公开(公告)号：US20190101374A1

公开(公告)日：2019-04-04

申请号：US16129830

申请日：2018-09-13

Applicant: OMRON Corporation

Inventor： Mariko MARUKAWA ,  Takahiro OKUDA ,  Kosuke SUGIYAMA

IPC: G01B11/02 ,  G01B11/24 ,  G01B9/04 ,  G11B11/105

CPC classification number: G01B11/026 ,  G01B9/04 ,  G01B11/0608 ,  G01B11/24 ,  G01B2210/50 ,  G11B11/10532

Abstract: Provided is a sensor head that can increase the flexibility of installation. The sensor head is a sensor head of a sensor for measuring displacement of a measurement object. The sensor head includes: a diffractive lens generating chromatic aberration along an optical axis direction on an incident light, a case part housing at least the diffractive lens inside, and fixing parts and used for fixing to a fixing object. The case part includes a cylindrical part having a cylindrical outer shape, and the outer shapes of the fixing parts and are within the outer shape of the cylindrical part when viewed in a central axis direction of the cylindrical part.

公开(公告)号：US09875767B2

公开(公告)日：2018-01-23

申请号：US15608349

申请日：2017-05-30

Applicant: Seagate Technology LLC

Inventor： John Charles Duda ,  Ruoxi Yang ,  James Gary Wessel

IPC: G11B11/00 ,  G11B11/105 ,  G11B11/14 ,  G11B11/06 ,  G11B5/60 ,  G11B5/31 ,  G11B5/48 ,  G11B5/00

CPC classification number: G11B11/10547 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6052 ,  G11B5/607 ,  G11B5/6082 ,  G11B5/6088 ,  G11B11/06 ,  G11B11/10532 ,  G11B11/10543 ,  G11B11/12 ,  G11B11/14 ,  G11B2005/0021

Abstract: An apparatus comprises a slider having an air-bearing surface (ABS), a write pole at or near the ABS, and a reader at or near the ABS and connected to a pair of reader bond pads of the slider. A near-field transducer (NFT) is formed on the slider at or near the ABS, and an optical waveguide is formed in the slider and configured to receive light from a laser source. A sensor is situated proximal of the write pole at a location within the slider that receives at least some of the light communicated along the waveguide. The sensor may be electrically coupled to the reader bond pads in parallel with the reader, and configured to generate a signal indicative of output optical power of the laser source.

公开(公告)号：US09524740B2

公开(公告)日：2016-12-20

申请号：US14886249

申请日：2015-10-19

Applicant: Seagate Technology LLC

Inventor： Ruoxi Yang ,  Werner Scholz

IPC: G11B11/00 ,  G11B5/48 ,  G11B5/187 ,  G11B5/00 ,  G11B11/105

CPC classification number: G11B5/4866 ,  G11B5/1871 ,  G11B5/314 ,  G11B5/6088 ,  G11B11/10532 ,  G11B11/10543 ,  G11B11/10554 ,  G11B2005/0021

Abstract: A write head includes a near-field transducer near a media-facing surface of the write head and a waveguide. The waveguide includes a core that overlaps or is co-planer with the near-field transducer at a first region. The core has a second region extending away from the near-field transducer to an energy source. The core has a third region between the first and second regions. The third region has a third crosstrack width that is less than first and second crosstrack widths of the first and second regions.

Abstract translation: 写头包括靠近写入头的面向媒体的表面和波导的近场换能器。 波导包括在第一区域与近场换能器重叠或与其共同配置的核心。 芯具有从近场换能器延伸到能量源的第二区域。 芯具有第一和第二区之间的第三区。 第三区域具有小于第一和第二区域的第一和第二交叉带宽度的第三交叉宽度。

公开(公告)号：US20160307592A1

公开(公告)日：2016-10-20

申请号：US14691127

申请日：2015-04-20

Applicant: Yoshitaka SASAKI ,  Hiroyuki ITO ,  Shigeki TANEMURA ,  Hideo MAMIYA ,  Hironori ARAKI ,  Seiichiro TOMITA

Inventor： Yoshitaka SASAKI ,  Hiroyuki ITO ,  Shigeki TANEMURA ,  Hideo MAMIYA ,  Hironori ARAKI ,  Seiichiro TOMITA

IPC: G11B7/1387 ,  G11B5/012 ,  G11B7/22

CPC classification number: G11B5/012 ,  G11B5/187 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B11/10532 ,  G11B11/10543 ,  G11B2005/0021

Abstract: A plasmon generator includes a main body, and a front protrusion protruding from the main body. The front protrusion has a proximal portion which is a boundary with the main body, and a near-field light generating surface located in the medium facing surface of a magnetic head. The main body has a first inclined surface and a second inclined surface each facing toward the medium facing surface. The first inclined surface and the second inclined surface are at a distance from each other and aligned in the track width direction. The proximal portion of the front protrusion is located between the first inclined surface and the second inclined surface.

