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：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。

公开(公告)号：US06560189B2

公开(公告)日：2003-05-06

申请号：US09736066

申请日：2000-12-13

申请人： Nobuhide Aoyama ,  Shin-ya Hasegawa

发明人： Nobuhide Aoyama ,  Shin-ya Hasegawa

IPC分类号： G11B700

CPC分类号： G11B11/10541 ,  G11B7/123 ,  G11B7/1263 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1362 ,  G11B7/1381

摘要： There is disclosed a compact optical information storage apparatus in which noise attributed to wobbling or the like is reduced and high-density recording is possible. An optical device 410 comprises a reflective surface 64 including a main portion for reflecting a signal light reflected by a separation surface 61 in a predetermined direction, and a mask portion 411 having an optical property different from the optical property of the main portion.

摘要翻译： 公开了一种紧凑的光学信息存储装置，其中归因于摆动等的噪声降低，并且可以进行高密度记录。 光学装置410包括反射表面64，反射表面64包括用于反射沿预定方向由分离表面61反射的信号光的主要部分和具有不同于主要部分的光学性质的光学性质的掩模部分411。

公开(公告)号：US06407967B1

公开(公告)日：2002-06-18

申请号：US09223656

申请日：1998-12-30

申请人： Wataru Odajima ,  Shin-ya Hasegawa

发明人： Wataru Odajima ,  Shin-ya Hasegawa

IPC分类号： G11B7095

CPC分类号： G11B7/131 ,  G11B7/094 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/1359 ,  G11B7/1372 ,  G11B7/1381 ,  G11B11/10576

摘要： An optical apparatus can eliminate offset resulting from assembling errors and also can correct offset even in the photodetector of any optical system. An optical disk apparatus for reading information from tracks traces the track with the condensed spot of light beam depending on the tracking error signal obtained from the optical system for tracking error detection. The tracking error detecting optical system includes an optical apparatus having a photodetector for outputting, as the tracking error signal, a differential value of outputs of a plurality of light receiving sections for receiving the light beam condensed by the condenser lens. Also, an optical element is provided for relatively increasing and/or decreasing the amount of receiving light of a light receiving section depending on displacement of the optical axis of the light beam, in order to balance the light received by the light receiving sections and compensate for affect.

摘要翻译： 光学装置可以消除由组装误差引起的偏移，并且即使在任何光学系统的光电检测器中也能校正偏移。 用于从轨道读取信息的光盘装置根据从用于跟踪误差检测的光学系统获得的跟踪误差信号来跟踪光束的聚光点。 跟踪误差检测光学系统包括具有光检测器的光学装置，该光检测器用于输出用于接收由聚光透镜聚光的光束的多个光接收部分的输出的差分值作为跟踪误差信号。 而且，提供一种光学元件，用于根据光束的光轴的位移来相对增加和/或减少光接收部分的接收光量，以平衡由光接收部分接收的光并补偿 为了影响。