公开(公告)号：US07230902B2

公开(公告)日：2007-06-12

申请号：US10714866

申请日：2003-11-18

申请人： Kimihiro Saito ,  Tsutomu Ishimoto

发明人： Kimihiro Saito ,  Tsutomu Ishimoto

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G02B27/283 ,  G11B7/09 ,  G11B7/1356 ,  G11B7/1381 ,  G11B7/1387 ,  G11B11/10532 ,  G11B11/10576 ,  G11B2007/13727

摘要： An optical pickup device and an optical recording and reproducing apparatus are suitable for use with a near-field optical recording and reproducing system. An optical pickup device comprises an objective lens composed of a solid immersion lens (SIL), the objective lens having a numerical aperture greater than 1, a beam splitter 102 for reflecting both of a p-polarized light component and an s-polarized light component of reflected lights from an optical recording medium when the optical pickup device irradiates the optical recording medium with a bundle of rays in a predetermined polarized state from a light source through the objective lens to detect a component in the polarized state perpendicular to the polarized state of reflected light obtained when a distance between the surface of this optical recording medium and the flat surface portion of the solid immersion lens (SIL) is zero to produce a signal corresponding to the distance between the surface of the optical recording medium and the flat surface portion of the solid immersion lens, a dividing means 110 for dividing incident light into a p-polarized light component and an s-polarized light component reflected by the beam splitter 102 and a photo-detecting means 120 for separately detecting the p-polarized light component and the s-polarized light component divided by the dividing means 110.

摘要翻译： 光学拾取装置和光学记录和再现装置适用于近场光学记录和再现系统。 光学拾取装置包括由固体浸没透镜（SIL）构成的物镜，物镜的数值孔径大于1;分束器102，用于反射p偏振光分量和s偏振光分量 当光学拾取装置通过物镜从光源以预定的偏振态以一束光线照射光记录介质时，检测来自光记录介质的反射光，以检测垂直于偏振态的偏振态的分量 当该光学记录介质的表面与固体浸没透镜（SIL）的平坦表面部分之间的距离为零时获得的反射光产生对应于光学记录介质的表面与平面部分之间的距离的信号 的固体浸没透镜，用于将入射光分解成p偏振光分量和s-pol的分割装置110 由分束器102反射的光分量的光分量和用于分别检测由分割装置110分割的p偏振光分量和s偏振光分量的光检测装置120。

公开(公告)号：US07106683B2

公开(公告)日：2006-09-12

申请号：US10415103

申请日：2002-08-27

申请人： Kimihiro Saito ,  Tsutomu Ishimoto

发明人： Kimihiro Saito ,  Tsutomu Ishimoto

IPC分类号： G11B7/135

CPC分类号： G11B11/10576 ,  B82Y10/00 ,  G11B7/0908 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1374 ,  G11B7/1387 ,  G11B7/139 ,  G11B2007/13727

摘要： An optical pickup device includes an objective lens (2), with a numerical aperture (NA) being not less than 1, having a solid immersion lens (1) which is made up by a spherical portion (1a) and a flat portion (1b) parallel to a surface (101a) of an optical disc (101). The component of the reflected light from the optical disc in the polarized state perpendicular to the polarized state of the reflected light which prevails when the distance between the surface of the optical disc and the flat portion of the solid immersion lens is zero is detected. The so detected light intensity is associated with the distance between the optical disc surface and the solid immersion lens to accurately detect the minute gap between the optical disc and the solid immersion lens.

摘要翻译： 一种光学拾取装置，包括数值孔径（NA）不小于1的物镜（2），具有由球形部分（1a）和平坦部分（1a）构成的固体浸没透镜（1） 1b）平行于光盘（101）的表面（101a）。 检测到当光盘的表面与固体浸没透镜的平坦部分之间的距离为零时，偏光状态下的偏振状态的偏振状态的反射光的分量是反射光的偏振状态。 所检测到的光强度与光盘表面和固体浸没透镜之间的距离相关联，以准确地检测光盘和固体浸没透镜之间的微小间隙。

