公开(公告)号：US20090219799A1

公开(公告)日：2009-09-03

申请号：US12370965

申请日：2009-02-13

申请人： Ariyoshi NAKAOKI ,  Kimihiro Saito

发明人： Ariyoshi NAKAOKI ,  Kimihiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/1387 ,  G11B7/0908 ,  G11B7/1275 ,  G11B2007/0013

摘要： An optical pickup device has a near-field optical system having a numerical aperture of NA>1; a first light source emitting a first light having a first wavelength; a second light source emitting a second light having a second wavelength; an optical system multiplexing the first light and second light and irradiating the multiplexed light onto an optical recording medium having at least two recording layers; a first photodetector detecting the first light returned from the recording medium a second photodetector detecting the second light returned from the recording medium; a controller obtaining a signal corresponding to distance between the near-field optical system and the recording medium based on the returned second light, and obtaining a reproducing signal and a tracking signal of the recording medium and a focus signal corresponding to the recording layer based on the returned first light; and a focus position adjustment mechanism moving a focus position of the first light under control of the focus signal.

摘要翻译： 光学拾取装置具有数值孔径NA> 1的近场光学系统; 发射具有第一波长的第一光的第一光源; 发射具有第二波长的第二光的第二光源; 将所述第一光和第二光复用并将所述复用光照射到具有至少两个记录层的光学记录介质上的光学系统; 第一光电检测器，检测从记录介质返回的第一光，第二光电检测器检测从记录介质返回的第二光; 控制器基于返回的第二光获取对应于近场光学系统和记录介质之间的距离的信号，并且基于返回的第二光获得记录介质的再现信号和跟踪信号以及对应于记录层的聚焦信号 返回的第一盏灯; 以及聚焦位置调整机构，在聚焦信号的控制下移动第一光的聚焦位置。

公开(公告)号：US20080062854A1

公开(公告)日：2008-03-13

申请号：US11628357

申请日：2005-06-13

申请人： Ariyoshi Nakaoki ,  Masanobu Yamamoto ,  Kimihiro Saito

发明人： Ariyoshi Nakaoki ,  Masanobu Yamamoto ,  Kimihiro Saito

IPC分类号： G11B19/00

CPC分类号： G11B7/006 ,  G11B7/1374 ,  G11B7/1387 ,  G11B7/2405 ,  G11B7/24082 ,  G11B7/26

摘要： The present invention relates to an optical disc on which an information signal can be rewritten. Guide grooves (81a) for tracking control are formed on respective tracks of the rewritable area where an information signal can be rewritten. A recording layer (83) onto which an information signal is to be written is laminated on a substrate on which the guide grooves (81a) have been formed. The information signal can be rewritten on the recording layer (83) at least in the rewritable area using near-field light based on multibeam. Concave portions (85a) are formed on the outermost surface of the disc recording medium in correspondence with the positions of the guide grooves (81a).

摘要翻译： 本发明涉及可以重写信息信号的光盘。 用于跟踪控制的引导槽（81a）形成在可重写区域的各个轨道上，其中可以重写信息信号。 要在其上写入信息信号的记录层（83）层叠在其上形成有引导槽（81a）的基板上。 至少在可重写区域中，可以使用基于多波束的近场光将信息信号重写在记录层（83）上。 对应于引导槽（81a）的位置，在盘记录介质的最外表面上形成有凹部（85a）。

公开(公告)号：US20060256695A1

公开(公告)日：2006-11-16

申请号：US11382975

申请日：2006-05-12

申请人： Kimihiro Saito ,  Takeshi Yamasaki ,  Ariyoshi Nakaoki

发明人： Kimihiro Saito ,  Takeshi Yamasaki ,  Ariyoshi Nakaoki

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/139 ,  B82Y10/00 ,  G11B7/1387 ,  G11B7/24 ,  G11B7/24059 ,  G11B7/243

摘要： An optical recording medium illuminated by light from a light source as near-field light using a focusing lens whose numerical aperture exceeds 1 to perform recording and/or reproduction is provided, wherein a composite layer in which a high refractive index material portion having a refractive index higher than that of a light-transmissible material portion is mixed in the light-transmissible material portion is provided on the surface of a light incident side of the optical recording medium. With an average refractive index of the composite layer being high, a numerical aperture controlled by a refractive index of a surface layer can be made large to obtain higher resolution and higher durability against contact with a lens or the like.

