JPS61122938A - 光学式ピツクアツプ装置 - Google Patents

光学式ピツクアツプ装置

Info

Publication number
JPS61122938A
JPS61122938A JP24416684A JP24416684A JPS61122938A JP S61122938 A JPS61122938 A JP S61122938A JP 24416684 A JP24416684 A JP 24416684A JP 24416684 A JP24416684 A JP 24416684A JP S61122938 A JPS61122938 A JP S61122938A
Authority
JP
Japan
Prior art keywords
light
order diffracted
astigmatism
diffracting
disk
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.)
Granted
Application number
JP24416684A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0510733B2 (enrdf_load_stackoverflow
Inventor
Akihiro Tachibana
昭弘 橘
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP24416684A priority Critical patent/JPS61122938A/ja
Publication of JPS61122938A publication Critical patent/JPS61122938A/ja
Publication of JPH0510733B2 publication Critical patent/JPH0510733B2/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)
JP24416684A 1984-11-19 1984-11-19 光学式ピツクアツプ装置 Granted JPS61122938A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24416684A JPS61122938A (ja) 1984-11-19 1984-11-19 光学式ピツクアツプ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24416684A JPS61122938A (ja) 1984-11-19 1984-11-19 光学式ピツクアツプ装置

Publications (2)

Publication Number Publication Date
JPS61122938A true JPS61122938A (ja) 1986-06-10
JPH0510733B2 JPH0510733B2 (enrdf_load_stackoverflow) 1993-02-10

Family

ID=17114749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24416684A Granted JPS61122938A (ja) 1984-11-19 1984-11-19 光学式ピツクアツプ装置

Country Status (1)

Country Link
JP (1) JPS61122938A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5127702A (en) * 1988-12-13 1992-07-07 Toyoda Gosei Co., Ltd. Seal structure for motor vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5127702A (en) * 1988-12-13 1992-07-07 Toyoda Gosei Co., Ltd. Seal structure for motor vehicle

Also Published As

Publication number Publication date
JPH0510733B2 (enrdf_load_stackoverflow) 1993-02-10

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