公开(公告)号：US06229782B1

公开(公告)日：2001-05-08

申请号：US09179278

申请日：1998-10-26

申请人： Yugang Wang ,  Chuan He ,  Hong Chen ,  Joseph J. Miceli ,  Charles C. Cheng ,  Ross W. Stovall

发明人： Yugang Wang ,  Chuan He ,  Hong Chen ,  Joseph J. Miceli ,  Charles C. Cheng ,  Ross W. Stovall

IPC分类号： G11B700

CPC分类号： G02B5/1876 ,  B82Y10/00 ,  G02B5/1885 ,  G11B7/122 ,  G11B7/1353 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/22 ,  G11B11/10532 ,  G11B11/10543 ,  G11B11/10554 ,  G11B11/1058 ,  G11B2007/13722

摘要： An optical focusing device for focusing an incident optical beam onto a focal plane, as a focal spot. The optical focusing device includes an incident central refractive facet upon which an optical beam impinges, and a high-index glass body through which the incident optical beam passes toward a bottom reflective surface. The bottom reflective surface reflects the optical beam through the body, toward a peripheral reflector. The peripheral reflector focuses the optical beam toward a focal plane on which the focal spot is formed. The focal plane is defined within a pedestal that forms part of the optical focusing device, and that extends from the bottom reflective surface. The central facet is conically shaped for refracting the incident optical beam away from the pedestal, onto the bottom reflective surface. The peripheral reflector surrounds the central facet and can have various appropriate shapes, such as an aspherical shape or a tilted parabolic shape, which compensates for the conical factor and aberrations introduced by the central facet. The top surface includes the central facet and the peripheral facet, and can be made substantially flat using diffractive optical elements or Fresnel optics. The focal spot of the optical rays can be optimized using sequential quadratic program and a set of optimized coefficients.

摘要翻译： 一种用于将入射光束聚焦到焦平面上的聚焦装置作为焦点。 光聚焦装置包括光束入射的入射中心折射面和入射光束通过其朝向底部反射表面的高折射率玻璃体。 底部反射表面将光束通过主体反射到外围反射器。 外围反射器将光束聚焦到其上形成焦点的焦平面上。 焦平面被限定在形成光学聚焦装置的一部分的基座内，并且从底部反射表面延伸。 中心小面是圆锥形的，用于将入射光束从基座折回到底部反射表面上。 外围反射器围绕中心小平面并且可以具有各种适当的形状，例如非球面形状或倾斜的抛物线形状，其补偿由中心小面引入的锥形因子和像差。 顶表面包括中心小面和外围小面，并且可以使用衍射光学元件或菲涅耳光学器件使其基本上平坦。 可以使用顺序二次程序和一组优化的系数来优化光线的焦点。

公开(公告)号：US06377535B1

公开(公告)日：2002-04-23

申请号：US09179279

申请日：1998-10-26

申请人： Hong Chen ,  Chuan He ,  Carl J. Carlson ,  Joseph J. Miceli, Jr. ,  Charles C. Cheng ,  Yugang Wang

发明人： Hong Chen ,  Chuan He ,  Carl J. Carlson ,  Joseph J. Miceli, Jr. ,  Charles C. Cheng ,  Yugang Wang

IPC分类号： G11B7135

CPC分类号： G11B11/10554 ,  B82Y10/00 ,  G02B5/1876 ,  G02B5/1885 ,  G11B7/122 ,  G11B7/1353 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/22 ,  G11B11/10532 ,  G11B11/10543 ,  G11B11/1058 ,  G11B2007/13722

摘要： An optical focusing device for focusing an incident optical beam onto a focal plane, as a focal spot. The optical focusing device includes an incident central refractive facet upon which an optical beam impinges, and a high-index glass body through which the incident optical beam passes toward a bottom reflective surface. The bottom reflective surface reflects the optical beam through the body, toward a peripheral reflector. The peripheral reflector focuses the optical beam toward a focal plane on which the focal spot is formed. The focal plane is defined within a pedestal that forms part of the optical focusing device, and that extends from the bottom reflective surface. The central facet is conically shaped for refracting the incident optical beam away from the pedestal, onto the bottom reflective surface. The peripheral reflector surrounds the central facet and can have various appropriate shapes, such as an aspherical shape or a tilted parabolic shape, which compensates for the conical factor and aberrations introduced by the central facet. The top surface includes the central facet and the peripheral facet, and can be made substantially flat using diffractive optical elements or Fresnel optics.

