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11. 发明授权

US5757733A Optical disc system having an objective lens with a numerical aperture related to the thickness of the protective layer 失效
标题翻译：具有与保护层的厚度相关的具有数值孔径的物镜的光盘系统
公开(公告)号：US5757733A
公开(公告)日：1998-05-26
申请号：US613035
申请日：1996-03-08
申请人： Tetsu Watanabe , Yoshio Aoki
发明人： Tetsu Watanabe , Yoshio Aoki
IPC分类号： G11B7/0037 , G11B7/007 , G11B7/135 , G11B7/24 , G11B11/105 , G11B11/00
CPC分类号： G11B7/1372 , G11B11/10532 , G11B11/10534 , G11B11/10541 , G11B11/10543 , G11B11/10554 , G11B11/10558 , G11B11/10584 , G11B7/0037 , G11B7/00718 , G11B7/1374 , G11B7/24038 , G11B7/24059 , G11B2007/13727
摘要： A magneto-optical disc system includes a magneto-optical disc 40 with a light-transmitting cover layer 41, an objective lens 2 for bundling or focusing a laser beam onto a magnetic recording layer 43 of the magneto-optical disc 40 for recording information thereon and/or reproducing information therefrom, and a magnetic field generating unit 9 having a coil pattern 7 arranged on an optical glass element 8. The thickness t.sub.2 of the light-transmitting cover layer 41 falls within the range of 0.6 to 0.1 mm, and the numerical aperture (NA) of the objective lens 2 falls within the range of 0.55 to 0.70.
摘要翻译：磁光盘系统包括具有透光覆盖层41的磁光盘40，用于将激光束聚集或聚焦到磁光盘40的磁记录层43上以便在其上记录信息的物镜2 和/或再现信息，以及具有布置在光学玻璃元件8上的线圈图案7的磁场产生单元9.透光覆盖层41的厚度t2在0.6至0.1mm的范围内，并且物镜2的数值孔径（NA）在0.55〜0.70的范围内。

12. 发明授权

US5617378A Magneto-optical disc system having an objective lens with a numerical aperture related to the thickness of the protective layer 失效
标题翻译：具有具有与保护层的厚度相关的数值孔径的物镜的磁光盘系统
公开(公告)号：US5617378A
公开(公告)日：1997-04-01
申请号：US499347
申请日：1995-07-07
申请人： Tetsu Watanabe , Yoshio Aoki
发明人： Tetsu Watanabe , Yoshio Aoki
IPC分类号： G11B7/007 , G11B7/135 , G11B7/24 , G11B11/105 , G11B11/00
CPC分类号： G11B7/1372 , G11B11/10534 , G11B11/10543 , G11B11/10554 , G11B11/10558 , G11B7/00718 , G11B7/1374 , G11B7/24056 , G11B11/10584
摘要： An magneto-optical disc system includes an magneto-optical disc with a light-transmitting cover and an objective lens for bundling or focusing a laser beam on a recording layer of the magneto-optical disc in order to perform recording and/or reproduction. The thickness t.sub.2 of the light-transmitting cover is set to fall within the range of 0.6 to 0.1 mm, the numerical aperture (NA) of the objective lens is set to fall within the range of 0.55 to 0.70 and the wavelength of the light beam is selected to be between 635 and 680 nanometers.
摘要翻译：磁光盘系统包括具有透光盖的磁光盘和用于将激光束聚集或聚焦在磁光盘的记录层上以便执行记录和/或再现的物镜。透光罩的厚度t2设定在0.6〜0.1mm的范围内，物镜的数值孔径（NA）设定在0.55〜0.70的范围内，光束的波长被选择在635和680纳米之间。

13. 发明授权

US5610880A Optical disc system and optical disk therefor 失效
标题翻译：光盘系统及其光盘
公开(公告)号：US5610880A
公开(公告)日：1997-03-11
申请号：US683557
申请日：1996-07-17
申请人： Tetsu Watanabe , Yoshio Aoki
发明人： Tetsu Watanabe , Yoshio Aoki
IPC分类号： G11B7/0037 , G11B7/007 , G11B7/135 , G11B7/24 , G11B11/105 , G11B17/00
CPC分类号： G11B7/0037 , G11B11/10532 , G11B11/10534 , G11B11/10541 , G11B11/10543 , G11B11/10554 , G11B11/10558 , G11B11/10584 , G11B7/00718 , G11B7/1372 , G11B7/1374 , G11B7/24038 , G11B7/24059 , G11B2007/13727
摘要： An optical disc system using an optical disc with a light-transmitting cover and an objective lens for bundling or focusing a laser beam on a recording layer of the optical disc in order to perform recording and/or reproduction. The thickness t.sub.2 of the light-transmitting cover is set to fall within the range of 0.6 to 0.1 mm, the numerical aperture (NA) of the objective lens is set to fall within the range of 0.55 to 0.70 and the wavelength of the light beam is selected to be between 635 and 650 nanometers.
摘要翻译：一种使用具有透光罩的光盘和用于将激光束聚集或聚焦在光盘的记录层上以便执行记录和/或再现的光盘的光盘系统。透光罩的厚度t2设定在0.6〜0.1mm的范围内，物镜的数值孔径（NA）设定在0.55〜0.70的范围内，光束的波长被选择在635和650纳米之间。

