公开(公告)号：ES2267124T3

公开(公告)日：2007-03-01

申请号：ES97402530

申请日：1997-10-24

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI ,  ICHIMURA ISAO ,  MAEDA FUMISADA ,  WATANABE TOSHIO ,  OHSATO KIYOSHI

IPC: G02B13/00 ,  G02B13/24 ,  G02B3/02 ,  G02B9/06 ,  G02B13/18 ,  G11B7/1374

Abstract: UN OBJETIVO QUE TIENE UNA ESTRUCTURA DE DOBLETE Y UNA ABERTURA NUMERICA DE 0,7 O MAYOR Y UN APARATO DE CAPTACION OPTICA DOTADO DE ESE OBJETIVO ESTAN ADAPTADOS A UN MEDIO DE GRABACION OPTICA QUE TIENE UNA DENSIDAD DE GRABACION DE ALTA INFORMACION, HALLANDOSE ESTRUCTURADO EL OBJETIVO DE MANERA QUE AL MENOS TENGA UN LADO CON UNA SUPERFICIE AESFERICA Y FABRICANDOSE LOS ELEMENTOS DEL OBJETIVO (3, 4) DE VIDRIO DE BAJA DIFUSION QUE TIENE UN NUMERO DE ABBE DE 40 O MAYOR.

公开(公告)号：DE69836168D1

公开(公告)日：2006-11-30

申请号：DE69836168

申请日：1998-05-15

Applicant: SONY CORP

Inventor： OWA HIDEO ,  KOBAYASHI SHOEI ,  SENSYU SUSUMU ,  KATSURAMOTO SHINJI ,  WATANABE TOSHIO ,  MORI HIDENORI ,  YAMAMOTO MASANOBU ,  SAITO MASAKI

IPC: G11B7/007 ,  G11B7/013 ,  G11B7/12 ,  G11B7/135 ,  G11B19/28 ,  G11B20/00 ,  G11B20/10 ,  G11B23/033 ,  G11B27/034 ,  G11B27/036 ,  G11B27/10 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  G11B27/34 ,  G11B27/36

Abstract: An optical disk apparatus for recording and/or reproducing user data on to and/or from an optical disk (12) includes an optical head (11) with a semiconductor laser (13) for irradiating a laser beam having a wavelength of approximately 680 nm or less to the optical disk (12) and having a lens (17) with a numerical aperture (NA) of approximately 0.7 or more and a working distance of approximately 560 µm or less. By utilizing such apparatus, a relatively large amount of data may be recorded onto the optical disk (12).

公开(公告)号：MY119398A

公开(公告)日：2005-05-31

申请号：MYPI9704993

申请日：1997-10-23

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI ,  ICHIMURA ISAO ,  WATANABE TOSHIO ,  OHSATO KIYOSHI ,  MAEDA FUMISADA

IPC: G02B13/00 ,  G02B3/02 ,  G11B7/00 ,  G02B9/06 ,  G02B13/18 ,  G02B13/24 ,  G11B7/135 ,  G11B7/1374

Abstract: AN OBJECTIVE LENS (3,4) HAVING A DOUBLET STRUCTURE AND A NUMBER OF APERTURES OF 0.7 OR MORE AND AN OPTICAL PICKUP APPARATUS HAVING THE OBJECTIVE LENS (3,4) TO BE ADAPTABLE TO A OPTICAL RECORDING MEDIUM HAVING A HIGH INFORMATION RECORDING DENSITY, THE OBJECTIVE LENS (3,4) BEING STRUCTURED SUCH THAT AT LEAST ONE SIDE IS FORMED INTO A ASPHERIC SURFACE AND THE LENS ELEMENTS (3,4) ARE MADE OF LOW - DIFFUSION GLASS HAVING AN ABB'S NUMBER OF 40 OR GREATER.(FIG. 1)

