DE68911730D1 - Optisches Wiedergabegerät. - Google Patents

Optisches Wiedergabegerät.

Info

Publication number
DE68911730D1
DE68911730D1 DE89303962T DE68911730T DE68911730D1 DE 68911730 D1 DE68911730 D1 DE 68911730D1 DE 89303962 T DE89303962 T DE 89303962T DE 68911730 T DE68911730 T DE 68911730T DE 68911730 D1 DE68911730 D1 DE 68911730D1
Authority
DE
Germany
Prior art keywords
playback device
optical playback
optical
playback
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
DE89303962T
Other languages
English (en)
Other versions
DE68911730T2 (de
Inventor
Yukio Kurata
Yoshio Yoshida
Toshiya Nagahama
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE68911730D1 publication Critical patent/DE68911730D1/de
Publication of DE68911730T2 publication Critical patent/DE68911730T2/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
    • G11B7/08—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
    • 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
    • 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
    • G11B7/0916—Foucault or knife-edge methods
    • 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
    • G11B7/1353—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
    • G11B7/12—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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
DE68911730T 1988-04-20 1989-04-20 Optisches Wiedergabegerät. Expired - Lifetime DE68911730T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63097496A JPH0770065B2 (ja) 1988-04-20 1988-04-20 光ピックアップ装置

Publications (2)

Publication Number Publication Date
DE68911730D1 true DE68911730D1 (de) 1994-02-10
DE68911730T2 DE68911730T2 (de) 1994-07-21

Family

ID=14193874

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68911730T Expired - Lifetime DE68911730T2 (de) 1988-04-20 1989-04-20 Optisches Wiedergabegerät.

Country Status (6)

Country Link
US (1) US5111449A (de)
EP (1) EP0338840B1 (de)
JP (1) JPH0770065B2 (de)
KR (1) KR920005263B1 (de)
CA (1) CA1329262C (de)
DE (1) DE68911730T2 (de)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983017A (en) * 1988-08-02 1991-01-08 Sharp Kabushiki Kaisha Optical head device for reading information stored in a recording medium
JPH083910B2 (ja) * 1989-01-13 1996-01-17 シャープ株式会社 光ピックアップ装置
JPH087872B2 (ja) * 1990-01-19 1996-01-29 松下電器産業株式会社 光ヘッド装置
JP2655923B2 (ja) * 1990-01-22 1997-09-24 シャープ株式会社 光ヘッド装置
JP2711010B2 (ja) * 1990-04-04 1998-02-10 株式会社日本コンラックス 光学ヘッド
DE69128808T2 (de) * 1990-04-12 1998-07-23 Matsushita Electric Ind Co Ltd Optischer Kopf mit hologrammverbundener Objektivlinse
US5202869A (en) * 1990-04-20 1993-04-13 Sharp Kabushiki Kaisha Optical head device including diffraction grating
JPH0721869B2 (ja) * 1990-04-20 1995-03-08 シャープ株式会社 光ピックアップ装置
JP2656136B2 (ja) * 1990-05-29 1997-09-24 シャープ株式会社 光ピックアップ装置
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
JP2776487B2 (ja) * 1992-01-28 1998-07-16 シャープ株式会社 光学式情報記録再生装置
CA2088701C (en) * 1992-02-05 1998-01-27 Yoshio Yoshida Optical information reproducing apparatus
DE69327369T2 (de) * 1992-02-07 2000-06-21 Sony Corp Optisches abtastgerät für eine magneto-optische speicherung
DE69319673T2 (de) * 1992-08-12 1999-02-25 Philips Electronics Nv Einrichtung zur optischen Abtastung einer Oberfläche
KR940020325A (ko) * 1993-02-08 1994-09-15 이헌조 광픽업장치
US5517479A (en) * 1993-03-26 1996-05-14 Matsushita Electronics Corporation Optical head including a semiconductor laser having a non-scatter incident area
JPH07114746A (ja) * 1993-08-25 1995-05-02 Sony Corp 光学装置
JP3541416B2 (ja) * 1994-03-08 2004-07-14 ソニー株式会社 光学装置
JPH09265639A (ja) * 1996-01-23 1997-10-07 Sony Corp 光学ピックアップ装置
US5652744A (en) * 1996-02-08 1997-07-29 Industrial Technology Research Institute Single surface diffractive element for optical pickup heads
US6556533B1 (en) * 1996-10-01 2003-04-29 Matsushita Electric Industrial Co., Ltd. Optical pickup device
JP2002505767A (ja) * 1998-04-17 2002-02-19 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 二つのレンズ要素からなるレンズシステムの製造方法
US6445671B1 (en) * 1998-06-30 2002-09-03 Kabushiki Kaisha Sankyo Seiki Seisakusho Optical pickup device having a shielding protection
EP0990927A3 (de) 1998-09-28 2000-12-13 Sharp Kabushiki Kaisha Beugungsgitter mit mehreren Gittern verschiedener Perioden zur Erzeugung von Mehrfachstrahlen und optischer Abtastkopf mit einem solchen Beugungsgitter
JP3545233B2 (ja) * 1998-12-08 2004-07-21 シャープ株式会社 球面収差検出装置および光ピックアップ装置
JP2001014717A (ja) * 1999-04-28 2001-01-19 Matsushita Electronics Industry Corp 光学装置
US20050068864A1 (en) * 1999-07-08 2005-03-31 Samsung Electronics Co., Ltd. Method and apparatus for tracking error detection in optical disk driver
TW501116B (en) * 2000-07-05 2002-09-01 Matsushita Electric Ind Co Ltd Optical device, optical semiconductor device, and optical information processor comprising them
JP2002250809A (ja) * 2001-02-26 2002-09-06 Alps Electric Co Ltd 光学部材およびそれを用いた光ピックアップ
KR100452293B1 (ko) * 2002-01-07 2004-10-08 삼성전기주식회사 광 픽업장치
JP3977234B2 (ja) * 2002-04-24 2007-09-19 シャープ株式会社 光ピックアップ
KR100480786B1 (ko) * 2002-09-02 2005-04-07 삼성전자주식회사 커플러를 가지는 집적형 광 헤드
US7209427B2 (en) * 2003-06-19 2007-04-24 Matsushita Electric Industrial Co., Ltd. Optical pickup with reduced size
JP2006059416A (ja) * 2004-08-18 2006-03-02 Sony Corp 光ディスク装置およびその制御方法
US20090206104A1 (en) * 2006-07-18 2009-08-20 Loranger Linda S Dispensing system for dispensing individual portions of a food product from a food product container

