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51. 发明授权

US07333405B2 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：US07333405B2
公开(公告)日：2008-02-19
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.
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。

52. 发明授权

US07330419B2 Optical head device and optical information apparatus using the same 有权
标题翻译：光头装置及其使用的光信息装置
公开(公告)号：US07330419B2
公开(公告)日：2008-02-12
申请号：US11443751
申请日：2006-05-31
申请人： Seiji Nishino , Hidenori Wada , Yoshiaki Komma , Sadao Mizuno , Keiichi Matsuzaki
发明人： Seiji Nishino , Hidenori Wada , Yoshiaki Komma , Sadao Mizuno , Keiichi Matsuzaki
IPC分类号： G11B7/00
CPC分类号： G11B7/1398 , G11B7/1353 , G11B7/1367 , G11B7/1372 , G11B7/1378 , G11B7/13922 , G11B7/13925
摘要： An optical head device includes a focusing optical system for focusing a laser beam emitted from a semiconductor laser light source on an optical information medium with an objective lens. A chromatic aberration correction element for correcting chromatic aberration occurring in the objective lens is provided between the semiconductor laser light source and the optical information medium. A light distribution correction element in which the transmittance increases with the distance from the center of the aperture surface of the objective lens is provided so as to correct a reduction of the intensity of the light incident on the aperture surface of the objective lens with the distance from the center of the aperture surface.
摘要翻译：光头装置包括聚焦光学系统，用于将从半导体激光光源发射的激光束聚焦在具有物镜的光信息介质上。在半导体激光光源和光信息介质之间设置用于校正物镜中出现的色像差的色像差校正元件。提供透光率随着距离物镜的孔径表面的中心的距离而增加的光分布校正元件，以便校正入射到物镜的孔表面上的光的强度的降低，距离从孔表面的中心。

53. 发明申请

US20060181985A1 Optical disk device and information recording/reproducing method 有权
公开(公告)号：US20060181985A1
公开(公告)日：2006-08-17
申请号：US11386381
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.

54. 发明申请

US20050237900A1 Optical element, optical head, optical information recording/reproduction device, computer, video recording device, video reproduction device, server, and car navigation system 有权
标题翻译：光学元件，光学头，光学信息记录/再现装置，计算机，视频记录装置，视频再现装置，服务器和汽车导航系统
公开(公告)号：US20050237900A1
公开(公告)日：2005-10-27
申请号：US10511867
申请日：2003-04-18
申请人： Kousei Sano , Yoshiaki Komma , Hidenori Wada , Akihiro Yasuda
发明人： Kousei Sano , Yoshiaki Komma , Hidenori Wada , Akihiro Yasuda
IPC分类号： G11B7/1353 , G02B5/18 , G02B5/32 , G11B7/00 , G11B7/085 , G11B7/135
CPC分类号： G11B7/1275 , G02B5/32 , G11B7/1353 , G11B2007/0006
摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.
摘要翻译：本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22）从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其通过第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达式：描述=“在线公式”end =“lead”？> 380 nm <=（n-1）xd <= 420 nm <？in-line-formula description =“In-line Formulas”end =“tail”？ >，其中n是基底在波长处的折射率 400nm，并且d（nm）是凹槽的每个步骤的深度，并且其中凹槽以深度d和深度2d的两个步骤形成。

55. 发明申请

US20050117497A1 Optical element and optical head device using it and optical information device using this optical head device, and computer, optical disk player car navigation system, optical disk recorder and optical disk server using this optical information device 有权
标题翻译：使用它的光学元件和光学头装置和使用该光学头装置的光学信息装置，以及使用该光学信息装置的计算机，光盘播放器汽车导航系统，光盘记录器和光盘服务器
公开(公告)号：US20050117497A1
公开(公告)日：2005-06-02
申请号：US10504373
申请日：2003-01-30
申请人： Yoshiaki Komma , Sadao Mizuno , Kousei Sano
发明人： Yoshiaki Komma , Sadao Mizuno , Kousei Sano
IPC分类号： G11B7/00 , G11B7/125
CPC分类号： G11B7/1356 , G11B7/1275 , G11B7/1362 , G11B7/1365 , G11B7/1374 , G11B7/1378 , G11B7/1392 , G11B7/1395 , G11B2007/0006
摘要： Providing an objective lens with a large numerical aperture (NA), the present invention records or plays conventional optical disks such as CDs and DVDs using an optical head capable of recording or reproducing high-density optical disks. An optical element (8) is provided between a first and second laser light source and an objective lens (18) for the purpose of converting a wave front of a second optical beam 32. Furthermore, the optical element (8) and the objective lens (18) are fixed to move as a single piece.
摘要翻译：提供具有大数值孔径（NA）的物镜，本发明使用能够记录或再现高密度光盘的光学头记录或播放诸如CD和DVD的常规光盘。为了转换第二光束32的波前，光学元件（8）设置在第一和第二激光光源与物镜（18）之间。此外，光学元件（8）和物镜（18）被固定成单件移动。

