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公开(公告)号：DE69736507T2
公开(公告)日：2007-04-05
申请号：DE69736507
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：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
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.
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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
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)
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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
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：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
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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Patent Agency Ranking
公开(公告)号：DE10015953A1
公开(公告)日：2000-10-26
申请号：DE10015953
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：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
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：DE112019003447T5
公开(公告)日：2021-03-18
申请号：DE112019003447
申请日：2019-07-02
Applicant: SONY CORP
Inventor： MATSUI TAKESHI , KUWAYAMA TETSURO , FUJITA GORO , YOSHIDA HIROSHI , FUKAZAWA TAKANORI , MAEDA FUMISADA
Abstract: Ein medizinisches Beobachtungssystem (3), umfassend: einen Bildgebungsabschnitt (303), der zum Erfassen eines Bilds eines betroffenen Bereichs ausgelegt ist; einen Detektionsabschnitt (311), der zum Extrahieren einer Bewegung eines Behandlungswerkzeugs, das in einer Umgebung des betroffenen Bereichs gehalten wird, auf der Grundlage von Bildern des betroffenen Bereichs, die sequentiell vom Bildgebungsabschnitt erfasst wurden, und zum Nachweisen einer Bewegung des betroffenen Bereichs auf der Grundlage eines Resultats der Extraktion ausgelegt ist; und einen Steuerabschnitt (301), der zur Steuerung der Verarbeitung bezüglich der Beobachtung des betroffenen Bereichs gemäß einem Detektionsresultat bezüglich der Bewegung des betroffenen Bereichs ausgelegt ist.
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公开(公告)号：DE69835712D1
公开(公告)日：2006-10-12
申请号：DE69835712
申请日：1998-03-06
Applicant: SONY CORP
Inventor： YAMAMOTO KENJI , ICHIMURA ISAO , MAEDA FUMISADA , WATANABE TOSHIO , SUZUKI AKIRA , OHSATO KIYOSHI
IPC: G11B7/135 , G02B7/02 , G02B9/06 , G02B13/18 , G11B7/1372 , G11B7/1374 , G11B7/22
Abstract: An optical pickup incorporates a two-lens system with first and second lenses (13) and (14) being arranged in the following manner: the first lens has a first surface (15) to receive a laser beam radiated from a semiconductor laser and a second surface (16) to direct the laser beam transmitted from the first surface (15) towards the second lens (14); the second lens (14) has a third surface (17) to receive the light flux transmitted from the second surface (16) and a fourth surface (18) to direct the light flux transmitted from the third surface (17) towards an optical disc placed opposite thereto; and the first and fourth surfaces (15, 18) are used as a reference during positioning. The aberrations of the optical pickup are limited within a tolerable limit without incorporating a special device for that purpose even if errors arise in thickness of component lenses of a two-lens system constituting an element of the pickup.
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公开(公告)号：DE69736507D1
公开(公告)日：2006-09-28
申请号：DE69736507
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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