公开(公告)号：DE69617287T2

公开(公告)日：2002-08-08

申请号：DE69617287

申请日：1996-02-15

Applicant: SONY CORP

Inventor： MAEDA FUMISADA ,  ICHIMURA ISAO ,  YAMAMOTO KENJI ,  OHSATO KIYOSHI ,  WATANABE TOSHIO

IPC: G11B7/12 ,  G11B7/135

Abstract: An optical pickup device for condensing the light from a light source on a signal recording surface of an optical recording medium, such as an optical disc (20). A semi-spherical lens (9) of the optical pickup device has a surface (9b) facing an optical disc (20) and has a pre-set refractive index. The optical pickup device also has a slider (12) adapted for securing the lens (9) and for being in sliding contact with an optical disc (20), and a spring plate (13) adapted for thrusting and supporting the slider in sliding contact with the optical disc (20). With the optical pickup device, high density reproduction may be realized, while the tolerance value for warping during disc molding or the tolerance value for warping due to moisture absorption may be increased. In addition, the production yield and the degree of freedom in selecting the disc materials may be improved.

公开(公告)号：DE69617287D1

公开(公告)日：2002-01-10

申请号：DE69617287

申请日：1996-02-15

Applicant: SONY CORP

Inventor： MAEDA FUMISADA ,  ICHIMURA ISAO ,  YAMAMOTO KENJI ,  OHSATO KIYOSHI ,  WATANABE TOSHIO

IPC: G11B7/12 ,  G11B7/135

Abstract: An optical pickup device for condensing the light from a light source on a signal recording surface of an optical recording medium, such as an optical disc (20). A semi-spherical lens (9) of the optical pickup device has a surface (9b) facing an optical disc (20) and has a pre-set refractive index. The optical pickup device also has a slider (12) adapted for securing the lens (9) and for being in sliding contact with an optical disc (20), and a spring plate (13) adapted for thrusting and supporting the slider in sliding contact with the optical disc (20). With the optical pickup device, high density reproduction may be realized, while the tolerance value for warping during disc molding or the tolerance value for warping due to moisture absorption may be increased. In addition, the production yield and the degree of freedom in selecting the disc materials may be improved.

公开(公告)号：DE69320765T2

公开(公告)日：1999-03-18

申请号：DE69320765

申请日：1993-11-26

Applicant: SONY CORP

Inventor： YOSHIMURA SHUNJI ,  ICHIMURA ISAO ,  AKIYAMA YOSHIYUKI ,  WATANABE TOSHIO ,  OHSATO KIYOSHI ,  KATSURAMOTO SHINJI

IPC: G03B31/02 ,  G11B7/00 ,  G11B7/003 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/28 ,  G11B27/30 ,  H04R5/00 ,  H04N5/91

Abstract: A cinefilm (1) has an image recording area (2) in which an image is recorded, a perforation section (3) for film feed, and digital pattern data recording areas (5, 6) provided in the vicinity of the perforation section (3). Plural channels of audio data are recorded as digital patterns in the digital pattern data recording areas (5, 6).

公开(公告)号：ID20282A

公开(公告)日：1998-11-19

申请号：ID980730

申请日：1998-05-18

Applicant: SONY CORP

Inventor： OWA HIDEO ,  KOBAYASHI SHOEI ,  SENSYU SUSUMU ,  KATSURAMOTO SHINJI ,  WATANABE TOSHIO ,  MORI HIDENORI ,  YAMAMOTO MASANOBU ,  SAITO MASAKI

IPC: G11B7/007 ,  G11B7/013 ,  G11B7/12 ,  G11B7/135 ,  G11B19/28 ,  G11B20/10 ,  G11B23/033 ,  G11B27/034 ,  G11B27/036 ,  G11B27/10 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  G11B27/34 ,  G11B27/36 ,  G11B17/26

Abstract: An optical disk apparatus for recording and/or reproducing user data on to and/or from an optical disk (12) includes an optical head (11) with a semiconductor laser (13) for irradiating a laser beam having a wavelength of approximately 680 nm or less to the optical disk (12) and having a lens (17) with a numerical aperture (NA) of approximately 0.7 or more and a working distance of approximately 560 µm or less. By utilizing such apparatus, a relatively large amount of data may be recorded onto the optical disk (12).