摘要翻译： 一种用于将入射光束聚焦到焦平面上的聚焦装置作为焦点。 光聚焦装置包括光束入射的入射中心折射面和入射光束通过其朝向底部反射表面的高折射率玻璃体。 底部反射表面将光束通过主体反射到外围反射器。 外围反射器将光束聚焦到其上形成焦点的焦平面上。 焦平面被限定在形成光学聚焦装置的一部分的基座内，并且从底部反射表面延伸。 中心小面是圆锥形的，用于将入射光束从基座折回到底部反射表面上。 外围反射器围绕中心小平面并且可以具有各种适当的形状，例如非球面形状或倾斜的抛物线形状，其补偿由中心小面引入的锥形因子和像差。 顶表面包括中心小面和外围小面，并且可以使用衍射光学元件或菲涅耳光学器件使其基本上平坦。

公开(公告)号：US06404706B1

公开(公告)日：2002-06-11

申请号：US09429553

申请日：1999-10-28

申请人： Ross W Stovall ,  Yugang Wang ,  Carl J Carlson

发明人： Ross W Stovall ,  Yugang Wang ,  Carl J Carlson

IPC分类号： G11B1100

CPC分类号： G11B5/00 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/012 ,  G11B5/314 ,  G11B5/3967 ,  G11B5/486 ,  G11B5/4886 ,  G11B13/045 ,  G11B2005/0021 ,  G11B2005/3996

摘要： A head gimbal assembly includes a magneto-resistive read element integrated with a thermally assisted write element. The head gimbal assembly includes an optical waveguide positioned between two write poles to transmit a laser beam to a recording medium. The laser beam heats the medium sufficiently and lowers its coercivity in order to facilitate writing. A laser assembly is attached to a suspension for achieving direct coupling of the laser beam to an input end of the optical waveguide. The laser assembly is produced using cost effective wafer processing techniques. The use of silicon for the mounting block allows it to be used as a heat sink, for conducting heat away from the laser diode and into the suspension.

摘要翻译： 头万向架组件包括与热辅助写入元件集成的磁阻读取元件。 头万向架组件包括位于两个写极之间的光波导，以将激光束传输到记录介质。 激光束充分加热介质并降低其矫顽力，以便于书写。 激光组件附接到悬架，以实现激光束直接耦合到光波导的输入端。 使用经济有效的晶片处理技术生产激光组件。 将硅用于安装块允许其用作散热器，用于将热量从激光二极管传导到悬架中。

公开(公告)号：US08279719B1

公开(公告)日：2012-10-02

申请号：US12572060

申请日：2009-10-01

申请人： Yufeng Hu ,  Yugang Wang

发明人： Yufeng Hu ,  Yugang Wang

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/105 ,  G11B5/1278 ,  G11B5/6088 ,  G11B2005/0021

摘要： A method and system for providing an energy assisted magnetic recording (EAMR) transducer coupled with a laser are described. The EAMR transducer has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The method and system include providing at least one waveguide, at least one write pole, and at least one coil. The waveguide(s) are for directing the energy from the laser toward the ABS. The write pole(s) each include a write pole tip, a yoke, a back pedestal and a return pole. The write pole tip is coupled to the back pedestal through the yoke. The back pedestal has at least one aperture therein. The aperture(s) are configured to allow the energy from the laser to pass therethrough. The coil(s) are for energizing the at least one write pole.

摘要翻译： 描述了一种用于提供与激光器耦合的能量辅助磁记录（EAMR）传感器的方法和系统。 EAMR传感器具有配置成在使用期间驻留在介质附近的空气轴承表面（ABS）。 该方法和系统包括提供至少一个波导，至少一个写极点和至少一个线圈。 波导用于将来自激光器的能量引导到ABS。 写极点各自包括写极端，磁轭，后基座和返回极。 写极尖通过轭耦合到后基座。 后座具有至少一个孔。 孔被配置为允许来自激光器的能量通过。 线圈用于激励至少一个写极。

公开(公告)号：US07337530B1

公开(公告)日：2008-03-04

申请号：US11699777

申请日：2007-01-30

申请人： Kroum S. Stoev ,  Francis H. Liu ,  Yugang Wang

发明人： Kroum S. Stoev ,  Francis H. Liu ,  Yugang Wang

IPC分类号： G11B5/147

CPC分类号： G11B5/313 ,  G11B5/1278 ,  G11B5/3116 ,  G11B2005/0029 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49046 ,  Y10T29/4905

摘要： A method of making a perpendicular magnetic recording head for use in a data storage device includes forming a first pole layer, a second pole layer, a third pole layer, and a shield layer of a write section. The first pole layer, second pole layer, third pole layer, and shield layer are formed without using a chemical mechanical polishing process. The method next includes concurrently trimming the shield layer and a write pole that is defined by the third pole layer to a predetermined track width. In the trimming step, the shield layer is used as a mask for the write pole.

