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31. 发明授权

US07034980B2 Optical element, optical head, optical recording reproducing apparatus and optical recording/ reproducing method 有权
标题翻译：光学元件，光学头，光学记录再现装置和光学记录/再现方法
公开(公告)号：US07034980B2
公开(公告)日：2006-04-25
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： G02F1/03 , 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。

32. 发明申请

US20050135206A1 Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method 有权
标题翻译：光学元件，光学头，光学记录再现装置和光学记录/再现方法
公开(公告)号：US20050135206A1
公开(公告)日：2005-06-23
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： 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。

33. 发明授权

US5737296A Focus and tracking error detection by using plus and minus first order diffracted light 失效
$Focus and tracking error detection by using plus and minus first order diffracted light$
标题翻译：通过使用正负衍射光进行对焦和跟踪误差检测
公开(公告)号：US5737296A
公开(公告)日：1998-04-07
申请号：US589883
申请日：1996-01-23
申请人： Yoshiaki Komma , Ken'ichi Kasazumi , Seiji Nishino , Hiroaki Yamamoto
发明人： Yoshiaki Komma , Ken'ichi Kasazumi , Seiji Nishino , Hiroaki Yamamoto
IPC分类号： G11B7/09 , G11B7/12 , G11B7/13 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0912 , G11B7/123 , G11B7/131 , G11B7/0943
摘要： An optical head device includes a light source for emitting light; an optical system for focusing the light emitted by the light source onto an information medium to form a light spot; a photodetector including a plurality of light detection areas for receiving the light reflected by the information medium and for outputting photocurrents in accordance with the respective amount of the light received; a holographic optical element for diffracting the light reflected by the information medium and for directing the light to the photodetector; and a signal processing circuit section for obtaining a focusing error signal and a tracking error signal for controlling the light spot using the photocurrents. The signal processing circuit section obtains the focusing error signal from the photocurrents which are obtained in accordance with the amount of light of one of .+-.Nth-order diffracted beams, and obtains the tracking error signal from the photocurrents which are obtained in accordance with the amount of light of the other of the .+-.Nth-order diffracted beams.
摘要翻译：光头装置包括用于发光的光源; 用于将由光源发射的光聚焦到信息介质上以形成光点的光学系统; 光检测器，其包括多个光检测区域，用于接收由信息介质反射的光并根据所接收的光的相应量输出光电流; 全息光学元件，用于衍射由信息介质反射的光并将光引导到光电检测器; 以及信号处理电路部分，用于获得聚焦误差信号和用于使用光电流来控制光点的跟踪误差信号。信号处理电路部分从根据+/- N次衍射光束之一的光量获得的光电流获得聚焦误差信号，并从根据光电流获得的光电流获得跟踪误差信号 +/- N次衍射光束中的另一个的光量。

34. 发明授权

US5412631A Optical head apparatus for storing, reading or erasing information, and optical information reproducing method and optical information apparatus for optically reading information stored in an optical memory 失效
标题翻译：用于存储，读取或擦除信息的光学头装置，以及用于光学读取存储在光学存储器中的信息的光学信息再现方法和光学信息装置
公开(公告)号：US5412631A
公开(公告)日：1995-05-02
申请号：US87439
申请日：1993-07-08
申请人： Yoshiaki Komma , Seiji Nishino , Makoto Kato
发明人： Yoshiaki Komma , Seiji Nishino , Makoto Kato
IPC分类号： G11B7/13 , G11B7/135
CPC分类号： G11B7/131 , G11B7/1353
摘要： An optical head apparatus consists of a light beam source, a blazed hologram partitioned into diffraction regions for mainly changing the light beam radiated from the light beam source to zero-order diffraction light and secondarily diffracting the light beam to produce beams of unnecessary light such as N-order diffraction light (N.noteq.0), an information medium for storing information, an objective lens for converging the zero-order diffraction light and the unnecessary light at the information medium, and a six-division photo detector having six detecting sections for detecting intensity of first-order diffraction light produced by diffracting the zero-order diffraction light in the blazed hologram. A hologram pattern of the blazed hologram is formed to function as a lens for the unnecessary light. A focus servo signal is produced according to mutual relation among intensities of the first-order diffraction light detected in the six detecting sections to focus the objective lens on the information medium For the zero-order diffraction light. Therefore, the objective lens is not focused on the information medium for the unnecessary light. Also, the beams of the unnecessary light diffracted in each of the diffraction regions of the blazed hologram are greatly widened because numerical apertures of the diffraction regions are small.
摘要翻译：光头装置由光束源，闪耀的全息图分割成衍射区域，用于主要将从光束源辐射的光束改变为零级衍射光，并且二次衍射光束以产生不必要的光束，例如 N阶衍射光（N NOTEQUAL 0），用于存储信息的信息介质，用于会聚零级衍射光的物镜和信息介质上的不必要光;以及六分光电检测器，具有六个检测部分，用于检测在闪耀的全息图中衍射零级衍射光产生的一级衍射光的强度。闪耀全息图的全息图形成为不必要的光的透镜。根据在六个检测部分中检测到的一级衍射光的强度之间的相互关系产生聚焦伺服信号，以将物镜聚焦在信息介质上用于零级衍射光。因此，物镜不会聚焦在不需要的光的信息介质上。此外，由于衍射区域的数值孔径小，所以在闪耀的全息图的每个衍射区域中衍射的不需要的光束被大大地加宽。