摘要翻译： 提供了一种使用数字孔径超过1的聚焦透镜从光源照射的光记录介质作为近场光，以进行记录和/或再现，其中复合层具有折射率高的材料部分 在光记录介质的光入射侧的表面上设置透光性材料部分中比透光材料部分高的指数。 由于复合层的平均折射率高，所以可以使由表面层的折射率控制的数值孔径大，以获得更高的分辨率和更高的抵抗与透镜等接触的耐久性。

公开(公告)号：US08031575B2

公开(公告)日：2011-10-04

申请号：US12370965

申请日：2009-02-13

申请人： Ariyoshi Nakaoki ,  Kimihiro Saito

发明人： Ariyoshi Nakaoki ,  Kimihiro Saito

IPC分类号： G11B7/135

CPC分类号： G11B7/1387 ,  G11B7/0908 ,  G11B7/1275 ,  G11B2007/0013

摘要： An optical pickup device has a near-field optical system having a numerical aperture of NA>1; a first light source emitting a first light having a first wavelength; a second light source emitting a second light having a second wavelength; an optical system multiplexing the first light and second light and irradiating the multiplexed light onto an optical recording medium having at least two recording layers; a first photodetector detecting the first light returned from the recording medium a second photodetector detecting the second light returned from the recording medium; a controller obtaining a signal corresponding to distance between the near-field optical system and the recording medium based on the returned second light, and obtaining a reproducing signal and a tracking signal of the recording medium and a focus signal corresponding to the recording layer based on the returned first light; and a focus position adjustment mechanism moving a focus position of the first light under control of the focus signal.

摘要翻译： 光学拾取装置具有数值孔径NA> 1的近场光学系统; 发射具有第一波长的第一光的第一光源; 发射具有第二波长的第二光的第二光源; 将所述第一光和第二光复用并将所述复用光照射到具有至少两个记录层的光学记录介质上的光学系统; 第一光电检测器，检测从记录介质返回的第一光，第二光电检测器检测从记录介质返回的第二光; 控制器基于返回的第二光获取对应于近场光学系统和记录介质之间的距离的信号，并且基于返回的第二光获得记录介质的再现信号和跟踪信号以及对应于记录层的聚焦信号 返回的第一盏灯; 以及聚焦位置调整机构，在聚焦信号的控制下移动第一光的聚焦位置。

公开(公告)号：US07583580B2

公开(公告)日：2009-09-01

申请号：US11382975

申请日：2006-05-12

申请人： Kimihiro Saito ,  Takeshi Yamasaki ,  Ariyoshi Nakaoki

发明人： Kimihiro Saito ,  Takeshi Yamasaki ,  Ariyoshi Nakaoki

IPC分类号： G11B7/00

CPC分类号： G11B7/139 ,  B82Y10/00 ,  G11B7/1387 ,  G11B7/24 ,  G11B7/24059 ,  G11B7/243

摘要： An optical recording medium illuminated by light from a light source as near-field light using a focusing lens whose numerical aperture exceeds 1 to perform recording and/or reproduction is provided, wherein a composite layer in which a high refractive index material portion having a refractive index higher than that of a light-transmissible material portion is mixed in the light-transmissible material portion is provided on the surface of a light incident side of the optical recording medium. With an average refractive index of the composite layer being high, a numerical aperture controlled by a refractive index of a surface layer can be made large to obtain higher resolution and higher durability against contact with a lens or the like.