14. 发明授权

US5587990A Optical disc system and optical disc therefor 失效
标题翻译：光盘系统及其光盘
公开(公告)号：US5587990A
公开(公告)日：1996-12-24
申请号：US499331
申请日：1995-07-07
申请人： Tetsu Watanabe , Yoshio Aoki
发明人： Tetsu Watanabe , Yoshio Aoki
IPC分类号： G11B7/0037 , G11B7/007 , G11B7/135 , G11B7/24 , G11B11/105
CPC分类号： G11B7/0037 , G11B11/10532 , G11B11/10534 , G11B11/10541 , G11B11/10543 , G11B11/10554 , G11B11/10558 , G11B11/10584 , G11B7/00718 , G11B7/1372 , G11B7/1374 , G11B7/24038 , G11B7/24059 , G11B2007/13727
摘要： An optical disc system using an optical disc with a light-transmitting cover and an objective lens for bundling or focusing a laser beam on a recording layer of the optical disc in order to perform recording and/or reproduction. The thickness t.sub.2 of the light-transmitting cover is set to fall within the range of 0.6 to 0.1 mm, the numerical aperture (NA) of the objective lens is set to fall within the range of 0.55 to 0.70 and the wavelength of the light beam is selected to be between 635 and 650 nanometers.
摘要翻译：一种使用具有透光罩的光盘和用于将激光束聚集或聚焦在光盘的记录层上以便执行记录和/或再现的光盘的光盘系统。透光罩的厚度t2设定在0.6〜0.1mm的范围内，物镜的数值孔径（NA）设定在0.55〜0.70的范围内，光束的波长被选择在635和650纳米之间。

15. 发明授权

US5533001A Magneto-optical disk system with specified thickness for protective layer relative to the numerical aperture of the objective lens 失效
公开(公告)号：US5533001A
公开(公告)日：1996-07-02
申请号：US383351
申请日：1995-02-03
申请人： Tetsu Watanabe , Yoshio Aoki
发明人： Tetsu Watanabe , Yoshio Aoki
IPC分类号： G11B7/0037 , G11B7/007 , G11B7/135 , G11B7/24 , G11B11/105 , G11B11/00
CPC分类号： G11B7/1372 , G11B11/10532 , G11B11/10534 , G11B11/10541 , G11B11/10543 , G11B11/10554 , G11B11/10558 , G11B11/10584 , G11B7/0037 , G11B7/00718 , G11B7/1374 , G11B7/24038 , G11B7/24059 , G11B2007/13727
摘要： A magneto-optical disc system includes a magneto-optical disc with a light-transmitting cover, an objective lens for bundling or focusing a laser beam on a magnetic recording layer of the magneto-optical disc in order to perform recording and/or reproduction, and a magnetic field generating unit obtained by forming a coil pattern in an optical glass. In the above system, the thickness t.sub.2 of the light-transmitting cover is set to fall within the range of 0.6 to 0.1 mm, and the numerical aperture (NA) of the objective lens is set to fall within the range of 0.55 to 0.70, so as to obtain high-density recording and/or reproduction by permitting the lens to be quite close to the actual recording layer.

16. 发明授权

US5287334A Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus 失效
标题翻译：磁光拾取装置和磁光记录/再现装置
公开(公告)号：US5287334A
公开(公告)日：1994-02-15
申请号：US808077
申请日：1991-12-11
申请人： Kietsu Iwabuchi , Koji Sasaki , Tetsu Watanabe , Tamotsu Yamagami , Yoshio Aoki
发明人： Kietsu Iwabuchi , Koji Sasaki , Tetsu Watanabe , Tamotsu Yamagami , Yoshio Aoki
IPC分类号： G11B11/105 , G11B5/127
CPC分类号： G11B11/10584 , G11B11/10532 , G11B11/10536 , G11B11/10554
摘要： A magneto-optical pickup apparatus includes an objective lens for focusing a laser beam emitted from a laser device onto a magneto-optical recording medium, driving coils, on which the objective lens is mounted, for driving the objective lens in focusing and tracking directions, and a plate arranged at an end portion of the driving coils between the objective lens and the magneto-optical recording medium. The plate is formed with a coil pattern for generating a magnetic field to be applied to the magneto-optical recording medium, and can allow a laser beam transmitted through the objective lens to pass therethrough.
摘要翻译：磁光拾取装置包括用于将从激光装置发射的激光束聚焦到磁光记录介质上的物镜，其上安装有物镜的驱动线圈，用于在聚焦和跟踪方向上驱动物镜，以及布置在物镜和磁光记录介质之间的驱动线圈的端部处的板。板形成有用于产生要施加到磁光记录介质的磁场的线圈图案，并且可以允许透过物镜的激光束通过。

