DE3882872D1 - Optische lesekopf. - Google Patents

Optische lesekopf.

Info

Publication number
DE3882872D1
DE3882872D1 DE8888309211T DE3882872T DE3882872D1 DE 3882872 D1 DE3882872 D1 DE 3882872D1 DE 8888309211 T DE8888309211 T DE 8888309211T DE 3882872 T DE3882872 T DE 3882872T DE 3882872 D1 DE3882872 D1 DE 3882872D1
Authority
DE
Germany
Prior art keywords
reading head
optical reading
optical
head
reading
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
DE8888309211T
Other languages
English (en)
Other versions
DE3882872T2 (de
Inventor
Makoto Kato
Tetsuo Saimi
Shunji Ohara
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 JP62251026A external-priority patent/JPH0194542A/ja
Priority claimed from JP62251025A external-priority patent/JPH07101519B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE3882872D1 publication Critical patent/DE3882872D1/de
Application granted granted Critical
Publication of DE3882872T2 publication Critical patent/DE3882872T2/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
    • G11B7/135—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
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
DE88309211T 1987-10-05 1988-10-04 Optische Lesekopf. Expired - Fee Related DE3882872T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62251026A JPH0194542A (ja) 1987-10-05 1987-10-05 光ヘッド装置
JP62251025A JPH07101519B2 (ja) 1987-10-05 1987-10-05 光ヘッド装置

Publications (2)

Publication Number Publication Date
DE3882872D1 true DE3882872D1 (de) 1993-09-09
DE3882872T2 DE3882872T2 (de) 1993-11-11

Family

ID=26540023

Family Applications (1)

Application Number Title Priority Date Filing Date
DE88309211T Expired - Fee Related DE3882872T2 (de) 1987-10-05 1988-10-04 Optische Lesekopf.

Country Status (4)

