公开(公告)号：US07106664B2

公开(公告)日：2006-09-12

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： G11B7/135 ,  G02B1/10

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：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：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：US06356395B1

公开(公告)日：2002-03-12

申请号：US09365824

申请日：1999-08-03

申请人： Fumihiro Tawa ,  Shinya Hasegawa

发明人： Fumihiro Tawa ,  Shinya Hasegawa

IPC分类号： G02B300

CPC分类号： G02B27/0927 ,  G02B3/0056 ,  G02B3/0068 ,  G02B3/04 ,  G02B27/09 ,  G02B27/0955 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/1398

摘要： A light intensity distribution converting device is formed by a transparent body having a first curved surface, a second curved surface, and an outer circumferential surface extending between the first and second curved surfaces. One of first and second surfaces has a concave surface configuration and the other has a convex surface configuration. Diverging light is made incident to the first curved surface, for example. The light intensity distribution of light made incident to the body from first curved surface is different from that of light emerging the body from the second curved surface, due to refractions at the first and second curved surfaces. The light intensity distribution converting device can be used as a collimator lens or an objective lens in an optical data storing apparatus.

摘要翻译： 光强分布转换装置由具有第一弯曲表面，第二弯曲表面和在第一和第二弯曲表面之间延伸的外周表面的透明体形成。 第一和第二表面中的一个具有凹面构造，另一个具有凸面构造。 例如，发散光入射到第一曲面。 由于第一和第二曲面处的折射，从第一曲面入射到本体的光的光强度分布与从第二曲面出射的光的光强度分布不同。 光强分布变换装置可以用作光学数据存储装置中的准直透镜或物镜。

公开(公告)号：US06201229B1

公开(公告)日：2001-03-13

申请号：US09128656

申请日：1998-08-04

申请人： Fumihiro Tawa ,  Shinya Hasegawa

发明人： Fumihiro Tawa ,  Shinya Hasegawa

IPC分类号： G02B704

CPC分类号： B23K26/032 ,  B23K26/06 ,  B23K26/064 ,  B23K26/0648 ,  B23K26/0665 ,  G02B26/02 ,  G02B27/09 ,  G11B7/1378 ,  G11B7/1381 ,  G11B7/1398

摘要： The light intensity converter comprises a transparent body including opposite first and second curved surfaces. The body is surrounded by an outer peripheral surface extending between the first and second curved surfaces. The body of the converter is arranged such that the incident light is made incident to the body at the first curved surface and emerges from the second curved surface. The incident light diverges in a certain area and converges in another area, by refraction, so that the light intensity distribution of the incident, first curved surface is converted into a different light intensity distribution while the light travels through the converter, and thus exits from the second curved surface.

摘要翻译： 光强转换器包括透明体，其包括相对的第一和第二曲面。 主体由在第一和第二弯曲表面之间延伸的外周表面包围。 转换器的主体被布置成使得入射光在第一弯曲表面处入射到主体并且从第二弯曲表面出射。 入射光在一定范围内发散，通过折射在另一个区域会聚，从而使入射的第一曲面的光强分布转换成不同的光强度分布，同时光线通过转换器，从而从 第二个曲面。

公开(公告)号：US20100290148A1

公开(公告)日：2010-11-18

申请号：US12776858

申请日：2010-05-10

申请人： Fumihiro Tawa ,  Wataru Odajima ,  Shinya Hasegawa

发明人： Fumihiro Tawa ,  Wataru Odajima ,  Shinya Hasegawa

IPC分类号： G11B5/02 ,  G11B5/66 ,  G11B5/73

CPC分类号： G11B5/667 ,  G11B5/7325 ,  G11B5/82 ,  G11B2005/0021

摘要： A magnetic recording medium used for the thermally assisted magnetic recording system which fires a laser beam at a magnetic recording medium to partially heat the medium and applies a magnetic field from the outside to the part heated to lower the coercivity for recording. The magnetic recording medium is configured by a glass substrate on which a heat radiation layer, heat retention layer, intermediate layer, and recording layer are stacked. Further, the heat retention layer is configured by a member having an effective refractive index lower than the effective refractive index of the recording layer and having an temperature diffusion coefficient determined by the specific heat, density, and heat conductivity rate higher than glass and lower than metal. The material with a high temperature diffusion coefficient is used lowered in temperature diffusion coefficient using a porous structure or granular structure.

摘要翻译： 一种用于热辅助磁记录系统的磁记录介质，其在磁记录介质上激发激光束以部分地加热介质并将磁场从外部施加到被加热以降低用于记录的矫顽力的部分。 磁记录介质由玻璃基板构成，其上堆叠有散热层，保温层，中间层和记录层。 此外，保温层由具有低于记录层的有效折射率的有效折射率的构件构成，并且具有由比玻璃高的比热，密度和导热率确定的温度扩散系数，并且低于 金属。 使用具有高温扩散系数的材料使用多孔结构或颗粒结构降低温度扩散系数。

公开(公告)号：US20090097364A1

公开(公告)日：2009-04-16

申请号：US12199504

申请日：2008-08-27

申请人： Fumihiro Tawa ,  Wataru Odajima ,  Shinya Hasegawa

发明人： Fumihiro Tawa ,  Wataru Odajima ,  Shinya Hasegawa

IPC分类号： G11B11/00

CPC分类号： G11B5/4866 ,  G11B5/314 ,  G11B5/3163 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A head slider is used for magnetic record by irradiating a recording medium with tiny spots of light. The head slider includes a slider main body having a bottom surface facing a recording medium and a top surface opposite to the bottom surface, an optical head provided in the slider main body to irradiate the recording medium with light and an optical layer to propagate light supplied from outside and lead the light to the optical head. The optical layer is curved along a curved surface formed in a portion of the slider main body to form a curved propagation path of light.

摘要翻译： 通过用微小的光照射记录介质，磁头滑块用于磁记录。 磁头滑动器包括具有面向记录介质的底表面和与底表面相对的顶表面的滑块主体，设置在滑块主体中的光学头，用于向记录介质照射光和光学层以传播提供的光 从外部引导光线到光头。 光学层沿着形成在滑块主体的一部分中的弯曲表面弯曲以形成弯曲的光的传播路径。

公开(公告)号：US07449278B2

公开(公告)日：2008-11-11

申请号：US10974162

申请日：2004-10-27

申请人： Fumihiro Tawa

发明人： Fumihiro Tawa

IPC分类号： G11B7/24 ,  G11B7/00 ,  G03C11/00

CPC分类号： G11B7/24038 ,  G11B7/00455 ,  G11B7/1275 ,  G11B7/13927 ,  G11B7/24 ,  G11B2007/0013 ,  Y10S430/146

摘要： A multilayer optical recording medium including a first recording layer for recording or reproducing information by using a first light beam having a center wavelength λ1, a first photochromic layer provided on the first recording layer, and a first optical waveguide layer provided on the first photochromic layer for guiding to the first photochromic layer a second light beam having a center wavelength λ2 different from the center wavelength λ1. The multilayer optical recording medium further includes a second recording layer provided on the first optical waveguide layer for recording or reproducing information by using the first light beam, a second photochromic layer provided on the second recording layer, and a second optical waveguide layer provided on the second photochromic layer for guiding the second light beam to the second photochromic layer. The first and second photochromic layers become transparent to the first light beam by irradiation with light or by application of heat. The reflectance of each of the first and second photochromic layers to the first light beam can be repeatedly increased by irradiation with the second light beam and can be repeatedly decrease to restore the transparent state.

摘要翻译： 一种多层光学记录介质，包括用于通过使用具有中心波长λ1的第一光束记录或再现信息的第一记录层，设置在第一记录层上的第一光致变色层和设置在第一光致变色层上的第一光波导层 用于引导第一光致变色层具有不同于中心波长λ1的中心波长λ2的第二光束。 多层光学记录介质还包括设置在第一光波导层上的第二记录层，用于通过使用第一光束记录或再现信息，设置在第二记录层上的第二光致变色层和设置在第二光波导层上的第二光波导层 用于将第二光束引导到第二光致变色层的第二光致变色层。 第一和第二光致变色层通过照射光或通过加热而变得对第一光束透明。 通过用第二光束的照射可以使第一和第二光致变色层中的每一个对第一光束的反射率反复增加，并且可以重复降低以恢复透明状态。

公开(公告)号：US20070188922A1

公开(公告)日：2007-08-16

申请号：US11442061

申请日：2006-05-26

申请人： Fumihiro Tawa ,  Shinya Hasegawa

发明人： Fumihiro Tawa ,  Shinya Hasegawa

IPC分类号： G11B5/00

CPC分类号： G11B5/02 ,  G01Q80/00 ,  G11B5/314 ,  G11B11/10536 ,  G11B2005/0005 ,  G11B2005/0021

摘要： There is provided a magnetic head and an information storage apparatus capable of applying light to a position close to a position to which a magnetic field is applied, without reducing the intensity of the magnetic field. The magnetic head includes a magnetic pole which emits a magnetic flux from an end thereof; an optical pole having an end aligned with the end of the magnetic pole and has a refractive index different from that of the magnetic pole; a light applying section which applies light to a side of the end of the optical pole from a position apart from the optical pole, and a filling section which fills the space between the light applying section and the end of the optical pole and has a refractive index different from any of those of the magnetic pole and optical pole.

摘要翻译： 提供了一种磁头和信息存储装置，其能够将光施加到靠近施加磁场的位置的位置，而不会降低磁场的强度。 磁头包括从其一端发射磁通的磁极; 具有与磁极的端部对准的端部并且具有与磁极的折射率不同的折射率的光学柱; 一个从远离光学杆的位置向光学端的一侧施加光的光施加部分，以及填充部分，其填充光施加部分和光学杆的端部之间的空间，并且具有折射 指数与磁极和光棒中的任何一个不同。