摘要翻译： 制造用于数据存储装置的垂直磁记录头的方法包括形成写入部分的第一极层，第二极层，第三极层和屏蔽层。 在不使用化学机械抛光工艺的情况下形成第一极层，第二极层，第三极层和屏蔽层。 该方法接下来包括同时修整屏蔽层和由第三极层限定到预定磁道宽度的写入极。 在修整步骤中，屏蔽层用作写入极的掩模。

公开(公告)号：US06724572B1

公开(公告)日：2004-04-20

申请号：US10086756

申请日：2002-02-28

申请人： Kroum Stoev ,  Yugang Wang ,  Francis Liu ,  Yingjian Chen ,  Xiaozhong Dang

发明人： Kroum Stoev ,  Yugang Wang ,  Francis Liu ,  Yingjian Chen ,  Xiaozhong Dang

IPC分类号： G11B5147

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/187 ,  G11B5/23 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3146 ,  G11B5/332 ,  G11B5/3909 ,  G11B5/3967 ,  G11B2005/3996

摘要： In one aspect, an inductive transducer is disclosed having a leading pole layer and a leading pole tip, with the pole layer being further removed than the pole tip from a media-facing surface. In another aspect, an inductive transducer is disclosed having a magnetic pedestal disposed between a leading pole layer and a leading pole tip, with at least one of the pedestal and pole layer being further removed than the pole tip from a media-facing surface. In another aspect, a leading pole layer or pedestal may have a surface that slopes away from the media-facing surface with increasing distance forward from the leading pole tip.

摘要翻译： 在一个方面，公开了一种电感式换能器，其具有引导极层和引导极尖端，其中极层比面向介质的表面比极尖更进一步去除。 另一方面，公开了一种电感换能器，其具有设置在引导极层和前导极尖端之间的磁性基座，其中基座和极层中的至少一个比来自面向介质的表面的极尖更进一步地去除。 在另一方面，前导极层或基座可以具有远离所述面向介质的表面的表面，所述表面具有与所述引导极端部向前的距离增加的距离。

公开(公告)号：US5978319A

公开(公告)日：1999-11-02

申请号：US965340

申请日：1997-11-06

申请人： Yugang Wang ,  Tatsuaki Hishida

发明人： Yugang Wang ,  Tatsuaki Hishida

IPC分类号： G11B5/10 ,  G11B5/17 ,  G11B5/31 ,  G11B11/105 ,  H01F27/28 ,  H01Q7/00 ,  G11B11/00

CPC分类号： H01F27/2804 ,  G11B11/10534 ,  G11B11/1058 ,  H01Q7/00 ,  G11B5/10 ,  G11B5/17 ,  G11B5/3106

摘要： A coil assembly for use in an optical or a magneto-optical data storage system includes an undercoat and an electrically conductive coil formed of a length of electrical conductor and deposited and secured to the undercoat by means of available wafer processing techniques. The conductive coil terminates in two bonding pads for providing electrical connection to the coil, such that the coil is capable of sustaining an electrical current in excess of approximately 300 mA. The coil is also capable of generating a vertical magnetic field intensity greater than, or equal to approximately 200 Oersteds, and has a resistance of less than, or equal to approximately 2 ohms. The coil assembly further includes a yoke, and an insulation layer which encapsulates at least part of the conductor. The conductor is formed of a plurality of multi-layered turns, such that a first layer is connected to one contact pad and is looped helically, inwardly, and terminates in an innermost turn with a terminal end. A second layer includes an innermost terminal end that overlays the innermost terminal end of the first layer, in order to establish an electrical contact therewith, and to ensure the continuity of the electrical path formed by the coil. The second layer is coiled into a plurality of concentric helical turns, similar to, and in a same coiling direction as the first layer. The conductor is made of a electrically conductive material and has a substantially uniform square cross-sectional area along its entire length.

摘要翻译： 用于光学或磁光数据存储系统的线圈组件包括底涂层和由一定长度的电导体形成并通过可用的晶片处理技术沉积并固定到底涂层的导电线圈。 导电线圈终止于两个接合焊盘，用于提供与线圈的电连接，使得线圈能够维持超过约300mA的电流。 线圈还能够产生大于或等于约200奥斯特的垂直磁场强度，并具有小于或等于约2欧姆的电阻。 线圈组件还包括轭，以及封装至少部分导体的绝缘层。 导体由多个多层匝形成，使得第一层连接到一个接触焊盘，并且被螺旋形地向内环绕，并且以终端终止于最内圈。 第二层包括覆盖第一层的最内端的最内端，以便与其形成电接触，并确保由线圈形成的电路的连续性。 第二层卷绕成与第一层类似并且在与第一层相同的卷取方向上的多个同心螺旋形匝。 导体由导电材料制成，并且沿着其整个长度具有基本均匀的正方形横截面积。

