公开(公告)号：JP2006338843A

公开(公告)日：2006-12-14

申请号：JP2005165791

申请日：2005-06-06

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU ,  ITO TATSUMI

IPC: G11B7/135 ,  G02B3/00 ,  G02B13/00

Abstract: PROBLEM TO BE SOLVED: To provide a solid immersion lens with which optical recording and reproducing by a stable near field are possible without allowing dust to stick to a condensing section of the solid immersion lens, an optical pickup device, and optical recording and reproducing device. SOLUTION: The solid immersion lens comprises an upper lens structure and a lower lens structure, in which the upper lens structure has a convex portion having the condensing section and is provided with a skirt portion in this convex portion. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种固体浸没透镜，通过该固体浸没透镜，可以通过稳定的近场进行光学记录和再现，而不会使灰尘粘附到固体浸没透镜的聚光部分，光学拾取装置和光学记录 和再现装置。 解决方案：固体浸没透镜包括上透镜结构和下透镜结构，其中上透镜结构具有具有聚光部的凸部，并且在该凸部中设置有裙部。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2004178652A

公开(公告)日：2004-06-24

申请号：JP2002341378

申请日：2002-11-25

Applicant: Sony Corp ,  ソニー株式会社

Inventor： SAITO KIMIHIRO ,  ISHIMOTO TSUTOMU

IPC: G02B13/00 ,  G02B27/28 ,  G11B7/09 ,  G11B7/135

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

Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup suited to a near-field optical recording/reproducing system, and to provide an optical recording/reproducing device. SOLUTION: This optical pickup device is provided with an objective lens constituted by including a solid immersion lens (SIL) and having a numerical aperture of 1 or more. Luminous flux of a predetermined polarized light state is radiated from a light source through the objective lens to an optical recording medium, the component of a polarized light state orthogonal to the polarization state of a reflected light when the distance between the surface of the optical recording medium and the planar part of the SIL is 0 is detected from the reflected light, and a signal is obtained corresponding to the distance between the surface of the optical recording medium and the planar part of the SIL. For this purpose, the device is provided with: a beam splitter 102 for reflecting both of P and S polarized light components of the light reflected on the optical recording medium; a separating means 110 for separating the P and S polarized light components reflected by the beam splitter; and photodetecting means 120 for individually detecting the P and S polarized light components separated by the separating means. COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：提供适合于近场光记录/再现系统的光学拾取器，并提供光学记录/再现装置。 解决方案：该光学拾取装置设置有包括固体浸没透镜（SIL）并具有1以上的数值孔径的物镜。 预定偏振光状态的光通量从光源通过物镜辐射到光记录介质，当光记录介质的表面之间的距离为偏振状态的偏振态的分量与反射光的偏振状态正交时 并且从反射光检测出SIL的平面部分为0，并且获得与光学记录介质的表面和SIL的平面部分之间的距离相对应的信号。 为此，该装置设置有：分光器102，用于反射光记录介质上反射的光的P和S偏振光分量; 分离装置110，用于分离由分束器反射的P和S偏振光分量; 以及用于分别检测由分离装置分离的P和S偏振光分量的光检测装置120。 版权所有（C）2004，JPO

公开(公告)号：JP2004110340A

公开(公告)日：2004-04-08

申请号：JP2002271091

申请日：2002-09-18

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU

IPC: G06F17/30 ,  G06F19/00 ,  G06Q10/00 ,  G06Q50/00 ,  G06Q50/10 ,  G06F17/60

Abstract: PROBLEM TO BE SOLVED: To provide a information services utilization support system favorable in improving the convenience when a user receives various information services on a network, and to provide a server and programs. SOLUTION: The support system 100 for using information services has an information terminal 10 and a server 20. The data collecting means 12 of the information terminal 10 collects a network environment data, user created data, and user knowledge data, to send to the server 20. Various kinds of data are registered and stored in the personal database section 24 of the server 20 by the control of a database management section 22. The data mining section 26 analyzes the various kinds of data registered in the personal database section 24 and reflects the analysis results in the personal database section 24. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2002319157A

