KR0121313Y1 - Optical pick-up device - Google Patents

Optical pick-up device Download PDF

Info

Publication number
KR0121313Y1
KR0121313Y1 KR96001898U KR19960001898U KR0121313Y1 KR 0121313 Y1 KR0121313 Y1 KR 0121313Y1 KR 96001898 U KR96001898 U KR 96001898U KR 19960001898 U KR19960001898 U KR 19960001898U KR 0121313 Y1 KR0121313 Y1 KR 0121313Y1
Authority
KR
South Korea
Prior art keywords
light beam
lens system
object lens
passed
reflected light
Prior art date
Application number
KR96001898U
Other languages
English (en)
Inventor
Akira Nakamura
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of KR0121313Y1 publication Critical patent/KR0121313Y1/ko

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
    • G11B7/1372—Lenses
    • 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
KR96001898U 1986-09-18 1996-02-08 Optical pick-up device KR0121313Y1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61220311A JP2633535B2 (ja) 1986-09-18 1986-09-18 光学ピツクアツプ装置

Publications (1)

Publication Number Publication Date
KR0121313Y1 true KR0121313Y1 (en) 1998-08-01

Family

ID=16749152

Family Applications (2)

Application Number Title Priority Date Filing Date
KR870010253A KR880004446A (ko) 1986-09-18 1987-09-16 광학 픽업장치
KR96001898U KR0121313Y1 (en) 1986-09-18 1996-02-08 Optical pick-up device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
KR870010253A KR880004446A (ko) 1986-09-18 1987-09-16 광학 픽업장치

Country Status (6)

Country Link
US (1) US4791625A (ko)
EP (1) EP0260569B1 (ko)
JP (1) JP2633535B2 (ko)
KR (2) KR880004446A (ko)
AT (1) ATE83088T1 (ko)
DE (1) DE3782895T2 (ko)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5208801A (en) * 1988-02-05 1993-05-04 Tandy Corporation Method and apparatus for correcting focus in an optical recording system
JP2591099B2 (ja) * 1988-09-29 1997-03-19 旭硝子株式会社 レーザ共振型光ピックアップ
FR2642883B1 (ko) * 1989-02-09 1995-06-02 Asahi Optical Co Ltd
EP0390116B1 (en) * 1989-03-31 1995-06-14 Kabushiki Kaisha Toshiba Optical information processing system
JPH03154239A (ja) * 1989-11-10 1991-07-02 Pioneer Electron Corp 光ディスクカッティング装置
JP2655923B2 (ja) * 1990-01-22 1997-09-24 シャープ株式会社 光ヘッド装置
AU7691391A (en) * 1990-04-23 1991-11-11 Tandy Corporation Method and apparatus for correcting focus in an optical recording system
JPH0777031B2 (ja) * 1991-10-16 1995-08-16 インターナショナル・ビジネス・マシーンズ・コーポレイション 収差補償装置
US5625609A (en) * 1995-03-13 1997-04-29 International Business Machines Corporation Multiple data layer optical disk drive system with fixed aberration correction and optimum interlayer spacing
US6192022B1 (en) * 1997-05-23 2001-02-20 U.S. Philips Corporation Focusing a light beam more than thirty focal depths from the aplanatic point with a plano-convex lens
JP2000132859A (ja) * 1998-10-23 2000-05-12 Fujitsu Ltd 光記憶装置及び光ピックアップ

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191462A (en) * 1978-04-24 1980-03-04 Polaroid Corporation Fixed focus exposure control apparatus with reverse spherical aberration corrective characteristic
FR2460022B1 (fr) * 1979-06-25 1987-09-11 Hitachi Ltd Systeme optique de reproduction d'informations
JPS566038U (ko) * 1979-06-25 1981-01-20
FR2470391A1 (fr) * 1979-11-21 1981-05-29 Thomson Csf Dispositif optique stigmatique d'emission-reception de rayonnements coherents et tete optique d'enregistrement-lecture comprenant un tel dispositif
JPS56145529A (en) * 1980-04-15 1981-11-12 Matsushita Electric Ind Co Ltd Signal recording and reproducing system
JPS595446A (ja) * 1982-07-02 1984-01-12 Matsushita Electric Ind Co Ltd 光学式ピツクアツプ装置
JPS5914145A (ja) * 1982-07-14 1984-01-25 Minolta Camera Co Ltd 光デイスク用光学装置
JPS59176715A (ja) * 1983-03-26 1984-10-06 Nippon Kogaku Kk <Nikon> 対物レンズ

Also Published As

Publication number Publication date
EP0260569A3 (en) 1989-05-10
JPS6374133A (ja) 1988-04-04
EP0260569B1 (en) 1992-12-02
ATE83088T1 (de) 1992-12-15
KR880004446A (ko) 1988-06-04
EP0260569A2 (en) 1988-03-23
DE3782895T2 (de) 1993-06-17
DE3782895D1 (de) 1993-01-14
US4791625A (en) 1988-12-13
JP2633535B2 (ja) 1997-07-23

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