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公开(公告)号：MY139633A
公开(公告)日：2009-10-30
申请号：MYPI20052563
申请日：2005-06-06
Applicant: SONY CORP
Inventor： NAKAO TAKASHI
Abstract: AN OPTICAL HEAD INCLUDES A LASER LIGHT SOURCE, AN OPTICAL SYSTEM THAT APPLIES 0-ORDER DIFFRACTED LIGHT, +1- ORDER DIFFRACTED LIGHT, AND -1-ORDER DIFFRACTED LIGHT, WHICH ARE PRODUCED FROM LASER LIGHT EMITTED FROM THE LASER LIGHT SOURCE, ONTO A RECORDING MEDIUM HAVING A PLURALITY OF INFORMATION RECORDING LAYERS, AND A LIGHT-RECEIVING DEVICE FOR DETECTING REFLECTED LIGHT GUIDED BY THE OPTICAL SYSTEM. THE LIGHT-RECEIVING DEVICE INCLUDES A FIRST LIGHT-RECEIVING SECTION FOR DETECTING REFLECTED LIGHT OF THE 0-ORDER DIFFRACTED LIGHT, TWO SECOND LIGHT-RECEIVING SECTIONS FOR DETECTING REFLECTED LIGHT OF THE +1-ORDER DIFFRACTED LIGHT AND REFLECTED LIGHT OF THE -1-ORDER DIFFRACTED LIGHT, AND A THIRD LIGHT-RECEIVING SECTION PROVIDED NEAR AT LEAST ONE OF THE SECOND LIGHT-RECEIVING SECTIONS TO RECEIVE STRAY LIGHT REFLECTED FROM ONE OR MORE INFORMATION RECORDING LAYERS OTHER THAN A TARGET INFORMATION RECORDING LAYER TO BE ACCESSED.
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公开(公告)号：DE602005004201T2
公开(公告)日：2008-12-24
申请号：DE602005004201
申请日：2005-06-07
Applicant: SONY CORP
Inventor： NAKAO TAKASHI
Abstract: An optical head includes a laser light source, an optical system that applies 0-order diffracted light, +1-order diffracted light (SB1), and -1-order diffracted light (SB2), which are produced from laser light emitted from the laser light source, onto a recording medium having a plurality of information recording layers, and a light-receiving device for detecting reflected light guided by the optical system. The light-receiving device includes a first light-receiving section (A, B, C, D) for detecting reflected light of the 0-order diffracted light, two second light-receiving sections ((E, F), (G, H)) for detecting reflected light of the +1-order diffracted light (SB1) and reflected light of the -1-order diffracted light (SB2), and a third light-receiving section (I, J) provided near at least one of the second light-receiving sections ((E, F), (G, H)) to receive stray light reflected from one or more information recording layers other than a target information recording layer to be accessed.
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公开(公告)号：DE602005004201D1
公开(公告)日：2008-02-21
申请号：DE602005004201
申请日：2005-06-07
Applicant: SONY CORP
Inventor： NAKAO TAKASHI
Abstract: An optical head includes a laser light source, an optical system that applies 0-order diffracted light, +1-order diffracted light (SB1), and -1-order diffracted light (SB2), which are produced from laser light emitted from the laser light source, onto a recording medium having a plurality of information recording layers, and a light-receiving device for detecting reflected light guided by the optical system. The light-receiving device includes a first light-receiving section (A, B, C, D) for detecting reflected light of the 0-order diffracted light, two second light-receiving sections ((E, F), (G, H)) for detecting reflected light of the +1-order diffracted light (SB1) and reflected light of the -1-order diffracted light (SB2), and a third light-receiving section (I, J) provided near at least one of the second light-receiving sections ((E, F), (G, H)) to receive stray light reflected from one or more information recording layers other than a target information recording layer to be accessed.
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公开(公告)号：DE69423843D1
公开(公告)日：2000-05-11
申请号：DE69423843
申请日：1994-10-27
Applicant: SONY CORP
Inventor： NAKAO TAKASHI
Abstract: To optically reproduce digital speech data recorded on an emulsifier surface (3) of a motion picture film (1), the film is illuminated with light (6) from the side of a base surface (2) of the film, and the light transmitted through the emulsifier surface (3) is collected as incident light by a reproducing lens (4). In this way, it is possible to reduce variations in the volume of light of the reproduced digital data which would otherwise be caused by scratches or dust present on the base surface (2) of the film (1).
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公开(公告)号：DE112016002656T5
公开(公告)日：2018-02-22
申请号：DE112016002656
申请日：2016-05-12
Applicant: SONY CORP
Inventor： NAKAO TAKASHI
Abstract: Eine Informationsverarbeitungsvorrichtung, die Schaltkreise beinhaltet, die konfiguriert sind zum Erfassen von Belastungsverteilungsinformationen eines Subjekts durch mindestens einen Sensor, zum Analysieren der erfassten Belastungsverteilungsinformationen und zum Initiieren einer Bereitstellung von Rückmeldeinformationen basierend auf den analysierten Belastungsverteilungsinformationen.
