DE69015376D1 - Optische Kopfanordnung zur Verwendung in einem optischen Scheibensystem. - Google Patents

Optische Kopfanordnung zur Verwendung in einem optischen Scheibensystem.

Info

Publication number
DE69015376D1
DE69015376D1 DE69015376T DE69015376T DE69015376D1 DE 69015376 D1 DE69015376 D1 DE 69015376D1 DE 69015376 T DE69015376 T DE 69015376T DE 69015376 T DE69015376 T DE 69015376T DE 69015376 D1 DE69015376 D1 DE 69015376D1
Authority
DE
Germany
Prior art keywords
head assembly
disk system
optical
optical disk
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 - Fee Related
Application number
DE69015376T
Other languages
English (en)
Other versions
DE69015376T2 (de
Inventor
Tetsuo Saimi
Kazuo Momoo
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 JP1012328A external-priority patent/JPH02193344A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69015376D1 publication Critical patent/DE69015376D1/de
Publication of DE69015376T2 publication Critical patent/DE69015376T2/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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
DE69015376T 1989-01-20 1990-01-18 Optische Kopfanordnung zur Verwendung in einem optischen Scheibensystem. Expired - Fee Related DE69015376T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1232989 1989-01-20
JP1012328A JPH02193344A (ja) 1989-01-20 1989-01-20 光ピックアップ

Publications (2)

Publication Number Publication Date
DE69015376D1 true DE69015376D1 (de) 1995-02-09
DE69015376T2 DE69015376T2 (de) 1995-05-24

Family

ID=26347931

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69015376T Expired - Fee Related DE69015376T2 (de) 1989-01-20 1990-01-18 Optische Kopfanordnung zur Verwendung in einem optischen Scheibensystem.

Country Status (4)

Country Link
US (1) US5151889A (de)
EP (1) EP0379363B1 (de)
KR (1) KR930000040B1 (de)
DE (1) DE69015376T2 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0487042A (ja) * 1990-07-31 1992-03-19 Sony Corp 光学ピックアップ装置
US5751480A (en) * 1991-04-09 1998-05-12 Canon Kabushiki Kaisha Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit
US5657164A (en) * 1991-05-28 1997-08-12 Discovision Associates Optical beamsplitter
US5331622A (en) * 1991-05-28 1994-07-19 Applied Magnetics Corporation Compact optical head
GB2256725B (en) * 1991-06-10 1995-01-18 Alps Electric Co Ltd Polarising light separation element and light receiving optical device using same
JPH05128627A (ja) * 1991-11-06 1993-05-25 Pioneer Electron Corp 光学式記録再生装置の光ピツクアツプ
US5559639A (en) * 1992-04-20 1996-09-24 Asahi Kogaku Kogyo Kabushiki Kaisha Beam receiving position adjusting device
JPH0612719A (ja) * 1992-06-29 1994-01-21 Canon Inc 光ヘッド及び情報読取装置
JPH06176426A (ja) * 1992-12-08 1994-06-24 Sony Corp 光学ピックアップ装置
JPH0973637A (ja) * 1995-09-06 1997-03-18 Hitachi Ltd 光ディスク信号処理装置
JP3522486B2 (ja) * 1997-03-19 2004-04-26 パイオニア株式会社 光ピックアップ装置
JPH11110808A (ja) * 1997-10-06 1999-04-23 Fujitsu Ltd 光学的情報記憶装置
JP3819756B2 (ja) * 2001-10-23 2006-09-13 富士通株式会社 光情報処理装置
US6983334B2 (en) 2001-11-07 2006-01-03 International Business Machines Corporation Method and system of tracking missing packets in a multicast TFTP environment
CN101073113A (zh) * 2004-12-06 2007-11-14 皇家飞利浦电子股份有限公司 2dos信号的最优检测
CN101116141A (zh) * 2005-02-03 2008-01-30 皇家飞利浦电子股份有限公司 用于多束光学扫描设备的光点尺寸的聚焦误差检测
US20120050859A1 (en) * 2010-08-25 2012-03-01 Walsin Lihwa Corporation Polarized light converting system
US9921399B2 (en) * 2015-03-31 2018-03-20 General Electric Company System and method for continuous, asynchronous autofocus of optical instruments
US10641939B2 (en) * 2017-05-19 2020-05-05 Ayar Labs, Inc. Beam turning assembly with polarization splitter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4694447A (en) * 1984-07-12 1987-09-15 International Business Machines Corp. Optical signal recorders employing two lasers and methods therefor
US4797868A (en) * 1985-05-15 1989-01-10 Kabushiki Kaisha Toshiba Optical system employing a laser beam for focusing, tracking and transferring information signals with respect to a magneto-optical memory
KR950005031B1 (ko) * 1986-02-24 1995-05-17 소니 가부시끼가이샤 초점 검출 장치
EP0318912B1 (de) * 1987-11-30 1994-02-02 Nec Corporation Optischer Kopf
DE68909663T2 (de) * 1988-04-26 1994-04-07 Philips Nv Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers.

Also Published As

Publication number Publication date
DE69015376T2 (de) 1995-05-24
EP0379363A3 (de) 1991-07-17
EP0379363B1 (de) 1994-12-28
EP0379363A2 (de) 1990-07-25
KR900012220A (ko) 1990-08-03
KR930000040B1 (ko) 1993-01-06
US5151889A (en) 1992-09-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee