公开(公告)号：US5736235A

公开(公告)日：1998-04-07

申请号：US740708

申请日：1991-08-06

申请人： Yoshibumi Matsuda ,  Masaaki Futamoto ,  Yoshinori Miyamura ,  Tokuho Takagaki ,  Hisashi Takano ,  Fumio Kugiya ,  Takeshi Nakao ,  Kyo Akagi ,  Mikio Suzuki ,  Hirotsugu Fukuoka ,  Takayuki Munemoto

发明人： Yoshibumi Matsuda ,  Masaaki Futamoto ,  Yoshinori Miyamura ,  Tokuho Takagaki ,  Hisashi Takano ,  Fumio Kugiya ,  Takeshi Nakao ,  Kyo Akagi ,  Mikio Suzuki ,  Hirotsugu Fukuoka ,  Takayuki Munemoto

IPC分类号： G11B5/64 ,  G11B5/65 ,  G11B5/66 ,  G11B5/73 ,  G11B5/738 ,  G11B5/85 ,  G11B5/851

CPC分类号： G11B5/66 ,  G11B5/64 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/2495

摘要： A magnetic recording medium, its fabrication method, and a magnetic recording apparatus in which both saturation induction and coercive force of a magnetic film is made high as they are near a surface of the recording medium. A high density information recording can be made higher than 50 kFCI in linear recording density even for spacing around 0.2 .mu.m.

摘要翻译： 一种磁记录介质，其制造方法和磁记录装置，其中磁记录介质的表面附近磁饱和感应和磁性膜的矫顽力均较高。 即使对于0.2μm左右的间隔，高密度信息记录也可以使线性记录密度高于50kFCI。

公开(公告)号：US5253232A

公开(公告)日：1993-10-12

申请号：US501545

申请日：1990-03-30

申请人： Kyo Akagi ,  Takeshi Nakao ,  Masahiro Ojima

发明人： Kyo Akagi ,  Takeshi Nakao ,  Masahiro Ojima

IPC分类号： G11B5/60 ,  G11B11/105 ,  G11B17/32 ,  G11B13/04 ,  G11B21/21

CPC分类号： G11B5/6005 ,  G11B11/10552 ,  G11B11/10558 ,  G11B11/1058 ,  G11B11/10571

摘要： A magneto-optical recording apparatus including a magnetic head applying a magnetic field to a magneto-optical recording medium in a region wider than a minimum bit record area thereby forming a magnetic field region, a beam source and an optical system forming on the magneto-optical recording medium a laser beam spot defining the minimum bit record area, a modulation unit for modulating at least one of the magnetic field and the laser beam thereby forming the laser beam spot within the range of the magnetic field region, and a mechanical unit for moving the magnetic field region and the laser beam spot relative to each other on the magneto-optical recording medium while the modulation unit is under operation, the magnetic head being floated to be spaced apart from the surface of the magneto-optical recording medium by a distance not smaller than 10 .mu.m while the mechanical unit is under operation. The slider rails (11) each have a width of at least 2 mm, so as to increase the flying height of the slider (1017) over the medium.

摘要翻译： 一种磁光记录装置，包括在比最小位记录区域宽的区域中向磁光记录介质施加磁场的磁头，从而形成磁场区域，形成在磁光记录区域上的光束源和光学系统， 光记录介质，定义最小位记录区的激光束点，用于调制磁场和激光束中的至少一个的调制单元，从而在磁场区域的范围内形成激光束点;以及机械单元， 在调制单元正在操作的同时在磁光记录介质上相对于彼此移动磁场区域和激光束点，磁头浮动以与磁光记录介质的表面间隔一个 距离不小于10亩，而机械单位正在运行。 滑块轨道（11）各自具有至少2mm的宽度，以便增加滑块（1017）在介质上的飞行高度。

公开(公告)号：US5043960A

公开(公告)日：1991-08-27

申请号：US248376

申请日：1988-09-23

申请人： Takeshi Nakao ,  Masahiro Ojima

发明人： Takeshi Nakao ,  Masahiro Ojima

IPC分类号： G11B11/105

CPC分类号： G11B11/10576 ,  G11B11/10515 ,  G11B11/10519 ,  G11B11/10532 ,  G11B11/10552 ,  G11B11/10558 ,  G11B11/10571

摘要： According to the present invention, the apparatus is provided with a single laser light source and arranged so that light from the laser light source is divided into a plurality of beams by a grating and the plurality of beams are converged to form a plurality of light spots on a recording film by an optical system, whereby in writing information onto a recording film, overwriting to perform erasing and writing at the same time is carried out and an error check on the recorded information is performed in real time while a magnetic field which is polarity-inverted or intensity-modulated in accordance with the recording information is applied to the recording film.

摘要翻译： 根据本发明，该装置设置有单个激光源，并且被布置成使得来自激光光源的光被光栅分成多个光束，并且多个光束被会聚以形成多个光点 通过光学系统在记录膜上，由此在将信息写入到记录膜上的同时进行擦除和写入的覆盖，并且实时地执行对记录信息的错误检查，而磁场是 根据记录信息进行极性反转或强度调制的记录膜。

公开(公告)号：US5016234A

公开(公告)日：1991-05-14

申请号：US209982

申请日：1988-06-22

申请人： Shigeru Nakamura ,  Sadatsugi Machida ,  Takeshi Nakao ,  Masahiro Ojima

发明人： Shigeru Nakamura ,  Sadatsugi Machida ,  Takeshi Nakao ,  Masahiro Ojima

IPC分类号： G11B7/00 ,  G11B7/003 ,  G11B7/004 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/1356

摘要： In a two-laser beam optical head including first and second signal detectors for guiding emitting beams from first and second laser sources as two spots to an information medium and detecting the reflected beams from the two spots, the optical head of the present invention has the construction wherein the two laser sources are stored in one package, the emitting beams from two laser sources can be rotated together with a collimate lens with the optical axis of the collimate lens being the center in order to enable the two spots around the optical axis of a focusing lens as the center and the direction of the center line between the two spots can be changed so that the center line between the two spots is always perpendicular to the radial direction of the track on the information medium. The optical head includes further first and second radiating light power optical detectors for detecting the radiating light power of the first and second laser sources, whereby the second signal detector and at least one of the first and second radiating light power optical detector are constituted by one divided optical detector.

摘要翻译： 在包括第一和第二信号检测器的双激光束光头中，第一和第二信号检测器用于将来自第一和第二激光源的光束作为两个点引导到信息介质并检测来自两个光点的反射光束，本发明的光头具有 其中两个激光源存储在一个封装中，来自两个激光源的发射光束可以与准直透镜一起旋转，其中准直透镜的光轴为中心，以便能够使光轴周围的两个点 可以改变作为中心的聚焦透镜和两个光点之间的中心线的方向，使得两个光点之间的中心线总是垂直于信息介质上的光道的径向方向。 光头包括用于检测第一和第二激光源的辐射光功率的另外的第一和第二辐射光功率光检测器，由此第二信号检测器和第一和第二辐射光功率光检测器中的至少一个由一个 分光检测器。

公开(公告)号：US4982389A

公开(公告)日：1991-01-01

申请号：US145313

申请日：1988-01-19

申请人： Takeshi Nakao ,  Masahiro Ojima

发明人： Takeshi Nakao ,  Masahiro Ojima

IPC分类号： G11B11/105

CPC分类号： G11B11/10558 ,  G11B11/10508 ,  G11B11/10536 ,  G11B11/10552 ,  G11B11/10595 ,  G11B11/10571

摘要： A magneto-optical recorder comprising an optical head for projecting a light beam on a magneto-optical recording medium so as to form a light spot thereon, a magnetic head disposed at a predetermined distance from the optical head and applying a magnetic field modulated according to information to be recorded to the magneto-optical recording medium; and light intensity controlling means for varying the intensity of the light spot, responding to at least one of a focusing error signal indicating deviations of the light spot from the magneto-optical recording medium and a position signal indicating the relative position of the magneto-optical recording medium and the optical head, wherein, even if the intensity of the magnetic field applied to the recording medium varies, depending on vertical oscillations of the recording medium or on the position of the light spot, influences of variations in the intensity of the applied magnetic field are compensated by varying the intensity of the light spot so that fluctuations in the amount of recorded signals and imperfect erasing are suppressed.

摘要翻译： 一种磁光记录器，包括用于将光束投射到磁光记录介质上以在其上形成光点的光学头，设置在与光头相距预定距离的磁头，并施加根据 要记录到磁光记录介质的信息; 以及光强度控制装置，用于响应于指示光点与磁光记录介质的偏差的聚焦误差信号和表示磁光记录介质的相对位置的位置信号中的至少一个，改变光点的强度 记录介质和光学头，其中，即使施加到记录介质的磁场的强度根据记录介质的垂直振荡或光点的位置而变化，所施加的强度的变化的影响 通过改变光斑的强度来补偿磁场，从而抑制记录信号量和不完全擦除的波动。

公开(公告)号：US4803674A

公开(公告)日：1989-02-07

申请号：US932578

申请日：1986-11-20

申请人： Takeshi Nakao ,  Yutaka Akiba

发明人： Takeshi Nakao ,  Yutaka Akiba

IPC分类号： G11B5/02 ,  G11B11/10 ,  G11B11/105 ,  G11B11/14 ,  G11B13/04

CPC分类号： G11B11/10552 ,  G11B11/10536

摘要： A magneto-optical recorder is disclosed in which an external magnetic field required for recording and erasing can be produced by a small-sized electromagnetic coil having a small magneto-motive force. The electromagnetic coil is made up of a magnetic core and a coil winding, and the outer peripheral portion of the coil winding other than that peripheral portion thereof which confronts a recording medium, is covered by a core material. A magnetic field emanating from the electromagnetic coil spreads in a narrow space, and can be applied to the recording medium with large intensity even when the electromagnetic coil has a small magneto-motive force. In the recorder, a magnetic body is disposed such that the electromagnetic coil and the magnetic body face each other, to concentrate the magnetic field generated by the electromagnetic coil, to the vicinity of that portion of the recording medium which is irradiated with a light spot. The length of the electromagnetic coil is made equal to or greater than the length of the recording area of the recording medium, to apply a substantially uniform magnetic field to the whole recording area without moving the electromagnetic coil.

摘要翻译： 公开了一种磁光记录仪，其中通过具有小磁力的小型电磁线圈可以产生用于记录和擦除所需的外部磁场。 电磁线圈由磁芯和线圈绕组构成，除了与记录介质相对的其周边部分之外的线圈绕组的外周部分被芯材覆盖。 从电磁线圈发出的磁场在狭窄的空间中扩展，即使当电磁线圈具有小的磁力时也能够以大的强度施加于记录介质。 在记录器中，磁体被布置成使得电磁线圈和磁体彼此面对，以将由电磁线圈产生的磁场集中到被照射光斑的记录介质的那部分附近 。 使电磁线圈的长度等于或大于记录介质的记录区域的长度，以在不移动电磁线圈的情况下将整个记录区域施加基本均匀的磁场。

公开(公告)号：US08693075B2

公开(公告)日：2014-04-08

申请号：US13450507

申请日：2012-04-19

申请人： Takeshi Nakao ,  Kunikazu Ohnishi ,  Hiromi Kita ,  Norio Hosaka

发明人： Takeshi Nakao ,  Kunikazu Ohnishi ,  Hiromi Kita ,  Norio Hosaka

IPC分类号： G02B26/12

CPC分类号： G02B26/101 ,  G02B27/0911 ,  G02B27/0955 ,  G03B21/2033 ,  G03B33/06 ,  G03B33/12 ,  H04N9/3129 ,  H04N9/3194

摘要： Optical beams emitted by optical sources are incident on a mirror surface of a scan mirror in a substantially vertical direction and reflected in a substantially vertical direction by the scan mirror. The mirror surface of the scan mirror is driven to repeatedly rotate two-dimensionally by a predetermined scan angle by a scan mirror drive circuit. A polarized beam splitter causes the optical beam emitted by the optical source to be incident on the scan mirror through a quarter wave plate, and outputs the optical beam that has been reflected by the scan mirror and passed through the quarter wave plate toward the screen. A scan angle expander is arranged on the output side of the polarized beam splitter, whereby the scan angle of the optical beam is increased by N times.

摘要翻译： 由光源发射的光束以大致垂直的方向入射在扫描镜的镜面上，并通过扫描镜以基本上垂直的方向反射。 通过扫描镜驱动电路驱动扫描镜的镜面被二维重复旋转预定的扫描角。 偏振分束器使得由光源发射的光束通过四分之一波片入射到扫描镜上，并输出被扫描反射镜反射并通过四分之一波片的光束朝向屏幕。 在偏振分束器的输出侧设置有扫描角扩展器，由此使光束的扫描角度增加N次。

公开(公告)号：US20130076800A1

公开(公告)日：2013-03-28

申请号：US13552682

申请日：2012-07-19

申请人： Michio HATAGI ,  Takeshi Nakao ,  Tomoto Kawamura ,  Kunikazu Ohnishi ,  Hiromi Kita

发明人： Michio HATAGI ,  Takeshi Nakao ,  Tomoto Kawamura ,  Kunikazu Ohnishi ,  Hiromi Kita

IPC分类号： G03B21/28 ,  G09G5/10

CPC分类号： H04N9/3129 ,  G02B26/105 ,  G02B27/1006 ,  G02B27/104 ,  G02B27/1066 ,  G02B27/141

摘要： In a light beam scanning projection apparatus which scans a light beam emitted from a laser light source, an image display apparatus is configured including a plurality of light beams, a reflection mirror for reflecting the light beams to project them onto a screen or the like, and a mirror driving unit for driving the reflection mirror so that the plurality of light beams are incident on the reflection mirror with different optical axes and projected on different projection areas, thereby displaying a single image with a plurality of images. Further, by forming a single image by causing a plurality of the light beams to have predetermined relative angles thereamong so as to make a plurality of images overlap on each other with slight shifts, a scanning projection apparatus is provided with which the luminance of the image is improved while conforming to safety standards.