Country Link
US (1) US4929823A (de)
EP (1) EP0311340B1 (de)
KR (1) KR910006649B1 (de)
DE (1) DE3882872T2 (de)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01311428A (ja) * 1988-06-09 1989-12-15 Matsushita Electric Ind Co Ltd 光ヘッド装置及びこれを用いた光情報装置
US5315574A (en) * 1988-10-28 1994-05-24 Matsushita Electric Industrial Co., Ltd. Optical head with polarized beam hologram
US5062094A (en) * 1988-11-07 1991-10-29 Minolta Camera Kabushiki Kaisha Optical head for optical disk system
US5161139A (en) * 1989-01-06 1992-11-03 Kabushiki Kaisha Toshiba Focusing error detecting apparatus
DE69018503T2 (de) * 1989-05-02 1995-08-17 Pioneer Electronic Corp Optischer Kopf.
US5126988A (en) * 1989-05-22 1992-06-30 Nhk Spring Co., Ltd. Optical head structure
KR940001999B1 (ko) * 1989-06-06 1994-03-12 샤프 가부시끼가이샤 광 픽업장치
JP2508387B2 (ja) * 1989-10-16 1996-06-19 凸版印刷株式会社 回折格子パタ―ンを有するディスプレイの作製方法
DE69128808T2 (de) * 1990-04-12 1998-07-23 Matsushita Electric Ind Co Ltd Optischer Kopf mit hologrammverbundener Objektivlinse
DE4012927C2 (de) * 1990-04-24 1995-10-12 Daimler Benz Aerospace Ag Meß-Verfahren und -Vorrichtung zur dreidimensionalen Lageregelung des Brennpunktes eines Hochenergie-Laserstrahls
JP2684822B2 (ja) * 1990-06-06 1997-12-03 松下電器産業株式会社 光ピックアップヘッド装置
JPH0460933A (ja) * 1990-06-26 1992-02-26 Matsushita Electric Ind Co Ltd 光ピックアップヘッド装置
JP3028854B2 (ja) * 1990-07-18 2000-04-04 セイコーエプソン株式会社 光ヘッド及び光記憶再生装置
NL9002007A (nl) * 1990-09-12 1992-04-01 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
JPH04137232A (ja) * 1990-09-27 1992-05-12 Sharp Corp 光ピックアップ装置
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
JPH04364231A (ja) * 1991-01-07 1992-12-16 Toshiba Corp 光学ヘッド装置
JPH04318333A (ja) * 1991-04-17 1992-11-09 Matsushita Electric Ind Co Ltd 光ヘッド装置
KR930007024B1 (ko) * 1991-05-13 1993-07-26 삼성전자 주식회사 광픽업
JP3241781B2 (ja) * 1991-08-22 2001-12-25 松下電器産業株式会社 光ヘッド装置および光情報記録装置、光情報再生装置
US5351230A (en) * 1991-10-23 1994-09-27 Nippon Steel Corporation Optical information system focal point displacement detecting means having Fresnel zone plates with rectilinear grating
JP2993248B2 (ja) * 1991-11-29 1999-12-20 新日本製鐵株式会社 光ヘッドの誤差検出装置
JPH0695038A (ja) * 1992-03-19 1994-04-08 Matsushita Electric Ind Co Ltd 超解像走査光学装置、光学装置の超解像用光源装置及び光学装置の超解像用フィルター
JPH05282723A (ja) * 1992-03-31 1993-10-29 Matsushita Electric Ind Co Ltd 光磁気ヘッド装置
JPH05290403A (ja) * 1992-04-08 1993-11-05 Matsushita Electric Ind Co Ltd 光ピックアップヘッド装置
KR970008231B1 (en) * 1992-06-03 1997-05-22 Lg Electronics Inc Optical pick-up apparatus
KR950005957B1 (ko) * 1992-06-04 1995-06-07 주식회사금성사 광 픽업 시스템
JPH0612719A (ja) * 1992-06-29 1994-01-21 Canon Inc 光ヘッド及び情報読取装置
US5412631A (en) * 1992-07-10 1995-05-02 Matsushita Electric Industrial Co., Ltd. Optical head apparatus for storing, reading or erasing information, and optical information reproducing method and optical information apparatus for optically reading information stored in an optical memory
EP1120779B1 (de) * 1992-08-07 2003-02-26 Matsushita Electric Industrial Co., Ltd. Optisches Speichergerät
KR950005033B1 (ko) * 1992-11-06 1995-05-17 주식회사금성사 광픽업 장치
JP3238497B2 (ja) * 1992-11-12 2001-12-17 松下電器産業株式会社 光ピックアップヘッド装置
JP3362896B2 (ja) * 1993-01-25 2003-01-07 ソニー株式会社 光ピックアップ及び光ディスク装置
US5815293A (en) * 1993-02-01 1998-09-29 Matsushita Electric Industrial Co., Ltd. Compound objective lens having two focal points
US6072607A (en) * 1993-10-15 2000-06-06 Sanyo Electric Co., Ltd. Optical pickup device
JPH07311961A (ja) * 1994-05-16 1995-11-28 Nippon Steel Corp 光ピックアップ
US5757754A (en) * 1994-06-30 1998-05-26 Matsushita Electric Industrial Co., Ltd. Holographic optical head
KR100214046B1 (ko) 1995-03-27 1999-08-02 마츠시타 덴끼 산교 가부시키가이샤 초해상 광헤드장치
US6222812B1 (en) 1996-08-29 2001-04-24 Samsung Electronics Co., Ltd. Optical pickup using an optical phase plate
US6639889B1 (en) 1997-02-13 2003-10-28 Samsung Electronics Co., Ltd. Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats
US5896359A (en) * 1997-03-18 1999-04-20 Northrop Grumman Corporation Spinning disc volume holographic memory
US6304540B1 (en) 1998-03-30 2001-10-16 Samsung Electronics Co., Ltd. Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
KR100375514B1 (ko) * 1997-10-20 2003-11-28 삼성전기주식회사 광픽업장치
JPH11134669A (ja) 1997-10-30 1999-05-21 Nec Corp 光ヘッド装置と光情報読み取り方法
US6999397B2 (en) * 2001-03-23 2006-02-14 Daewoo Electronics Corp. Holographic digital data storage system compatible with holographic and reflective medium
GB0119603D0 (en) * 2001-08-13 2005-04-06 Bae Systems Plc Improvements in or relating to detectors
JP4032732B2 (ja) * 2001-12-20 2008-01-16 ソニー株式会社 光ピックアップ装置
KR20030093683A (ko) * 2002-06-05 2003-12-11 삼성전자주식회사 호환형 광픽업
DE10319268A1 (de) * 2003-04-25 2004-12-02 Carl Zeiss Sms Gmbh Diffraktiver Strahlteiler für Abbildungssysteme
WO2006109414A1 (ja) * 2005-03-30 2006-10-19 Pioneer Corporation 光学式記録再生装置およびフォーカスサーチ方法
CA2533225C (en) * 2006-01-19 2016-03-22 Technologies Ltrim Inc. A tunable semiconductor component provided with a current barrier
JP2007242115A (ja) * 2006-03-07 2007-09-20 Konica Minolta Opto Inc 光ピックアップ装置
EP2020004A1 (de) * 2006-05-12 2009-02-04 Koninklijke Philips Electronics N.V. Optische scan-einrichtung
US10388098B2 (en) * 2014-02-07 2019-08-20 Korea Institute Of Machinery & Materials Apparatus and method of processing anti-counterfeiting pattern, and apparatus and method of detecting anti-counterfeiting pattern

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS573235A (en) * 1980-06-07 1982-01-08 Ricoh Co Ltd Focus controlling method
JPS6183523A (ja) * 1984-09-13 1986-04-28 Olympus Optical Co Ltd ホログラフイツク光偏向器
NL8502835A (nl) * 1985-10-17 1987-05-18 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
JPS6297144A (ja) * 1985-10-24 1987-05-06 Mitsubishi Electric Corp 光ピツクアツプ
DE3679648D1 (de) * 1985-12-10 1991-07-11 Nec Corp Optischer kopf mit einem beugungsgitter zum richten von zwei oder mehreren gebeugten lichtstrahlen auf optische detektoren.
US4731772A (en) * 1986-05-06 1988-03-15 Lee Wai Hon Optical head using hologram lens for both beam splitting and focus error detection functions
NL8601974A (nl) * 1986-08-01 1988-03-01 Philips Nv Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.
US4789977A (en) * 1986-11-06 1988-12-06 Laser Magnetic Storage International Company Optical data recording device
JPS63201924A (ja) * 1987-02-18 1988-08-22 Matsushita Electric Ind Co Ltd 光情報ピツクアツプ装置

Also Published As

Publication number Publication date
KR890007240A (ko) 1989-06-19
DE3882872T2 (de) 1993-11-11
EP0311340A3 (en) 1990-06-20
KR910006649B1 (ko) 1991-08-30
EP0311340B1 (de) 1993-08-04
EP0311340A2 (de) 1989-04-12
US4929823A (en) 1990-05-29

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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