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公开(公告)号:MY126028A
公开(公告)日:2006-09-29
申请号:MYPI20001253
申请日:2000-03-29
Applicant: SONY CORP
Inventor: YAMAMOTO KENJI , MAEDA FUMISADA , OSATO KIYOSHI
Abstract: A LENS HOLDER WHICH IS ABLE TO SECURE PLURAL LENSES IN AN ADJUSTMENT- FREE FASHION AND TO ACHIEVE RELATIVE POSITIONING BETWEEN THE LENSES TO HIGH PRECISION. TO THIS END, A FIRST REFERENCE SURFACE FOR THE OPTICAL AXIS DIRECTION (4A1) AND A SECOND REFERENCE SURFACE FOR THE OPTICLA AXIS DIRECTION (4B1) OF A SECOND MOUNTING PORTION (4B) ARE FORMED TOWARDS THE OBJECT POINT SIDE TO SERVE AS A REFERENCE SURFCAE FOR DETERMINING THE SEPARATION ALONG THE OPTICAL AXIS BETWEEN THE FIRST AND SECOND LENSES (2, 3) THE FIRST REFERENCE SURFACE FOR THE OPTICAL AXIS DIRECTION (4A1) AND THE SECOND REFERENCE SURFACE FOR THE OPTICAL AXIS DIRECTION (AB1) ALSO OPERATE FOR CONTROLLING THE TILT OF THE LENSES (2,3). FIG 1.
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公开(公告)号:PL185067B1
公开(公告)日:2003-02-28
申请号:PL32281097
申请日:1997-10-24
Applicant: SONY CORP
Inventor: YAMAMOTO KENJI , ICHIMURA ISAO , MAEDA FUMISADA , WATANABE TOSHIO , OHSATO KIYOSHI
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.
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公开(公告)号:ID25424A
公开(公告)日:2000-10-05
申请号:ID20000255
申请日:2000-03-30
Applicant: SONY CORP
Inventor: YAMAMOTO KENJI , MAEDA FUMISADA , OSATO KIYOSHI
Abstract: The lens holder is for lenses (2,3) which are arranged on an optical axis of an optical measuring head which is constructed for the recording and/or reproduction of data. The holder has several reference surfaces (4a1,4b1) which in each case lie along the optical axes and the inclination of the lenses the lenses (2,3) for controlling the positions of the lenses to regulate the positions of the lenses along the optical axes and the inclination of the lenses. Independent claims are included for methods for producing a lens holder, and for a metal punch used for producing the lens holder.
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公开(公告)号:PL322810A1
公开(公告)日:1998-04-27
申请号:PL32281097
申请日:1997-10-24
Applicant: SONY CORP
Inventor: YAMAMOTO KENJI , ICHIMURA ISAO , MAEDA FUMISADA , WATANABE TOSHIO , OHSATO KIYOSHI
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.
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公开(公告)号:AT495550T
公开(公告)日:2011-01-15
申请号:AT09252560
申请日:2009-11-05
Applicant: SONY CORP
Inventor: HAYASAKA KENGO , YAMAMOTO KENJI , ICHIMURA ISAO , HIROTA ISAO
Abstract: An image pickup apparatus is provided for obtaining parallax information while preventing a decline in apparent resolution. The image pickup apparatus includes: an image pickup lens having an aperture stop; an image pickup device including a plurality of pixels and obtaining image pickup data based on light received on the plurality of pixels; and a microlens array arranged between the image pickup lens and the image pickup device so that one microlens is allocated to 2×2 pixels in the image pickup device. The plurality of pixels are disposed in a fashion of two-dimensional arrangement along two directions rotated a certain angle with respect to a horizontal direction and a vertical direction, respectively.
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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
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.
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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)
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公开(公告)号:AU723455B2
公开(公告)日:2000-08-24
申请号:AU4275797
申请日:1997-10-21
Applicant: SONY CORP
Inventor: YAMAMOTO KENJI , ICHIMURA ISAO , MAEDA FUMISADA , WATANABE TOSHIO , OHSATO KIYOSHI
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.
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公开(公告)号:SG45208A1
公开(公告)日:1998-01-16
申请号:SG1996001303
申请日:1996-02-12
Applicant: SONY CORP
Inventor: MAEDA FUMISADA , ICHIMURA ISAO , YAMAMOTO KENJI
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.
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公开(公告)号:FR2511790B1
公开(公告)日:1986-03-28
申请号:FR8214521
申请日:1982-08-24
Applicant: SONY CORP
Inventor: FURUKAWA SHUNSUKE , YAMAMOTO KENJI
Abstract: Apparatus for rapidly transferring data between a central processing unit (CPU) of microcomputer apparatus and floppy disc drives, includes a floppy disc controller for interfacing the floppy disc drives with the CPU and generating an interrupt request status signal indicating whether a command has been executed and a data request status signal indicating whether data is to transferred between the floppy disc controller and the CPU, the CPU generating command signals in response to these status signals; a data bus connecting the CPU to data access lines of the floppy disc controller; a bidirectional buffer interposed between the data bus and the data access lines for gating the data between the floppy disc controller and the CPU through the data bus and for gating the interrupt request status signal and data request status signal through the data bus to the CPU in response to gating signals; first and second gate circuits for gating the status signals to the buffer in response to the gating signals; a NOR gate for supplying gating signals to enable the buffer in response to the command signals; and an OR gate for supplying gating signals to enable the first and second gate circuits in response to the command signals, whereby rapid data transfer is achieved without using a direct memory access controller.
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