公开(公告)日：2002-10-31

申请号：JP2001120865

申请日：2001-04-19

Applicant: SONY CORP

Inventor： ISHIMOTO TSUTOMU

IPC: G11B7/085 ,  G11B7/09 ,  G11B7/135 ,  G11B7/26

Abstract: PROBLEM TO BE SOLVED: To realize a high density recording by keeping the distance (gap) between the end face of an SIL(solid immersion lens) and an optical disk constant regardless of the rotation speed of the optical disk. SOLUTION: Gap control is performed first by inputting ramp voltage to a piezo element 38 which holds a nonlinear lens 35 and the SIL 36. Thus, the piezo element 38 is extended, the SIL 36 approaches a disk 37. Next, the amount of returning light due to total reflection and a threshold TH are compared. In this case, when the amount of returning light in total reflection is larger than the threshold TH, it is determined as the near-field state is not yet realized, the ramp voltage is continuously inputted to the piezo element 38. On the other hand, when the returning light in total reflection becomes smaller than the threshold TH, it is determined that the near-field state is realized, the input of the ramp voltage is interrupted, the input voltage is held in a step 3. Next, the gap control with interference light is started and the input voltage is finely controlled according to an interference light amount.

公开(公告)号：JP2002319153A

公开(公告)日：2002-10-31

申请号：JP2001120659

申请日：2001-04-19

Applicant: SONY CORP

Inventor： SAITO KIMIHIRO ,  ISHIMOTO TSUTOMU

IPC: G11B7/24 ,  G11B7/09

Abstract: PROBLEM TO BE SOLVED: To obtain a gap error signal for the reproduction signal of a disk and gap control on the basis of one return light beam from an optical recording medium obtained using near field light. SOLUTION: A signal detector 15 receives a totally reflected return light beam from an SIL 14 through a beam splitter 12 and outputs a detection signal according to a light-receiving level. A band separation filter 16 separates and outputs the detection signal from the signal detector 15 for each predetermined frequency band. A reproduction signal being information to be reproduced from an optical disk 10, a gap error signal to be used for gap control and a tracking error signal to be used for the tracking servo control of an optical head, are extracted by a band separation by the band separation filter 16. Since the reproduction signal from the optical disk 10 is a high frequency signal as compared with the gap error signal, one detection signal from the signal detector 15 is separated by the band separation filter 16 to obtain two signals.

公开(公告)号：JP2002319140A

公开(公告)日：2002-10-31

申请号：JP2001120522

申请日：2001-04-19

Applicant: SONY CORP

Inventor： ISHIMOTO TSUTOMU ,  SAITO KIMIHIRO

IPC: G11B7/005 ,  G11B7/12 ,  G11B7/24

Abstract: PROBLEM TO BE SOLVED: To reproduce information with an optical information recording medium having no reflection film. SOLUTION: An optical disk 107 has a transparent projecting and recessing group (pit pattern) 112A as an information recording layer on the surface of a transparent base plate 112, and a protective film 106 is provided on the pit pattern 112A. It means that a conventional reflection layer is omitted. In a device for reproducing information, an SIL108 is arranged adjacent to the optical disk 107, the projecting and recessing group 112A is detected by using a near- field light. The manufacturing process is simplified, the manufacturing cost is saved, and the manufacturing tact time is shortened by eliminating the reflection layer from the optical disk 107. Further, the reflection layer is not destroyed and a part of the reflection layer is not stuck on the side of the information reproducer because the optical disk 107 dispenses with the reflection layer, and a stable reproducing operation is assured.

公开(公告)号：JP2002117553A

公开(公告)日：2002-04-19

申请号：JP2000306870

申请日：2000-10-05

Applicant: SONY CORP

Inventor： ISHIMOTO TSUTOMU ,  NAKAOKI ARIKATSU

IPC: G02B7/28 ,  G11B7/09 ,  G11B7/125 ,  G11B7/135 ,  G11B7/26 ,  H01S5/0683

Abstract: PROBLEM TO BE SOLVED: To maintain a constant distance between a lens end face (optical means) and a recording medium without depending upon the change in the intensity of irradiation light (laser power) in recording or reproducing of signals by utilizing proximity field light. SOLUTION: The signal recording device has an optical head 14 which is located in proximity to a glass original disk 200 and condenses the proximity field light by a laser beam to the glass original disk 200, an AGC circuit 30 which corrects the quantity of the return light from the optical head 14 according to the intensity of the laser beam emitted from a laser element 1 to record signals to the glass original disk 200 and a focusing controller 20 which controls the distance between the optical head 14 and the glass original disk 200 to be constant according to the quantity S3 of the return light corrected by the AGC circuit 30.

