DE69227357D1 - Optisches Gerät - Google Patents

Optisches Gerät

Info

Publication number
DE69227357D1
DE69227357D1 DE69227357T DE69227357T DE69227357D1 DE 69227357 D1 DE69227357 D1 DE 69227357D1 DE 69227357 T DE69227357 T DE 69227357T DE 69227357 T DE69227357 T DE 69227357T DE 69227357 D1 DE69227357 D1 DE 69227357D1
Authority
DE
Germany
Prior art keywords
optical device
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69227357T
Other languages
English (en)
Other versions
DE69227357T2 (de
Inventor
Tadashi Taniguchi
Chikai Kojima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP3359406A external-priority patent/JP3057278B2/ja
Priority claimed from JP4030044A external-priority patent/JPH05198030A/ja
Priority claimed from JP03420592A external-priority patent/JP3355607B2/ja
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE69227357D1 publication Critical patent/DE69227357D1/de
Publication of DE69227357T2 publication Critical patent/DE69227357T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10595—Control of operating function
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0912—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by push-pull method

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
DE69227357T 1991-12-27 1992-12-24 Optisches Gerät Expired - Fee Related DE69227357T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3359406A JP3057278B2 (ja) 1991-12-27 1991-12-27 光学装置
JP4030044A JPH05198030A (ja) 1992-01-21 1992-01-21 光磁気記録用レーザカプラ
JP03420592A JP3355607B2 (ja) 1992-01-24 1992-01-24 光磁気記録用偏光光学系

Publications (2)

Publication Number Publication Date
DE69227357D1 true DE69227357D1 (de) 1998-11-26
DE69227357T2 DE69227357T2 (de) 1999-06-02

Family

ID=27286814

Family Applications (3)

Application Number Title Priority Date Filing Date
DE69227357T Expired - Fee Related DE69227357T2 (de) 1991-12-27 1992-12-24 Optisches Gerät
DE69232509T Expired - Lifetime DE69232509D1 (de) 1991-12-27 1992-12-24 Optisches Gerät
DE69232508T Expired - Lifetime DE69232508D1 (de) 1991-12-27 1992-12-24 Optisches Gerät

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE69232509T Expired - Lifetime DE69232509D1 (de) 1991-12-27 1992-12-24 Optisches Gerät
DE69232508T Expired - Lifetime DE69232508D1 (de) 1991-12-27 1992-12-24 Optisches Gerät

Country Status (5)

Country Link
US (2) US5350917A (de)
EP (3) EP0840305B1 (de)
KR (2) KR100263863B1 (de)
DE (3) DE69227357T2 (de)
TW (1) TW302101U (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729511A (en) 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
US6236625B1 (en) 1991-02-15 2001-05-22 Discovision Associates Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
US5677899A (en) 1991-02-15 1997-10-14 Discovision Associates Method for moving carriage assembly from initial position to target position relative to storage medium
US5517479A (en) * 1993-03-26 1996-05-14 Matsushita Electronics Corporation Optical head including a semiconductor laser having a non-scatter incident area
US5600619A (en) * 1993-09-27 1997-02-04 Seiko Epson Corporation Optical head
JP3379814B2 (ja) * 1993-11-19 2003-02-24 オリンパス光学工業株式会社 光ヘッド
US5598394A (en) * 1994-05-19 1997-01-28 Sanyo Electric Co., Ltd. Optical pick-up
JPH0845102A (ja) * 1994-07-28 1996-02-16 Olympus Optical Co Ltd 光学ヘッド
JPH08212612A (ja) * 1994-11-17 1996-08-20 Canon Inc 光学的情報記録再生装置及び該装置用光ヘッド
JP3438365B2 (ja) * 1994-11-29 2003-08-18 ソニー株式会社 複合光学装置およびその製造方法
US6434087B1 (en) 1995-01-25 2002-08-13 Discovision Associates Optical disc system and method for controlling bias coil and light source to process information on a storage medium
JPH08235663A (ja) * 1995-02-24 1996-09-13 Sony Corp 光学素子
JP3520594B2 (ja) * 1995-03-02 2004-04-19 ソニー株式会社 複合光学装置
JP3544239B2 (ja) * 1995-03-04 2004-07-21 ソニー株式会社 光学ピツクアツプ及び光記録媒体再生装置
EP0731456A2 (de) * 1995-03-04 1996-09-11 Sony Corporation Optischer Abtaster und Wiedergabegerät für ein optisches Aufzeichnungsmedium
EP0749119A3 (de) * 1995-05-31 1997-08-20 Daewoo Electronics Co Ltd Optisches Abtastgerät
US5727111A (en) * 1995-06-19 1998-03-10 Sony Corporation Optical pick-up and light detecting cover therefor
US5796701A (en) * 1995-06-23 1998-08-18 Sony Corporation Optical pickup and opto-magnetic signal reproducing apparatus
US5912456A (en) * 1996-03-19 1999-06-15 Texas Instruments Incorporated Integrally formed surface plasmon resonance sensor
US6504812B2 (en) 1996-05-27 2003-01-07 Sony Corporation Optical pickup device with a plurality of laser couplers
US7038994B1 (en) 1996-05-27 2006-05-02 Sony Corporation Optical pickup device with a plurality of laser couplers
JPH09320098A (ja) * 1996-05-27 1997-12-12 Sony Corp 光ピックアップ装置および複合光学装置
US6097689A (en) * 1996-07-31 2000-08-01 Daewoo Electronics Co., Ltd Optical pickup system incorporated therein a polarizing film and a pair of 1/4 wavelength plates
JPH10320810A (ja) * 1997-05-22 1998-12-04 Sankyo Seiki Mfg Co Ltd 半導体レーザ装置および光ピックアップ装置
DE19748324C2 (de) * 1997-10-31 1999-08-26 Siemens Ag Optoelektronisches Sensormodul
JP2001332799A (ja) * 2000-05-19 2001-11-30 Rohm Co Ltd モールド型半導体レーザ
JP3552042B2 (ja) * 2001-05-15 2004-08-11 船井電機株式会社 光ピックアップと電子部品付きプレートの固定方法
JP4322058B2 (ja) * 2003-07-23 2009-08-26 日本電産サンキョー株式会社 光学素子の固定構造、および光ヘッド装置
JP2005106879A (ja) * 2003-09-29 2005-04-21 Minolta Co Ltd 表面に多層膜を有するプリズムの製造方法
JP2005235276A (ja) * 2004-02-18 2005-09-02 Tdk Corp 光ヘッド、光再生装置及び光記録再生装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4262198A (en) * 1979-07-30 1981-04-14 California Institute Of Technology Broadband optical radiation detector
JPS56107247A (en) * 1980-01-31 1981-08-26 Ricoh Co Ltd Image recording method
US4695719A (en) * 1983-12-05 1987-09-22 Honeywell Inc. Apparatus and method for opto-electronic package
JPS60131648A (ja) * 1983-12-19 1985-07-13 Toshiba Corp 光学ヘツド
DE3583039D1 (de) * 1985-12-17 1991-07-04 Ibm Deutschland Schreib/lesekopf fuer optische platten.
JPH0719394B2 (ja) * 1986-04-23 1995-03-06 ソニー株式会社 半導体レ−ザ装置
JP2508478B2 (ja) * 1987-02-06 1996-06-19 ソニー株式会社 光学ヘツド
JP2638047B2 (ja) * 1988-03-18 1997-08-06 ソニー株式会社 光学ピツクアツプ装置
JP2730136B2 (ja) * 1988-03-18 1998-03-25 ソニー株式会社 光学ピツクアツプ装置
DE68909663T2 (de) * 1988-04-26 1994-04-07 Philips Nv Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers.
EP0439876A1 (de) * 1990-01-29 1991-08-07 Hitachi Maxell Ltd. Optischer Kopf mit doppeltem Strahlteiler
JPH04149840A (ja) * 1990-10-12 1992-05-22 Olympus Optical Co Ltd 光学式情報読取り装置
JPH04177643A (ja) * 1990-11-13 1992-06-24 Olympus Optical Co Ltd 光学式情報再生装置
JPH04289541A (ja) * 1991-01-10 1992-10-14 Olympus Optical Co Ltd 光磁気ピックアップ装置

Also Published As

Publication number Publication date
TW302101U (en) 1997-04-01
KR100263863B1 (ko) 2000-08-16
US5350917A (en) 1994-09-27
EP0550036A3 (en) 1993-09-22
EP0840305B1 (de) 2002-03-20
DE69227357T2 (de) 1999-06-02
EP0840305A2 (de) 1998-05-06
EP0836177B1 (de) 2002-03-20
EP0836177A1 (de) 1998-04-15
US5396061A (en) 1995-03-07
KR100280055B1 (ko) 2001-01-15
DE69232509D1 (de) 2002-04-25
DE69232508D1 (de) 2002-04-25
EP0840305A3 (de) 1999-01-27
EP0550036B1 (de) 1998-10-21
EP0550036A2 (de) 1993-07-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee