JPH0548535B2 - - Google Patents

Info

Publication number
JPH0548535B2
JPH0548535B2 JP59170440A JP17044084A JPH0548535B2 JP H0548535 B2 JPH0548535 B2 JP H0548535B2 JP 59170440 A JP59170440 A JP 59170440A JP 17044084 A JP17044084 A JP 17044084A JP H0548535 B2 JPH0548535 B2 JP H0548535B2
Authority
JP
Japan
Prior art keywords
dividing line
photodetector
divided
optical
optical axis
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
JP59170440A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6150227A (ja
Inventor
Chohei Hirano
Motonobu Fukatsu
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.)
Akai Electric Co Ltd
Original Assignee
Akai Electric 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 Akai Electric Co Ltd filed Critical Akai Electric Co Ltd
Priority to JP17044084A priority Critical patent/JPS6150227A/ja
Publication of JPS6150227A publication Critical patent/JPS6150227A/ja
Publication of JPH0548535B2 publication Critical patent/JPH0548535B2/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
    • 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

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP17044084A 1984-08-17 1984-08-17 光ピツクアツプ装置 Granted JPS6150227A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17044084A JPS6150227A (ja) 1984-08-17 1984-08-17 光ピツクアツプ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17044084A JPS6150227A (ja) 1984-08-17 1984-08-17 光ピツクアツプ装置

Publications (2)

Publication Number Publication Date
JPS6150227A JPS6150227A (ja) 1986-03-12
JPH0548535B2 true JPH0548535B2 (enrdf_load_stackoverflow) 1993-07-21

Family

ID=15904956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17044084A Granted JPS6150227A (ja) 1984-08-17 1984-08-17 光ピツクアツプ装置

Country Status (1)

Country Link
JP (1) JPS6150227A (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0622063B2 (ja) * 1986-06-10 1994-03-23 日本電気株式会社 光ヘツド装置
JPH0622062B2 (ja) * 1986-06-10 1994-03-23 日本電気株式会社 光ヘツド装置
JPH0750532B2 (ja) * 1986-05-26 1995-05-31 日本電気株式会社 光ヘツド装置
JPH0329121A (ja) * 1989-06-26 1991-02-07 Matsushita Electric Ind Co Ltd 光学ヘッド

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956234A (ja) * 1982-09-24 1984-03-31 Sony Corp 光学式再生装置

Also Published As

Publication number Publication date
JPS6150227A (ja) 1986-03-12

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