公开(公告)号：US5903529A

公开(公告)日：1999-05-11

申请号：US919788

申请日：1997-08-29

申请人： Noriaki Nishi ,  Kimihiro Saito ,  Kazuyoshi Horie ,  Yasuo Sasaki ,  Kenji Araki ,  Kazuhiko Okamatsu

发明人： Noriaki Nishi ,  Kimihiro Saito ,  Kazuyoshi Horie ,  Yasuo Sasaki ,  Kenji Araki ,  Kazuhiko Okamatsu

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/13 ,  G11B7/135 ,  G11B11/105

CPC分类号： G11B7/1359 ,  G11B11/10543 ,  G11B7/0901 ,  G11B7/123 ,  G11B7/131 ,  G11B11/10576 ,  G11B7/0908 ,  G11B7/094 ,  G11B7/0943

摘要： A small size, high performance optical pickup device using a light reception/emission element (laser coupler) and more particularly, an optical pickup device which is capable of excellent recording and reproduction for a magnetic optical recording medium. A prism disposed over optical detectors is made of double refractive crystal material. An optical detector for receiving extraordinary ray is formed at a position laterally deviated corresponding to so-called walk-off of the extraordinary ray. Tracking error signal is detected depending on a distribution of intensities of spots formed by reflective beams on respective optical detectors.

摘要翻译： 一种使用光接收/发射元件（激光耦合器）的小尺寸，高性能光学拾取装置，更具体地说，一种能够对磁光记录介质进行优良的记录和再现的光学拾取装置。 设置在光学检测器上的棱镜由双折射晶体材料制成。 用于接收非凡光线的光学检测器形成在与所谓的异常光线的脱离相对应的横向偏离的位置处。 根据由各个光学检测器上的反射光束形成的光斑强度的分布来检测跟踪误差信号。

公开(公告)号：US5796701A

公开(公告)日：1998-08-18

申请号：US667835

申请日：1996-06-20

申请人： Noriaki Nishi ,  Kimihiro Saito ,  Shuichi Matsumoto ,  Masato Hattori

发明人： Noriaki Nishi ,  Kimihiro Saito ,  Shuichi Matsumoto ,  Masato Hattori

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/1356 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/0901 ,  G11B7/0912

摘要： An optical pickup includes a polarization component separation element which is formed as a unit or single piece of birefringence material. The separation element is not laminated obviating the need to carefully match the optical axes of the laminated pieces. Multiple reflections within the birefringent crystal which comprises the separation element improves the separation and resolution of the polarized components which are extracted from a laser beam reflected back off the media surface.

公开(公告)号：US5732060A

公开(公告)日：1998-03-24

申请号：US607448

申请日：1996-02-27

申请人： Kiyoshi Toyota ,  Kimihiro Saito ,  Noriaki Nishi ,  Hitoshi Tamada ,  Shuichi Matsumoto

发明人： Kiyoshi Toyota ,  Kimihiro Saito ,  Noriaki Nishi ,  Hitoshi Tamada ,  Shuichi Matsumoto

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

CPC分类号： G11B7/1353 ,  G11B11/10543 ,  G11B7/123 ,  G11B7/1356

摘要： An optical pickup and an optical recording medium reproducing apparatus smaller and more reliable than conventional optical pickups and optical recording medium reproducing apparatuses. These are provided with a one-dimensional metal grid which is formed so that the ratio h/d that the pitch "d" and the thickness of metal conductors "h" constituting the wire grid is about 0.1 or more, and also a group of light receiving units which receive light beams split by the one-dimensional metal grid.

摘要翻译： 光学拾取器和光记录介质再现装置比常规光学拾取器和光学记录介质再现装置更小且更可靠。 它们设置有一维金属格栅，其形成为使得构成网格的间距“d”和金属导体“h”的厚度的比率h / d为约0.1以上，还包括一组 接收由一维金属网格分裂的光束的光接收单元。

公开(公告)号：US08305866B2

公开(公告)日：2012-11-06

申请号：US12951967

申请日：2010-11-22

申请人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

发明人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/0953 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/13927

摘要： A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator, wherein a coma aberration generated by the transverse shift of the object lens is corrected by a coma aberration which is generated by the deviation of a spherical aberration generated in an optical path from the light source to the object lens and a spherical aberration generated in an optical path from the object lens to a light concentration position on the optical recording medium which are due to the transverse shift.