Abstract translation: 等离子体发生器包括主体和从主体突出的前突起。 前突起具有与主体边界的近侧部分和位于磁头的介质面向表面中的近场光产生表面。 主体具有第一倾斜表面和第二倾斜表面，每个倾斜表面面向介质相对表面。 第一倾斜面和第二倾斜面彼此间隔一定距离并且在轨道宽度方向上对齐。 前突起的近端部分位于第一倾斜表面和第二倾斜表面之间。

公开(公告)号：US09311952B2

公开(公告)日：2016-04-12

申请号：US14609580

申请日：2015-01-30

Applicant: Western Digital (Fremont), LLC

Inventor： Jiangrong Cao ,  Michael V. Morelli ,  Brad V. Johnson ,  Matthew R. Gibbons

IPC: G11B11/00 ,  G11B7/1387 ,  G11B11/105 ,  G11B5/00

CPC classification number: G11B7/1387 ,  G11B5/314 ,  G11B5/6088 ,  G11B11/10532 ,  G11B2005/0021

Abstract: An apparatus for energy assisted magnetic recording of a storage disk includes a plurality of dielectric waveguide cores configured to receive incident light energy from an energy source and direct the incident light energy to a target, and a near field transducer (NFT) formed at an air bearing surface of a magnetic recording device. The NFT is configured to focus the light energy received from the plurality of waveguide cores and to transmit the focused light energy onto the storage disk surface to generate a heating spot on the storage disk. The NFT includes a plurality of propagating surface plasmon polariton (PSPP) elements configured as plasmonic metal ridges. Each of the PSPP elements has a width approximately equivalent to the width of the heating spot and is disposed above a surface of a single waveguide core in a longitudinal alignment.

公开(公告)号：US07492804B2

公开(公告)日：2009-02-17

申请号：US11312665

申请日：2005-12-20

Applicant: Fumihiro Tawa

Inventor： Fumihiro Tawa

IPC: H01S3/03

CPC classification number: G11B5/314 ,  G11B11/10532 ,  G11B2005/0005 ,  G11B2005/0021

Abstract: A near-field light emitting device includes a deflecting unit that deflects electromagnetic waves propagated through a core toward a base. A propagating unit arranged on the base emits near-field light from an outlet. By providing a magnetic head on a side opposite to the base, a distance between the magnetic head and an intensity center of the near-field light can be minimized. The deflecting unit is formed comparatively thick, therefore, the electromagnetic wave is caused to enter the propagating unit at such an angle that causes a surface-propagating wave to be generated highly efficiently.

Abstract translation: 近场发光器件包括偏转单元，该偏转单元使通过芯传播的电磁波朝向基底偏转。 布置在基座上的传播单元从出口发射近场光。 通过在与基座相对的一侧设置磁头，磁头与近场光的强度中心之间的距离可以最小化。 偏转单元形成得比较厚，因此使得电磁波以能够高效率地产生表面传播波的角度进入传播单元。

公开(公告)号：US20080107377A1

公开(公告)日：2008-05-08

申请号：US11758295

申请日：2007-06-05

Applicant: Eun-hyoung CHO ,  Sung-dong Suh ,  Jin-seung Sohn

Inventor： Eun-hyoung CHO ,  Sung-dong Suh ,  Jin-seung Sohn

IPC: G02B6/26 ,  B05D5/06 ,  G11B5/33 ,  G02B6/02

CPC classification number: G02B6/125 ,  B82Y10/00 ,  G02B6/305 ,  G11B5/314 ,  G11B7/124 ,  G11B7/1387 ,  G11B11/10532 ,  G11B2005/0005 ,  G11B2005/0021

Abstract: A bending waveguide is provided including a core having an input end and an output end, wherein the output end has a near field enhanced aperture structure, and a metal cladding enclosing the core. The core is bent in a curve and a radius of curvature of the curve is a resonance radius at which an intensity of transmitted light with respect to a wavelength of incident light is a maximum. Thus, the direction of the incident light can be changed by a predetermined angle while maintaining the field enhancement characteristic of the conventional near field enhanced aperture without an additional optical element.

Abstract translation: 提供一种弯曲波导，其包括具有输入端和输出端的芯，其中输出端具有近场增强的孔结构，以及包围芯的金属包层。 芯部曲线弯曲，曲线的曲率半径是透射光相对于入射光的波长的最大值的共振半径。 因此，入射光的方向可以改变预定角度，同时保持常规近场增强光圈的场增强特性而不需要额外的光学元件。

公开(公告)号：US20070183298A1

公开(公告)日：2007-08-09

申请号：US11736288

申请日：2007-04-17

Applicant: Kimihiro SAITO ,  Tsutomu Ishimoto

Inventor： Kimihiro SAITO ,  Tsutomu Ishimoto

IPC: G11B7/00

CPC classification number: G11B7/1353 ,  G02B27/283 ,  G11B7/09 ,  G11B7/1356 ,  G11B7/1381 ,  G11B7/1387 ,  G11B11/10532 ,  G11B11/10576 ,  G11B2007/13727

