JPS6153775B2 - - Google Patents

Info

Publication number
JPS6153775B2
JPS6153775B2 JP54074664A JP7466479A JPS6153775B2 JP S6153775 B2 JPS6153775 B2 JP S6153775B2 JP 54074664 A JP54074664 A JP 54074664A JP 7466479 A JP7466479 A JP 7466479A JP S6153775 B2 JPS6153775 B2 JP S6153775B2
Authority
JP
Japan
Prior art keywords
prism
light
semiconductor laser
laser element
light beam
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
Application number
JP54074664A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5641A (en
Inventor
Seiji Yonezawa
Toshio Sugyama
Masahiro Oshima
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 JP7466479A priority Critical patent/JPS5641A/ja
Priority to US06/152,297 priority patent/US4333173A/en
Priority to FR8013059A priority patent/FR2459513B1/fr
Priority to NL8003411A priority patent/NL8003411A/nl
Priority to CA000353936A priority patent/CA1136273A/fr
Priority to GB8019469A priority patent/GB2053553B/en
Priority to DE19803022299 priority patent/DE3022299A1/de
Publication of JPS5641A publication Critical patent/JPS5641A/ja
Publication of JPS6153775B2 publication Critical patent/JPS6153775B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/08—Anamorphotic objectives
    • G02B13/10—Anamorphotic objectives involving prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0052—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a laser diode
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0972—Prisms
    • 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
    • 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
    • G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
    • 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
    • G11B7/13—Optical detectors therefor
    • 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
    • G11B7/1359—Single prisms
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
JP7466479A 1979-06-15 1979-06-15 Processor for optical information Granted JPS5641A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP7466479A JPS5641A (en) 1979-06-15 1979-06-15 Processor for optical information
US06/152,297 US4333173A (en) 1979-06-15 1980-05-22 Optical information processor with prismatic correction of laser beam shape
FR8013059A FR2459513B1 (fr) 1979-06-15 1980-06-12 Unite optique de traitement d'informations
NL8003411A NL8003411A (nl) 1979-06-15 1980-06-12 Inrichting voor het verwerken van optische informatie.
CA000353936A CA1136273A (fr) 1979-06-15 1980-06-13 Processeur de donnees optique
GB8019469A GB2053553B (en) 1979-06-15 1980-06-13 Optical information processor
DE19803022299 DE3022299A1 (de) 1979-06-15 1980-06-13 Optische informationsverarbeitungseinrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7466479A JPS5641A (en) 1979-06-15 1979-06-15 Processor for optical information

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP60220062A Division JPS61216145A (ja) 1985-10-04 1985-10-04 光情報処理装置
JP60220061A Division JPS61216144A (ja) 1985-10-04 1985-10-04 光情報処理装置

Publications (2)

Publication Number Publication Date
JPS5641A JPS5641A (en) 1981-01-06
JPS6153775B2 true JPS6153775B2 (fr) 1986-11-19

Family

ID=13553719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7466479A Granted JPS5641A (en) 1979-06-15 1979-06-15 Processor for optical information

Country Status (1)

Country Link
JP (1) JPS5641A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01267585A (ja) * 1988-04-19 1989-10-25 Kazuhiro Hase 磁場分布表示具

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58218906A (ja) * 1982-06-15 1983-12-20 株式会社ダイキ アクセサリ製造装置
JPS59110048A (ja) * 1982-12-15 1984-06-25 Hitachi Ltd 半導体レ−ザ情報再生装置
JPS6289018A (ja) * 1985-10-15 1987-04-23 Konishiroku Photo Ind Co Ltd ビ−ム整形光学系
JPS62298034A (ja) * 1986-06-17 1987-12-25 Nec Corp 光ヘツド
JP3058386B2 (ja) * 1992-09-10 2000-07-04 株式会社東芝 光学ヘッド装置及びこれを用いた光ディスク装置
US5615200A (en) * 1992-09-10 1997-03-25 Kabushiki Kaisha Toshiba Light beam shaping device to change an anisotropic beam to an isotropic beam for reducing the size of an optical head

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50147341A (fr) * 1974-05-15 1975-11-26
JPS5153833A (ja) * 1974-11-06 1976-05-12 Nippon Selfoc Co Ltd Hikaribiimuhenkanbunkatsuki
JPS5184206A (fr) * 1974-12-09 1976-07-23 Teletype Corp
JPS5224542A (en) * 1975-08-20 1977-02-24 Canon Inc Optical system for shaping a beam
JPS5265406A (en) * 1975-11-27 1977-05-30 Hitachi Ltd Inforamtion reproduction device
JPS5348504A (en) * 1976-10-13 1978-05-02 Matsushita Electric Ind Co Ltd Optical recorder/reproducer
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 (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50147341A (fr) * 1974-05-15 1975-11-26
JPS5153833A (ja) * 1974-11-06 1976-05-12 Nippon Selfoc Co Ltd Hikaribiimuhenkanbunkatsuki
JPS5184206A (fr) * 1974-12-09 1976-07-23 Teletype Corp
JPS5224542A (en) * 1975-08-20 1977-02-24 Canon Inc Optical system for shaping a beam
JPS5265406A (en) * 1975-11-27 1977-05-30 Hitachi Ltd Inforamtion reproduction device
JPS5348504A (en) * 1976-10-13 1978-05-02 Matsushita Electric Ind Co Ltd Optical recorder/reproducer
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
JPH01267585A (ja) * 1988-04-19 1989-10-25 Kazuhiro Hase 磁場分布表示具

Also Published As

Publication number Publication date
JPS5641A (en) 1981-01-06

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