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8502835A (nl) * 1985-10-17 1987-05-18 Philips Nv Inrichting voor het met optische straling aftasten van een informatievlak.
EP0222238B2 (de) * 1985-11-11 1998-02-11 Sharp Kabushiki Kaisha Optischer Kopf
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.
JPS6356819A (ja) * 1986-08-27 1988-03-11 Nec Corp 光ヘツド装置
KR950005031B1 (ko) * 1986-02-24 1995-05-17 소니 가부시끼가이샤 초점 검출 장치
JP2515504B2 (ja) * 1986-08-05 1996-07-10 三菱電機株式会社 光学式ヘツド装置
DE3776945D1 (de) * 1986-04-18 1992-04-09 Mitsubishi Electric Corp Optischer kopf.
JPS62251963A (ja) * 1986-04-25 1987-11-02 Casio Comput Co Ltd Ｉｃカ−ドの認証方式
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
KR900008380B1 (ko) * 1986-07-01 1990-11-17 미쓰비시덴기 가부시기 가이샤 광학식 헤드장치
NL8601974A (nl) * 1986-08-01 1988-03-01 Philips Nv Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.
JPS63285732A (ja) * 1987-05-19 1988-11-22 Pioneer Electronic Corp 光学式ピックアップ装置
NL8702245A (nl) * 1987-09-21 1989-04-17 Philips Nv Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.
JP2800156B2 (ja) * 1987-10-06 1998-09-21 三菱電機株式会社 光学式ヘッド装置
JPH01151022A (ja) * 1987-12-09 1989-06-13 Sharp Corp 光ピックアップ装置

Also Published As

Publication number Publication date
US5111449A (en) 1992-05-05
DE68911730T2 (de) 1994-07-21
KR920005263B1 (ko) 1992-06-29
EP0338840B1 (de) 1993-12-29
KR890016525A (ko) 1989-11-29
CA1329262C (en) 1994-05-03
JPH0770065B2 (ja) 1995-07-31
EP0338840A3 (en) 1990-07-04
EP0338840A2 (de) 1989-10-25
JPH01269239A (ja) 1989-10-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: PATENTANWAELTE MUELLER & HOFFMANN, 81667 MUENCHEN