摘要翻译： 拾取装置包括光源; 光分离器 将透过光分离器的光集中在光记录介质上的物镜; 可移动镜头; 以及光接收来自由光分离器分离的光记录介质的反射光的光感测元件，其中由透镜的横向偏移产生的彗形像差由通过球面像差的偏差产生的彗差来校正 在从光源到物镜的光路中产生的球面像差，以及由于横向偏移而从物镜到光记录介质上的光聚集位置的光路中产生的球面像差。

公开(公告)号：US5748368A

公开(公告)日：1998-05-05

申请号：US576686

申请日：1995-12-21

申请人： Hitoshi Tamada ,  Shuichi Matsumoto ,  Noriaki Nishi ,  Kimihiro Saito

发明人： Hitoshi Tamada ,  Shuichi Matsumoto ,  Noriaki Nishi ,  Kimihiro Saito

IPC分类号： G02B5/30

CPC分类号： G02B5/3058

摘要： A polarization optical element causes minimum loss and provides light in the visible and near-infrared regions with practically satisfactory polarization contrast even when the grid period is comparatively long. Metal grids 1 are formed on a substrate 2 with a refractive index n.sub.1 to satisfy conditions 0.2

摘要翻译： 偏振光学元件造成最小的损失，并且即使在电网周期比较长的时候，也可以在可见光和近红外区域提供实际令人满意的偏振对比度的光。 金属栅格1形成在折射率为n1的基片2上，以满足条件0.2

公开(公告)号：US08953424B2

公开(公告)日：2015-02-10

申请号：US13485144

申请日：2012-05-31

申请人： Kimihiro Saito ,  Noriaki Nishi

发明人： Kimihiro Saito ,  Noriaki Nishi

IPC分类号： G11B7/00 ,  G11B7/09

CPC分类号： G11B7/0903

摘要： An optical-recording-medium driving apparatus includes: a light irradiating/receiving section configured to irradiate light on a medium so as to form a first side spot, a main spot, and a second side spot, and to receive reflection light from the individual spots; a first delay section configured to delay a light reception signal on the first side spot in accordance with a disposition interval between the first and the second side spots; a second delay section configured to delay a light reception signal on the main spot in accordance with a disposition interval between the main and second side spots; and a tracking-error-signal generation section configured to generate a tracking error signal on the basis of a correlation between delayed light reception signals on the first side spot and the main spot, and a correlation between the light reception signals on the second side spot and the main spot.

摘要翻译： 光记录介质驱动装置包括：光照射/接收部分，被配置为将光照射在介质上以形成第一侧光点，主光点和第二侧光斑，并且接收来自该个体的反射光 斑点 第一延迟部，被配置为根据第一和第二侧光斑之间的配置间隔延迟第一侧光点处的光接收信号; 第二延迟部，被配置为根据所述主侧和第二侧光斑之间的配置间隔延迟所述主光点上的光接收信号; 以及跟踪误差信号生成部，被配置为基于第一侧点的延迟光接收信号和主光点之间的相关性以及第二侧光点上的光接收信号之间的相关性来生成跟踪误差信号 和主要地点。

公开(公告)号：US20120320721A1

公开(公告)日：2012-12-20

申请号：US13485144

申请日：2012-05-31

申请人： Kimihiro Saito ,  Noriaki Nishi

发明人： Kimihiro Saito ,  Noriaki Nishi

IPC分类号： G11B7/00

CPC分类号： G11B7/0903

摘要： An optical-recording-medium driving apparatus includes: a light irradiating/receiving section configured to irradiate light on a medium so as to form a first side spot, a main spot, and a second side spot, and to receive reflection light from the individual spots; a first delay section configured to delay a light reception signal on the first side spot in accordance with a disposition interval between the first and the second side spots; a second delay section configured to delay a light reception signal on the main spot in accordance with a disposition interval between the main and second side spots; and a tracking-error-signal generation section configured to generate a tracking error signal on the basis of a correlation between delayed light reception signals on the first side spot and the main spot, and a correlation between the light reception signals on the second side spot and the main spot.

