公开(公告)号：US07596295B2

公开(公告)日：2009-09-29

申请号：US11455725

申请日：2006-06-20

申请人： Shin-ya Hasegawa

发明人： Shin-ya Hasegawa

IPC分类号： G02B6/10

CPC分类号： G11B5/02 ,  G11B5/314 ,  G11B11/10536 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A magnetic disk device performs magnetic recording by generating a magnetic field using an electric current on a light-irradiated surface of a recording medium. A head unit is formed by laminating an optical film that transmits a light and a metal film through which the electric current flows. A light exposing unit irradiates the light in such a manner that the light is transmitted through the optical film and irradiated on a surface of the recording medium. An electric-current output unit outputs the electric current to the metal film.

摘要翻译： 磁盘装置通过在记录介质的光照射表面上使用电流产生磁场来执行磁记录。 通过层叠透射光的光学膜和电流流过的金属膜来形成头单元。 光曝光单元以这样的方式照射光，使得光透过光学膜并照射在记录介质的表面上。 电流输出单元将电流输出到金属膜。

公开(公告)号：US20050157393A1

公开(公告)日：2005-07-21

申请号：US11047185

申请日：2005-01-31

申请人： Shin-ya Hasegawa ,  Fumihiro Tawa

发明人： Shin-ya Hasegawa ,  Fumihiro Tawa

IPC分类号： G02B1/10 ,  G11B7/12 ,  G11B7/135 ,  G11B11/105

CPC分类号： G11B7/1387 ,  B82Y10/00 ,  G11B7/122

摘要： An optical head including a first dielectric layer having a first refractive index, a pair of second dielectric layers located adjacent to the first dielectric layer on both sides thereof, each of the second dielectric layers having a second refractive index larger than the first refractive index, a pair of third dielectric layers located adjacent to the second dielectric layers, and a pair of fourth dielectric layers located adjacent to the third dielectric layers, each of the fourth dielectric layers having a third refractive index larger than the first refractive index. Light is incident on the optical head in a direction orthogonal to a layering direction of the first to fourth dielectric layers. The first dielectric layer and each of the third dielectric layers have different refractive indices or different thicknesses.

摘要翻译： 一种光头，包括具有第一折射率的第一电介质层和位于其两侧与第一电介质层相邻的一对第二电介质层，每个第二电介质层的第二折射率大于第一折射率， 位于第二电介质层附近的一对第三电介质层和位于第三电介质层附近的一对第四电介质层，每个第四电介质层的第三折射率大于第一折射率。 光在与第一至第四电介质层的分层方向正交的方向上入射到光学头上。 第一电介质层和第三电介质层中的每一个具有不同的折射率或不同的厚度。

公开(公告)号：US4948213A

公开(公告)日：1990-08-14

申请号：US329327

申请日：1989-03-27

申请人： Shin-ya Hasegawa ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Shigetake Iwata

发明人： Shin-ya Hasegawa ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Shigetake Iwata

IPC分类号： G02B26/10

CPC分类号： G02B26/106

摘要： A light beam scanning apparatus includes a rotatable holographic disk having a hologram which is constructed by an interference of a reference wave and an objective wave, which is a coma wave, the coma wave having a focal length which decreases toward the outer periphery from the inner periphery of the holographic disk in a radial direction. The focal length has a different direction perpendicular to the radial direction, so that when the hologram of the holographic disk which rotates is reconstructed by a reconstruction wave, the scanning is effected by the beams diffracted by the hologram.

公开(公告)号：US4938550A

公开(公告)日：1990-07-03

申请号：US151616

申请日：1988-02-02

申请人： Takefumi Inagaki ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Shin-ya Hasegawa

发明人： Takefumi Inagaki ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Shin-ya Hasegawa

IPC分类号： G02B5/32 ,  G02B26/08

CPC分类号： G02B5/32 ,  G02B26/0808

摘要： A holographic deflection device having a tunable laser, and at least one hologram for deflecting light incident thereupon from the tunable laser, so that the deflection of the light can be controlled by a change of the wavelength of the beam from the tunable laser.

公开(公告)号：US06888786B2

公开(公告)日：2005-05-03

申请号：US10623979

申请日：2003-07-21

申请人： Nobuhide Aoyama ,  Shin-ya Hasegawa

发明人： Nobuhide Aoyama ,  Shin-ya Hasegawa

IPC分类号： G02B5/30 ,  G11B7/12 ,  G11B7/125 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B7/1353 ,  G02B5/3083 ,  G11B7/123 ,  G11B7/1263 ,  G11B7/1356 ,  G11B7/1359 ,  G11B11/10545

摘要： An optical device including a light source for emitting diverging light, a polarizing beam splitter for transmitting or reflecting the diverging light according to a polarized light component, a collimator lens for converting the diverging light transmitted through the polarizing beam splitter into collimated light, and an objective lens for focusing the collimated light on an object. The optical device further includes an optical element arranged between the collimator lens and the objective lens for producing a phase difference of +90°±15° or −90°±15° between P-polarized light and S-polarized light. The optical element has a principal axis perpendicular or parallel to a plane of incidence of the diverging light on the polarizing beam splitter. For example, the optical element is provided by a quarter-wave plate having an optic axis perpendicular or parallel to the plane of incidence of the diverging light on the polarizing beam splitter.

