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1. 发明授权

US08305866B2 Pickup apparatus, optical recording and reproduction apparatus, and recording and reproduction method 失效
标题翻译：拾取装置，光学记录和再现装置以及记录和再现方法
公开(公告)号：US08305866B2
公开(公告)日：2012-11-06
申请号：US12951967
申请日：2010-11-22
申请人： Norihiro Tanabe , Kimihiro Saito , Takahiro Miura , Yojiro Sumi , Noriaki Nishi
发明人： Norihiro Tanabe , Kimihiro Saito , Takahiro Miura , Yojiro Sumi , Noriaki Nishi
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/0953 , G11B7/1356 , G11B7/1365 , G11B7/13927
摘要： A pickup apparatus includes a light source; a light separator; an object lens that concentrates the light which penetrated the light separator on the optical recording medium; a movable lens; and a light sensing element that receives the reflected light from the optical recording medium separated by the light separator, wherein a coma aberration generated by the transverse shift of the object lens is corrected by a coma aberration which is generated by the deviation of a spherical aberration generated in an optical path from the light source to the object lens and a spherical aberration generated in an optical path from the object lens to a light concentration position on the optical recording medium which are due to the transverse shift.
摘要翻译：拾取装置包括光源; 光分离器将透过光分离器的光集中在光记录介质上的物镜; 可移动镜头; 以及光接收来自由光分离器分离的光记录介质的反射光的光感测元件，其中由透镜的横向偏移产生的彗形像差由通过球面像差的偏差产生的彗差来校正在从光源到物镜的光路中产生的球面像差，以及由于横向偏移而从物镜到光记录介质上的光聚集位置的光路中产生的球面像差。

2. 发明授权

US08259553B2 Optical pickup and optical disc device 有权
标题翻译：光学拾取和光盘设备
公开(公告)号：US08259553B2
公开(公告)日：2012-09-04
申请号：US12703294
申请日：2010-02-10
申请人： Fumiaki Nakano , Nobuhiko Ando , Noriaki Nishi , Takashi Nakao , Hiroaki Nakagawa , Yutaka Tentaku
发明人： Fumiaki Nakano , Nobuhiko Ando , Noriaki Nishi , Takashi Nakao , Hiroaki Nakagawa , Yutaka Tentaku
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/131 , G11B2007/0013
摘要： An optical pickup includes: a light source outputting a light beam; an objective lens collecting the light beam on a target recording layer as a target of plural recording layers provided in an optical disc; a lens moving unit moving the objective lens in a tracking direction nearly orthogonal to track grooves helically or coaxially formed in the target recording layer; a collective lens collecting a reflected light beam formed when the light beam is reflected by the optical disc; a diffraction optical element diffracting part of the reflected first-order light beam in predetermined directions as first, second, third and fourth beams; and a photodetector receiving the first and second beams using first and second light receiving areas, and generating light reception signals, and receiving the third and fourth beams using third and fourth light receiving areas, and generates light reception signals.
摘要翻译：光拾取器包括：输出光束的光源; 将目标记录层上的光束收集成设置在光盘中的多个记录层的目标物的物镜; 透镜移动单元，沿跟踪方向移动所述物镜，所述跟踪方向与所述目标记录层中螺旋或同轴地形成的轨道槽几乎正交; 收集当光束被光盘反射时形成的反射光束的集体透镜; 衍射光学元件将预定方向的反射一次光束的一部分衍射为第一，第二，第三和第四光束; 以及光电检测器，其使用第一和第二光接收区域接收第一和第二光束，并且产生光接收信号，并且使用第三和第四光接收区域接收第三和第四光束，并且产生光接收信号。

