DE69419550D1 - Optischer Kopf - Google Patents

Optischer Kopf

Info

Publication number
DE69419550D1
DE69419550D1 DE69419550T DE69419550T DE69419550D1 DE 69419550 D1 DE69419550 D1 DE 69419550D1 DE 69419550 T DE69419550 T DE 69419550T DE 69419550 T DE69419550 T DE 69419550T DE 69419550 D1 DE69419550 D1 DE 69419550D1
Authority
DE
Germany
Prior art keywords
optical head
optical
head
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 - Lifetime
Application number
DE69419550T
Other languages
English (en)
Other versions
DE69419550T2 (de
Inventor
Hideyuki Nakanishi
Akira Ueno
Hideo Nagai
Akio Yoshikawa
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.)
Panasonic Corp
Original Assignee
Matsushita Electronics 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
Application filed by Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Application granted granted Critical
Publication of DE69419550D1 publication Critical patent/DE69419550D1/de
Publication of DE69419550T2 publication Critical patent/DE69419550T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • 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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G11B7/08—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
    • G11B7/0901—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 track following only
    • G11B7/0903—Multi-beam tracking systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732—Location after the connecting process
    • H01L2224/73251—Location after the connecting process on different surfaces
    • H01L2224/73265—Layer and wire connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S2301/00—Functional characteristics
    • H01S2301/17—Semiconductor lasers comprising special layers
    • H01S2301/176—Specific passivation layers on surfaces other than the emission facet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/022—Mountings; Housings
    • H01S5/0225—Out-coupling of light
    • H01S5/02255—Out-coupling of light using beam deflecting elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/022—Mountings; Housings
    • H01S5/023—Mount members, e.g. sub-mount members
    • H01S5/02325—Mechanically integrated components on mount members or optical micro-benches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/022—Mountings; Housings
    • H01S5/023—Mount members, e.g. sub-mount members
    • H01S5/02325—Mechanically integrated components on mount members or optical micro-benches
    • H01S5/02326—Arrangements for relative positioning of laser diodes and optical components, e.g. grooves in the mount to fix optical fibres or lenses

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
DE69419550T 1993-03-26 1994-03-28 Optischer Kopf Expired - Lifetime DE69419550T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6833593 1993-03-26

Publications (2)

Publication Number Publication Date
DE69419550D1 true DE69419550D1 (de) 1999-08-26
DE69419550T2 DE69419550T2 (de) 2000-01-13

Family

ID=13370876

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69419550T Expired - Lifetime DE69419550T2 (de) 1993-03-26 1994-03-28 Optischer Kopf

Country Status (3)

Country Link
US (2) US5517479A (de)
EP (1) EP0617420B1 (de)
DE (1) DE69419550T2 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5804814A (en) * 1994-05-20 1998-09-08 Musha; Toru Optical pick-up head and integrated type optical unit for use in optical pick-up head
US5615200A (en) * 1992-09-10 1997-03-25 Kabushiki Kaisha Toshiba Light beam shaping device to change an anisotropic beam to an isotropic beam for reducing the size of an optical head
US5517479A (en) * 1993-03-26 1996-05-14 Matsushita Electronics Corporation Optical head including a semiconductor laser having a non-scatter incident area
JPH08235608A (ja) * 1995-02-23 1996-09-13 Sony Corp 光学装置
JPH08235663A (ja) * 1995-02-24 1996-09-13 Sony Corp 光学素子
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
GB2335785B (en) 1998-03-24 2002-09-18 Quantum Corp Multi-channel magnetic tape system having optical tracking servo
JP3521738B2 (ja) * 1998-04-08 2004-04-19 日本ビクター株式会社 光ピックアップ装置、エラー検出装置及びその検出方法
US6246535B1 (en) * 1998-11-13 2001-06-12 Quantum Corporation Optical apparatus for tracking a magnetic tape
JP2001014717A (ja) 1999-04-28 2001-01-19 Matsushita Electronics Industry Corp 光学装置
US7082006B1 (en) * 1999-08-10 2006-07-25 Storage Technology Corporation Compact optical tracking system for magnetic tape
US7064898B1 (en) * 1999-11-09 2006-06-20 Matsushita Electric Industrial Co., Ltd. Optoelectronic device
US6810057B1 (en) 1999-11-25 2004-10-26 Matsushita Electric Industrial Co., Ltd. Semiconductor device and optical pickup device
JP2002094168A (ja) * 2000-09-19 2002-03-29 Toshiba Corp 半導体レーザ装置及びその製造方法
US6967979B2 (en) * 2000-10-06 2005-11-22 Sharp Kabushiki Kaisha Semiconductor laser device, optical pickup and fabrication method of semiconductor laser device
CN1324585C (zh) * 2002-06-03 2007-07-04 索尼株式会社 双波长光学元件
US7187515B2 (en) * 2003-02-05 2007-03-06 Quantum Corporation Method and system for tracking magnetic media with embedded optical servo tracks
US6980390B2 (en) * 2003-02-05 2005-12-27 Quantum Corporation Magnetic media with embedded optical servo tracks
US7209427B2 (en) * 2003-06-19 2007-04-24 Matsushita Electric Industrial Co., Ltd. Optical pickup with reduced size
US7189484B2 (en) * 2003-12-31 2007-03-13 Samsung Electronics Co., Ltd. Reduced light scattering in projected images formed from electrographic toners
US10152992B1 (en) * 2018-02-09 2018-12-11 Sae Magnetics (H.K.) Ltd. Light source unit and thermally-assisted magnetic head

