公开(公告)号：US07580327B2

公开(公告)日：2009-08-25

申请号：US12002380

申请日：2007-12-17

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US07352664B2

公开(公告)日：2008-04-01

申请号：US11031634

申请日：2005-01-07

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

公开(公告)号：US20060028927A1

公开(公告)日：2006-02-09

申请号：US11238272

申请日：2005-09-29

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US5687153A

公开(公告)日：1997-11-11

申请号：US778508

申请日：1997-01-03

申请人： Yoshiaki Komma ,  Seiji Nishino ,  Shin-ichi Kadowaki ,  Hiroaki Yamamoto ,  Makoto Kato ,  Tetsuo Saimi

发明人： Yoshiaki Komma ,  Seiji Nishino ,  Shin-ichi Kadowaki ,  Hiroaki Yamamoto ,  Makoto Kato ,  Tetsuo Saimi

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

CPC分类号： G11B7/1353 ,  G11B11/10543 ,  G11B7/12 ,  G11B7/123 ,  G11B7/0912

摘要： An optical head device includes: a light source for emitting a light beam; an objective lens for converging the light beam on an information storage medium; a hologram for receiving the light beam reflected by the information storage medium and generating diffracted light from the light beam, the hologram having such a polarization anisotropy that it diffracts light in a second polarization state more strongly than light in a first polarization state which is different from the second polarization state; and a photodetector including a plurality of photodetective sections for receiving a part of the diffracted light and outputting a photocurrent in accordance with the intensity of the part of the diffracted light. The optical head device further include a quarter-wave plate disposed between the objective lens and the hologram for causing the polarization state of the light beam reflected by the information storage medium to be the second polarization state; and the hologram is disposed so that the distance between the hologram and the objective lens is shorter than the distance between the hologram and the photodetector.

摘要翻译： 光头装置包括：用于发射光束的光源; 用于将光束会聚在信息存储介质上的物镜; 用于接收由信息存储介质反射的光束并产生来自光束的衍射光的全息图，该全息图具有这样的偏振各向异性，使得它在比第一偏振态不同的光更强烈地衍射具有第二偏振态的光 从第二极化状态; 以及光电检测器，其包括多个光电检测部分，用于接收一部分衍射光并根据部分衍射光的强度输出光电流。 光头装置还包括设置在物镜和全息图之间的四分之一波片，用于使由信息存储介质反射的光束的偏振状态成为第二偏振状态; 并且全息图被设置成使得全息图和物镜之间的距离比全息图和光电检测器之间的距离短。

公开(公告)号：US20080112303A1

公开(公告)日：2008-05-15

申请号：US12002380

申请日：2007-12-17

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US07158450B2

公开(公告)日：2007-01-02

申请号：US10892066

申请日：2004-07-14

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00 ,  G11B7/135 ,  G11B7/20

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

公开(公告)号：US06987598B2

公开(公告)日：2006-01-17

申请号：US10892009

申请日：2004-07-14

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G02F1/03 ,  G02F1/01 ,  G02F1/00 ,  G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US07170664B2

公开(公告)日：2007-01-30

申请号：US11204270

申请日：2005-08-15

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G02F1/03 ,  G02F1/01 ,  G02F1/00 ,  G02F1/13 ,  G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US20060023607A1

公开(公告)日：2006-02-02

申请号：US11238621

申请日：2005-09-29

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

公开(公告)号：US20050286385A1

公开(公告)日：2005-12-29

申请号：US11203914

申请日：2005-08-15

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G02F1/00 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。