公开(公告)号：US07462855B2

公开(公告)日：2008-12-09

申请号：US11414378

申请日：2006-05-01

申请人： Kimihiro Saito ,  Tsutomu Ishimoto

发明人： Kimihiro Saito ,  Tsutomu Ishimoto

IPC分类号： G11B7/00 ,  G11B13/08

CPC分类号： G11B7/0956 ,  G11B7/0908 ,  G11B7/121 ,  G11B7/1353 ,  G11B7/1387

摘要： An optical recording and reproducing apparatus for recording and/or reproducing an optical recording medium by irradiating light from a light source to the optical recording medium as near-field light from a near-field light irradiating unit includes a light source for emitting light, a first light-receiving unit for receiving and detecting returned light from the optical recording medium, a second light-receiving unit for receiving and detecting returned light from the near-field light irradiating unit, a control unit for detecting a relative skew between the optical recording medium and the near-field light irradiating unit based on a plurality of gap detection signals generated from divided detection signals of the second light-receiving unit and a drive control unit for outputting a drive signal to correct a skew of at least the near-field light irradiating unit to a drive unit in response to a skew detected in the control unit.

摘要翻译： 一种光学记录和再现装置，用于通过将来自光源的光作为近场光照射单元的近场光照射到光学记录介质来记录和/或再现光学记录介质，该光学记录和再现装置包括用于发射光的光源， 用于接收和检测来自光记录介质的返回光的第一光接收单元，用于接收和检测来自近场光照射单元的返回光的第二光接收单元，用于检测光记录之间的相对偏斜的控制单元 介质和近场光照射单元，基于由第二光接收单元的分割检测信号产生的多个间隙检测信号和驱动控制单元，用于输出驱动信号以校正至少近场的偏斜 光照射单元响应于在控制单元中检测到的偏斜而发送到驱动单元。

公开(公告)号：US20050180283A1

公开(公告)日：2005-08-18

申请号：US11039805

申请日：2005-01-24

申请人： Tsutomu Ishimoto ,  Kimihiro Saito

发明人： Tsutomu Ishimoto ,  Kimihiro Saito

IPC分类号： G11B7/08 ,  G11B7/00 ,  G11B7/095 ,  G11B7/135

CPC分类号： G11B7/1387 ,  G11B7/0956 ,  G11B2007/13727

摘要： According to a preferred embodiment of the present invention, in order to provide a tilt control method and optical disc apparatus capable of exerting control to eliminate tilt and capable of carrying out an appropriate gap servo operation, a light gathering element positioned facing a disc recordable with a signal, and capable of gathering light irradiated from a light source as near-field light at a position where a distance to the disc constitutes a first distance is made to come into contact with the disc (step 2), and tilt is controlled with the light gathering element in contact with the disc (steps 3 to 7). As a result, tilting with respect to the disc is adjusted with the SIL in contact with the disc, tilting can be eliminated in a reliable manner, and a gap servo operation can be carried out in an appropriate manner.

摘要翻译： 根据本发明的优选实施例，为了提供能够进行控制以消除倾斜并能够执行适当的间隙伺服操作的倾斜控制方法和光盘装置，定位成面向可记录的盘的光收集元件 信号，并且能够将从光源照射的光收集在与盘的距离构成第一距离的位置处的近场光接触盘（步骤2），并且倾斜被控制 所述聚光元件与所述盘接触（步骤3至7）。 结果，通过SIL与盘接触来调节相对于盘的倾斜，可以以可靠的方式消除倾斜，并且可以以适当的方式执行间隙伺服操作。

公开(公告)号：US07535808B2

公开(公告)日：2009-05-19

申请号：US11039805

申请日：2005-01-24

申请人： Tsutomu Ishimoto ,  Kimihiro Saito

发明人： Tsutomu Ishimoto ,  Kimihiro Saito

IPC分类号： G11B5/58

CPC分类号： G11B7/1387 ,  G11B7/0956 ,  G11B2007/13727

摘要： According to a preferred embodiment of the present invention, in order to provide a tilt control method and optical disc apparatus capable of exerting control to eliminate tilt and capable of carrying out an appropriate gap servo operation, a light gathering element positioned facing a disc recordable with a signal, and capable of gathering light irradiated from a light source as near-field light at a position where a distance to the disc constitutes a first distance is made to come into contact with the disc (step 2), and tilt is controlled with the light gathering element in contact with the disc (steps 3 to 7). As a result, tilting with respect to the disc is adjusted with the SIL in contact with the disc, tilting can be eliminated in a reliable manner, and a gap servo operation can be carried out in an appropriate manner.