公开(公告)号：US5903525A

公开(公告)日：1999-05-11

申请号：US844167

申请日：1997-04-18

申请人： Terry McDaniel ,  Yugang Wang

发明人： Terry McDaniel ,  Yugang Wang

IPC分类号： G11B5/127 ,  G11B5/17 ,  G11B5/31 ,  G11B7/12 ,  G11B7/135 ,  G11B11/105 ,  G11B11/00

CPC分类号： G11B7/1384 ,  G11B11/10534 ,  G11B11/1058 ,  G11B7/122 ,  G11B11/10543 ,  G11B11/10554 ,  G11B5/1278 ,  G11B5/17 ,  G11B5/313

摘要： A planar micro-coil is provided for use with an optical head. The optical head is preferably a flying magneto-optical head. The micro-coil cooperates with a yoke assembly so to as to permit an optimal magnetic flux density to be formed at a surface of a magneto-optical storage location.

摘要翻译： 提供平面微型线圈用于光学头。 光头优选为飞行磁光头。 微型线圈与轭组件配合，以便允许在磁光存储位置的表面处形成最佳的磁通密度。

公开(公告)号：US08792208B1

公开(公告)日：2014-07-29

申请号：US13481158

申请日：2012-05-25

申请人： Feng Liu ,  Yugang Wang ,  Zhigang Bai ,  Hongzhou Jiang ,  Tao Pan ,  Shaoping Li

发明人： Feng Liu ,  Yugang Wang ,  Zhigang Bai ,  Hongzhou Jiang ,  Tao Pan ,  Shaoping Li

IPC分类号： G11B5/11

CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315

摘要： A method and system provide a magnetic recording transducer having air-bearing surface (ABS). The magnetic recording transducer includes a pole, a side shield, a nonmagnetic gap between the side shield and the pole and at least one coil for energizing the pole. The pole has a pole tip proximate to the ABS. The side shield includes at least one nonconformal portion that extends from a throat height in a stripe height direction perpendicular to the ABS and is nonconformal with the pole. The spacing between the nonconformal portion(s) of the side shield and the pole varies based on a distance from the ABS.

摘要翻译： 一种方法和系统提供具有空气轴承表面（ABS）的磁记录换能器。 磁记录传感器包括极，侧屏蔽，侧屏蔽和极之间的非磁性间隙，以及至少一个用于激励磁极的线圈。 极杆具有靠近ABS的极尖。 所述侧护罩包括至少一个非整形部分，其从与所述ABS垂直的条带高度方向上的喉部高度延伸并且与所述杆不一致。 侧护罩的非共形部分和极之间的间距基于距离ABS的距离而变化。

公开(公告)号：US08724259B1

公开(公告)日：2014-05-13

申请号：US13493903

申请日：2012-06-11

申请人： Feng Liu ,  Dehua Han ,  Yugang Wang ,  Zhigang Bai ,  Tao Pan

发明人： Feng Liu ,  Dehua Han ,  Yugang Wang ,  Zhigang Bai ,  Tao Pan

IPC分类号： G11B5/147

CPC分类号： G11B5/11 ,  G11B5/1278 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/4886

摘要： A perpendicular magnetic recording writer for use in a data storage device, the recording transducer has a magnetic writer pole, a pole tip facing an air bearing surface (ABS). The pole tip has a pole face, leading side wall, a trailing side wall, a first side wall and a second side wall. A trailing side wall nonmagnetic gap layer on the trailing side wall, a first side wall nonmagnetic gap layer deposited on the first side wall, and a second side wall nonmagnetic gap layer deposited on the second side wall. A high magnetic moment seed layer is deposited on the trailing side wall nonmagnetic gap layer, the first side wall nonmagnetic gap layer, and the second side wall nonmagnetic gap layer. In other aspects of the invention shields are provided that have magnetic moments less than the magnetic moment of the seed layers.

摘要翻译： 一种在数据存储装置中使用的垂直磁记录刻录机，记录换能器具有磁写入极，极尖面向空气轴承表面（ABS）。 极尖具有极面，前侧壁，后侧壁，第一侧壁和第二侧壁。 在后侧壁上的后侧壁非磁性间隙层，沉积在第一侧壁上的第一侧壁非磁性间隙层和沉积在第二侧壁上的第二侧壁非磁性间隙层。 在后侧壁非磁性间隙层，第一侧壁非磁性间隙层和第二侧壁非磁性间隙层上沉积高磁矩种子层。 在本发明的其它方面，提供了具有小于种子层的磁矩的磁矩的屏蔽。