DE3280232D1 - Optischer kopf. - Google Patents

Optischer kopf.

Info

Publication number
DE3280232D1
DE3280232D1 DE8282105430T DE3280232T DE3280232D1 DE 3280232 D1 DE3280232 D1 DE 3280232D1 DE 8282105430 T DE8282105430 T DE 8282105430T DE 3280232 T DE3280232 T DE 3280232T DE 3280232 D1 DE3280232 D1 DE 3280232D1
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
DE8282105430T
Other languages
English (en)
Inventor
Hideo Ando
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.)
Toshiba Corp
Original Assignee
Toshiba 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 JP56096198A external-priority patent/JPS57210455A/ja
Priority claimed from JP14654481A external-priority patent/JPS5848239A/ja
Priority claimed from JP14654581A external-priority patent/JPS5848240A/ja
Priority claimed from JP56146541A external-priority patent/JPS5848236A/ja
Priority claimed from JP56168963A external-priority patent/JPS5870431A/ja
Application filed by Toshiba Corp filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE3280232D1 publication Critical patent/DE3280232D1/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
    • G11B7/0908—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
    • 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
    • G11B7/1372—Lenses
    • G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
    • 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 Head (AREA)
  • Optical Recording Or Reproduction (AREA)
DE8282105430T 1981-06-22 1982-06-21 Optischer kopf. Expired - Lifetime DE3280232D1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP56096198A JPS57210455A (en) 1981-06-22 1981-06-22 Out-of-focus detecting method
JP14654481A JPS5848239A (ja) 1981-09-17 1981-09-17 光学ヘツド
JP14654581A JPS5848240A (ja) 1981-09-17 1981-09-17 光学ヘツド
JP56146541A JPS5848236A (ja) 1981-09-17 1981-09-17 光学ヘツド
JP56168963A JPS5870431A (ja) 1981-10-22 1981-10-22 光学ヘツド

Publications (1)

Publication Number Publication Date
DE3280232D1 true DE3280232D1 (de) 1990-09-27

Family

ID=27525777

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282105430T Expired - Lifetime DE3280232D1 (de) 1981-06-22 1982-06-21 Optischer kopf.

Country Status (3)

Country Link
US (1) US4517666A (de)
EP (1) EP0068390B1 (de)
DE (1) DE3280232D1 (de)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070552B1 (de) * 1981-07-20 1990-06-27 Kabushiki Kaisha Toshiba Optischer Kopf
DE3280137D1 (de) * 1981-09-17 1990-04-19 Toshiba Kawasaki Kk Ein optischer kopf.
JPS5911551A (ja) * 1982-07-12 1984-01-21 Toshiba Corp 光学式情報記憶媒体
US4654515A (en) * 1983-05-28 1987-03-31 Kabushiki Kaisha Toshiba Optical head for focussing a light beam on an information recording medium
JPS60197950A (ja) * 1984-03-22 1985-10-07 Toshiba Corp 光学ヘツド
JPS60253027A (ja) * 1984-05-29 1985-12-13 Canon Inc 光学的情報処理装置
US4672188A (en) * 1985-08-05 1987-06-09 International Business Machines Corporation Focus detector for optical apparatus
EP0253613B1 (de) * 1986-07-14 1991-11-21 Sharp Kabushiki Kaisha Optischer Kopf
JPS641125A (en) * 1987-06-23 1989-01-05 Csk Corp Error signal generating circuit
US5827821A (en) * 1987-12-10 1998-10-27 The Burnham Institute Conformationally stabilized cell adhesion peptides
AU639409B2 (en) * 1987-12-10 1993-07-29 La Jolla Cancer Research Foundation Conformationally stabilized cell adhesion peptides
JPH01292631A (ja) * 1988-05-18 1989-11-24 Nakamichi Corp トラッキング制御方法
US5172366A (en) * 1988-09-19 1992-12-15 Pioneer Electronic Corporation Optical information reproducing apparatus with selective photodetector output
US5072437A (en) * 1988-09-19 1991-12-10 Pioneer Electronic Corporation Optical information reproducing apparatus
US5780303A (en) * 1990-04-06 1998-07-14 La Jolla Cancer Research Foundation Method and composition for treating thrombosis
JPH05509294A (ja) * 1990-04-06 1993-12-22 ラ　ホヤ　キャンサー　リサーチ　ファウンデーション 血栓症治療のための方法および組成物
US5648330A (en) * 1990-04-06 1997-07-15 La Jolla Cancer Research Foundation Method and composition for treating vascular graft occlusion
US5612311A (en) 1990-04-06 1997-03-18 La Jolla Cancer Research Foundation Method and composition for treating thrombosis
US6521594B1 (en) 1990-04-06 2003-02-18 La Jolla Cancer Research Foundation Method and composition for treating thrombosis
JPH04155304A (ja) * 1990-10-18 1992-05-28 Ricoh Co Ltd 集光位置検出装置
JPH05242512A (ja) * 1991-12-19 1993-09-21 Matsushita Electric Ind Co Ltd 光ディスク装置
US5406541A (en) * 1992-12-29 1995-04-11 Eastman Kodak Company Apparatus and method for a dual half-aperture focus sensor system
US5360970A (en) * 1992-12-29 1994-11-01 Eastman Kodak Company Apparatus and method for a single return path signal sensor system
US5353272A (en) * 1992-12-29 1994-10-04 Eastman Kodak Company Apparatus and method for a modified half-aperture focus/tracking/data sensor system
US6178151B1 (en) * 1997-04-10 2001-01-23 Matsushita Electric Industrial Co., Ltd. Optical head having a reproducing optical system and filter formed by light passing therethrough
KR100335408B1 (ko) * 1998-03-03 2002-08-21 삼성전자 주식회사 포커스옵셋조정가능한광픽업장치
US20030085334A1 (en) * 2000-11-15 2003-05-08 Yakov Reznichenko Focusing system and method for use in imaging systems
JP2004348854A (ja) * 2003-05-22 2004-12-09 Sankyo Seiki Mfg Co Ltd 光ヘッド装置
JP2007079055A (ja) * 2005-09-13 2007-03-29 Canon Inc オートフォーカス結像光学系及び撮像装置
DE102010030430B4 (de) * 2010-06-23 2015-01-29 Leica Microsystems Cms Gmbh Triangulierende Autofokuseinrichtung für Mikroskope und Verwendungen hiervon

