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1. 发明授权

US07564745B2 Optical pickup and optical disk apparatus 失效
标题翻译：光学拾取和光盘设备
公开(公告)号：US07564745B2
公开(公告)日：2009-07-21
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.
摘要翻译：光拾取器包括：第一光学系统，用于将从第一激光光源发射的第一激光光收集到第一光盘上，并将来自第一光盘的反射光引导到感光体; 第二光学系统，用于将从第二激光光源发射的第二激光收集到第二光盘上，并将来自第二光盘的反射光引导到感光体; 第二物镜，用于将第二激光光束收集到第二光盘上并且接收来自第二光盘的反射光，第二物镜可沿通过第二光盘的中心的径向移动;以及第一物镜，用于收集所述第一激光照射到所述第一盘上并接收来自所述第一盘的反射光，所述第一物镜设置为偏离所述径向并相邻于所述第二物镜。

2. 发明授权

US07483357B2 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：US07483357B2
公开(公告)日：2009-01-27
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
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。

3. 发明申请

US20060023609A1 Optical pickup apparatus, optical recording and reproducing apparatus and optical recording and reproducing method 审中-公开
标题翻译：光学拾取装置，光学记录和再现装置以及光学记录和再现方法
公开(公告)号：US20060023609A1
公开(公告)日：2006-02-02
申请号：US11182883
申请日：2005-07-18
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： G11B7/135 , G11B7/00
CPC分类号： G11B7/1398
摘要： An optical pickup apparatus includes a semiconductor laser for emitting laser light with a wavelength of at least from 400 nm to 415 nm and of which plane parallel to an active layer is located substantially in parallel to the recording surface of an optical recording medium and a reflection surface for reflecting laser light emitted from the semiconductor laser in the direction substantially perpendicular to the recording surface of the optical recording medium, the laser light being irradiated on the optical recording medium through an objective lens to record and/or reproduce the optical recording medium, wherein an angle θ formed between the direction of rays of light introduced into the reflection surface from the semiconductor laser and the direction in which recording tracks of the optical recording medium are extended is selected so as to satisfy: 45°≦θ
摘要翻译：一种光学拾取装置包括用于发射波长为至少400nm至415nm的激光的半导体激光器，并且其平行于有源层的平面与光记录介质的记录表面基本平行的反射表面，用于反射从半导体激光器沿与光学记录介质的记录表面大致垂直的方向发射的激光，激光通过物镜照射在光学记录介质上以记录和/或再现光学记录介质，其中选择在从半导体激光器引入到反射表面中的光线的方向与光学记录介质的记录轨道延伸的方向之间形成的角度θ，以便满足：<？在线公式描述 =“在线公式”end =“lead”？> 45°<=θ<90°<？in-line-formula description =“In-line Formulas” 然后，在可以适用于包括具有BD（蓝光光盘）类型布置的光记录介质的光记录介质的光拾取装置和光记录和再现装置中，可能是可能的通过用记录轨道上具有最佳轮廓的束斑照射光来保持令人满意的记录和再现特性。

4. 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.

5. 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。

6. 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。

7. 发明授权

US07675834B2 Optical pickup for three different types of optical discs and recording and/or reproducing apparatus using same 失效
标题翻译：用于三种不同类型的光盘的光学拾取器和使用其的记录和/或再现装置
公开(公告)号：US07675834B2
公开(公告)日：2010-03-09
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： G11B7/135
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 wavelenght, 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的光源单元，用于辐射第二波长的光束的第二辐射单元和用于辐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。

