公开(公告)号：US5220544A

公开(公告)日：1993-06-15

申请号：US525012

申请日：1990-05-18

申请人： Ikuya Kikuchi ,  Ryo Sato

发明人： Ikuya Kikuchi ,  Ryo Sato

IPC分类号： G11B11/10 ,  G11B11/105

CPC分类号： G11B11/10554 ,  G11B11/10571

摘要： A magnetic optical disk player comprises a turn table for turning a magnetic optical disk, guides for guiding a recording head carriage and an erasing head carriage along two different radial directions of the turn table, drivers for individually driving the recording head carriage and the erasing head carriage, and bias magnets for generating bias magnetic fields distributed along moving areas of the recording and erasing head carriages and having the directions opposite to each other, wherein the drivers include movable coils coupled with the recording head carriage and the erasing head carriage, drive magnets for generating drive magnetic fields interlinking the recording head coil and the erasing head coil, and a leaking flux from the drive magnets passes through the plane in the same direction of the bias magnetic field. The directions of the bias magnetic fields for erasing and recording heads are opposite to each other. The drive magnetic fields for positioning the erasing head carriage and the recording head carriage are also opposite to each other. The bias magnetic field and the drive magnetic field are additively coupled with each other.

摘要翻译： 磁性光盘播放器包括用于转动磁性光盘的转台，用于沿着转台的两个不同径向方向引导记录头托架和擦除头托架的引导件，用于单独驱动记录头托架和擦除头 滑架和偏置磁体，用于产生沿着记录和擦除头托架的移动区域分布并且具有彼此相反的方向的偏置磁场，其中驱动器包括与记录头托架和擦除头托架耦合的可动线圈，驱动磁体 用于产生将记录头线圈和擦除头线圈相互连接的驱动磁场，并且来自驱动磁体的泄漏磁通在偏置磁场的相同方向上穿过该平面。 用于擦除和记录头的偏置磁场的方向彼此相反。 用于定位擦除头托架和记录头托架的驱动磁场也彼此相对。 偏置磁场和驱动磁场彼此相加耦合。

公开(公告)号：US4901303A

公开(公告)日：1990-02-13

申请号：US226905

申请日：1988-08-01

申请人： Ikuya Kikuchi

发明人： Ikuya Kikuchi

IPC分类号： G11B5/02 ,  G11B11/10 ,  G11B11/105 ,  G11B17/04

CPC分类号： G11B17/041 ,  G11B11/1055

摘要： A photo-electro-magnetic disc device has a photo-electro-magnetic disc accommodated in a disc cartridge load as a unit into cartridge holder loaded in the disc device. The cartridge holder with the end of a loading mechanism moves the disc onto a turn table. An optical head and a magnetic field applying part for recording data are loaded facing opposite sides of the disc. Magnetic members are provided on the same side of the disc as is the optical head and are connected to the cartridge holder which is made of magnetic material as to confront magnetic field applying part through the disc. A magnetic circuit which includes the disc is thus formed whereby the magnetic flux from the magnetic field applying part passes through the disc thereby providing a high magnetic field strength throughout the entire region of the disc to be irradiated by a light spot from the optical head.

摘要翻译： 光电磁盘装置将容纳在作为一个单元的盘盒负载中的光电磁盘插入到装载在盘装置中的盒保持架中。 具有装载机构端部的盒架将盘移动到转台上。 用于记录数据的光学头和磁场施加部分朝向盘的相对侧被加载。 磁性构件设置在光盘头的同一侧上，并且与由磁性材料制成的盒保持器相连，以便通过盘面对磁场施加部件。 因此，形成包括盘的磁路，由此来自磁场施加部分的磁通量通过盘，从而在盘的整个区域提供高的磁场强度，以被来自光头的光点照射。

公开(公告)号：US20090059767A1

公开(公告)日：2009-03-05

申请号：US11918352

申请日：2006-03-31

申请人： Ikuya Kikuchi

发明人： Ikuya Kikuchi

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/1356 ,  G11B7/1369 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13925 ,  G11B7/1395 ,  G11B2007/0006

