分束器和物镜，其中从激光源发射的光作为会聚光束发射在光磁记录介质的记录平面上， 从光磁记录介质的记录介质反射的光束被所述偏振分束器分离以获得预定的偏振光分量，相变装置改变通过所述光轴的一侧的光的相位和 在偏振光束分离器和物镜之间设置有通过光轴另一侧预定角度的光的相位，例如波长板，相位延迟型棱镜和组合光旋转板，并且光学检测 检测由偏振分束器偏振的光的元件设置在与相变平均值相交的一侧 s的偏振分束器。

公开(公告)号：US07684305B2

公开(公告)日：2010-03-23

申请号：US11598579

申请日：2006-11-14

申请人： Yoshiki Okamoto ,  Katsuhiro Seo

发明人： Yoshiki Okamoto ,  Katsuhiro Seo

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B7/094 ,  G11B7/0943 ,  G11B7/1353

摘要： An optical pickup includes an optical system in which light from a light source is introduced through an objective lens into an optical recording medium and in which light reflected from the optical recording medium is introduced into a light-receiving unit and an objective lens driving unit for driving the objective lens based on a light output detected at said light-receiving unit. In this optical pickup, a diffraction element is provided between the light source and the objective lens, the diffraction element is provided with at least first and second diffraction areas and the first and second diffraction areas have such grating shapes that ± first-order diffracted lights diffracted are received by the light-receiving unit at the position in which 0-th order light and ± first-order diffracted lights generated from guide grooves of the optical recording medium may not overlap with each other.

摘要翻译： 光学拾取器包括光学系统，其中来自光源的光通过物镜被引入到光学记录介质中，并且其中从光学记录介质反射的光被引入光接收单元和物镜驱动单元 基于在所述光接收单元处检测到的光输出来驱动物镜。 在该光学拾取器中，在光源和物镜之间设置衍射元件，衍射元件设置有至少第一和第二衍射区域，并且第一和第二衍射区域具有这样的光栅形状，即±一级衍射光 衍射由光接收单元在从光记录介质的引导槽产生的0级光和±一级衍射光彼此不重叠的位置处接收。

公开(公告)号：US07336432B2

公开(公告)日：2008-02-26

申请号：US11214748

申请日：2005-08-31

申请人： Katsuhiro Seo ,  Yoshiaki Kato ,  Yoshiki Okamoto ,  Takeshi Yonezawa

发明人： Katsuhiro Seo ,  Yoshiaki Kato ,  Yoshiki Okamoto ,  Takeshi Yonezawa

IPC分类号： G02B9/06

CPC分类号： G11B7/13927 ,  G11B7/1376 ,  G11B7/24038

摘要： An optical pickup includes at least a laser light source emitting a laser beam, a collimator lens system including a plurality of lenses for collimating the light beam emitted from the laser light source and incident thereupon as diffused light, and an objective lens. The laser beam transmitted through the collimator lens system is incident upon the objective lens. The collimator lens system includes a first lens unit held so as to be movable in an optical axis direction of the laser beam and a fixed second lens unit.

摘要翻译： 光拾取器至少包括发射激光束的激光光源，准直透镜系统，其包括多个透镜，用于准直来自激光光源的光束并作为漫射光入射到其上;以及物镜。 透射准直透镜系统的激光束入射到物镜上。 准直透镜系统包括保持以能够在激光束的光轴方向上移动的第一透镜单元和固定的第二透镜单元。

公开(公告)号：US06246644B1

公开(公告)日：2001-06-12

申请号：US09098869

申请日：1998-06-17

申请人： Katsuhiro Seo

发明人： Katsuhiro Seo

IPC分类号： G11B712

CPC分类号： G11B7/00718 ,  G11B7/0909 ,  G11B7/22

摘要： An optical pickup minimizing the modulation caused on the focus error signal by grooves/lands or a train of pits, and implementing a stable focus servo operation. In an optical pickup adapted to obtain focus error information by means of an astigmatism system, the arranging state of an objective lens (5) is set so that a direction (DOB) of an astigmatism generated by the objective lens (5) will be a direction in a predetermined angle range with respect to a direction (DSD) of an astigmatism generated by an astigmatism generating element e.,g (cylindrical lens (7)). The predetermined range is an angle range of ±50° with respect to the direction (DSD) of the astigmatism.

摘要翻译： 一种光学拾取器，通过凹槽/平台或一系列凹坑来最小化对聚焦误差信号造成的调制，并实现稳定的聚焦伺服操作。 在适于通过像散系统获得聚焦误差信息的光学拾取器中，物镜（5）的布置状态被设置为使得由物镜（5）产生的散光的方向（DOB）将为 相对于由散光生成元件e，g（柱面透镜（7））产生的像散的方向（DSD）在预定角度范围内的方向。 预定范围是相对于像散方向（DSD）的±50°的角度范围。

公开(公告)号：US5249167A

公开(公告)日：1993-09-28

申请号：US735381

申请日：1991-07-24

申请人： Katsuhiro Seo

发明人： Katsuhiro Seo

IPC分类号： G11B11/10 ,  G11B7/09 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105

CPC分类号： G11B7/1381 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1378 ,  G11B7/0912

摘要： The present invention provides an optical pickup apparatus for reading informational signals written in a recording medium such as magneto-optical disc in which a flux of reflected light from a recording medium which is irradiated with a flux of light in inclinedly incident from one side upon a flat plate like transparent member having one side which is a polarization reflection surface and the other side which is a total reflection surface and fluxes of light reflected on the one side and the other side of the flat plate like transparent member are detected by a photo detecting element, whereby simplification of the structure is achieved.