3. 发明授权

US07848211B2 Objective lens apparatus, optical pickup apparatus, and optical disc driving apparatus 失效
标题翻译：物镜装置，光学拾取装置和光盘驱动装置
公开(公告)号：US07848211B2
公开(公告)日：2010-12-07
申请号：US11790543
申请日：2007-04-26
申请人： Kenji Yamamoto , Noriaki Nishi
发明人： Kenji Yamamoto , Noriaki Nishi
IPC分类号： G11B7/135
CPC分类号： G11B7/0935 , G11B7/1374 , G11B2007/0006
摘要： An objective lens apparatus is disclosed. The apparatus includes: a first objective lens with a first numerical aperture, which is capable of focusing a laser light on a first optical record medium with a first cover layer of a first thickness; a second objective lens with a second numerical aperture smaller than the first numerical aperture, which is capable of focusing the laser light on a second optical record medium with a second cover layer of a second thickness larger than the first thickness; a third objective lens with a third numerical aperture smaller than the second numerical aperture, which is capable of focusing the laser light on a third optical record medium with a third cover layer of a third thickness larger than the second thickness; and a lens holder which holds the first objective lens, the second objective lens, and the third objective lens.
摘要翻译：公开了一种物镜设备。该装置包括：具有第一数值孔径的第一物镜，其能够将激光聚焦在具有第一厚度的第一覆盖层的第一光学记录介质上; 具有小于第一数值孔径的第二数值孔径的第二物镜，其能够将激光聚焦在具有大于第一厚度的第二厚度的第二覆盖层的第二光学记录介质上; 具有小于第二数值孔径的第三数值孔径的第三物镜，其能够将激光聚焦在具有大于第二厚度的第三厚度的第三覆盖层的第三光学记录介质上; 以及保持第一物镜，第二物镜和第三物镜的透镜保持器。

4. 发明申请

US20070171786A1 Optical pickup apparatus and optical disk apparatus 审中-公开
标题翻译：光拾取装置和光盘装置
公开(公告)号：US20070171786A1
公开(公告)日：2007-07-26
申请号：US11643411
申请日：2006-12-21
申请人： Takashi Kobayashi , Noriaki Nishi
发明人： Takashi Kobayashi , Noriaki Nishi
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/1353 , G11B7/1359 , G11B7/1362 , G11B7/1381 , G11B7/1395
摘要： An optical pickup includes: a light source for an optical disk; a beam splitter for splitting into a main and sub beams; and a photo-detector for sensing the main and sub beams reflected from the disk and outputting a signal corresponding to the sensed beams; wherein the splitter generates two sub beams by deflecting a portion of the light traveling toward an outside of an aperture of an objective lens so as to provide passage through an inside of the aperture of the lens, while generating the main beam based on the other portion of the beam from the source; and the main beam from the disk contains an area involving overlap of zero- and ±first-order light yielded by a track structure of the disk, while the two sub beams contain no area involving the overlap of the zero- and the ±first-order light yielded by the track structure.
摘要翻译：光拾取器包括：光盘用光源; 用于分裂成主光束和子光束的分束器; 以及光检测器，用于感测从光盘反射的主光束和副光束，并输出对应于感测光束的信号; 其中所述分离器通过使朝向物镜的孔的外侧行进的光的一部分偏转而产生两个子光束，以便提供穿过透镜的孔的内部的通过，同时基于另一部分产生主光束的光源; 并且来自盘的主光束包含涉及由盘的轨道结构产生的零和±一阶光的重叠的区域，而两个子光束不包含涉及零和±第一阶光的重叠的区域，由轨道结构产生的顺序光。

5. 发明申请

US20070164241A1 OPTICAL PICKUP AND OPTICAL INFORMATION APPARATUS 失效
标题翻译：光学拾取和光学信息设备
公开(公告)号：US20070164241A1
公开(公告)日：2007-07-19
申请号：US11619841
申请日：2007-01-04
申请人： Fumiaki Nakano , Noriaki Nishi
发明人： Fumiaki Nakano , Noriaki Nishi
IPC分类号： G01N21/86 , G01V8/00
CPC分类号： G11B7/1367 , G11B7/0906 , G11B7/131 , G11B7/1353 , G11B7/1369 , G11B7/1381
摘要： An optical pickup includes a detector, a plurality of light guiding units, and a switching controller. The detector detects, using a plurality of detection areas, a reflected light beam that is emitted from a predetermined light source and is reflected off an optical recording medium. Each of the light guiding units has a specific light guide pattern and inputs a predetermined part of the reflected light beam to a predetermined detection area in accordance with the light guide pattern. The switching controller switches and selects the light guiding unit that acts on the reflected light beam from among the plurality of light guiding units according to a predetermined switching condition.
摘要翻译：光拾取器包括检测器，多个导光单元和开关控制器。检测器使用多个检测区域检测从预定光源发射并从光记录介质反射的反射光束。每个导光单元具有特定的光导图案，并且根据导光图案将预定部分的反射光束输入到预定的检测区域。切换控制器根据预定的切换条件切换并选择作用于多个导光单元中的反射光束的导光单元。