35. 发明授权

US5400311A Hologram and optical apparatus with hologram 失效
标题翻译：全息图和具有全息图的光学设备
公开(公告)号：US5400311A
公开(公告)日：1995-03-21
申请号：US19537
申请日：1993-02-18
申请人： Yoshiaki Komma , Seiji Nishino
发明人： Yoshiaki Komma , Seiji Nishino
IPC分类号： G02B5/18 , G02B5/32 , G03H1/02 , G03H1/22 , G11B7/09 , G11B7/135
CPC分类号： G03H1/02 , G02B5/1876 , G02B5/188 , G02B5/32 , G11B7/1353 , G03H2240/42 , G03H2260/63
摘要： An optical pickup apparatus in which light from a light source is led to an information medium and reflected light from the information medium is led to a hologram to be incident as a +1st order diffraction beam on a photodetector to obtain information signals. The hologram has a stair-like cross-sectional configuration, and a ratio of the width of a step of the stair-like cross-sectional configuration relative to a grating pitch of the hologram is arranged to vary in accordance with a position within a surface of the hologram.
摘要翻译：一种光拾取装置，其中来自光源的光被引导到信息介质并且来自信息介质的反射光被引导到作为+ 1级衍射光束入射的全息图，以在光电检测器上获得信息信号。全息图具有阶梯状横截面构造，并且台阶状横截面构造的阶梯宽度相对于全息图的光栅间距的比率被布置为根据表面内的位置而变化的全息图。

36. 发明授权

US07580327B2 Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method 有权
标题翻译：光学元件，光学头，光学记录再现装置和光学记录/再现方法
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。

37. 发明授权

US07352664B2 Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method 有权
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.

38. 发明授权

US07283450B2 Optical disk device and information recording/reproducing method 有权
标题翻译：光盘装置和信息记录/再现方法
公开(公告)号：US07283450B2
公开(公告)日：2007-10-16
申请号：US11386126
申请日：2006-03-22
申请人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
发明人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/08511 , G11B7/1378 , G11B7/13925 , G11B7/13927 , G11B2007/0013 , G11B2007/13727
摘要： An optical disk device is provided with an optical pickup that includes a convergent optical system having an objective lens for converging a light beam emitted from the laser light source to form a microspot on an optical disk and an aberration correcting optical system for controlling a spherical aberration of the convergent optical system, and performs information recording or reproduction with respect to a multi-layer optical disk having at least a first recording layer and a second recording layer. In the optical disk device, an operation of changing a correction quantity of the spherical aberration from a value adequate for the first recording layer to a predetermined value is started before an operation of moving a focus position of the microspot from the first layer to the second layer is completed. This allows a focus control to be performed stably with respect to the second recording layer in a state in which the spherical aberration correction already has been carried out, thereby preventing the focus control from failing due to an unsuccessful interlayer jump.
摘要翻译：光盘装置具有光学拾取器，该光学拾取器包括会聚光学系统，该会聚光学系统具有用于会聚从激光光源发射的光束以在光盘上形成微点的物镜，以及用于控制球面像差的像差校正光学系统并且对具有至少第一记录层和第二记录层的多层光盘执行信息记录或再现。在光盘装置中，将微球的聚焦位置从第一层移动到第二层的操作之前开始将球面像差的校正量从适合于第一记录层的值改变到预定值的操作层完成。这允许在已经执行球面像差校正的状态下相对于第二记录层稳定地执行聚焦控制，从而防止聚焦控制由于不成功的层间跳跃而失败。

39. 发明申请

US20060158994A1 Optical disk device and information recording/reproducing method 有权
公开(公告)号：US20060158994A1
公开(公告)日：2006-07-20
申请号：US11386376
申请日：2006-03-22
申请人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
发明人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/08511 , G11B7/1378 , G11B7/13925 , G11B7/13927 , G11B2007/0013 , G11B2007/13727
摘要： An optical disk device is provided with an optical pickup that includes a convergent optical system having an objective lens for converging a light beam emitted from the laser light source to form a microspot on an optical disk and an aberration correcting optical system for controlling a spherical aberration of the convergent optical system, and performs information recording or reproduction with respect to a multi-layer optical disk having at least a first recording layer and a second recording layer. In the optical disk device, an operation of changing a correction quantity of the spherical aberration from a value adequate for the first recording layer to a predetermined value is started before an operation of moving a focus position of the microspot from the first layer to the second layer is completed. This allows a focus control to be performed stably with respect to the second recording layer in a state in which the spherical aberration correction already has been carried out, thereby preventing the focus control from failing due to an unsuccessful interlayer jump.

40. 发明申请

US20060158993A1 Optical disk device and information recording/reproducing method 有权
公开(公告)号：US20060158993A1
公开(公告)日：2006-07-20
申请号：US11386126
申请日：2006-03-22
申请人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
发明人： Yoshiaki Komma , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/08511 , G11B7/1378 , G11B7/13925 , G11B7/13927 , G11B2007/0013 , G11B2007/13727
摘要： An optical disk device is provided with an optical pickup that includes a convergent optical system having an objective lens for converging a light beam emitted from the laser light source to form a microspot on an optical disk and an aberration correcting optical system for controlling a spherical aberration of the convergent optical system, and performs information recording or reproduction with respect to a multi-layer optical disk having at least a first recording layer and a second recording layer. In the optical disk device, an operation of changing a correction quantity of the spherical aberration from a value adequate for the first recording layer to a predetermined value is started before an operation of moving a focus position of the microspot from the first layer to the second layer is completed. This allows a focus control to be performed stably with respect to the second recording layer in a state in which the spherical aberration correction already has been carried out, thereby preventing the focus control from failing due to an unsuccessful interlayer jump.

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