摘要翻译： 光记录介质驱动装置包括：光照射/接收部分，被配置为将光照射在介质上以形成第一侧光点，主光点和第二侧光斑，并且接收来自该个体的反射光 斑点 第一延迟部，被配置为根据第一和第二侧光斑之间的配置间隔延迟第一侧光点处的光接收信号; 第二延迟部，被配置为根据所述主侧和第二侧光斑之间的配置间隔延迟所述主光点上的光接收信号; 以及跟踪误差信号生成部，被配置为基于第一侧点的延迟光接收信号和主光点之间的相关性以及第二侧光点上的光接收信号之间的相关性来生成跟踪误差信号 和主要地点。

公开(公告)号：US08477580B2

公开(公告)日：2013-07-02

申请号：US13225764

申请日：2011-09-06

申请人： Kenji Yamamoto ,  Noriaki Nishi ,  Kimihiro Saito

发明人： Kenji Yamamoto ,  Noriaki Nishi ,  Kimihiro Saito

IPC分类号： G11B7/095 ,  G11B7/135

CPC分类号： G11B7/1374 ,  G11B7/0956 ,  G11B7/13927 ,  G11B2007/0009

摘要： Provided is an objective lens, which is provided in an optical pickup including a spherical aberration correction mechanism which performs a spherical aberration correction with respect to laser light applied to a recording layer of an optical recording medium, having the recording layer on which information can be recorded at a plurality of positions in a depth direction, via the objective lens, and a tilt correction unit which varies a lens tilt angle which is a tilt angle of the objective lens, thereby performing a tilt correction.

摘要翻译： 提供一种物镜，其设置在包括球面像差校正机构的光学拾取器中，所述球面像差校正机构对于施加到光学记录介质的记录层的激光进行球面像差校正，其具有信息可以在其上的记录层 通过物镜在深度方向上的多个位置记录，以及倾斜校正单元，其改变作为物镜的倾斜角度的透镜倾斜角度，从而进行倾斜校正。

公开(公告)号：US20120063287A1

公开(公告)日：2012-03-15

申请号：US13225764

申请日：2011-09-06

申请人： Kenji Yamamoto ,  Noriaki Nishi ,  Kimihiro Saito

发明人： Kenji Yamamoto ,  Noriaki Nishi ,  Kimihiro Saito

IPC分类号： G11B7/135 ,  G02B7/02

CPC分类号： G11B7/1374 ,  G11B7/0956 ,  G11B7/13927 ,  G11B2007/0009

摘要： Provided is an objective lens, which is provided in an optical pickup including a spherical aberration correction mechanism which performs a spherical aberration correction with respect to laser light applied to a recording layer of an optical recording medium, having the recording layer on which information can be recorded at a plurality of positions in a depth direction, via the objective lens, and a tilt correction unit which varies a lens tilt angle which is a tilt angle of the objective lens, thereby performing a tilt correction.

摘要翻译： 提供一种物镜，其设置在包括球面像差校正机构的光学拾取器中，所述球面像差校正机构对于施加到光学记录介质的记录层的激光进行球面像差校正，其具有信息可以在其上的记录层 通过物镜在深度方向上的多个位置记录，以及倾斜校正单元，其改变作为物镜的倾斜角度的透镜倾斜角度，从而进行倾斜校正。

公开(公告)号：US20110134742A1

公开(公告)日：2011-06-09

申请号：US12951967

申请日：2010-11-22

申请人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

发明人： Norihiro Tanabe ,  Kimihiro Saito ,  Takahiro Miura ,  Yojiro Sumi ,  Noriaki Nishi

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/0953 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/13927

摘要： A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator, wherein a coma aberration generated by the transverse shift of the object lens is corrected by a coma aberration which is generated by the deviation of a spherical aberration generated in an optical path from the light source to the object lens and a spherical aberration generated in an optical path from the object lens to a light concentration position on the optical recording medium which are due to the transverse shift.

摘要翻译： 拾取装置包括光源; 光分离器 将透过光分离器的光集中在光记录介质上的物镜; 可移动镜头; 以及光接收来自由光分离器分离的光记录介质的反射光的光感测元件，其中由透镜的横向偏移产生的彗形像差由通过球面像差的偏差产生的彗差来校正 在从光源到物镜的光路中产生的球面像差，以及由于横向偏移而从物镜到光记录介质上的光聚集位置的光路中产生的球面像差。