JPH0422287B2 - - Google Patents

Info

Publication number
JPH0422287B2
JPH0422287B2 JP58140139A JP14013983A JPH0422287B2 JP H0422287 B2 JPH0422287 B2 JP H0422287B2 JP 58140139 A JP58140139 A JP 58140139A JP 14013983 A JP14013983 A JP 14013983A JP H0422287 B2 JPH0422287 B2 JP H0422287B2
Authority
JP
Japan
Prior art keywords
disk
lens
photodetector
optical
light source
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
JP58140139A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6032142A (ja
Inventor
Akio Yamakawa
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.)
Sony Corp
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
Priority to JP58140139A priority Critical patent/JPS6032142A/ja
Priority to AU31108/84A priority patent/AU575332B2/en
Priority to DE8484305096T priority patent/DE3471191D1/de
Priority to AT84305096T priority patent/ATE34243T1/de
Priority to EP84305096A priority patent/EP0133027B1/en
Priority to CA000459882A priority patent/CA1223348A/en
Publication of JPS6032142A publication Critical patent/JPS6032142A/ja
Priority to US07/045,239 priority patent/US4780865A/en
Publication of JPH0422287B2 publication Critical patent/JPH0422287B2/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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
JP58140139A 1983-07-29 1983-07-30 光学式ディスク再生装置 Granted JPS6032142A (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP58140139A JPS6032142A (ja) 1983-07-30 1983-07-30 光学式ディスク再生装置
AU31108/84A AU575332B2 (en) 1983-07-29 1984-07-24 Optical disk pick-up
DE8484305096T DE3471191D1 (en) 1983-07-29 1984-07-26 Optical information reproducing apparatus
AT84305096T ATE34243T1 (de) 1983-07-29 1984-07-26 Geraet zur wiedergabe optischer informationen.
EP84305096A EP0133027B1 (en) 1983-07-29 1984-07-26 Optical information reproducing apparatus
CA000459882A CA1223348A (en) 1983-07-29 1984-07-27 Optical information reproducing apparatus
US07/045,239 US4780865A (en) 1983-07-29 1987-05-04 Optical information reproducing apparatus with tilt correction including projection and detection of a same diffusely illuminated field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58140139A JPS6032142A (ja) 1983-07-30 1983-07-30 光学式ディスク再生装置

Publications (2)

Publication Number Publication Date
JPS6032142A JPS6032142A (ja) 1985-02-19
JPH0422287B2 true JPH0422287B2 (en]) 1992-04-16

Family

ID=15261781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58140139A Granted JPS6032142A (ja) 1983-07-29 1983-07-30 光学式ディスク再生装置

Country Status (1)

Country Link
JP (1) JPS6032142A (en])

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61211846A (ja) * 1985-03-18 1986-09-19 Pioneer Electronic Corp 光学式情報記録再生装置におけるピツクアツプ装置
JPS6344223U (en]) * 1986-09-05 1988-03-24
JPH04118556U (ja) * 1991-04-09 1992-10-23 横河電機株式会社 探針走査型顕微鏡
JPH07272300A (ja) * 1994-03-31 1995-10-20 Sony Corp ディスクのスキュー検出装置

Also Published As

Publication number Publication date
JPS6032142A (ja) 1985-02-19

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