摘要： To reduce energy loss on an optical path and improve efficiency of using light volume of light source. A light beam in a P polarized state is emitted from a semiconductor laser 11, and simultaneously a first and second active λ/2 plates 1411 and 1412 are provided in a light path separation/composition unit 14. These first and second active λ/2 plates 1411 and 1412 are for example made of a liquid crystal panel, functions as a λ/2 plate in a turned-off state, and simply functions as a transmission film in a turned-on state. These turned-off and turned-on states are switched over in accordance with types of optical disc, and the optical beam with its polarized state controlled is separated with a third PBS 143. As a result, the light beam is irradiated onto the optical disc DK through a first objective lens 161 in the turned-off state of these first and second active λ/2 plates 1411 and 1412 and through a second objective lens 162 in the turned-on state thereof.

摘要翻译： 减少光路的能量损耗，提高光源使用量的效率。 从半导体激光器11发射P偏振态的光束，同时在光路分离/合成单元14中同时提供第一和第二有源λ/ 2板1411和1412。这些第一和第二有源λ/ 2 板1411和1412例如由液晶面板制成，在关闭状态下用作λ/ 2板，并且仅在起动状态下用作透射膜。 根据光盘的类型切换这些关闭和打开状态，并且利用第三PBS 143分离其被极化状态控制的光束。结果，将光束照射到光盘 DK通过这些第一和第二有源λ/ 2板1411和1412的截止状态下的第一物镜161，并且在其导通状态下通过第二物镜162。

公开(公告)号：US07453787B2

公开(公告)日：2008-11-18

申请号：US10593649

申请日：2005-03-17

申请人： Masakazu Ogasawara ,  Makoto Sato ,  Ikuya Kikuchi

发明人： Masakazu Ogasawara ,  Makoto Sato ,  Ikuya Kikuchi

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0948 ,  G11B7/1275 ,  G11B7/13927 ,  G11B2007/0006

摘要： An optical pickup projects laser beams having the first to the third wavelengths, in response to the type of a recording medium which is an object to which recording or reproduction is to be performed, and reflecting light from the recording medium is received by a light-detecting element. In order to reduce the sizes of the optical pickup, light of the second and the third wavelengths is generated by a single dual-wavelength light source, and reflecting light of all the wavelengths is to be received by the single light-detecting element. A hologram element giving different optical effects to light of each wavelength is arranged between the light irradiating means and the light-detecting element. Thus, appropriate information recording and reproduction can be performed by using light of each wavelength.

摘要翻译： 响应于要进行记录或再现的对象的记录介质的类型，并且来自记录介质的光被反射光接收，光拾取器投射具有第一至第三波长的激光束， 检测元件。 为了减小光学拾取器的尺寸，通过单个双波长光源产生第二和第三波长的光，并且所有波长的反射光将被单个光检测元件接收。 在光照射装置和光检测元件之间布置有对每个波长的光赋予不同光学效果的全息元件。 因此，可以通过使用每个波长的光来执行适当的信息记录和再现。

公开(公告)号：US07139234B2

公开(公告)日：2006-11-21

申请号：US10713038

申请日：2003-11-17

申请人： Masakazu Ogasawara ,  Ikuya Kikuchi

发明人： Masakazu Ogasawara ,  Ikuya Kikuchi

IPC分类号： G11B7/135

CPC分类号： G11B7/1369 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0006

摘要： An optical pickup is provided for recording and reproduction of information onto and from an optical disk. In the optical disk, in a forward optical path, a single polarized optical beam is converted to plural polarized optical beams. Polarization modes of the plural polarized optical beams are then converted to a polarization mode suitable for one of the recording and the reproduction to produce polarization-converted optical beams and to radiate the polarization-converted optical beams to the disk. In the backward optical path, polarization modes of the polarization-converted optical beams reflected from the disk are returned to the same polarization mode as that of the plural polarized optical beams, so that plural polarized reflected optical beams are produced. Polarization modes of the plural polarized reflected optical beams are then returned to the same polarization mode as the single polarized optical mode.

