JPH0555934B2 - - Google Patents

Info

Publication number
JPH0555934B2
JPH0555934B2 JP59082394A JP8239484A JPH0555934B2 JP H0555934 B2 JPH0555934 B2 JP H0555934B2 JP 59082394 A JP59082394 A JP 59082394A JP 8239484 A JP8239484 A JP 8239484A JP H0555934 B2 JPH0555934 B2 JP H0555934B2
Authority
JP
Japan
Prior art keywords
lens
light
optical axis
relay lens
focusing
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
JP59082394A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6022743A (ja
Inventor
Shunpei Tanaka
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.)
Olympus Corp
Original Assignee
Olympus Optical 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
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP8239484A priority Critical patent/JPS6022743A/ja
Publication of JPS6022743A publication Critical patent/JPS6022743A/ja
Publication of JPH0555934B2 publication Critical patent/JPH0555934B2/ja
Granted 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP8239484A 1984-04-24 1984-04-24 光学的に情報を記録したデイスク再生装置のピツクアツプ Granted JPS6022743A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8239484A JPS6022743A (ja) 1984-04-24 1984-04-24 光学的に情報を記録したデイスク再生装置のピツクアツプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8239484A JPS6022743A (ja) 1984-04-24 1984-04-24 光学的に情報を記録したデイスク再生装置のピツクアツプ

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2678A Division JPS5494007A (en) 1978-01-05 1978-01-05 Pickup for disc recorder recorded optically with information

Publications (2)

Publication Number Publication Date
JPS6022743A JPS6022743A (ja) 1985-02-05
JPH0555934B2 true JPH0555934B2 (en]) 1993-08-18

Family

ID=13773368

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8239484A Granted JPS6022743A (ja) 1984-04-24 1984-04-24 光学的に情報を記録したデイスク再生装置のピツクアツプ

Country Status (1)

Country Link
JP (1) JPS6022743A (en])

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62282286A (ja) * 1986-05-30 1987-12-08 Furuno Electric Co Ltd 流速測定方法
JPH01314987A (ja) * 1988-06-16 1989-12-20 Nissan Motor Co Ltd ドップラ式速度計
JP2537397B2 (ja) * 1989-03-30 1996-09-25 旭光学工業株式会社 光学式ピックアップ装置
KR910018991A (ko) * 1990-04-30 1991-11-30 정용문 부동형 광학헤드를 채택한 광학기기
WO2001037272A1 (fr) * 1999-11-18 2001-05-25 Fujitsu Limited Dispositif de stockage optique
JP2002228903A (ja) * 2001-01-30 2002-08-14 Olympus Optical Co Ltd 光学ユニット

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309888A1 (fr) * 1975-04-30 1976-11-26 Thomson Brandt Dispositif optique de projection et lecteur optique comportant un tel dispositif

Also Published As

Publication number Publication date
JPS6022743A (ja) 1985-02-05

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