JPS51140702A - Semiconductor laser pickup apparatus - Google Patents

Semiconductor laser pickup apparatus

Info

Publication number
JPS51140702A
JPS51140702A JP50064232A JP6423275A JPS51140702A JP S51140702 A JPS51140702 A JP S51140702A JP 50064232 A JP50064232 A JP 50064232A JP 6423275 A JP6423275 A JP 6423275A JP S51140702 A JPS51140702 A JP S51140702A
Authority
JP
Japan
Prior art keywords
semiconductor laser
pickup apparatus
laser pickup
vibrating
time series
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
JP50064232A
Other languages
Japanese (ja)
Other versions
JPS597133B2 (en
Inventor
Yoshisada Oshida
Yasutsugu Takeda
Yoshito Tsunoda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP50064232A priority Critical patent/JPS597133B2/en
Publication of JPS51140702A publication Critical patent/JPS51140702A/en
Publication of JPS597133B2 publication Critical patent/JPS597133B2/en
Expired 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

  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To permit time series light reading out by vibrating the semiconductor laser combined with the beam condenser.
JP50064232A 1975-05-30 1975-05-30 Semiconductor laser pickup equipment Expired JPS597133B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50064232A JPS597133B2 (en) 1975-05-30 1975-05-30 Semiconductor laser pickup equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50064232A JPS597133B2 (en) 1975-05-30 1975-05-30 Semiconductor laser pickup equipment

Publications (2)

Publication Number Publication Date
JPS51140702A true JPS51140702A (en) 1976-12-03
JPS597133B2 JPS597133B2 (en) 1984-02-16

Family

ID=13252158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50064232A Expired JPS597133B2 (en) 1975-05-30 1975-05-30 Semiconductor laser pickup equipment

Country Status (1)

Country Link
JP (1) JPS597133B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52138903A (en) * 1976-05-12 1977-11-19 Philips Nv Optical scanner
JPS55112752U (en) * 1979-01-25 1980-08-08
JP2009008155A (en) * 2007-06-27 2009-01-15 Nsk Ltd Rolling bearing fixing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52138903A (en) * 1976-05-12 1977-11-19 Philips Nv Optical scanner
JPS55112752U (en) * 1979-01-25 1980-08-08
JP2009008155A (en) * 2007-06-27 2009-01-15 Nsk Ltd Rolling bearing fixing device

Also Published As

Publication number Publication date
JPS597133B2 (en) 1984-02-16

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