公开(公告)号：JP2004145985A

公开(公告)日：2004-05-20

申请号：JP2002310202

申请日：2002-10-24

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KIJIMA KOICHIRO

IPC: G02F1/13 ,  G11B7/125 ,  G11B7/135

CPC classification number: G11B7/1369

Abstract: PROBLEM TO BE SOLVED: To provide a phase adjustment liquid crystal device which can stabilize optical characteristics and an electric resistance value of a transparent conductive film. SOLUTION: The phase adjustment liquid crystal device is used for an optical recording or reproducing apparatus which performs recording or reproducing of data to be recorded in an record medium by condensing a laser beam to the recording medium. In the phase adjustment liquid crystal device which adjusts the phase distribution of the condensing laser beam by penetrating the laser beam into the liquid crystal device which can partially adjust an refractive index of a liquid crystal material, a conductive material for applying voltage to liquid crystal materials is comprised of materials 2 and 6 which are made of a tin oxide material primarily. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2003037318A

公开(公告)日：2003-02-07

申请号：JP2001223056

申请日：2001-07-24

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KIJIMA KOICHIRO

IPC: G02F1/377 ,  G02F1/39 ,  H01S3/108 ,  H04B10/00 ,  H04B10/27 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00 ,  H04B10/02

CPC classification number: H04Q11/0005 ,  H04Q2011/0035 ,  H04Q2011/0039

Abstract: PROBLEM TO BE SOLVED: To make an optical exchange system fast and to simplify the constitution. SOLUTION: An optical transmission line 5 is arranged on the upstream side of an optical exchange 22 (optical switch) switching the transmission line, and made of a material with nonlinear optical effect. The material is irradiated with light from a light irradiation part (7, 8, 9) for causing the nonlinear optical effect. A light reception part 10 receives light emitted out of the optical transmission line by the nonlinear optical effect between the light emitted by the light irradiation part and light traveling in the optical transmission line, to obtain intensity information on the light traveling in the optical transmission line, so that the intensity information is used as a driving signal CSW for the optical exchange 22.

Abstract translation: 要解决的问题：使光学交换系统快速化并简化结构。 解决方案：光传输线5布置在切换传输线的光交换器22（光开关）的上游侧，并由具有非线性光学效应的材料制成。 对来自光照射部（7,8,9）的光照射材料以产生非线性光学效果。 光接收部10通过由光照射部发射的光与在光传输线中行进的光之间的非线性光学效应接收从光传输线发出的光，以获得关于在光传输线中行进的光的强度信息 ，使得强度信息被用作光交换器22的驱动信号CSW。

公开(公告)号：JP2002312977A

公开(公告)日：2002-10-25

申请号：JP2001120112

申请日：2001-04-18

Applicant: SONY CORP

Inventor： KIJIMA KOICHIRO

IPC: G11B7/241 ,  G11B7/004 ,  G11B7/24 ,  G11B11/105

Abstract: PROBLEM TO BE SOLVED: To provide an optical recording medium and its recording and reproducing method which do not have to reinforce the power of a light source, improve a cross light characteristic, source a recording margin and can deal with the increase of track density. SOLUTION: This optical recording medium has a recording laminated body including at least a recording layer formed on a substrate, the laminated body has a heating acceleration layer 16RH, etc. Light of higher level than that in a data reproduction mode is emitted to a recording layer 16RL in a data recording mode, and optical absorptivity of the recording layer 16RL is higher in the data recording mode than in the data reproduction mode with respect to the emitted light.

公开(公告)号：JP2002237098A

公开(公告)日：2002-08-23

申请号：JP2001030115

申请日：2001-02-06

Applicant: SONY CORP

Inventor： KIJIMA KOICHIRO ,  KURODA YUJI

IPC: B41M5/26 ,  G11B7/24 ,  G11B7/258

Abstract: PROBLEM TO BE SOLVED: To provide heat sink reflection layer having satisfactory surface roughness and increased heat capacity in an optical recording medium. SOLUTION: In the optical recording medium wherein at least the heat sink reflection layer 3, a recording layer 4 and a protective layer 5 are successively laminated on a substrate 2 in which a groove 2a is formed along a recording track and recording and/or reproduction of a signal are performed by irradiation with light from the protective layer 5 side, the heat sink layer 3 has a laminated structure including at least a metal film 7.

公开(公告)号：JP2002221606A

公开(公告)日：2002-08-09

申请号：JP2001015987

申请日：2001-01-24

Applicant: SONY CORP

Inventor： KIJIMA KOICHIRO ,  KOCHIYAMA AKIRA

IPC: G02B3/10 ,  B29D11/00 ,  G02B3/00 ,  G02B3/02 ,  G02B3/04 ,  G02B3/06 ,  G02B7/02 ,  G02B13/08 ,  G02B13/18 ,  G02B27/10 ,  G03C5/00 ,  G06F7/00 ,  G06F17/30 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide an optical lens and a method for manufacturing the lens having different focal distances on first and second planes perpendicular to each other, to provide an optical lens array, to provide a method for producing focus error signals and an optical pickup device which use the above lens. SOLUTION: The lens has a projecting part 20 having a convex curved face and functioning as an optical lens formed as integrated on a substrate 10 having a flat face. The projecting part 20 is formed in such a manner that the radius of curvature in a first cross section including the axis in the focus direction of the optical lens differs from the radius of curvature in a second cross section perpendicular to the first cross section with the axis in the focus direction as the crossing line, that the focal distance differs between on first plane and on the second plane perpendicular to each other, and that an almost oval or rectangular groove is formed along the boundary between the substrate 10 and the projecting part 20. The lens is used to produce focus error signals and to constitute the optical pickup device.