6. 发明授权

US07196989B2 Optical recording medium driving device 有权
标题翻译：光记录介质驱动装置
公开(公告)号：US07196989B2
公开(公告)日：2007-03-27
申请号：US11418254
申请日：2006-05-05
申请人： Noriaki Nishi , Kenji Yamamoto
发明人： Noriaki Nishi , Kenji Yamamoto
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/0079 , G11B7/1263 , G11B7/1356 , G11B7/1365 , G11B7/1369 , G11B7/1395 , G11B19/12 , G11B2007/0006 , G11B2007/0013 , G11B2007/13727
摘要： A method and an apparatus for driving an optical recording medium for recording and/or reproducing various information for the optical recording medium, in which the output power ratio of the light source may be reduced for recording and reproduction, for optical recording media of different sorts, or for respective recording surfaces of a multi-layered optical recording medium, so that optimum characteristics may be realized even with use of an easy-to-fabricate light source or a light source with a smaller light output rating. The intensity of a light beam emitted on an optical recording medium 102 by an optical head 104 is controlled by optical coupling efficiency varying elements 214, 215 depending on the sort of the optical recording medium 102, recording surfaces of a multi-layered optical recording medium, recording surfaces in the multi-layered optical recording medium or on the operating modes, in such a manner that the intensity of the light beam emitted on the optical recording medium 102 may be significantly varied without drastically increasing the output power ratio on the side light source 212.
摘要翻译：一种用于记录和/或再现用于记录和/或再现光记录介质的各种信息的光学记录介质的方法和装置，其中光源的输出功率比可以减少用于记录和再现，用于不同种类的光学记录介质或者对于多层光记录介质的各个记录表面，即使使用易于制造的光源或具有较小的光输出等级的光源，也可以实现最佳特性。通过光学头104在光学记录介质102上发射的光束的强度由光学耦合效率变化元件214,215控制，这取决于光学记录介质102的种类，多层光学记录介质的记录表面在多层光学记录介质中或在操作模式下记录表面，使得在光学记录介质102上发射的光束的强度可以显着变化，而不会显着增加侧光上的输出功率比来源212。

7. 发明申请

US20060262700A1 Optical head, light-emitting/receiving device, and apparatus for recording/reproducing optical recording/recorded medium 失效
公开(公告)号：US20060262700A1
公开(公告)日：2006-11-23
申请号：US11494565
申请日：2006-07-28
申请人： Noriaki Nishi
发明人： Noriaki Nishi
IPC分类号： G11B7/00
CPC分类号： G11B11/10543 , G11B7/00718 , G11B7/0912 , G11B7/123 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/1356 , G11B7/1359 , G11B7/1369 , G11B7/1378 , G11B7/1381 , G11B7/13927 , G11B7/1398 , G11B11/10576
摘要： An optical head in which focussing error is detected by a spot size method used for recording and/or reproducing information signals on or from an optical disc. The optical head includes a unit for correcting the spot shape between the objective lens and a photodetector device. The spot shape correcting unit corrects part or all of light spots formed on the photodetector by a light beam reflected back by the optical disc so that the spot diameter in a direction traversing a track on the optical disc will be larger than the spot diameter along the track.

8. 发明申请

US20060077784A1 Optical pickup and optical disk apparatus 失效
公开(公告)号：US20060077784A1
公开(公告)日：2006-04-13
申请号：US11230675
申请日：2005-09-21
申请人： Midori Kanaya , Katsutoshi Sato , Kenji Yamamoto , Noriaki Nishi , Noriyuki Mori
发明人： Midori Kanaya , Katsutoshi Sato , Kenji Yamamoto , Noriaki Nishi , Noriyuki Mori
IPC分类号： G11B7/00
CPC分类号： G11B7/1275 , G11B7/1395 , G11B2007/0006
摘要： An optical pickup includes a first optical system for collecting first laser light emitted from a first laser light source onto a first disk, and guiding reflected light from the first disk to a photoreceptor; a second optical system for collecting second laser light emitted from a second laser light source onto a second disk, and guiding reflected light from the second disk to a photoreceptor; a second objective lens for collecting the second laser light onto the second disk and receiving the reflected light from the second disk, the second objective lens being movable in a radial direction passing through the center of the second disk, and a first objective lens for collecting the first laser light onto the first disk and receiving the reflected light from the first disk, the first objective lens being disposed offset from the radial direction and adjacently to the second objective lens.