公开(公告)号：JP2011118993A

公开(公告)日：2011-06-16

申请号：JP2009276155

申请日：2009-12-04

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU

IPC: G11B7/095

CPC classification number: G11B7/0953 ,  G11B7/00453 ,  G11B7/0065 ,  G11B7/00781 ,  G11B7/0938 ,  G11B7/24038 ,  G11B7/24044 ,  G11B2007/0009

Abstract: PROBLEM TO BE SOLVED: To properly correct displacement of an information recording position caused by disk eccentricity, when first light for recording information and second light for controlling the information recording position are applied via a common objective lens, focus servo control of the objective lens is performed to focus the second light on a reflection film formed on an optical disk recording medium, an information recording position (focus position) by the first light is set (adjusted) by changing collimation of the first light made incident on the objective lens, and the tracking servo control of the objective lens is performed so that the focus position of a second laser beam is along a position guide formed on the reflection film (reference surface) of the optical disk recording medium. SOLUTION: An estimated eccentricity is acquired for each rotational angle in a circumference of a disk 1, and displacement of an information recording position in the tracking direction of the first light is corrected based on information on the acquired estimated eccentricity. Thus, track pitch is reduced to achieve large recording capacity. Detaching of the disk is permitted, thereby improving convenience. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题为了正确地校正由盘偏心引起的信息记录位置的位移，当用于记录信息的第一光和用于控制信息记录位置的第二光经由公共物镜施加时，聚焦伺服控制 执行物镜以将第二光聚焦在形成在光盘记录介质上的反射膜上，通过改变入射到物镜上的第一光的准直来设定（调整）通过第一光的信息记录位置（聚焦位置） 透镜，并且执行物镜的跟踪伺服控制，使得第二激光束的聚焦位置沿着形成在光盘记录介质的反射膜（参考表面）上的位置引导件。 解决方案：对于盘1的圆周中的每个旋转角度获得估计的偏心度，并且基于获取的估计的偏心率的信息来校正第一光的跟踪方向上的信息记录位置的位移。 因此，减小轨道间距以实现大的记录容量。 允许拆卸磁盘，从而提高方便性。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2009170012A

公开(公告)日：2009-07-30

申请号：JP2008004971

申请日：2008-01-11

Applicant: Sony Corp ,  ソニー株式会社

Inventor： NAKAOKI ARIKATSU ,  ISHIMOTO TSUTOMU ,  KIN YOSHITOSHI

IPC: G11B23/033

Abstract: PROBLEM TO BE SOLVED: To provide a disk cartridge allowing recording and reproduction to a thin plate-like disk using near-field light and suppressing adhesion of dust on a disk surface.
SOLUTION: The disk cartridge includes the thin plate-like disk 2 in which at least either recording or reproduction is performed by a near-field optical system 30 and a cartridge 1 accommodating the thin plate-like disk 2. The cartridge 1 includes an opening 3 allowing the movement of the near-field optical system 30 at a side facing a recording/reproducing surface 2r of the thin plate-like disk 2, a shutter 4 allowing opening and closing of the opening 3, and an air hole 5 at a side opposite to the side where the shutter 4 is provided.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种盘盒，其允许使用近场光记录和再现到薄板状盘并且抑制灰尘在盘表面上的粘附。 解决方案：盘盒包括薄板状盘2，其中由近场光学系统30和容纳薄板状盘2的盒1执行至少一次记录或再现。盒1 包括允许近场光学系统30在面对薄板状盘2的记录/再现表面2r的一侧的移动的开口3，允许打开和关闭开口3的活门4和空气孔 在与设置快门4的一侧相对的一侧。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2009070468A

公开(公告)日：2009-04-02

申请号：JP2007237138

申请日：2007-09-12

Applicant: Sony Corp ,  ソニー株式会社

Inventor： ISHIMOTO TSUTOMU

IPC: G11B7/095 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To control a gap between an optical recording medium and a condensing optical system with a simpler device configuration as compared to when using a servo repeatedly. SOLUTION: The quantity of total-reflection return light from an optical recording medium is detected by a photodetector, and a push-pull signal Tpp of a traveling direction relative to the optical recording medium is feed-forwarded to a gap error signal obtained based on the detected signal to generate a gap servo signal GES. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：与重复使用伺服系统相比，以更简单的装置配置来控制光学记录介质和聚光系统之间的间隙。 解决方案：通过光电检测器检测来自光记录介质的全反射返回光的量，相对于光记录介质的行进方向的推挽信号Tpp被馈送到间隙误差信号 基于检测信号得到间隙伺服信号GES。 版权所有（C）2009，JPO＆INPIT