摘要翻译： 提供了一种使用数字孔径超过1的聚焦透镜从光源照射的光记录介质作为近场光，以进行记录和/或再现，其中复合层具有折射率高的材料部分 在光记录介质的光入射侧的表面上设置透光性材料部分中比透光材料部分高的指数。 由于复合层的平均折射率高，所以可以使由表面层的折射率控制的数值孔径大，以获得更高的分辨率和更高的抵抗与透镜等接触的耐久性。

公开(公告)号：US20080089210A1

公开(公告)日：2008-04-17

申请号：US11785952

申请日：2007-04-23

申请人： Kimihiro Saito ,  Ariyoshi Nakaoki

发明人： Kimihiro Saito ,  Ariyoshi Nakaoki

IPC分类号： G11B7/135 ,  G02B1/11

CPC分类号： G11B7/1387 ,  G11B7/1374 ,  G11B2007/13727

摘要： A solid immersion lens includes a spherical part being hemispherical on the side opposite to an object and an anti-reflection coating provided at least in an incidence range of incident light on the hemispherical spherical part.

摘要翻译： 固体浸没透镜包括在与物体相反的一侧为半球形的球形部分和至少在入射光的半球形球形部分的入射范围内提供的抗反射涂层。

公开(公告)号：US06243327B1

公开(公告)日：2001-06-05

申请号：US09473657

申请日：1999-12-29

申请人： Ariyoshi Nakaoki ,  Kimihiro Saito

发明人： Ariyoshi Nakaoki ,  Kimihiro Saito

IPC分类号： G11B1100

CPC分类号： B82Y10/00 ,  G11B7/1372 ,  G11B11/10534 ,  G11B11/10545 ,  G11B11/10584 ,  G11B11/10591 ,  G11B11/10593

摘要： The object of the present invention is to improve the accuracy of a recording signal and a reproduction signal of a magneto-optical recording medium. In a magneto-optical recording medium (2) having at least a metallic reflection layer (3), a back dielectric layer (4), a magneto-optical recording layer (5) and a light transmitting dielectric layer (6) sequentially provided on a substrate (8), the thickness of the light transmitting dielectric layer (6) closer to a convergent lens (1) is set at 50 to 80 nm. Alternatively, the refraction index n of the light transmitting dielectric layer (6) is selected to satisfy the relationship of n0×0.8≦n with the refraction index n0 of the convergent lens (1).

摘要翻译： 本发明的目的是提高磁光记录介质的记录信号和再现信号的精度。 在具有至少金属反射层（3）的磁光记录介质（2）中，背面介电层（4），磁光记录层（5）和光传输介质层（6）依次设置在 基板（8）将透光电介质层（6）的接近聚光透镜（1）的厚度设定为50〜80nm。 或者，选择透光电介质层（6）的折射率n以满足n0x0.8 <= n与会聚透镜（1）的折射率n0的关系。

公开(公告)号：US20130142028A1

公开(公告)日：2013-06-06

申请号：US13817033

申请日：2011-08-11

申请人： Toshiyuki Kashiwagi ,  Yoshihiro Akimoto ,  Kimihiro Saito ,  Akiya Saito

发明人： Toshiyuki Kashiwagi ,  Yoshihiro Akimoto ,  Kimihiro Saito ,  Akiya Saito

IPC分类号： G11B7/007

CPC分类号： G11B7/00736 ,  G11B7/24085 ,  G11B7/261 ,  G11B7/263

摘要： The present disclosure relates to an optical recording medium and a manufacturing method for an optical recording medium capable of obtaining an appropriate reproduction signal, as a bar code-shaped recording region (BCA) on an optical recording medium.This recording region (BCA) is provided that includes high reflection rate regions and low reflection rate regions which appear alternately in the track line direction, and each of the high reflection rate regions and the low reflection rate regions is formed to be continuous in the track pitch direction, whereby a bar code-shaped reflection pattern is formed, and information is recorded with the reflection pattern. In the BCA, the low reflection rate region is formed with pit strings. The high reflection rate region and the low reflection rate region are formed to satisfy: S+M/2≦0.6H, where a signal level of a reproduction signal obtained from a reflection light in the high reflection rate region is denoted as “H”, a signal level of a reproduction signal obtained from a reflection light in the low reflection rate region is denoted as “S”, and a degree of modulation of the reproduction signal obtained from the reflection light in the low reflection rate region is denoted as “M”.

摘要翻译： 本发明涉及一种能够获得合适的再现信号的光学记录介质的光学记录介质和制造方法，作为光学记录介质上的条形码记录区域（BCA）。 提供该记录区域（BCA），其包括在轨迹线方向上交替出现的高反射率区域和低反射率区域，并且高反射率区域和低反射率区域中的每一个在轨道中形成为连续的 俯仰方向，由此形成条形码反射图案，并且用反射图案记录信息。 在BCA中，低反射率区域形成有凹坑串。 形成高反射率区域和低反射率区域，以满足：S + M 2 + 0.6H，其中从高反射率区域中的反射光获得的再现信号的信号电平被表示为“H” 将从低反射率区域的反射光获得的再现信号的信号电平表示为“S”，将从低反射率区域的反射光获得的再现信号的调制度表示为“ M“。

公开(公告)号：US20110096648A1

公开(公告)日：2011-04-28

申请号：US12906477

申请日：2010-10-18

申请人： Kimihiro Saito ,  Takeshi Kubo ,  Norihiro Tanabe

发明人： Kimihiro Saito ,  Takeshi Kubo ,  Norihiro Tanabe

IPC分类号： G11B7/12

CPC分类号： G11B7/0956 ,  G11B7/0065 ,  G11B2007/0013

摘要： An optical drive device for performing information recording or reproduction of recorded information by formation of a mark by focusing a first light at a necessary position in a recording layer of an optical recording medium by an objective lens includes a position control unit configured to focus a second light on a reflection film, in which a position guide element of the optical recording medium is formed, through the objective lens and to enable the spot position of the second light to follow the position guide element based on the reflected light of the second light focused on the reflection film so as to control the position of the objective lens. The optical drive device further includes a first focusing unit, a first light-sensing portion, and a surface reflection light deviation amount detection unit.

摘要翻译： 一种光学驱动装置，用于通过用物镜聚焦在光学记录介质的记录层中的必要位置处的第一光来形成标记来执行记录信息的记录或再现，所述光学驱动装置包括：位置控制单元， 通过物镜形成光记录介质的位置引导元件的反射膜上的光，并且能够基于第二光聚焦的反射光使第二光的光点位置跟随位置引导元件 在反射膜上，以便控制物镜的位置。 光驱装置还包括第一聚焦单元，第一光感测部分和表面反射光偏差量检测单元。

公开(公告)号：US20100322062A1

公开(公告)日：2010-12-23

申请号：US12815758

申请日：2010-06-15

申请人： Kimihiro Saito ,  Norihiro Tanabe ,  Shiori Tashiro

发明人： Kimihiro Saito ,  Norihiro Tanabe ,  Shiori Tashiro

IPC分类号： G11B7/135

CPC分类号： G11B7/0908 ,  G11B7/1362 ,  G11B7/1365 ,  G11B7/24 ,  G11B7/24038 ,  G11B2007/0013

摘要： An optical pickup includes: a light source that emits a light beam; an object lens that focuses the light beam on an optical disc having a recording layer formed of a fluorescent recording material and a reflecting section adjacent to the recording layer, the recording layer generating, according to presence or absence of a recording mark representing information, a reproduction light beam having wavelength different from that of the light beam when the light beam is irradiated thereon from the light beam, and the reflecting section reflecting the light beam; a wavelength selecting element that separates, from the reproduction light beam, a reflected light beam reflected by the reflecting section of the optical disc and having wavelength equivalent to that of the light beam; and a reflected light detector that receives the reflected light beam separated by the wavelength selecting element and generates a position detection signal.

摘要翻译： 光拾取器包括：发射光束的光源; 将光束聚焦在具有由荧光记录材料形成的记录层和与记录层相邻的反射部分的光盘上的物镜，所述记录层根据是否存在代表信息的记录标记产生 当从光束照射光束时，具有与光束波长不同的波长的再现光束和反射光束的反射部分; 波长选择元件，其从再现光束分离由光盘的反射部分反射并具有与光束相同的波长的反射光束; 以及反射光检测器，其接收由波长选择元件分离的反射光束并产生位置检测信号。