摘要翻译： 根据本发明的优选实施例，为了提供能够进行控制以消除倾斜并能够执行适当的间隙伺服操作的倾斜控制方法和光盘装置，定位成面向可记录的盘的光收集元件 信号，并且能够将从光源照射的光收集在与盘的距离构成第一距离的位置处的近场光接触盘（步骤2），并且倾斜被控制 所述聚光元件与所述盘接触（步骤3至7）。 结果，通过SIL与盘接触来调节相对于盘的倾斜，可以以可靠的方式消除倾斜，并且可以以适当的方式执行间隙伺服操作。

公开(公告)号：US20070183298A1

公开(公告)日：2007-08-09

申请号：US11736288

申请日：2007-04-17

申请人： Kimihiro SAITO ,  Tsutomu Ishimoto

发明人： Kimihiro SAITO ,  Tsutomu Ishimoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G02B27/283 ,  G11B7/09 ,  G11B7/1356 ,  G11B7/1381 ,  G11B7/1387 ,  G11B11/10532 ,  G11B11/10576 ,  G11B2007/13727

摘要： An optical pickup device and an optical recording and reproducing apparatus are suitable for use with a near-field optical recording and reproducing system. An optical pickup device comprises an objective lens composed of a solid immersion lens (SIL) the objective lens having a numerical aperture greater than 1, a beam splitter configured to reflect both of a p-polarized light component and an s-polarized light component of reflected lights from an optical recording medium when the optical pickup device irradiates the optical recording medium with a bundle of rays in a predetermined polarized state from a light source through the objective lens, a divider configured to divide incident light into a p-polarized light component and an s-polarized light component reflected by the beam splitter, and a photo-detector configured to separately detect the p-polarized light component and the s-polarized light component divided by the divider.

摘要翻译： 光学拾取装置和光学记录和再现装置适用于近场光学记录和再现系统。 一种光学拾取装置包括由数字孔径大于1的物镜的固体浸没透镜（SIL）构成的物镜，被配置为反射p偏振光分量和S偏振光分量 当光学拾取装置通过物镜从光源以预定偏振状态的光束照射光学记录介质时，来自光学记录介质的反射光;分配器，其将入射光分为p偏振光分量 以及由分束器反射的s偏振光分量，以及光检测器，被配置为分别检测由分频器分压的p偏振光分量和s偏振光分量。

公开(公告)号：US07440383B2

公开(公告)日：2008-10-21

申请号：US11504066

申请日：2006-08-15

申请人： Kimihiro Saito ,  Tsutomu Ishimoto

发明人： Kimihiro Saito ,  Tsutomu Ishimoto

IPC分类号： G11B7/00

CPC分类号： G11B11/10576 ,  B82Y10/00 ,  G11B7/0908 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1374 ,  G11B7/1387 ,  G11B7/139 ,  G11B2007/13727

摘要： An optical pickup device includes an objective lens (2), with a numerical aperture (NA) being not less than 1, having a solid immersion lens (1) which is made up by a spherical portion (1a) and a flat portion (1b) parallel to a surface (101a) of an optical disc (101). The component of the reflected light from the optical disc in the polarized state perpendicular to the polarized state of the reflected light which prevails when the distance between the surface of the optical disc and the flat portion of the solid immersion lens is zero is detected. The so detected light intensity is associated with the distance between the optical disc surface and the solid immersion lens to accurately detect the minute gap between the optical disc and the solid immersion lens.

摘要翻译： 一种光学拾取装置，包括数值孔径（NA）不小于1的物镜（2），具有由球形部分（1a）和平坦部分（1a）构成的固体浸没透镜（1） 1b）平行于光盘（101）的表面（101a）。 检测到当光盘的表面与固体浸没透镜的平坦部分之间的距离为零时，偏光状态下的偏振状态的偏振状态的反射光的分量是反射光的偏振状态。 所检测到的光强度与光盘表面和固体浸没透镜之间的距离相关联，以准确地检测光盘和固体浸没透镜之间的微小间隙。

公开(公告)号：US20050259530A1

公开(公告)日：2005-11-24

申请号：US11118559

申请日：2005-05-02

申请人： Tsutomu Ishimoto ,  Kimihiro Saito

发明人： Tsutomu Ishimoto ,  Kimihiro Saito

IPC分类号： G11B7/00 ,  G11B7/095 ,  G11B7/135

CPC分类号： G11B7/0908 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1387 ,  G11B2007/13727

摘要： An optical pickup device comprising at least a light source, an optical unit for irradiating an optical recording medium with a plurality of lights from this light source, a head unit located in an opposing relation to the optical recording medium and converging a plurality of lights emitted from the light source on a recording surface of the optical recording medium as near field light, a photo-detecting unit for detecting an angle between the head unit and the recording surface of the optical recording medium based on quantities of returned lights from the optical recording medium and a tilt control unit for controlling the tilt driving unit based on an angle detected by the photo-detecting unit so that an angle of the head unit relative to the recording surface is held constant. Then, an optical pickup device, an optical recording and reproducing apparatus and a tilt detection method are able to automatically control a tilt without requiring setting up an external sensor independently of an optical pickup.