公开(公告)号：JP2002031897A

公开(公告)日：2002-01-31

申请号：JP2000216122

申请日：2000-07-17

Applicant: SONY CORP

Inventor： KIJIMA KOICHIRO

IPC: B24B21/00 ,  G03F1/00 ,  G03F1/68 ,  G03F7/38 ,  G11B7/26 ,  H01L21/027 ,  H01L21/304 ,  G03F1/08

Abstract: PROBLEM TO BE SOLVED: To avoid the blocking of high precision patterning due to the occurrence of projections on a photosensitive material layer in photolithography. SOLUTION: In a photolithographic method including a step for coating the smooth surface 1a of a substrate 1 with a photosensitive material, a step for patternwise exposing the resulting photosensitive material layer 2 and a step for developing the layer 2, the surface of the photosensitive material layer is polished prior to the exposure. By this surface polishing, projections present on the surface of the photosensitive material layer are removed or truncated to avoid non-exposure in a part to be exposed due to the presence of the projections.

公开(公告)号：JP2001250279A

公开(公告)日：2001-09-14

申请号：JP2000057372

申请日：2000-03-02

Applicant: SONY CORP

Inventor： KIJIMA KOICHIRO ,  KOCHIYAMA AKIRA

IPC: G11B7/0045 ,  G11B7/26

Abstract: PROBLEM TO BE SOLVED: To accurately form fine recesses and projections having sufficiently a smaller width or track pitch than the spot of the optical limit of the laser light used for the formation of the fine recesses and projections without influences of the length of the recesses and projections. SOLUTION: The objective fine recesses and projections are formed in steps of forming a heat sensitive material layer 12 on a substrate which constitutes a recording medium or a master disk for the manufacture of the recording medium, of forming a modified part 12s of the pattern according to the objective fine recesses and projections in the heat sensitive material layer by irradiating the layer with laser light according to the objective recesses and projections, and of patterning the heat sensitive material layer by developing the layer 12. In the process of irradiating with laser light in particular, the laser light is modulated at a higher frequency than the frequency of the period of the fine recesses and projections so that the pattern without depending on the length of the fine recesses and projections can be formed.

公开(公告)号：JP2001023241A

公开(公告)日：2001-01-26

申请号：JP19674299

申请日：1999-07-09

Applicant: SONY CORP

Inventor： KURODA YUJI ,  KIJIMA KOICHIRO ,  ICHIMURA ISAO ,  OSATO KIYOSHI ,  SAITO KIMIHIRO

IPC: G11B7/254 ,  G11B7/24 ,  G11B7/257 ,  G11B11/105

Abstract: PROBLEM TO BE SOLVED: To provide an optical recording medium for a near field system which has high intensity of reproduced signals and which is hardly damaged on the surface, and to provide a production method of the medium and an optical recording device equipped with that optical recording medium. SOLUTION: The optical recording medium consists of a substrate 11, reflection film 12 formed on the substrate, recording layer 14 formed on the reflection film, and first protective layer 15 formed on the recording layer 14. In the medium, information is recorded and reproduced by irradiating the recording layer 14 with light from an optical system through the first protective layer 15 side. Further, a surface protective layer 16 is formed on the first protective layer 15. The gap between the surface protective layer 16 and the optical system presents a near field, and the surface protective layer 16 has a specified refractive index and film thickness to mitigate changes in the reproducing signal intensity caused by changes in the gap, and the layer preferably consists of a silicon oxide film having >=100 nm film thickness. The invention also provides a production method of the medium and an optical recording device equipped with that optical recording medium.

公开(公告)号：JP2001023227A

公开(公告)日：2001-01-26

申请号：JP19503899

申请日：1999-07-08

Applicant: SONY CORP

Inventor： KIJIMA KOICHIRO ,  ICHIMURA ISAO ,  KURODA YUJI ,  OSATO KIYOSHI ,  YAMAMOTO KENJI

IPC: G02B13/00 ,  G11B7/135 ,  G11B11/10

Abstract: PROBLEM TO BE SOLVED: To prevent heat transfer from an objective fens to an optical disk, in the case that the objective lens is disposed in optical contact with the optical disk. SOLUTION: The emitting position varying means 20 varies the emitting position of a laser beam on the surface 14a opposite to a solid immersion lens 14 by movably operating a first relay lens 21 with a relay lens actuator 23, in the manner that an optical spot on the optical disk 100 is displaced in the tangential line direction of the recording track of the optical disk 100, while the optical spot is formed by the laser beam passing through the position varying means 20, entering an objective lens 13 and the solid immersion lens 14, and converging on these lenses 13, 14.

公开(公告)号：JP2000195074A

公开(公告)日：2000-07-14

申请号：JP19652899

申请日：1999-07-09

Applicant: SONY CORP

Inventor： ICHIMURA ISAO ,  KIJIMA KOICHIRO ,  KURODA YUJI ,  YAMAMOTO KENJI ,  OSATO KIYOSHI

IPC: G11B7/09 ,  G11B7/12

Abstract: PROBLEM TO BE SOLVED: To provide an optical head mounting an optical means for converging a laser beam being projected onto an optical recording medium in which numerical aperture can be increased through a solid immersion lens and the air gap can be controlled accurately based on the capacitance while simplifying the actuator or signal processing for focus servo furthermore. SOLUTION: An optical head 1 comprises an objective lens 2 for converging a laser beam L, a solid immersion lens 3 interposed between the objective lens 2 and an optical recording medium 51, a member 4 holding the lenses 2, 3 integrally, and a mechanism 5a for moving the holding member 4 in the direction of the optical axis of the laser beam L, wherein a conductive material is employed on the surface facing the optical recording medium 51.