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742506A (en) * 1984-07-12 1988-05-03 Sony Corporation Tracking error detecting apparatus for an optical head with skew error reduction by using an inclined header portion
JPH063649B2 (ja) * 1984-07-13 1994-01-12 ソニー株式会社 光学式ヘツドのトラツキング誤差検出装置
EP0210582B1 (de) * 1985-07-29 1991-02-27 Mitsubishi Denki Kabushiki Kaisha Optische Kopfvorrichtung
US4906839A (en) * 1986-05-01 1990-03-06 Pencom International Corp. Hybrid surface emitting laser and detector
US4794585A (en) * 1986-05-06 1988-12-27 Lee Wai Hon Optical head having a hologram lens and polarizers for use with magneto-optic medium
JP2590904B2 (ja) * 1987-07-31 1997-03-19 ソニー株式会社 光学ヘッド装置
JPH0770065B2 (ja) * 1988-04-20 1995-07-31 シャープ株式会社 光ピックアップ装置
EP0612064B1 (de) * 1988-06-23 1997-10-29 Sharp Kabushiki Kaisha Optische Abtastvorrichtung
US5245620A (en) * 1990-04-28 1993-09-14 Rohm Co., Ltd. Laser diode system for reflecting and maintaining laser light within the system
JP3155287B2 (ja) * 1990-05-30 2001-04-09 株式会社リコー 光情報記録再生装置
EP0484887B1 (de) * 1990-11-07 1996-04-03 Fuji Electric Co., Ltd. Laserdiode mit einer Schutzschicht auf ihrer lichtemittierenden Endfläche
JP2865223B2 (ja) * 1990-12-28 1999-03-08 松下電子工業株式会社 光ピックアップ用偏光板および光ピックアップ装置
US5422870A (en) * 1991-09-27 1995-06-06 Matsushita Electric Industrial Co., Ltd. Optical pickup for information recording/reproducing apparatus
US5350917A (en) * 1991-12-27 1994-09-27 Sony Corporation Opto-magnetic recording polarization optical apparatus including a laser diode and a light absorbing film
US5465247A (en) * 1992-05-14 1995-11-07 Olympus Optical Co., Ltd. Optical head
JP3260426B2 (ja) * 1992-07-27 2002-02-25 松下電器産業株式会社 光学式ピックアップ装置
JP2960819B2 (ja) * 1992-07-29 1999-10-12 シャープ株式会社 光ピックアップ装置
JP3366676B2 (ja) * 1993-02-15 2003-01-14 松下電器産業株式会社 光学ヘッド
US5517479A (en) * 1993-03-26 1996-05-14 Matsushita Electronics Corporation Optical head including a semiconductor laser having a non-scatter incident area

Also Published As

Publication number Publication date
DE69419550T2 (de) 2000-01-13
EP0617420A1 (de) 1994-09-28
US5517479A (en) 1996-05-14
US5729519A (en) 1998-03-17
EP0617420B1 (de) 1999-07-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., KADOMA,

8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP