JPS59229753A - 光情報処理装置 - Google Patents

光情報処理装置

Info

Publication number
JPS59229753A
JPS59229753A JP59067649A JP6764984A JPS59229753A JP S59229753 A JPS59229753 A JP S59229753A JP 59067649 A JP59067649 A JP 59067649A JP 6764984 A JP6764984 A JP 6764984A JP S59229753 A JPS59229753 A JP S59229753A
Authority
JP
Japan
Prior art keywords
prisms
semiconductor laser
light
disk
laser element
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
JP59067649A
Other languages
English (en)
Japanese (ja)
Other versions
JPH056262B2 (enrdf_load_stackoverflow
Inventor
Toshio Sugiyama
俊夫 杉山
Seiji Yonezawa
米沢　成二
Masahiro Oshima
尾島　正啓
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 JP59067649A priority Critical patent/JPS59229753A/ja
Publication of JPS59229753A publication Critical patent/JPS59229753A/ja
Publication of JPH056262B2 publication Critical patent/JPH056262B2/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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Optical Head (AREA)
JP59067649A 1984-04-06 1984-04-06 光情報処理装置 Granted JPS59229753A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59067649A JPS59229753A (ja) 1984-04-06 1984-04-06 光情報処理装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59067649A JPS59229753A (ja) 1984-04-06 1984-04-06 光情報処理装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP59149442A Division JPS60106038A (ja) 1984-07-20 1984-07-20 光学装置

Publications (2)

Publication Number Publication Date
JPS59229753A true JPS59229753A (ja) 1984-12-24
JPH056262B2 JPH056262B2 (enrdf_load_stackoverflow) 1993-01-26

Family

ID=13351078

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59067649A Granted JPS59229753A (ja) 1984-04-06 1984-04-06 光情報処理装置

Country Status (1)

Country Link
JP (1) JPS59229753A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5477386A (en) * 1991-07-24 1995-12-19 Asahi Kogaku Kogyo Kabushiki Kaisha Optical system for optical disc apparatus including anamorphic prisms

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53100844A (en) * 1977-02-15 1978-09-02 Canon Inc Beam shaping optical system
JPS5455184A (en) * 1977-10-11 1979-05-02 Canon Inc Semiconductor laser light source unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53100844A (en) * 1977-02-15 1978-09-02 Canon Inc Beam shaping optical system
JPS5455184A (en) * 1977-10-11 1979-05-02 Canon Inc Semiconductor laser light source unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5477386A (en) * 1991-07-24 1995-12-19 Asahi Kogaku Kogyo Kabushiki Kaisha Optical system for optical disc apparatus including anamorphic prisms

Also Published As

Publication number Publication date
JPH056262B2 (enrdf_load_stackoverflow) 1993-01-26

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