公开(公告)号：US06671246B1

公开(公告)日：2003-12-30

申请号：US09559860

申请日：2000-04-27

Applicant: Daisuke Matsuo

Inventor： Daisuke Matsuo

IPC: G11B700

CPC classification number: G11B7/1387 ,  G11B7/121 ,  G11B7/1374 ,  G11B2007/13727

Abstract: An optical pickup is provided which includes a light source, an optical system for converging a laser beam emitted from the light source, and an optical element having a function of increasing a numerical aperture of the optical system, wherein recording and/or reproducing information on a recording medium is performed by using the laser beam from the light source while the optical element is brought in contact with or in close to the recording medium, and the optical element has a contamination-preventing structure.

Abstract translation: 提供一种光拾取器，其包括光源，用于会聚从光源发射的激光束的光学系统和具有增加光学系统的数值孔径的功能的光学元件，其中记录和/或再现信息 在光学元件与记录介质接触或靠近记录介质的同时使用来自光源的激光进行记录介质，并且光学元件具有防污染结构。

公开(公告)号：US06661745B1

公开(公告)日：2003-12-09

申请号：US09537235

申请日：2000-03-28

Applicant: Junji Tominaga ,  Nobufumi Atoda ,  Hiroshi Fuji ,  Hiroyuki Katayama ,  Kenji Ohta

Inventor： Junji Tominaga ,  Nobufumi Atoda ,  Hiroshi Fuji ,  Hiroyuki Katayama ,  Kenji Ohta

IPC: G11B700

CPC classification number: B82Y10/00 ,  G11B7/1387 ,  G11B7/24065 ,  G11B11/10584 ,  G11B11/10586

Abstract: An optical device and a recording medium are provided with a recording layer for recording information by radiation of light, and a mask layer which is formed closely to the recording layer, reduces its transmittance of light due to light or heat, and transmits light to the recording layer by using a near-field effect. An optical reproducing and recording method includes the steps of: emitting a laser beam onto the mask layer, generating a near field around an area of the mask layer that has transmittance being reduced by the laser beam, and reproducing or recording optical information in the recording layer by interaction between the near field and the recording layer. With this method, it is possible to provide the optical device, recording medium, and optical reproducing and recording method that can realize a high S/N ratio upon reproducing and recording and that can readily form a recording mark.

Abstract translation: 光学器件和记录介质设置有用于通过照射光来记录信息的记录层和与记录层紧密相邻形成的掩模层，减少其由于光或热导致的光的透射率，并将光透射到 记录层通过使用近场效应。 光学再现和记录方法包括以下步骤：将激光束发射到掩模层上，产生围绕掩模层的区域的近场，该区域具有通过激光束减少的透射率，以及在记录中再现或记录光学信息 通过近场和记录层之间的相互作用来形成层。 利用这种方法，可以提供在再现和记录时可以实现高S / N比并且可以容易地形成记录标记的光学设备，记录介质和光学再现和记录方法。

公开(公告)号：US20030206513A1

公开(公告)日：2003-11-06

申请号：US09833640

申请日：2001-04-13

Inventor： Kenjiro Watanabe ,  Hitoshi Tamada

IPC: G11B007/135

CPC classification number: G11B7/005 ,  G01Q60/22 ,  G01Q80/00 ,  G11B7/122 ,  G11B7/1356 ,  G11B7/1387 ,  G11B11/10543 ,  G11B2007/13725

Abstract: An optical element is provided in which in a lens surface substantially perpendicular to the optical axis of the lens, there is embedded a conductive member whose diameter or width is smaller than the diameter of an optical spot incident upon the lens surface. The optical element is used in an optical head which reads a signal by illuminating an optical recording medium with a reading light. The basic principle of this optical head is such that a subtle phase change of the light is detected which is caused by the electromagnetic interaction between the conductive member embedded in the optical element and a conductive material on the surface of the optical recording medium. For example, the interference between return light beams from the optical recording medium is used to read a signal. Alternately,.a high frequency current is supplied to the conductive material and a signal synchronous with the high frequency is extracted to detect the interaction between the conductive material on the optical recording medium and the conductive member, to thereby read a signal recorded in the optical recording medium.

