公开(公告)号：US06809908B1

公开(公告)日：2004-10-26

申请号：US10069668

申请日：2002-05-20

Applicant: Kenchi Ito ,  Hideki Saga ,  Hiroaki Nemoto ,  Tomohiro Okada

Inventor： Kenchi Ito ,  Hideki Saga ,  Hiroaki Nemoto ,  Tomohiro Okada

IPC: G11B539

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G11B5/127 ,  G11B5/1278 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3967 ,  G11B7/1387 ,  G11B11/10534 ,  G11B11/10554 ,  G11B11/1058 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/001 ,  G11B2005/0021

Abstract: A light induction type thin film magnetic recording head according to the present invention includes a lower magnetic core (2) formed on a substrate, an upper magnetic core (6) whose front end part is connected to the lower magnetic core through a magnetic gap film and whose rear end part is directly connected to the lower magnetic core with a back contact part (11) formed of a magnetic substance, and an insulating layer (3) formed between the upper magnetic core and the lower magnetic core, characterized in that an optically transparent waveguide part (5) whose width is smaller than the width of the upper magnetic core and whose thickness is thinner than the thickness of the upper magnetic core is buried in the upper magnetic core, and a coil (8) which generates magnetic flux in a magnetic circuit composed of the upper magnetic core, lower magnetic core, magnetic gap, and back contact part is arranged around the back contact part.

Abstract translation: 根据本发明的感光型薄膜磁记录头包括形成在基板上的下磁芯（2），上磁芯（6），其前端部通过磁隙膜连接到下磁芯 并且其后端部由与磁性物质形成的背接触部（11）直接连接到下磁芯，以及形成在上磁芯与下磁芯之间的绝缘层（3），其特征在于， 光学透明的波导部分（5）的宽度小于上磁芯的宽度，其厚度比上磁芯的厚度薄，埋在上磁芯中，并且产生磁通量的线圈（8） 在由上磁芯，下磁芯，磁隙和后接触部构成的磁路中，配置在后接触部的周围。

公开(公告)号：US06781950B2

公开(公告)日：2004-08-24

申请号：US09782274

申请日：2001-02-14

Applicant: Akio Mishima ,  Toru Katakura

Inventor： Akio Mishima ,  Toru Katakura

IPC: G11B700

CPC classification number: G11B11/10554 ,  G11B7/122 ,  G11B7/1384 ,  G11B7/1387 ,  G11B7/22 ,  G11B11/10534 ,  G11B11/1058 ,  Y10T29/49032 ,  Y10T29/49034 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49046 ,  Y10T29/49798

Abstract: A slider for an optical head for signal recording and/or reproduction on or from a recording medium which, even if reduced in size, assures optimum signal recording and/or reproduction on or from a recording medium, and which may be produced readily. The slider for the optical head includes a slider member for floating and running over a recording medium during recording and/or reproduction of information signals for the recording medium, an optical lens bonded to the slider member and a magnetic field generating unit provided on a surface of the slider member carrying the optical lens facing the recording medium. The slider member is formed with a terminal groove opened in a its surface facing the recording medium and in its lateral surface, with an electrically conductive material being charged in the terminal groove. The electrically conductive material charged forms a terminal electrically connected to the magnetic field generating unit. One end of the terminal faces to outside of the slider member from a lateral surface of the slider member.

Abstract translation: 用于在记录介质上或从记录介质上进行信号记录和/或再现的光学头的滑动器，即使减小了尺寸，确保了在记录介质上或从记录介质上的最佳信号记录和/或再现，并且可容易地制造。 用于光学头的滑块包括用于在用于记录介质的信息信号的记录和/或再现期间浮动并在记录介质上运行的滑块构件，结合到滑块构件的光学透镜和设置在滑动构件上的磁场产生单元 所述滑动构件承载面向所述记录介质的所述光学透镜。 滑块构件形成有在面向记录介质的表面上开口的端子槽，并且在其侧表面中，导电材料被充入端子槽中。 充电的导电材料形成电连接到磁场产生单元的端子。 端子的一端从滑动构件的侧面面向滑动构件的外侧。

公开(公告)号：US20040145995A1

公开(公告)日：2004-07-29

申请号：US10714866

申请日：2003-11-18

Applicant: Sony Corporation

Inventor： Kimihiro Saito ,  Tsutomu Ishimoto

IPC: G11B007/135

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 102 for reflecting 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 to detect a component in the polarized state perpendicular to the polarized state of reflected light obtained when a distance between the surface of this optical recording medium and the flat surface portion of the solid immersion lens (SIL) is zero to produce a signal corresponding to the distance between the surface of the optical recording medium and the flat surface portion of the solid immersion lens, a dividing means 110 for dividing incident light into a p-polarized light component and an s-polarized light component reflected by the beam splitter 102 and a photo-detecting means 120 for separately detecting the p-polarized light component and the s-polarized light component divided by the dividing means 110.

公开(公告)号：US06738338B1

公开(公告)日：2004-05-18

申请号：US09527093

申请日：2000-03-16

Applicant: Hidetaka Maeda ,  Takashi Niwa ,  Kenji Kato ,  Susumu Ichihara ,  Norio Chiba ,  Yasuyuki Mitsuoka ,  Manabu Oumi ,  Nobuyuki Kasama

Inventor： Hidetaka Maeda ,  Takashi Niwa ,  Kenji Kato ,  Susumu Ichihara ,  Norio Chiba ,  Yasuyuki Mitsuoka ,  Manabu Oumi ,  Nobuyuki Kasama

IPC: G11B700

CPC classification number: G11B7/1387 ,  G11B7/22

Abstract: There is disclosed a near-field optical head having an microscopic aperture whose size can be varied. The optical head comprises a substrate of silicon. A hole in the form of an inverted cone is formed in the substrate. The top portion of this hole forms the microscopic aperture. A support portion for supporting an actuator is formed on the substrate. The actuator holds a light-blocking film in such a way that the light-blocking film stays in the hole and that the bottom surface of the light-blocking film is flush with the bottom surface of the microscopic aperture. The light-blocking film is moved by the actuator to change the aperture to desired size.

Abstract translation: 公开了一种具有微小孔径的近场光学头，其尺寸可以变化。 光头包括硅衬底。 在基板上形成倒锥形的孔。 该孔的顶部形成微观孔。 在基板上形成用于支撑致动器的支撑部。 致动器以如下方式保持遮光膜，使得遮光膜停留在孔中，并且遮光膜的底表面与微孔的底表面齐平。 致动器移动遮光膜，将光圈改变为所需尺寸。

公开(公告)号：US06731579B2

公开(公告)日：2004-05-04

申请号：US10124431

申请日：2002-04-18

Applicant: Tsutomu Ishimoto

Inventor： Tsutomu Ishimoto

IPC: G11B700

CPC classification number: B82Y10/00 ,  G11B7/0908 ,  G11B7/121 ,  G11B7/1372 ,  G11B7/1387

Abstract: A signal recording and/or playback apparatus is disclosed wherein, when near field light is used for recording or playback of an optical disk, dust on the optical disk can be removed effectively. After an optical disk is set in position to a turntable in an apparatus body, before gap control or the like is performed, the optical disk is rotated at a suitable speed so that dust sticking to the optical disk is driven away to the outer circumferential side thereby to clean the signal recording surface of the optical disk. Then, the optical disk is stopped once, and gap control for adjusting the distance or gap between an optical head and the optical disk to a distance with which near field light is produced is performed. Thereafter, it is confirmed whether or not the gap control operates normally, and when the gap control operates normally, the optical disk is rotated to start a recording operation or a playback operation of a signal onto or from the optical disk making use of the near field light.

Abstract translation: 公开了一种信号记录和/或播放装置，其中当近场光用于记录或重放光盘时，可以有效地去除光盘上的灰尘。 在将光盘设置在装置主体中的转台的位置之后，在进行间隙控制等之前，以适当的速度旋转光盘，使得粘附到光盘的灰尘被驱动到外周侧 从而清洁光盘的信号记录表面。 然后，光盘停止一次，并且执行用于将光头与光盘之间的距离或间隙调整到产生近场光的距离的间隙控制。 此后，确认间隙控制是否正常工作，并且当间隙控制正常工作时，光盘旋转以开始记录操作或信号的再现操作使用近 场灯

公开(公告)号：US06728194B1

公开(公告)日：2004-04-27

申请号：US09448466

申请日：1999-11-24

Applicant: Futoshi Ishida ,  Seishi Ojima

Inventor： Futoshi Ishida ,  Seishi Ojima

IPC: G11B700

CPC classification number: G11B7/244 ,  G11B7/0903 ,  G11B7/0927 ,  G11B7/0937 ,  G11B7/0938 ,  G11B7/1387 ,  G11B7/24079 ,  G11B7/24085 ,  G11B7/245 ,  G11B7/268

Abstract: An optical recording medium including a substrate, an information recording region arranged on the substrate and capable of bearing information being readable with predetermined light, and a tracking region arranged on the substrate, having optical characteristics different from those of the information recording region and having substantially no difference in level with respect to the surface of the information recording region. A method of making an optical recording medium, including the steps of forming uniformly a recording layer on a substrate, the recording layer being made of a recording material being reversibly reactive to predetermined light, and causing an irreversible reaction in a partial region of the recording layer without causing a substantial difference in level with respect to the other region of the recording layer. An optical memory device including the foregoing optical recording medium, an exposing device having a head for emitting evanescent light to the optical recording medium, a drive device for driving the head, and a control device for controlling the drive device to perform tracking of the head in accordance with the tracking region.

Abstract translation: 一种光记录介质，包括基板，布置在基板上的信息记录区域，其能够承载具有预定光可读取的信息，以及布置在基板上的跟踪区域，具有与信息记录区域不同的光学特性， 相对于信息记录区域的表面没有水平差异。 一种制造光记录介质的方法，包括以下步骤：在基板上均匀地形成记录层，所述记录层由与预定光可逆地反应的记录材料制成，并且在记录的部分区域中引起不可逆反应 层，而不会导致相对于记录层的其他区域的实质的水平差异。 一种包括上述光学记录介质的光学存储器件，具有用于向光学记录介质发射ev逝光的头部的曝光装置，用于驱动头部的驱动装置，以及用于控制驱动装置执行头部跟踪的控制装置 按照跟踪区域。

公开(公告)号：US06721258B1

公开(公告)日：2004-04-13

申请号：US10018566

申请日：2001-12-20

Applicant: Nobuyuki Hashimoto

Inventor： Nobuyuki Hashimoto

IPC: G11B700

CPC classification number: B82Y10/00 ,  G02B27/286 ,  G02B27/58 ,  G11B7/00 ,  G11B7/1369 ,  G11B7/1381 ,  G11B7/1387 ,  G11B2007/13727

Abstract: The present invention is directed to the provision of an optical device that can easily eliminate only side lobes or side lobe components from a super-resolution optical spot. The optical device comprises: blocking means for blocking a portion of first linearly polarized light; a polarizing beam splitter for transmitting the first linearly polarized light therethrough, and for reflecting second linearly polarized light whose plane is oriented at right angles relative to the first linearly polarized light; a quarter-wave plate for converting the first linearly polarized light into first circularly polarized light and the first circularly polarized light into the first linearly polarized light, while converting second circularly polarized light, whose plane is rotating in a direction opposite to the first circularly polarized light, into the second linearly polarized light; a first converging lens for forming an optical spot on the optical disk, and for allowing reflected light caused by the optical spot by reflection from the optical disk to pass therethrough in a backward direction; and a second converging lens for focusing a beam of light reflected by the polarizing beam splitter onto a light detector.

Abstract translation: 本发明涉及提供一种光学装置，其可以容易地从超分辨率光点消除旁瓣或旁瓣分量。 光学装置包括：用于阻挡第一线性偏振光的一部分的阻挡装置; 偏振分束器，用于透射第一线偏振光，并且用于反射相对于第一线性偏振光直线定向的第二直线偏振光; 用于将第一直线偏振光转换成第一圆偏振光的第四波长板和第一圆偏振光转换成第一线偏振光，同时转换第二圆偏振光，其平面沿与第一圆偏振光相反的方向旋转 光，进入第二线偏振光; 用于在光盘上形成光点的第一会聚透镜，并且用于允许来自光盘的反射引起的由光点引起的反射光沿反向通过; 以及用于将由偏振分束器反射的光束聚焦到光检测器上的第二会聚透镜。

公开(公告)号：US06687200B1

公开(公告)日：2004-02-03

申请号：US09598699

申请日：2000-06-21

Applicant: Takao Kobayashi

Inventor： Takao Kobayashi

IPC: G11B7095

CPC classification number: G11B7/007 ,  G11B7/0045 ,  G11B7/0901 ,  G11B7/1384 ,  G11B7/1387

Abstract: A recording/reproducing apparatus is configured to displace near-field light for recording or reproduction and tracking illumination light toward an outer periphery of a recording pit when an off-track state toward the outer periphery occurs. The amount of reflected tracking illumination light increases since the reflectivity of an outer peripheral track band is higher than that of a recording region and that of an inner peripheral track band. The near-field light and the tracking illumination light are displaced toward an inner periphery of a recording pit when an off-track state toward the inner periphery occurs. The amount of reflected tracking illumination light decreases since the reflectivity of the inner peripheral track band is lower than that of the recording region and that of the outer peripheral track band. The single tracking illumination light is required for tracking control. The recording/reproducing apparatus can perform high-accuracy tracking control, is easy to manufacture, and is reduced in size.

Abstract translation: 记录/再现装置被配置为当朝向外周发生偏离轨迹状态时，将用于记录或再现的近场光移位到记录凹坑的外周边并跟踪照明光。 由于外围轨道带的反射率高于记录区域和内部周边轨道带的反射率，反射跟踪照明光的量增加。 当向内周的偏离轨迹状态发生时，近场光和跟踪照明光朝着记录凹坑的内周移位。 反射跟踪照明光的量减小，因为内周磁道带的反射率低于记录区域和外周磁道带的反射率。 跟踪控制需要单次跟踪照明灯。 记录/再现装置可执行高精度跟踪控制，易于制造并且尺寸减小。

公开(公告)号：US06680900B1

公开(公告)日：2004-01-20

申请号：US09585428

申请日：2000-06-02

Applicant: Junichi Takahashi ,  Motonobu Kourogi ,  Takashi Yatsui ,  Motoichi Ohtsu

Inventor： Junichi Takahashi ,  Motonobu Kourogi ,  Takashi Yatsui ,  Motoichi Ohtsu

IPC: G11B700

CPC classification number: G11B7/1387 ,  G01Q60/22 ,  G11B7/122 ,  G11B7/22 ,  G11B21/21 ,  Y10T29/49002 ,  Y10T29/4902 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49046 ,  Y10T29/49048

Abstract: An optical-pickup slider is characterized in that a light-transmitting-property substrate is bonded to a surface of a layer having a tapered through hole, on which surface a larger opening of the tapered through hole exists. Thereby, it is possible to prevent the layer having an aperture from being destroyed. A method of manufacturing the optical-pickup slider comprises the steps of a) making a tapered through hole in a layer layered on a first substrate and having a thickness smaller than that of the first substrate; and, after bonding a light-transmitting-property substrate to a surface of the layer, removing the first substrate so as to expose an aperture at a tip of the tapered through hole.

公开(公告)号：US20040001421A1

公开(公告)日：2004-01-01

申请号：US10356869

申请日：2003-02-03

Applicant: FUJITSU LIMITED

Inventor： Fumihiro Tawa ,  Shinya Hasegawa

IPC: G11B007/135

CPC classification number: B82Y10/00 ,  G11B5/012 ,  G11B5/127 ,  G11B5/3903 ,  G11B5/488 ,  G11B5/4886 ,  G11B7/1359 ,  G11B7/1387 ,  G11B11/10536 ,  G11B11/10554 ,  G11B2005/0005 ,  G11B2005/0021

Abstract: An optical irradiation head including a trapezoidal prism having a pair of trapezoidal principal surfaces parallel to each other, a rectangular bottom surface, a rectangular top surface parallel to the rectangular bottom surface, and a pair of oblique side surfaces connecting the top surface, the bottom surface, and the principal surfaces, and a cover member for covering the principal surfaces and the oblique side surfaces. The trapezoidal prism is formed of a first material, and the cover member is formed of a second material. Linearly polarized light having a polarization direction perpendicular to the principal surfaces is incident on the bottom surface. For example, the first material is a dielectric transparent to the incident light, and the second material is metal such as Al, Au, or Ag.

Abstract translation: 一种光学照射头，包括具有彼此平行的一对梯形主表面的梯形棱镜，矩形底表面，平行于矩形底面的矩形顶表面和连接顶表面，底部的一对倾斜侧表面 表面和主表面，以及用于覆盖主表面和倾斜侧表面的盖构件。 梯形棱镜由第一材料形成，盖构件由第二材料形成。 具有垂直于主表面的偏振方向的线偏振光入射到底面。 例如，第一材料是对入射光透明的电介质，第二材料是诸如Al，Au或Ag的金属。