摘要翻译： 一种光拾取装置，包括至少一个光源，用于从该光源照射具有多个光的光学记录介质的光学单元，与光学记录介质相对的位置并且会聚多个发光的光 从作为近场光的光记录介质的记录表面上的光源，基于来自光学记录的返回光的量检测光学记录介质的头单元和记录表面之间的角度的光检测单元 介质和倾斜控制单元，用于基于由光检测单元检测到的角度来控制倾斜驱动单元，使得头单元相对于记录表面的角度保持恒定。 然后，光学拾取装置，光学记录和再现装置以及倾斜检测方法能够自动控制倾斜而不需要独立于光学拾取器设置外部传感器。

公开(公告)号：US07613082B2

公开(公告)日：2009-11-03

申请号：US11118559

申请日：2005-05-02

申请人： Tsutomu Ishimoto ,  Kimihiro Saito

发明人： Tsutomu Ishimoto ,  Kimihiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/0908 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1387 ,  G11B2007/13727

摘要： An optical pickup device comprising at least a light source, an optical unit for irradiating an optical recording medium with a plurality of lights from this light source, a head unit located in an opposing relation to the optical recording medium and converging a plurality of lights emitted from the light source on a recording surface of the optical recording medium as near field light, a photo-detecting unit for detecting an angle between the head unit and the recording surface of the optical recording medium based on quantities of returned lights from the optical recording medium and a tilt control unit for controlling the tilt driving unit based on an angle detected by the photo-detecting unit so that an angle of the head unit relative to the recording surface is held constant. Then, an optical pickup device, an optical recording and reproducing apparatus and a tilt detection method are able to automatically control a tilt without requiring setting up an external sensor independently of an optical pickup.

摘要翻译： 一种光拾取装置，包括至少一个光源，用于从该光源照射具有多个光的光学记录介质的光学单元，与光学记录介质相对的位置并且会聚多个发光的光 从作为近场光的光记录介质的记录表面上的光源，基于来自光学记录的返回光的量检测光学记录介质的头单元和记录表面之间的角度的光检测单元 介质和倾斜控制单元，用于基于由光检测单元检测到的角度来控制倾斜驱动单元，使得头单元相对于记录表面的角度保持恒定。 然后，光学拾取装置，光学记录和再现装置以及倾斜检测方法能够自动控制倾斜而不需要独立于光学拾取器设置外部传感器。

公开(公告)号：US07414947B2

公开(公告)日：2008-08-19

申请号：US11736288

申请日：2007-04-17

申请人： Kimihiro Saito ,  Tsutomu Ishimoto

发明人： Kimihiro Saito ,  Tsutomu Ishimoto

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G02B27/283 ,  G11B7/09 ,  G11B7/1356 ,  G11B7/1381 ,  G11B7/1387 ,  G11B11/10532 ,  G11B11/10576 ,  G11B2007/13727

摘要： An optical pickup device and an optical recording and reproducing apparatus are suitable for use with a near-field optical recording and reproducing system. An optical pickup device comprises an objective lens composed of a solid immersion lens (SIL) the objective lens having a numerical aperture greater than 1, a beam splitter configured to reflect both of a p-polarized light component and an s-polarized light component of reflected lights from an optical recording medium when the optical pickup device irradiates the optical recording medium with a bundle of rays in a predetermined polarized state from a light source through the objective lens, a divider configured to divide incident light into a p-polarized light component and an s-polarized light component reflected by the beam splitter, and a photo-detector configured to separately detect the p-polarized light component and the s-polarized light component divided by the divider.

摘要翻译： 光学拾取装置和光学记录和再现装置适用于近场光学记录和再现系统。 一种光学拾取装置包括由数字孔径大于1的物镜的固体浸没透镜（SIL）构成的物镜，被配置为反射p偏振光分量和S偏振光分量 当光学拾取装置通过物镜从光源以预定偏振状态的光束照射光学记录介质时，来自光学记录介质的反射光;分配器，其将入射光分为p偏振光分量 以及由分束器反射的s偏振光分量，以及光检测器，被配置为分别检测由分频器分压的p偏振光分量和s偏振光分量。