9. 发明申请

US20050270925A1 Optical pickup and recording and/or reproducing apparatus using same 失效
标题翻译：光拾取器及使用其的记录和/或再现装置
公开(公告)号：US20050270925A1
公开(公告)日：2005-12-08
申请号：US11113037
申请日：2005-04-25
申请人： Kenji Yamamoto , Katsutoshi Sato , Noriaki Nishi , Midori Kanaya , Shinya Makita
发明人： Kenji Yamamoto , Katsutoshi Sato , Noriaki Nishi , Midori Kanaya , Shinya Makita
IPC分类号： G11B7/00 , G11B7/12 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1376 , G11B7/13927 , G11B2007/0006
摘要： An optical pickup including a light source unit having a first radiating unit for radiating a light beam of a first wavelength, a second radiating unit for radiating a light beam of a second wavelength and a third radiating unit for radiating a light beam of a third wavelength, a collimator lens having different focal lengths dependent on the first to third wavelengths, and an objective lens for condensing light beams, radiated from the first to third radiating units, on an information recording surface of an optical disc, and a recording and/or reproducing apparatus employing the optical pickup, are disclosed. The optical pickup and the recording and/or reproducing apparatus are used for recording and/or reproducing the information for plural sorts of the information recording medium of different formats. Certain components of the optical pickup are used in common for the different light beams to reduce the size of the device as well as to correct the spherical aberration.
摘要翻译：一种光学拾取器，包括具有用于照射第一波长的光束的第一辐射单元和第二波长的光束的第二辐射单元的光源单元和用于照射第三波长的光束的第三辐射单元，具有取决于第一至第三波长的不同焦距的准直透镜，以及用于将从第一至第三辐射单元辐射的光束聚光在光盘的信息记录表面上的物镜，以及记录和/或公开了采用光学拾取器的再现装置。光拾取器和记录和/或再现装置用于记录和/或再现用于多种不同格式的信息记录介质的信息。对于不同的光束，光拾取器的某些部件共同使用以减小装置的尺寸以及校正球面像差。

10. 发明申请

US20050265207A1 Optical pickup and optical disc apparatus 失效
标题翻译：光拾取和光盘装置
公开(公告)号：US20050265207A1
公开(公告)日：2005-12-01
申请号：US11118349
申请日：2005-05-02
申请人： Kenji Yamamoto , Katsutoshi Sato , Noriaki Nishi , Midori Kanaya
发明人： Kenji Yamamoto , Katsutoshi Sato , Noriaki Nishi , Midori Kanaya
IPC分类号： G11B7/135 , G02B26/08 , G02B27/28 , G11B7/00
CPC分类号： G11B7/139 , G02B27/283 , G11B7/1275 , G11B7/1378 , G11B7/1395 , G11B2007/0006
摘要： An optical pickup housing an optical system including a collimator lens for converting laser light incident on the collimator lens into an approximately parallel light beam, and an objective lens for receiving the laser light converted into the approximately parallel light beam and focusing the laser light onto a recording medium, the optical pickup having a light source configured to emit a plurality of laser beams of different wavelengths; a magnification conversion element arranged between the collimator lens and the objective lens; a bypass optical path configured to bypass the magnification conversion element; and optical path selection unit configured to select, according to a wavelength of each of the plurality of laser beams, whether each of the plurality of laser beams is to pass through an optical path passing through the magnification conversion element or through the bypass optical path.
摘要翻译：一种光学拾取器，其容纳包括用于将入射在准直透镜上的激光转换成大致平行光束的准直透镜的光学系统，以及用于接收被转换成大致平行光束的激光并将激光聚焦到记录介质，所述光学拾取器具有被配置为发射多个不同波长的激光束的光源; 放大转换元件，布置在准直透镜和物镜之间; 旁路光路，被配置为绕过所述放大率转换元件; 以及光路选择单元，被配置为根据所述多个激光束中的每一个的波长来选择所述多个激光束中的每一个是否穿过通过所述放大率转换元件的光路或通过所述旁路光路。

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