56. 发明授权

US06898169B2 Optical pickup head device, information recording/reproducing apparatus, and method for recording information 有权
标题翻译：光学拾取头装置，信息记录/再现装置和用于记录信息的方法
公开(公告)号：US06898169B2
公开(公告)日：2005-05-24
申请号：US10235625
申请日：2002-09-04
申请人： Shin-ichi Kadowaki , Yoshiaki Komma , Kousei Sano
发明人： Shin-ichi Kadowaki , Yoshiaki Komma , Kousei Sano
IPC分类号： G11B7/09 , G11B7/00 , G11B7/0055 , G11B7/135
CPC分类号： G11B7/094 , G11B7/0055 , G11B7/0903 , G11B2007/0013
摘要： An optical pickup head device includes a diffraction grating for generating zero-order diffracted light and at least first-order diffracted light and provides a tracking error signal with a DPP method. The diffraction grating includes grating patterns with a nonuniform period or phase. The size of the first-order diffracted light converged on an optical recording medium is larger in the direction parallel to a tangent to the track than in the direction perpendicular to the tangent. P1/P0>PW2/PW1 is established, where PW1 represents the power that is required to record information on the optical recording medium, PW2 represents the maximum power that allows information recorded on the optical recording medium to be reproduced without being erased, P0 represents the light amount of the zero-order diffracted light converged on the optical recording medium, and P1 represents the light amount of the at least first-order diffracted light converged on the optical recording medium. This configuration makes it possible to detect a tracking error signal with reduced offset, even if a recordable optical recording medium having two information recording planes is used.
摘要翻译：光拾取头装置包括用于产生零级衍射光和至少一级衍射光的衍射光栅，并提供具有DPP方法的跟踪误差信号。衍射光栅包括具有不均匀周期或相位的光栅图案。会聚在光学记录介质上的一级衍射光的尺寸在平行于轨道的切线的方向上大于在垂直于切线的方向上的尺寸。 P 1 / P 0> PW 2 / PW 1，其中PW 1表示在光学记录介质上记录信息所需的功率，PW 2表示允许记录在光学记录介质上的信息被再现的最大功率不被擦除，P 0表示会聚在光记录介质上的零级衍射光的光量，P 1表示会聚在光记录介质上的至少一级衍射光的光量。该配置使得即使使用具有两个信息记录平面的可记录光学记录介质，也可以检测具有减小的偏移的跟踪误差信号。

57. 发明授权

US5912868A Optical head for reproducing data from first and second optical disks 失效
标题翻译：用于从第一和第二光盘再现数据的光学头
公开(公告)号：US5912868A
公开(公告)日：1999-06-15
申请号：US918295
申请日：1997-08-25
申请人： Hideki Hayashi , Sadao Mizuno , Noboru Ito , Kenichiro Urairi , Yoshiaki Komma
发明人： Hideki Hayashi , Sadao Mizuno , Noboru Ito , Kenichiro Urairi , Yoshiaki Komma
IPC分类号： G11B7/14 , G11B7/00 , G11B7/12 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/123 , G11B7/127 , G11B7/1356 , G11B7/1381 , G11B7/13922 , G11B2007/0006 , G11B2007/13727
摘要： An optical head for reproducing data from first and second optical disks which are different from each other in at least one of a base material thickness and an available wavelength, includes: a first light source for emitting a first light beam, the first light beam being used for reproducing data from the first optical disk: an optical system designed to converge the first light beam onto the first optical disk in accordance with a base material thickness and an available wavelength of the first optical disk: and a second light source for emitting a second light beam, the second light beam being used for reproducing data from the second optical disk, wherein an optical path length between the second light source and the optical system is different from an optical path length between the first light source and the optical system, and wherein the optical system converges the second light beam onto the second optical disk.
摘要翻译：一种用于从基材厚度和可用波长中的至少一个中彼此不同的第一和第二光盘再现数据的光学头包括：用于发射第一光束的第一光源，第一光束是用于从第一光盘再现数据：被设计为根据第一光盘的基材厚度和可用波长将第一光束会聚到第一光盘上的光学系统，以及用于发射第一光盘的第二光源第二光束，第二光束用于从第二光盘再现数据，其中第二光源和光学系统之间的光路长度不同于第一光源和光学系统之间的光程长度，并且其中所述光学系统将所述第二光束会聚到所述第二光盘上。

58. 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。

59. 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。

60. 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。

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