8. 发明申请

US20050270912A1 Optical pickup and apparatus for recording and/or reproducing optical recording medium 审中-公开
标题翻译：用于记录和/或再现光学记录介质的光学拾取器和设备
公开(公告)号：US20050270912A1
公开(公告)日：2005-12-08
申请号：US11119927
申请日：2005-05-03
申请人： Katsutoshi Sato , Hiroaki Yukawa , Kenji Yamamoto , Noriaki Nishi , Midori Kanaya
发明人： Katsutoshi Sato , Hiroaki Yukawa , Kenji Yamamoto , Noriaki Nishi , Midori Kanaya
IPC分类号： G11B7/135 , G11B7/00 , G11B7/125
CPC分类号： G11B7/1275 , G11B7/1359 , G11B7/1367 , G11B2007/0006
摘要： The present invention provides an optical pickup in which light beams of different wavelengths, radiated from plural light sources and reflected back from a recording surface, are condensed in the same area. The optical pickup records and/or reproduces each of a plurality of optical recording mediums having different protective substrate thicknesses, by light beams different in wavelength and in numerical aperture, and includes a light source including a first radiating part for radiating a first light beam having a first wavelength, a second radiating part for radiating a second light beam having a second wavelength, and a third radiating part for radiating a third light beam having a third wavelength, an objective lens for condensing said first to third light beams on each of the optical recording mediums having different protective substrate thicknesses, and a light receiving section for receiving light beams reflected by said optical recording mediums and converting the light beams into electrical signals, there being provided an optical axis combining section on an light path from a light source to said light receiving section for bringing the optical axes of reflected light beams of said first to third light beams into coincidence on a light receiving surface of said light receiving section.
摘要翻译：本发明提供了一种光拾取器，其中从多个光源辐射并从记录表面反射的不同波长的光束在同一区域中被冷凝。光学拾取器通过不同波长和数值孔径的光束记录和/或再现具有不同保护衬底厚度的多个光学记录介质中的每一个，并且包括光源，该光源包括用于辐射第一光束的第一辐射部分，第一波长的第二辐射部分，用于辐射具有第二波长的第二光束的第二辐射部分和用于辐射具有第三波长的第三光束的第三辐射部分，用于将所述第一至第三光束聚光的物镜具有不同保护基板厚度的光记录介质和用于接收由所述光记录介质反射并将光束转换成电信号的光束的光接收部分，在从光源到光源的光路上设置有光轴组合部分所述光接收部分用于使反射光束的光轴旋转所述第一至第三光束在所述光接收部分的光接收表面上重合。

9. 发明申请

US20050276297A1 Optical pickup and optical disk apparatus 审中-公开
标题翻译：光学拾取和光盘设备
公开(公告)号：US20050276297A1
公开(公告)日：2005-12-15
申请号：US11116303
申请日：2005-04-28
申请人： Noriaki Nishi , Yoshiki Okamoto , Katsuhiro Seo , Satoshi Imai , Kenji Yamamoto , Takeshi Yonezawa , Midori Kanaya , Hiroaki Nakagawa
发明人： Noriaki Nishi , Yoshiki Okamoto , Katsuhiro Seo , Satoshi Imai , Kenji Yamamoto , Takeshi Yonezawa , Midori Kanaya , Hiroaki Nakagawa
IPC分类号： G11B7/135 , G11B7/00 , G11B7/125 , H01S5/00
CPC分类号： G11B7/1369 , G11B7/1378 , G11B7/13925 , G11B2007/0006 , G11B2007/13727 , H01S5/005
摘要： An optical pickup includes a laser light source configured to emit laser light, an objective lens configured to focus the laser light emitted from the laser light onto an optical disk, and an image-formation magnification rate varying section for varying an image-formation magnification rate at which the laser light is focused on the optical disk.
摘要翻译：光学拾取器包括被配置为发射激光的激光光源，被配置为将从激光发射的激光聚焦到光盘上的物镜，以及用于改变成像放大率的成像倍率变化部分其中激光聚焦在光盘上。

10. 发明授权

US07173898B2 Optical recording medium driving device 有权
公开(公告)号：US07173898B2
公开(公告)日：2007-02-06
申请号：US10307979
申请日：2002-12-03
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.

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