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Patent Agency Ranking
公开(公告)号：DE69613871T2
公开(公告)日：2002-04-11
申请号：DE69613871
申请日：1996-02-21
Applicant: SONY CORP
Inventor： DOI MASATO , NARUI HIRONOBU , NAKAO TAKASHI
Abstract: An optical device comprises a light-emitting portion (4), a converging means (3), and a light-receiving portion (5), wherein light (LF) emitted from the light-emitting portion (4) is converged and irradiated by the converging means (3) on an irradiated portion (2) and returned light (LR) reflected from the irradiated portion (2) also is converged by the converging means (3), the light-receiving portion (5) is disposed near a confocal position of returned light (LR) from the irradiated portion (2) of the converging means (2), light (LF) emitted from the light-emitting portion (4) is passed through a light path of the same axis and received by the light-receiving portion (5) before and after it is reflected on the irradiated portion (2), and the light-receiving portion (5) detects a signal based on a push-pull method. In the optical device such as an optical pickup, the number of optical components can be reduced, and alignment required to adjust optical components of the optical device for proper interrelationship can be simplified. Thus, the optical device can be simplified and miniaturized. Also, a tracking servo signal can be stably detected by utilizing push-pull method.
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公开(公告)号：DE69613871D1
公开(公告)日：2001-08-23
申请号：DE69613871
申请日：1996-02-21
Applicant: SONY CORP
Inventor： DOI MASATO , NARUI HIRONOBU , NAKAO TAKASHI
Abstract: An optical device comprises a light-emitting portion (4), a converging means (3), and a light-receiving portion (5), wherein light (LF) emitted from the light-emitting portion (4) is converged and irradiated by the converging means (3) on an irradiated portion (2) and returned light (LR) reflected from the irradiated portion (2) also is converged by the converging means (3), the light-receiving portion (5) is disposed near a confocal position of returned light (LR) from the irradiated portion (2) of the converging means (2), light (LF) emitted from the light-emitting portion (4) is passed through a light path of the same axis and received by the light-receiving portion (5) before and after it is reflected on the irradiated portion (2), and the light-receiving portion (5) detects a signal based on a push-pull method. In the optical device such as an optical pickup, the number of optical components can be reduced, and alignment required to adjust optical components of the optical device for proper interrelationship can be simplified. Thus, the optical device can be simplified and miniaturized. Also, a tracking servo signal can be stably detected by utilizing push-pull method.
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公开(公告)号：DE69024170T2
公开(公告)日：1996-05-02
申请号：DE69024170
申请日：1990-10-16
Applicant: SONY CORP
Inventor： NARAHARA TATSUYA , KAMATANI YOSHITERU , NAKAO TAKASHI , MIYOSHI HIROSHI
Abstract: A servo control circuit for an image rotator (5) used in an optical tape recording apparatus that employs a rotary tape drum (6). Pairs of pulse generators (17,24) and frequency generators (18,22) are provided on the image rotator (5) and on the tape drum (6), respectively, Initially, the pulse generators (17,24) are used for servo control and, upon detecting a phase lock, servo control is subsequently switched over to be controlled by the frequency generators (18,22).
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公开(公告)号：DE69423843T2
公开(公告)日：2000-11-16
申请号：DE69423843
申请日：1994-10-27
Applicant: SONY CORP
Inventor： NAKAO TAKASHI
Abstract: To optically reproduce digital speech data recorded on an emulsifier surface (3) of a motion picture film (1), the film is illuminated with light (6) from the side of a base surface (2) of the film, and the light transmitted through the emulsifier surface (3) is collected as incident light by a reproducing lens (4). In this way, it is possible to reduce variations in the volume of light of the reproduced digital data which would otherwise be caused by scratches or dust present on the base surface (2) of the film (1).
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公开(公告)号：SG52711A1
公开(公告)日：1998-09-28
申请号：SG1996008143
申请日：1996-02-23
Applicant: SONY CORP
Inventor： MASATO DOI , NARUI HIRONOBU , NAKAO TAKASHI
Abstract: An optical device comprises a light-emitting portion (4), a converging means (3), and a light-receiving portion (5), wherein light (LF) emitted from the light-emitting portion (4) is converged and irradiated by the converging means (3) on an irradiated portion (2) and returned light (LR) reflected from the irradiated portion (2) also is converged by the converging means (3), the light-receiving portion (5) is disposed near a confocal position of returned light (LR) from the irradiated portion (2) of the converging means (2), light (LF) emitted from the light-emitting portion (4) is passed through a light path of the same axis and received by the light-receiving portion (5) before and after it is reflected on the irradiated portion (2), and the light-receiving portion (5) detects a signal based on a push-pull method. In the optical device such as an optical pickup, the number of optical components can be reduced, and alignment required to adjust optical components of the optical device for proper interrelationship can be simplified. Thus, the optical device can be simplified and miniaturized. Also, a tracking servo signal can be stably detected by utilizing push-pull method.
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