摘要翻译： 一种光学装置，包括用于发射发散光的光源，用于根据偏振光分量透射或反射发散光的偏振分束器，用于将透射通过偏振分束器的发散光转换成准直光的准直透镜，以及 用于将准直光聚焦在物体上的物镜。 光学装置还包括布置在准直透镜和物镜之间的光学元件，用于在P偏振光和S偏振光之间产生+ 90°±15°或-90°±15°的相位差。 光学元件具有与偏振分束器上的发散光的入射平面垂直或平行的主轴。 例如，光学元件由具有垂直于或平行于偏振分束器上的发散光的入射平面的光轴的四分之一波片提供。

公开(公告)号：US4957336A

公开(公告)日：1990-09-18

申请号：US269412

申请日：1988-11-10

申请人： Shin-ya Hasegawa ,  Masayuki Kato ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Takefumi Inagaki

发明人： Shin-ya Hasegawa ,  Masayuki Kato ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Takefumi Inagaki

IPC分类号： G02B26/10

CPC分类号： G02B26/106 ,  Y10S359/90

摘要： A high precision laser beam scanner is provided which is able to shape a beam generated by a laser, suppress the influence of jitter of a scanning beam due to mode hopping of a semiconductor laser, and reduce aberration of the scanning beam. A beam source generates a semiconductor laser beam, which is diffracted by a rotary hologram, forming a scanning beam on a surface to be scanned. An aberration correcting stationary hologram is disposed between the beam source and the rotary hologram. The stationary hologram is constructed with an object wave and a reference wave, which interfere on a stationary hologram substrate subject so that an aberration of the scanning beam on the surface to be scanned shall be corrected. The object wave is a spherical wave which has an aberration, a wave length shorter than that of the semiconductor laser beam, and an incident angle which is not vertical but is inclined with respect to the stationary hologram substrate. A method for fabricating the laser beam scanner is also provided.

摘要翻译： 提供了能够对由激光产生的光束进行成形的高精度激光束扫描器，抑制由于半导体激光器的跳跃而导致的扫描光束的抖动的影响，并且减小扫描光束的像差。 光束源产生通过旋转全息图衍射的半导体激光束，在要扫描的表面上形成扫描光束。 像差校正固定全息图设置在光束源和旋转全息图之间。 固定全息图由对象波和参考波构成，其干涉固定的全息图基板对象，使得要扫描的表面上的扫描光束的像差被校正。 对象波是具有像差，波长短于半导体激光束的像差的球面波，并且不是垂直但相对于静止全息图基板倾斜的入射角。 还提供了一种用于制造激光束扫描器的方法。

公开(公告)号：US20090244778A1

公开(公告)日：2009-10-01

申请号：US12485669

申请日：2009-06-16

申请人： Shin-ya Hasegawa ,  Wataru Odajima ,  Fumihiro Tawa ,  Yoshifumi Mizoshita

发明人： Shin-ya Hasegawa ,  Wataru Odajima ,  Fumihiro Tawa ,  Yoshifumi Mizoshita

IPC分类号： G11B5/60

CPC分类号： G11B5/314 ,  G11B5/102 ,  G11B5/3146 ,  G11B5/3163 ,  G11B5/3173 ,  G11B5/4833 ,  G11B11/10536 ,  G11B2005/0021

摘要： A head suspension assembly comprising: a head suspension; a head slider having the medium-opposed surface opposed to a storage medium, the head slider having the supported surface received on the head suspension, the supported surface being defined at the farside of the medium-opposed surface; an electromagnetic transducer embedded in the medium-opposed surface of the head slider; a light waveguide incorporated in the head slider, the light waveguide extending from the supported surface to the medium-opposed surface; and an optical element interposed between the supported surface and the head suspension, wherein the optical element defines: a light-collecting surface configured to collect light input into the optical element in parallel with the supported surface; and a light-reflective surface configured to reflect the light at a predetermined angle so as to direct the light to the light waveguide.

摘要翻译： 一种头部悬挂组件，包括：头部悬挂; 具有与存储介质相对的介质相对表面的磁头滑块，所述磁头滑块具有容纳在磁头悬架上的支撑表面，所述支撑表面限定在所述介质相对表面的所述边缘处; 嵌入在磁头滑块的介质相对表面中的电磁换能器; 光导波导，其结合在磁头滑块中，所述光波导从所述支撑的表面延伸到所述介质相对表面; 以及插入在所述支撑表面和所述头部悬置之间的光学元件，其中所述光学元件限定：集光表面，其被配置为收集与所述支撑表面平行的入射到所述光学元件中的光; 以及被配置为以预定角度反射光以将光引导到光波导的光反射表面。

公开(公告)号：US20070230048A1

公开(公告)日：2007-10-04

申请号：US11455725

申请日：2006-06-20

申请人： Shin-ya Hasegawa

发明人： Shin-ya Hasegawa

IPC分类号： G11B5/147

CPC分类号： G11B5/02 ,  G11B5/314 ,  G11B11/10536 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A magnetic disk device performs magnetic recording by generating a magnetic field using an electric current on a light-irradiated surface of a recording medium. A head unit is formed by laminating an optical film that transmits a light and a metal film through which the electric current flows. A light exposing unit irradiates the light in such a manner that the light is transmitted through the optical film and irradiated on a surface of the recording medium. An electric-current output unit outputs the electric current to the metal film.

摘要翻译： 磁盘装置通过在记录介质的光照射表面上使用电流产生磁场来执行磁记录。 通过层叠透射光的光学膜和电流流过的金属膜来形成头单元。 光曝光单元以这样的方式照射光，使得光透过光学膜并照射在记录介质的表面上。 电流输出单元将电流输出到金属膜。

公开(公告)号：US06950598B1

公开(公告)日：2005-09-27

申请号：US11015141

申请日：2004-12-17

申请人： Fumihiro Tawa ,  Shin-ya Hasegawa

发明人： Fumihiro Tawa ,  Shin-ya Hasegawa

IPC分类号： G02B6/12 ,  G02B6/122 ,  G02B6/26 ,  G11B7/12 ,  G11B7/135 ,  G11B7/22 ,  G11B11/105 ,  H01S5/022 ,  H01S5/10 ,  H01S5/20

CPC分类号： G11B7/1387 ,  G02B6/12004 ,  G02B6/1228 ,  G11B7/122 ,  G11B7/22 ,  G11B11/10541 ,  G11B11/1058 ,  H01S5/1014 ,  H01S5/1064 ,  H01S5/2004

摘要： The present invention provides a light emitting head which has high utilization efficiency of light and facilitates alignment with other heads and which facilitates fabrication, information storage device which provides high volume access to information with such a light emitting head, and composite head manufacturing method suitable to fabricate a composite head having such a light emitting head. The light emitting head includes: a first structure section including a first well propagating section consisting of a low extinction material with substantially negligible attenuation of light, a second well propagating section consisting of another low extinction material with substantially negligible attenuation of light, and whose refractive index is larger than that of the first well propagating section, and a poor propagating section consisting of a material with a propagating characteristics poorer than the second well propagating section; and a second structure section concentrating light on the first structure section.

摘要翻译： 本发明提供了一种发光头，其具有高的光利用效率并且便于与其它磁头对准并且便于制造，使用这种发光头提供高容量访问信息的信息存储装置，以及适于 制造具有这种发光头的复合头。 发光头包括：第一结构部分，包括由具有基本上可忽略的光衰减的低消光材料组成的第一阱传播部分，由另一种具有基本上可忽略的光衰减的低消光材料组成的第二阱传播部分， 指数大于第一井传播部分的指数，以及由具有比第二井传播部分差的传播特性的材料组成的差的传播部分; 以及将光集中在第一结构部分上的第二结构部分。

公开(公告)号：US06778485B2

公开(公告)日：2004-08-17

申请号：US10346464

申请日：2003-01-17

申请人： Hiroyasu Yoshikawa ,  Shin-ya Hasegawa ,  Tatsuo Uchida

发明人： Hiroyasu Yoshikawa ,  Shin-ya Hasegawa ,  Tatsuo Uchida

IPC分类号： G11B7135

CPC分类号： G11B7/1369 ,  G02F1/13471 ,  G11B7/13925 ,  G11B2007/0013

摘要： There are disclosed an optical storage device for accessing an optical recording medium such as a phase change type of optical disk and an optical magnetic disk, and a liquid crystal device preferably applicable to such a optical storage device. The liquid crystal device has a structure that two liquid crystal layers, each of which has stripe-like shaped electrodes arranged in a direction perpendicularly intersecting one another, are superposed. This structure makes it possible to effectively correct an aberration caused by a change in a depth from a surface of an optical recording medium to a condensing point, for example, in cases of unevenness in thickness of a protective layer and a multi-layer recording.

摘要翻译： 公开了一种用于访问诸如相变型光盘和光磁盘的光记录介质的光存储装置，以及优选适用于这种光存储装置的液晶装置。 液晶装置具有两个液晶层，每个液晶层具有沿彼此垂直相交的方向排列的条状形状的电极。 这种结构使得可以有效地校正由光记录介质的表面到聚光点的深度变化引起的像差，例如在保护层的厚度不均匀和多层记录的情况下。