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623024A (en) * 1968-02-09 1971-11-23 Us Army Signal recovery system using optical mixing
AR205243A1 (es) * 1972-05-11 1976-04-21 Philips Nv Aparato para la lectura de un portador de grabacion reflector plano
NL7410642A (nl) * 1974-08-08 1976-02-10 Philips Nv Opto-elektronisch fokusseringsdetektiestelsel.
FR2325953A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Senseur optique de focalisation et dispositif de focalisation comportant un tel senseur
FR2325987A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Dispositif de lecture optique d'un enregistrement
US4110607A (en) * 1975-12-22 1978-08-29 Victor Company Of Japan, Ltd. System for detecting height fluctuations of a surface on a recording medium in an optical recording or reproducing apparatus
JPS6038771B2 (ja) * 1978-06-19 1985-09-03 パイオニア株式会社 光学式情報読取装置のサ−ボ装置
JPS55139642A (en) * 1979-04-18 1980-10-31 Matsushita Electric Ind Co Ltd Optical information recording and reproducing device
JPS55142423A (en) * 1979-04-25 1980-11-07 Mitsubishi Electric Corp Detector of focus position for optical stylus
GB2057218B (en) * 1979-06-25 1984-02-29 Olympus Optical Co Detecting focussing error
JPS567246A (en) * 1979-06-25 1981-01-24 Olympus Optical Co Ltd Method and unit for focus detection
US4437177A (en) * 1979-11-12 1984-03-13 Nippon Telegraph & Telephone Public Corporation Small-sized video or audio pickup device having a beam deflector disposed within a focusing device support
JPS56133704A (en) * 1980-03-24 1981-10-20 Matsushita Electric Ind Co Ltd Focus error detector
US4357533A (en) * 1980-07-14 1982-11-02 Discovision Associates Focus detector for an optical disc playback system
JPS5744236A (en) * 1980-08-29 1982-03-12 Matsushita Electric Ind Co Ltd Optical information reproducer

Also Published As

Publication number Publication date
EP0068390A3 (en) 1985-01-09
EP0068390A2 (de) 1983-01-05
US4517666A (en) 1985-05-14
EP0068390B1 (de) 1990-08-22

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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)