公开(公告)号：ID18705A

公开(公告)日：1998-04-30

申请号：ID973512

申请日：1997-10-23

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI ,  ICHIMURA ISAO ,  MAEDA FUMISADA ,  WATANABE TOSHIO ,  OHSATO KIYOSHI

IPC: G02B13/00 ,  G02B3/02 ,  G02B9/06 ,  G02B13/18 ,  G02B13/24 ,  G11B7/1374 ,  G02G3/02

Abstract: An objective lens having a doublet structure and a numerical aperture of 0.7 or more and an optical pickup apparatus having this objective lens are adapted to an optical recording medium having a high information recording density, the objective lens being structured such that at least one side is formed into a aspheric surface and the lens elements (3, 4) are made of low-diffusion glass having an Abbe's number of 40 or greater.

公开(公告)号：AT336735T

公开(公告)日：2006-09-15

申请号：AT97402530

申请日：1997-10-24

Applicant: SONY CORP

Inventor： YAMAMOTO KENJI ,  ICHIMURA ISAO ,  MAEDA FUMISADA ,  WATANABE TOSHIO ,  OHSATO KIYOSHI

IPC: G02B13/00 ,  G02B3/02 ,  G02B9/06 ,  G02B13/18 ,  G02B13/24 ,  G11B7/1374

Abstract: An objective lens having a doublet structure and a numerical aperture of 0.7 or more and an optical pickup apparatus having this objective lens are adapted to an optical recording medium having a high information recording density, the objective lens being structured such that at least one side is formed into a aspheric surface and the lens elements (3, 4) are made of low-diffusion glass having an Abbe's number of 40 or greater.

公开(公告)号：MY120346A

公开(公告)日：2005-10-31

申请号：MYPI9804445

申请日：1998-09-26

Applicant: SONY CORP

Inventor： MAEDA FUMISADA ,  ICHIMURA ISAO ,  YAMAMOTO KENJI ,  OHSATO KIYOSHI ,  WATANABE TOSHIO

IPC: G11B7/00 ,  G11B7/135 ,  G11B7/09 ,  G11B7/125 ,  G11B7/1372 ,  G11B7/1378 ,  G11B7/1392

Abstract: A RECORDING/REPRODUCING APPARATUS FOR AN OPTICAL RECORDING MEDIUM (2) IN WHICH A LASER LIGHT BEAM IS ILLUMINATED ON AN OPTICAL RECORDING MEDIUM (2) USING A DOUBLE-LENS TYPE OBJECTIVE LENS MADE UP OF AT LEAST A FIRST LENS (3) AND A SECOND LENS (4) TO RECORD AND/OR REPRODUCE THE INFORMATION. THE APPARATUS INCLUDES A FIRST LENS (3) FOR CONVERGING THE LASER LIGHT ILLUMINATED FROM A LIGHT SOURCE, A SECOND LENS (4) ARRANGED BETWEEN THE FIRST LENS AND THE OPTICAL RECORDING MEDIUM (2) AND A VOICE COIL MOTOR FOR CAUSING RELATIVE MOVEMENT OF THE FIRST AND SECOND LENSES (3,4) FOR VARYING THE DISTANCE THEREBETWEEN IN THE DIRECTION ALONG THE OPTICAL AXIS. THE FIRST LENS (3) IS MOVED TO VARY THE DISTANCE BETWEEN THE FIRST AND SECOND LENSES. THIS ENLARGES THE NUMERICAL APERTURE AND DIMINISHES THE EFFECT OF ABERRATION TO ENABLE HIGH-DENSITY RECORDING AND/OR REPRODUCTION OF INFORMATION SIGNALS TO A HIGH RECORDING DENSITY. (FIGURE 2)