公开(公告)号：US08411548B2

公开(公告)日：2013-04-02

申请号：US12858520

申请日：2010-08-18

申请人： Kazuhiko Nemoto ,  Katsuhiro Seo ,  Tamotsu Ishii

发明人： Kazuhiko Nemoto ,  Katsuhiro Seo ,  Tamotsu Ishii

IPC分类号： G11B7/13

CPC分类号： G11B7/133 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0013

摘要： An optical pickup includes a light source emitting a light beam, a diffraction element diffracting the light beam to separate it into a main beam and a sub beam, an objective lens focusing the main and sub beams onto a desired recording layer of an optical disc, a lens moving section moving the objective lens in focusing and tracking directions, a light-separating element separating a reflected light beam, formed by reflecting each of the main and sub beams at the recording layer, into multiple beam components and allowing the reflected light beam to travel without rotating an image thereof, and a light-receiving element having multiple light-receiving regions that optically receive the reflected light beam and generating a light reception signal based on the amount of received light to allow a signal processing section to generate a focus error signal and a tracking error signal based on the light reception signal.

摘要翻译： 光拾取器包括发射光束的光源，衍射光束以将其分离成主光束和副光束的衍射元件，将主光束和子光束聚焦到光盘的期望记录层上的物镜， 在聚焦和跟踪方向移动物镜的透镜移动部分，将通过将记录层中的每个主光束和副光束反射而形成的反射光束分离成多个光束分量并允许反射光束 在不旋转图像的情况下行进;以及光接收元件，具有光接收反射光束的多个光接收区域，并且基于接收光量产生光接收信号，以允许信号处理部分产生焦点 误差信号和基于光接收信号的跟踪误差信号。

公开(公告)号：US20120001090A1

公开(公告)日：2012-01-05

申请号：US12829070

申请日：2010-07-01

申请人： Koji Takasaki ,  Katsuhiro Seo ,  Mitsuru Toishi ,  Shinji Yamada ,  Atsushi Fukumoto ,  Gary Durack

发明人： Koji Takasaki ,  Katsuhiro Seo ,  Mitsuru Toishi ,  Shinji Yamada ,  Atsushi Fukumoto ,  Gary Durack

IPC分类号： G01J1/58

CPC分类号： G01N15/1434 ,  G01J3/024 ,  G01J3/1256 ,  G01N15/1459 ,  G01N21/53 ,  G01N21/645 ,  G02B6/14 ,  G02B6/32 ,  G02B6/4215

摘要： A minute particle analyzing device includes: a light source; a first condenser lens for condensing light from the light source to a first end of a multimode optical fiber; a second condenser lens for condensing the light emerging from a second end of the multimode optical fiber to a minute particle; and a detector for detecting light generated from the minute particle by the application of the light from the light source.

摘要翻译： 微粒分析装置包括：光源; 用于将来自光源的光聚焦到多模光纤的第一端的第一聚光透镜; 第二聚光透镜，用于将从多模光纤的第二端出射的光聚焦到微小颗粒; 以及检测器，用于通过施加来自光源的光来检测由微粒产生的光。

公开(公告)号：US20110044152A1

公开(公告)日：2011-02-24

申请号：US12858520

申请日：2010-08-18

申请人： Kazuhiko Nemoto ,  Katsuhiro Seo ,  Tamotsu Ishii

发明人： Kazuhiko Nemoto ,  Katsuhiro Seo ,  Tamotsu Ishii

IPC分类号： G11B7/135 ,  F21V5/00

CPC分类号： G11B7/133 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0013

摘要： An optical pickup includes a light source emitting a light beam, a diffraction element diffracting the light beam to separate it into a main beam and a sub beam, an objective lens focusing the main and sub beams onto a desired recording layer of an optical disc, a lens moving section moving the objective lens in focusing and tracking directions, a light-separating element separating a reflected light beam, formed by reflecting each of the main and sub beams at the recording layer, into multiple beam components and allowing the reflected light beam to travel without rotating an image thereof, and a light-receiving element having multiple light-receiving regions that optically receive the reflected light beam and generating a light reception signal based on the amount of received light to allow a signal processing section to generate a focus error signal and a tracking error signal based on the light reception signal.

摘要翻译： 光拾取器包括发射光束的光源，衍射光束以将其分离成主光束和副光束的衍射元件，将主光束和子光束聚焦到光盘的期望记录层上的物镜， 在聚焦和跟踪方向移动物镜的透镜移动部分，将通过将记录层中的每个主光束和副光束反射而形成的反射光束分离成多个光束分量并允许反射光束 在不旋转图像的情况下行进;以及光接收元件，具有光接收反射光束的多个光接收区域，并且基于接收光量产生光接收信号，以允许信号处理部分产生焦点 误差信号和基于光接收信号的跟踪误差信号。