摘要翻译： 提供了用于在光盘上记录和再现信息的光学拾取器。 在光盘中，在正向光路中，单个偏振光束被转换为多个偏振光束。 然后将多个偏振光束的极化模式转换为适合于记录和再现之一的偏振模式，以产生偏振转换的光束，并将偏振转换的光束辐射到光盘。 在反向光路中，从盘反射的偏振光转换光束的偏振模式返回到与多个偏振光束相同的偏振模式，从而产生多个偏振反射光束。 然后，多个偏振反射光束的极化模式返回到与单偏振光学模式相同的偏振模式。

公开(公告)号：US06373807B1

公开(公告)日：2002-04-16

申请号：US09391178

申请日：1999-09-08

申请人： Sakashi Ohtaki ,  Ikuya Kikuchi

发明人： Sakashi Ohtaki ,  Ikuya Kikuchi

IPC分类号： G11B700

CPC分类号： G11B7/1374 ,  G11B7/1378 ,  G11B7/13922

摘要： An optical pickup includes a light source for emitting more than two light beams whose wavelengths are different from each other, and an objective lens including a first lens and a second lens. The first lens is a lens for collecting each light beam onto a recording medium. The second lens is a lens for compensating chromatic aberration in the light beams. The second lens is placed on the first lens in contact and is located across the optical path of each light beam. The absolute value of the difference between the Abbe number of the first lens and the Abbe number of the second lens is greater than 10.

摘要翻译： 光拾取器包括用于发射波长彼此不同的两个以上的光束的光源和包括第一透镜和第二透镜的物镜。 第一透镜是用于将每个光束收集到记录介质上的透镜。 第二透镜是用于补偿光束中的色差的透镜。 第二透镜被放置在接触的第一透镜上并且位于每个光束的光路两侧。 第一透镜的阿贝数与第二透镜的阿贝数之差的绝对值大于10。

公开(公告)号：US06353582B1

公开(公告)日：2002-03-05

申请号：US09458028

申请日：1999-12-10

申请人： Ikuya Kikuchi

发明人： Ikuya Kikuchi

IPC分类号： G11B709

CPC分类号： G11B7/13925 ,  G11B7/0908 ,  G11B7/0943 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1376 ,  G11B2007/0006

摘要： A pickup device for writing or reading information onto or from an optical disk having a recording surface that is covered with a transmission substrate. The pickup device detects first reflected light corresponding to first illuminated light which is illuminated via a portion with a numerical aperture that is less than or equal to a second predetermined numerical aperture which is smaller than the first predetermined numerical aperture, of a reflected light from the recording surface, generates a first error signal which indicates a focus error of the first illuminated light on the recording surface, detects second reflected light corresponding to second illuminated light which is illuminated via a portion with a numerical aperture that is less than or equal to a predetermined numerical aperture which is greater than the second predetermined numerical aperture, of the reflected light, generates a second error signal which indicates a focus error of the second illuminated light on the recording surface and obtains a signal corresponding to spherical aberration by using at least one of the first or second error signal.

摘要翻译： 一种用于在具有被传输基板覆盖的记录表面的光盘上写入或读取信息的拾取装置。 拾取装置检测对应于第一照明光的第一反射光，该第一反射光经由小于或等于小于第一预定数值孔径的第二预定数值孔径的数值孔径的部分照射来自 记录表面产生表示第一照明光在记录表面上的聚焦误差的第一误差信号，检测对应于第二照明光的第二反射光，该第二反射光经由数值孔径小于或等于 大于第二预定数值孔径的反射光的预定数值孔径产生第二误差信号，该第二误差信号指示记录表面上的第二照明光的聚焦误差，并且通过使用至少一个 的第一或第二误差信号。

公开(公告)号：US5022022A

公开(公告)日：1991-06-04

申请号：US279635

申请日：1988-12-05

申请人： Ikuya Kikuchi ,  Ryo Sato

发明人： Ikuya Kikuchi ,  Ryo Sato

IPC分类号： G11B7/09

CPC分类号： G11B7/093

摘要： An optical pickup for an optical recording disk in which a holder supports at least some of the optical member and has fixed thereto electrical coils for driving the holder perpendicularly to the disk and parallel to the disk. The holder is supported by four cantilevered supports having fixed ends fixed to a magnetic yoke forming part of the magnetic circuits in conjunction with the electrical coils. Preferably, the cantilevered supports are insulated from the yoke so as to provide power supply paths for the coils.