17. 发明授权

US07420892B2 Optical head device, and optical recording/reproducing device 失效
标题翻译：光头装置和光记录/再现装置
公开(公告)号：US07420892B2
公开(公告)日：2008-09-02
申请号：US10501159
申请日：2003-02-19
申请人： Tetsu Watanabe , Takakiyo Kanazawa , Kenji Yamamoto , Masahiro Yamada , Tadashi Taniguchi
发明人： Tetsu Watanabe , Takakiyo Kanazawa , Kenji Yamamoto , Masahiro Yamada , Tadashi Taniguchi
IPC分类号： G11B7/00
CPC分类号： G11B7/0901 , G11B7/0908 , G11B7/0937 , G11B7/123 , G11B7/1376 , G11B7/1387 , G11B11/10543 , G11B11/10554 , G11B11/10569 , G11B11/10576 , G11B11/1058 , G11B2007/13727
摘要： A compact and light flying head type magneto-optical head apparatus is provided. The magneto-optical head apparatus (1) of the present invention comprises a suspension (12) whose one end is fixed to a lower surface of an arm (11), a slider (13) fixed to a free end of the suspension (12), and a magnetic modulation coil (14) and an object lens (15) mounted on the slider (13). The slider (13) mounted with the magnetic modulation coil (14) and the object lens (15) floats due to a wind pressure caused by rotation of an MO disk (3). The magneto-optical head apparatus (1) is further provided with a collimeter lens (21) between a light source (71) and the object lens (15) in a hybrid optical apparatus (7) provided to the arm (11), and a position of the collimeter lens (21) can be adjusted vertically along an optical axis O-O by a collimeter actuator (23), so that optical conditions between the light source (71) and the object lens (15) are improved.
摘要翻译：提供了一种紧凑且轻型的飞头型磁光头装置。本发明的磁光头装置（1）包括悬臂（12），其一端固定在臂（11）的下表面，滑块（13）固定在悬架（12）的自由端）和安装在滑块（13）上的磁调制线圈（14）和物镜（15）。安装有磁调制线圈（14）和物镜（15）的滑块（13）由于由MO盘（3）的旋转引起的风压而浮起。磁光头装置（1）在设置在臂（11）上的混合光学装置（7）中还在光源（71）和物镜（15）之间设置有碰撞透镜（21），以及可以通过碰撞促动器（23）沿着光轴O0垂直地调节碰撞透镜（21）的位置，从而提高光源（71）和物镜（15）之间的光学条件。

18. 发明申请

US20080080039A1 Optical near-field generating device, optical near-field generating method and information recording and reproducing apparatus 有权
标题翻译：光学近场产生装置，光学近场产生方法和信息记录和再现装置
公开(公告)号：US20080080039A1
公开(公告)日：2008-04-03
申请号：US11902725
申请日：2007-09-25
申请人： Kazuhiro Hongo , Tetsu Watanabe
发明人： Kazuhiro Hongo , Tetsu Watanabe
IPC分类号： G02F1/00
CPC分类号： G11B7/1387 , G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： An optical near-field generating device is provided. The optical near-field generating device includes: a light source; a light transmissive substrate; and a conductive scatterer irradiated with light from the light source to generate an optical near-field. The scatterer is formed across planes with different heights on the light transmissive substrate and includes a first area formed on a surface closest to an object to which the optical near-field is applied and a second area formed on a surface distant from the object as compared with the first area. The optical near-field is generated from the first area of the scatterer toward the object.
摘要翻译：提供了一种光学近场产生装置。光学近场产生装置包括：光源; 透光基板; 以及用来自光源的光照射的导电散射体产生光学近场。散射体形成在透光基板上的不同高度的平面上，并且包括形成在最靠近被施加光学近场的物体的表面上的第一区域和形成在远离物体的表面上的第二区域与第一个区域。从散射体的第一区域向物体产生光学近场。