Abstract translation: 提供了一种光学元件，其中在与透镜的光轴基本垂直的透镜表面中嵌有直径或宽度小于入射在透镜表面上的光斑的直径的导电构件。 光学元件用于通过用读取光照射光学记录介质来读取信号的光学头。 该光头的基本原理在于，检测出由嵌入在光学元件中的导电部件与光记录介质表面的导电材料之间的电磁相互作用引起的光的微小相变。 例如，使用来自光记录介质的返回光束之间的干涉来读取信号。 或者，将高频电流提供给导电材料，并且提取与高频同步的信号以检测光学记录介质上的导电材料与导电构件之间的相互作用，从而读取记录在光学器件中的信号 记录介质。

公开(公告)号：US06643068B2

公开(公告)日：2003-11-04

申请号：US10189314

申请日：2002-07-01

Applicant: Michael J. Mandella

Inventor： Michael J. Mandella

IPC: G02B2710

CPC classification number: G01Q60/22 ,  G02B21/02 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/1387

Abstract: An ellipsoidal solid immersion lens (ESIL) for use as a collimator for a waveguide. The ESIL has a refractive index n, an ellipsoidal surface portion defining a geometrical ellipsoid with geometrical foci F1, F2 along a major axis of length M. The ESIL has an attachment surface portion for joining to the waveguide. The attachment surface portion passes near or through the second geometrical focus F2. The geometrical foci F1, F2 are separated by a distance S=M/n, such that a substantially collimated light beam exhibiting a Gaussian type intensity profile propagating along the major axis M and entering the ESIL through the ellipsoidal surface portion converges to a Gaussian beam waist substantially at the second geometrical focus F2. The ESIL, or more generally any SIL, may be incorporated into a collimated array of lenses within a monolithic body having a substrate with a substantially uniform index of refraction and a pedestal comprising an attachment surface portion for attaching waveguides to the SIL.

公开(公告)号：US06633513B1

公开(公告)日：2003-10-14

申请号：US09599500

申请日：2000-06-23

Applicant: Woon-bae Kim ,  Byoung-chan Lee ,  Hyung-gae Shin ,  Cheol-sung Yeon ,  Sang-hun Lee ,  Jong-woo Shin

Inventor： Woon-bae Kim ,  Byoung-chan Lee ,  Hyung-gae Shin ,  Cheol-sung Yeon ,  Sang-hun Lee ,  Jong-woo Shin

IPC: G11B1100

CPC classification number: G11B7/1387 ,  G11B5/17 ,  G11B5/313 ,  G11B11/10534 ,  G11B11/10554 ,  G11B11/1058 ,  G11B2007/13725

Abstract: A magneto-optical head for magneto-optical writing and reading systems having an improved construction for a field modulating coil and a miniature objective lens, and a method of manufacturing the magneto-optical head. The magneto-optical head is mounted at the end of a slide-arm movable over a magneto-optical recording medium by hydrodynamics and includes: a lens mounted at the end of the slide-arm, for focusing incident light to form a light spot on the magneto-optical recording medium; a coil member including at least two stacked coil layers, and an insulating layer interposed between adjacent coil layers for electrically insulating the adjacent coil layers from one another, the stacked coil layers being planar coils with a spiral structure and having electrical contacts for electrical connection therebetween; and a connection member interposed between the lens and the coil member, for connecting the coil member to one side of the lens, facing the magneto-optical recording medium, and for electrically connecting the coil layers to an external power supply. The coil member is manufactured using a semiconductor fabrication process.

Abstract translation: 一种用于磁光写入和读取系统的磁光头，其具有用于场调制线圈和微型物镜的改进的结构，以及制造磁光头的方法。 磁光头安装在滑动臂的端部，通过流体动力学在磁光记录介质上移动，并且包括：安装在滑臂的端部的透镜，用于聚焦入射光以形成光点 磁光记录介质; 包括至少两个堆叠的线圈层的线圈构件和插入相邻线圈层之间的用于将相邻线圈层彼此电绝缘的绝缘层，所述堆叠线圈层是具有螺旋结构的平面线圈，并且具有用于电连接的电触点 ; 以及插入在透镜和线圈构件之间的连接构件，用于将线圈构件连接到透镜的一侧，面对磁光记录介质，并将线圈层电连接到外部电源。 线圈构件使用半导体制造工艺制造