摘要翻译： 一种用于光记录盘的光学拾取器，其中保持器支撑至少一些光学构件并且固定到其上用于垂直于盘驱动保持器并平行于盘的电线圈。 支架由四个悬臂支撑支撑，悬臂支架具有固定在固定到磁轭上的磁轭，磁轭与电线圈一起形成磁路的一部分。 优选地，悬臂支撑件与轭绝缘，以便为线圈提供电源路径。

公开(公告)号：US4596448A

公开(公告)日：1986-06-24

申请号：US559536

申请日：1983-12-08

申请人： Ikuya Kikuchi

发明人： Ikuya Kikuchi

IPC分类号： G02B7/28 ,  G11B7/09 ,  G02B7/02 ,  G02B7/04

CPC分类号： G11B7/0932

摘要： An improved optical system support and positioning device for use in an optical reading apparatus, for instance, an optical or audio disc reading apparatus, in which the tracking function of the optical system is improved. An electromagnetic positioning structure moves the optical system parallel and perpendicular to the direction of the optical axis of the optical system while the optical system is supported by a support element. The support element includes a pair of cantilevered flexible members, a pair of substantially parallel support members, and an intermediate section joining ends of the flexible members and support members. In accordance with the invention, the distance between fixed ends of the support members is greater than the distance between the free ends thereof.

摘要翻译： 一种改进的光学系统支持和定位装置，其用于光学读取装置，例如光学或音频盘片读取装置，其中提高了光学系统的跟踪功能。 电磁定位结构使光学系统平行并垂直于光学系统的光轴的方向，同时光学系统由支撑元件支撑。 支撑元件包括一对悬臂柔性构件，一对基本上平行的支撑构件，以及连接柔性构件和支撑构件的端部的中间区段。 根据本发明，支撑构件的固定端之间的距离大于其自由端之间的距离。

公开(公告)号：US09042021B2

公开(公告)日：2015-05-26

申请号：US14111987

申请日：2011-04-14

申请人： Takayuki Nomoto ,  Ikuya Kikuchi

发明人： Takayuki Nomoto ,  Ikuya Kikuchi

IPC分类号： G02B27/14 ,  G02B27/10 ,  G02B3/00 ,  G02B27/01 ,  G02B27/48

CPC分类号： G02B3/005 ,  G02B3/0006 ,  G02B3/0056 ,  G02B27/0101 ,  G02B27/48 ,  G02B2027/0118

摘要： An optical element includes a first microlens array unit and a second microlens array unit in each of which a plurality of microlenses are arranged. The first and second microlens array units are arranged opposite to each other with a distance which is longer than a focal length of the microlenses arranged in the first microlens array unit. The first microlens unit is arranged on a light-incident side with respect to the second microlens array unit. The interval between the microlenses arranged in the second microlens array unit is narrower than the interval between the microlenses arranged in the first microlens array unit. The optical element can appropriately suppress the occurrence of excessive pixel bright spot.

摘要翻译： 光学元件包括第一微透镜阵列单元和第二微透镜阵列单元，每个阵列单元布置有多个微透镜。 第一和第二微透镜阵列单元彼此相对布置的距离比设置在第一微透镜阵列单元中的微透镜的焦距长。 第一微透镜单元相对于第二微透镜阵列单元布置在光入射侧。 布置在第二微透镜阵列单元中的微透镜之间的间隔比布置在第一微透镜阵列单元中的微透镜之间的间隔窄。 光学元件可以适当地抑制过量像素亮点的发生。