JPS5771538A - Optical pickup device - Google Patents

Optical pickup device

Info

Publication number
JPS5771538A
JPS5771538A JP55147307A JP14730780A JPS5771538A JP S5771538 A JPS5771538 A JP S5771538A JP 55147307 A JP55147307 A JP 55147307A JP 14730780 A JP14730780 A JP 14730780A JP S5771538 A JPS5771538 A JP S5771538A
Authority
JP
Japan
Prior art keywords
beam splitter
polarizing beam
passes
reflected
splitter
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
JP55147307A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6115497B2 (enrdf_load_stackoverflow
Inventor
Yoshio Miyake
Riichi Saeki
Toshio Takei
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55147307A priority Critical patent/JPS5771538A/ja
Publication of JPS5771538A publication Critical patent/JPS5771538A/ja
Publication of JPS6115497B2 publication Critical patent/JPS6115497B2/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

Landscapes

  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
JP55147307A 1980-10-21 1980-10-21 Optical pickup device Granted JPS5771538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55147307A JPS5771538A (en) 1980-10-21 1980-10-21 Optical pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55147307A JPS5771538A (en) 1980-10-21 1980-10-21 Optical pickup device

Publications (2)

Publication Number Publication Date
JPS5771538A true JPS5771538A (en) 1982-05-04
JPS6115497B2 JPS6115497B2 (enrdf_load_stackoverflow) 1986-04-24

Family

ID=15427229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55147307A Granted JPS5771538A (en) 1980-10-21 1980-10-21 Optical pickup device

Country Status (1)

Country Link
JP (1) JPS5771538A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5124868A (en) * 1989-01-25 1992-06-23 Olympus Optical Co., Ltd. Magneto-optic player with improved c/n ratio
JP2008194645A (ja) * 2007-02-15 2008-08-28 Komatsu Ltd 木材破砕用ビット

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5124868A (en) * 1989-01-25 1992-06-23 Olympus Optical Co., Ltd. Magneto-optic player with improved c/n ratio
JP2008194645A (ja) * 2007-02-15 2008-08-28 Komatsu Ltd 木材破砕用ビット

Also Published As

Publication number Publication date
JPS6115497B2 (enrdf_load_stackoverflow) 1986-04-24

Similar Documents

Publication Publication Date Title
JPS573235A (en) Focus controlling method
JPS5768813A (en) Optical information reader
EP0283002A3 (en) Optical head
JPS5494007A (en) Pickup for disc recorder recorded optically with information
JPS5771537A (en) Optical pickup device
JPS6455745A (en) Optical pickup device
JPS5771538A (en) Optical pickup device
JPS6455746A (en) Optical pickup device
JPS5771536A (en) Optical pickup device
JPS6486337A (en) Hologram
JPS5750329A (en) Optical reproducing device
JPS56156937A (en) Optical pickup device
EP0722167A4 (en) OPTICAL SCANNER
JPS57111838A (en) Optical information reader
JPS57205833A (en) Optical reproducing device
JPS57200001A (en) Optical record information reader
JPS5724033A (en) Pickup device
JPS5788535A (en) Pickup device
JPS5793314A (en) Semiconductor laser optical device
JPS57172306A (en) Focus controller of optical recording system
CA2100897A1 (en) Polarization Detector
JPS5661043A (en) Detector for focus
JPS5717916A (en) Optical signal regenerating device
JPS5750335A (en) Optical information reproducer
JPS5661046A (en) Optical disc device