公开(公告)号：US06633439B1

公开(公告)日：2003-10-14

申请号：US09714007

申请日：2000-11-16

Applicant: Baoxi Xu ,  Minyu Liu ,  Tow Chong Chong ,  Gaoqiang Yuan

Inventor： Baoxi Xu ,  Minyu Liu ,  Tow Chong Chong ,  Gaoqiang Yuan

IPC: G02B1318

CPC classification number: G11B7/1374 ,  G11B7/122 ,  G11B7/1387 ,  G11B11/10532 ,  G11B11/10554 ,  G11B11/1058 ,  G11B2007/13727

Abstract: The present invention provides an improved optical reading and recording system utilizing optical system employing an aspherical solid immersion lens (SIL). The improved optical system has an aspherical SIL between an objective lens and the recording media. The aspherical SIL reduces the focused electromagnetic radiation beam spot size by providing an increased numeric aperture (NA) of the optical system. The aspherical surface of the SIL provide greater manufacturing and operating tolerances between the objective lens and the aspherical SIL. Greater manufacturing tolerances provide an easier to manufacture optical system. Increased ease of manufacture reduces the cost of optical systems.

Abstract translation: 本发明提供了利用采用非球面固体浸没透镜（SIL）的光学系统的改进的光学读取和记录系统。 改进的光学系统在物镜和记录介质之间具有非球面SIL。 非球面SIL通过提供光学系统的增加的数值孔径（NA）来减少聚焦的电磁辐射束斑点尺寸。 SIL的非球面表面在物镜和非球面SIL之间提供更大的制造和工作公差。 更大的制造公差提供了更容易制造的光学系统。 增加制造的便利性降低光学系统的成本。

公开(公告)号：US06631227B2

公开(公告)日：2003-10-07

申请号：US09833144

申请日：2001-04-11

Applicant: Nobuyuki Kasama ,  Manabu Oumi ,  Yasuyuki Mitsuoka ,  Hidetaka Maeda ,  Kenji Kato ,  Takashi Niwa

Inventor： Nobuyuki Kasama ,  Manabu Oumi ,  Yasuyuki Mitsuoka ,  Hidetaka Maeda ,  Kenji Kato ,  Takashi Niwa

IPC: G02B634

CPC classification number: G11B7/0932 ,  B82Y10/00 ,  G02B6/34 ,  G02B2006/12104 ,  G02B2006/12147 ,  G02B2006/12173 ,  G02B2006/12176 ,  G11B7/122 ,  G11B7/124 ,  G11B7/1353 ,  G11B7/1359 ,  G11B7/1387 ,  G11B7/22

Abstract: An information recording and reproducing apparatus for at least one of recording and reproducing information on a recording medium utilizing near-field light has a suspension arm and a near-field light head mounted on the suspension arm. The near-field light head has a minute aperture, an optical waveguide for propagating light from a light source, and a reflection film for reflecting the light propagated by the optical waveguide and for irradiating the reflected light to the minute aperture to generate near-field light at the minute aperture for interaction with a recording medium. A light guiding structure guides light from the light source to the optical waveguide of the near-field light head.

Abstract translation: 在利用近场光的记录介质上记录和再现信息中的至少一个的信息记录和再现装置具有安装在悬架臂上的悬架臂和近场光头。 近场光头具有微小孔径，用于传播来自光源的光的光波导和用于反射由光波导传播的光的反射膜，并用于将反射光照射到微孔以产生近场 在与记录介质相互作用的微小孔处的光。 导光结构将来自光源的光引导到近场光头的光波导。

公开(公告)号：US20030185135A1

公开(公告)日：2003-10-02

申请号：US10386681

申请日：2003-03-13

Applicant: NEC CORPORATION

Inventor： Junichi Fujikata ,  Hitoshi Yokota ,  Tsutomu Ishi

IPC: G11B007/135

CPC classification number: B82Y10/00 ,  G11B7/1387

Abstract: A optical device including conductive films having a first and second surfaces, one hole, surface specific shapes periodically, and a layer inserted as an intermediate layer between the first and the second surface of conductive films. The intermediate layer has the effect for improving surface roughness of the surface of conductive film. A light incident upon one surface enhances an intensity transmitted though the hole.