Abstract: An optical pickup device and an optical recording and reproducing apparatus are suitable for use with a near-field optical recording and reproducing system. An optical pickup device comprises an objective lens composed of a solid immersion lens (SIL) the objective lens having a numerical aperture greater than 1, a beam splitter configured to reflect both of a p-polarized light component and an s-polarized light component of reflected lights from an optical recording medium when the optical pickup device irradiates the optical recording medium with a bundle of rays in a predetermined polarized state from a light source through the objective lens, a divider configured to divide incident light into a p-polarized light component and an s-polarized light component reflected by the beam splitter, and a photo-detector configured to separately detect the p-polarized light component and the s-polarized light component divided by the divider.

Abstract translation: 光学拾取装置和光学记录和再现装置适用于近场光学记录和再现系统。 一种光学拾取装置包括由数字孔径大于1的物镜的固体浸没透镜（SIL）构成的物镜，被配置为反射p偏振光分量和S偏振光分量 当光学拾取装置通过物镜从光源以预定偏振状态的光束照射光学记录介质时，来自光学记录介质的反射光;分配器，其将入射光分为p偏振光分量 以及由分束器反射的s偏振光分量，以及光检测器，被配置为分别检测由分频器分压的p偏振光分量和s偏振光分量。

公开(公告)号：US07239599B2

公开(公告)日：2007-07-03

申请号：US11057989

申请日：2005-02-15

Applicant: Fumihiro Tawa ,  Shinya Hasegawa

Inventor： Fumihiro Tawa ,  Shinya Hasegawa

IPC: G11B7/00

CPC classification number: G11B5/127 ,  G11B11/10532 ,  G11B2005/0005 ,  G11B2005/0021

Abstract: A light irradiation head of the present invention includes: a propagation body having a tapered two dimensional shape axially symmetrical to a predetermined symmetrical axis, and consisting of a first kind material that propagates electromagnetic fields of light; and a covering body covering the propagation body so as to surround the symmetrical axis, and consisting of a second kind material different from the first kind material. The propagation body further includes: a bottom edge of projecting shape or recessed shape which is present on the symmetrical axis and which is axially symmetrical to the symmetrical axis; a tip edge which is present on the symmetrical axis and which is narrow relative to the bottom edge; and a pair of reflective edges which are present on both sides of the symmetrical axis and whose interval is gradually reduced in the direction from the bottom edge side to the tip edge side.

Abstract translation: 本发明的光照射头包括：具有与预定对称轴轴对称的锥形二维形状的传播体，由传播电磁场的第一种材料构成; 以及覆盖所述传播体以覆盖所述对称轴线的覆盖体，并且由与所述第一种材料不同的第二种材料构成。 传播体还包括：在对称轴上存在并且与对称轴线轴对称的突出形状或凹陷形状的底部边缘; 尖端边缘，其位于对称轴线上并且相对于底部边缘窄; 以及一对反射边缘，其存在于对称轴线的两侧，并且其间隔从底边缘侧到前端边缘侧的方向逐渐减小。

公开(公告)号：US07236433B2

公开(公告)日：2007-06-26

申请号：US10464742

申请日：2003-06-19

Applicant: Hidehiko Kando ,  Harukazu Miyamoto

Inventor： Hidehiko Kando ,  Harukazu Miyamoto

IPC: G11B7/00

CPC classification number: G11B7/1353 ,  G11B7/00456 ,  G11B7/005 ,  G11B7/127 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/24082 ,  G11B7/24085 ,  G11B7/24088 ,  G11B11/10504 ,  G11B11/10532 ,  G11B11/10595

Abstract: A method and apparatus for recording information by irradiating light onto a medium to form a recorded domain, and method and apparatus for reproducing the recorded information are provided. In one example of the method, a plurality of light spots are modulated synchronously and irradiated onto a recording medium so that the plurality of light spots have an overlapped region on the recording medium. Since the profile of the total energy of the plurality of light spots is varied when the intensities of the plurality of light spots are modulated synchronously, it is possible to move the position where the total energy becomes maximum to any position on the optical recording medium. Thus, by moving the maximum point of the total energy of light spots in a cross-track direction, information can be recorded in a wobbled manner.

Abstract translation: 提供了通过将光照射到介质上以形成记录域来记录信息的方法和装置，以及用于再现记录信息的方法和装置。 在该方法的一个示例中，多个光点被同步调制并照射到记录介质上，使得多个光点在记录介质上具有重叠区域。 由于当多个光点的强度被同步调制时，多个光点的总能量的轮廓变化，所以可以将总能量最大的位置移动到光记录介质上的任何位置。 因此，通过在交叉轨道方向移动光点的总能量的最大点，可以以摆动的方式记录信息。