19. 发明申请

US20050146800A1 Optical pickup device and optical disc apparatus 失效
标题翻译：光拾取装置和光盘装置
公开(公告)号：US20050146800A1
公开(公告)日：2005-07-07
申请号：US11072504
申请日：2005-03-07
申请人： Masahiro Yamada , Takahiro Miura , Takakiyo Kanazawa , Tetsu Watanabe , Sunao Aoki
发明人： Masahiro Yamada , Takahiro Miura , Takakiyo Kanazawa , Tetsu Watanabe , Sunao Aoki
IPC分类号： G02B5/00 , G02B3/00 , G02B13/00 , G11B7/135 , G02B9/08 , G02B9/00
CPC分类号： G11B7/1374 , G11B7/1378 , G11B7/1387 , G11B7/139
摘要： An optical pickup device and optical disc apparatus of the present invention include an optical element that prevents the incidence of light on unnecessary portions of the optical element so that stray light and noise are eliminated. The optical element include at least one substrate having a plurality of lens substrates that have embedded lenses made of a material with a higher refractive index than the at least one substrate. A shielding means limits the optical path so that incident light propagates only within a prescribed optical path formed on a light incidence-side or emission-side surface of one of the lens substrates. In addition, the shielding means is formed from an absorptive or reflective film placed in a region outside the prescribed optical path or through machining the region outside the prescribed optical path.
摘要翻译：本发明的光学拾取装置和光盘装置包括防止光学元件的不必要部分发生光的光学元件，从而消除杂散光和噪声。光学元件包括具有多个透镜基板的至少一个基板，该多个透镜基板具有由比至少一个基板更高的折射率的材料制成的嵌入式透镜。屏蔽装置限制光路，使得入射光仅在形成在一个透镜基板的光入射侧或发射侧表面上的规定光路内传播。此外，屏蔽装置由放置在规定光路外部的区域的吸收或反射膜形成，或者通过加工规定光路外部的区域。

20. 发明授权

US06704275B2 Optical recording medium and disc cartridge having 2 GB capacity 失效
标题翻译：光记录介质和光盘盒
公开(公告)号：US06704275B2
公开(公告)日：2004-03-09
申请号：US10051775
申请日：2001-10-29
申请人： Naohiro Netsu , Yoshitaka Aoki , Tetsu Watanabe , Kazuhiko Fujiie , Yasuaki Maeda , Takuya Kaeriyama
发明人： Naohiro Netsu , Yoshitaka Aoki , Tetsu Watanabe , Kazuhiko Fujiie , Yasuaki Maeda , Takuya Kaeriyama
IPC分类号： G11B2303
CPC分类号： B29C69/001 , B29C2793/0009 , B29L2017/005 , G11B7/007 , G11B7/24 , G11B7/24085 , G11B11/10582 , G11B23/0035 , G11B23/0308
摘要： An optical recording medium is provided which has a substrate and a signal recording layer provided on the substrate and in which an information signal is recorded in the form of microscopic pits. A light beam is focused on the signal recording layer and some change of the light beam carried by a return light from the signal recording layer is detected to read the information signal recorded on the signal recording layer. The optical recording medium has a diameter of 65 mm or less and thickness of 0.4 to 0.7 mm. An information signal recording area extends outwardly from a radial position of 12.5 mm or less from the center of the medium. The ratio in area between the information signal recording area and non-signal recording area is 3.4 or more. The storage capacity of this medium is 2 gigabytes or more. The optical recording medium has formed at the center thereof a center hole around which an annular table-abutment convexing to one side of the medium is formed. A magnetic-clamping hub is installed in the center hole and thus the medium is magnetically clamped to a rotation driving mechanism of an optical recording and/or reproducing apparatus. The compactness and high density of recording of the optical recording medium will contribute greatly to a further compact structure of a recording and/or reproducing apparatus in which the medium is to be used.
摘要翻译：提供了一种光记录介质，其具有基板和设置在基板上的信号记录层，其中以微观凹坑的形式记录信息信号。光束聚焦在信号记录层上，并且检测由来自信号记录层的返回光所携带的光束的一些变化，以读取记录在信号记录层上的信息信号。光记录介质的直径为65mm以下，厚度为0.4〜0.7mm。信息信号记录区域从介质中心的12.5mm或更小的径向位置向外延伸。信息信号记录区域与非信号记录区域之间的面积比为3.4以上。该介质的存储容量为2 GB或更多。光记录介质在其中心处形成有中心孔，在该中心孔处形成有凸起到介质一侧的环形台面邻接。磁性夹紧轮毂安装在中心孔中，因此介质被磁力夹紧到光学记录和/或再现装置的旋转驱动机构。光记录介质的紧凑性和高密度记录对于使用介质的记录和/或再现装置的进一步紧凑结构将有很大的贡献。

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