摘要翻译： 在扫描从激光光源发射的光束的光束扫描投影装置中，图像显示装置被配置为包括多个光束，用于反射光束以将其投影到屏幕等上的反射镜， 以及反射镜驱动单元，用于驱动反射镜，使得多个光束以不同的光轴入射在反射镜上并投影在不同的投影区域上，从而显示具有多个图像的单个图像。 此外，通过使多个光束以预定的相对角度形成单个图像，以便使多个图像彼此轻微地重叠，提供了一种扫描投影装置，其中图像的亮度 在符合安全标准的情况下得到改进。

公开(公告)号：US20120327373A1

公开(公告)日：2012-12-27

申请号：US13526564

申请日：2012-06-19

申请人： Norio HOSAKA ,  Eiji Tsubono ,  Takeshi Nakao ,  Fumio Haruna

发明人： Norio HOSAKA ,  Eiji Tsubono ,  Takeshi Nakao ,  Fumio Haruna

IPC分类号： G03B21/14

CPC分类号： G02B26/101 ,  H04N9/3129

摘要： The present invention provides a scan-type image display device. In the scan-type image display device, laser light sources respectively generate light beams of green, red and blue, which in turn are combined by dichroic mirrors to generate a first beam and a second beam. A deflecting mirror device two-dimensionally scans the first and second beams under the rotation of a deflecting mirror thereof. The outgoing directions of the first and second beams have an angular difference relative to the vertical direction of a screen, and an interval between the first and second laser beams is set to be larger than an aperture diameter defined by laser safety standards.

摘要翻译： 本发明提供一种扫描型图像显示装置。 在扫描型图像显示装置中，激光源分别产生绿色，红色和蓝色的光束，其又由分色镜组合以产生第一光束和第二光束。 偏转镜装置在其偏转镜的旋转下二维扫描第一和第二光束。 第一和第二光束的出射方向相对于屏幕的垂直方向具有角度差，并且第一和第二激光束之间的间隔被设定为大于由激光安全标准定义的孔径直径。

公开(公告)号：US20090295507A1

公开(公告)日：2009-12-03

申请号：US12542733

申请日：2009-08-18

申请人： Hajime Kando ,  Shunsuke Kido ,  Takeshi Nakao ,  Daisuke Yamamoto

发明人： Hajime Kando ,  Shunsuke Kido ,  Takeshi Nakao ,  Daisuke Yamamoto

IPC分类号： H03H9/02

CPC分类号： H03H9/02921 ,  H03H9/0071 ,  H03H9/02858 ,  H03H9/02881 ,  H03H9/14538 ,  H03H9/14594

摘要： An acoustic wave element includes an IDT electrode in contact with a piezoelectric material and including a plurality of electrode fingers, which include first and second electrode fingers that adjoin each other in an acoustic wave propagation direction and that connect to different potentials and a first dummy electrode finger facing the first electrode finger via a gap located on an outer side in an electrode finger length direction of the first electrode finger. At an area near the gap, first protrusions are provided in at least one of the first electrode finger and the first dummy electrode finger, the first protrusion protruding in the acoustic wave propagation direction from at least one of side edges of the at least one of the first electrode finger and the first dummy electrode finger. The acoustic wave element has greatly improved resonance characteristics of a resonance frequency and prevents short-circuit failure between electrode fingers and degradation in insulation properties.

摘要翻译： 声波元件包括与压电材料接触并包括多个电极指的IDT电极，其包括在声波传播方向上彼此相邻并连接到不同电位的第一和第二电极指，并且连接到不同的电位，第一虚拟电极 手指经由位于第一电极指的电极指长度方向的外侧的间隙面对第一电极指。 在间隙附近的区域，第一突起设置在第一电极指和第一虚拟电极指中的至少一个中，第一突起从声波传播方向从至少一个侧边缘突出， 第一电极指和第一虚拟电极指。 声波元件大大改善了谐振频率的谐振特性，并且防止电极指之间的短路故障和绝缘性能的劣化。