Abstract translation: 一种光学器件，包括具有第一表面和第二表面的导电膜，一个孔，周期性的表面特定形状以及在导电膜的第一和第二表面之间作为中间层插入的层。 中间层具有改善导电膜表面粗糙度的效果。 在一个表面上入射的光增强了穿过孔传播的强度。

公开(公告)号：US20030184903A1

公开(公告)日：2003-10-02

申请号：US10402880

申请日：2003-03-28

Applicant: Seagate Technology LLC

Inventor： William Albert Challener

IPC: G11B005/02 ,  G11B011/00

CPC classification number: B82Y20/00 ,  B82Y10/00 ,  G02B6/12 ,  G03F7/70383 ,  G11B5/127 ,  G11B5/6088 ,  G11B7/1387 ,  G11B11/10536 ,  G11B2005/0021

Abstract: A ridge waveguide having a recessed ridge forming an isolated tip at a terminal end of the waveguide's aperture efficiently couples light into a spot adjacent to the tip in a medium below the terminal end of the waveguide which is significantly smaller than the light's wavelength. The waveguide is used to heat a recording medium via the small spot for heat assisted recording or to pattern substrates by photolithography with line width exposures that are significantly smaller than the wavelength of light. The body of the waveguide may also be recessed away from the medium in an area surrounding the waveguide's aperture to further confine the energy emerging from the waveguide to the small spot adjacent the tip in the medium.

Abstract translation: 具有在波导孔的末端形成孤立尖端的凹脊的脊形波导在波导的终端下方的介质中有效地将光耦合到与尖端相邻的点，其明显小于光的波长。 该波导用于通过用于热辅助记录的小点加热记录介质，或者通过光学曝光对图案基板进行加热，线宽度曝光明显小于光的波长。 波导体还可以在围绕波导孔的区域中从介质凹入，以进一步将从波导引出的能量限制在介质中与尖端相邻的小点处。

公开(公告)号：US20030141444A1

公开(公告)日：2003-07-31

申请号：US10339074

申请日：2003-01-09

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Yasuyuki Mitsuoka ,  Norio Chiba ,  Nobuyuki Kasama ,  Takashi Niwa ,  Kunio Nakajima

IPC: H01J003/14

CPC classification number: G01Q60/22 ,  G01Q70/06 ,  G11B7/128 ,  G11B7/1353 ,  G11B7/1362 ,  G11B7/1374 ,  G11B7/1387 ,  G11B7/22 ,  G11B2007/13727 ,  Y10S977/862

Abstract: The present invention has an object, in a near-field optical probe having a microscopic aperture to generate and/or scatter a near field, to obtain a near-field optical probe easy to be made in an array which increases the intensity of a near field to be generated and/or scattered and is adapted for use as an optical memory head. This near-field optical probe is arranged with a planar lens having microscopic lens on a flat surface substrate having an inverted conical or pyramidal hole formed therethrough such that its apex is made as the microscopic aperture, wherein a light source is further arranged thereon to introduce light to the planar lens. Because the arrangement is made such that the planar lens has a focal point positioned at the microscopic aperture, the light given by the light source can be efficiently collected to the microscopic aperture. Also, the above structure can be arrayed and mass produced using a silicon process, thus being adapted for use as an optical memory head.

Abstract translation: 本发明的目的是在具有微小孔径的近场光学探针中产生和/或散射近场，以获得容易制成阵列的近场光学探针，其增加了近场强度 场被生成和/或散射并适于用作光学记忆头。 该近场光学探针被布置成具有微透镜的平面透镜在平面表面基底上，该平面透镜具有穿过其形成的倒锥形或金字塔形孔，使得其顶点形成为微小孔，其中光源还被布置在其上以引入 光到平面透镜。 由于平面透镜具有位于微小孔的焦点的布置，所以可以将由光源所给出的光有效地收集到微孔中。 此外，上述结构可以使用硅工艺排列并批量生产，因此适合用作光学记忆头。