AT376510B - Optische kopfvorrichtung, insbesondere fuer einen optischen plattenspieler - Google Patents

Optische kopfvorrichtung, insbesondere fuer einen optischen plattenspieler

Info

Publication number
AT376510B
AT376510B AT0403082A AT403082A AT376510B AT 376510 B AT376510 B AT 376510B AT 0403082 A AT0403082 A AT 0403082A AT 403082 A AT403082 A AT 403082A AT 376510 B AT376510 B AT 376510B
Authority
AT
Austria
Prior art keywords
optical
head device
turntable
optical head
optical turntable
Prior art date
Application number
AT0403082A
Other languages
English (en)
Other versions
ATA403082A (de
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of ATA403082A publication Critical patent/ATA403082A/de
Application granted granted Critical
Publication of AT376510B publication Critical patent/AT376510B/de

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
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G02B27/10—Beam splitting or combining systems
    • G02B27/16—Beam splitting or combining systems used as aids for focusing
    • 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
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0937—Piezoelectric actuators

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Head (AREA)
AT0403082A 1981-11-04 1982-11-04 Optische kopfvorrichtung, insbesondere fuer einen optischen plattenspieler AT376510B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56176749A JPS5880139A (ja) 1981-11-04 1981-11-04 光学ヘツド

Publications (2)

Publication Number Publication Date
ATA403082A ATA403082A (de) 1984-04-15
AT376510B true AT376510B (de) 1984-11-26

Family

ID=16019131

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0403082A AT376510B (de) 1981-11-04 1982-11-04 Optische kopfvorrichtung, insbesondere fuer einen optischen plattenspieler

Country Status (9)

Country Link
JP (1) JPS5880139A (de)
KR (1) KR880002635B1 (de)
AT (1) AT376510B (de)
AU (1) AU556305B2 (de)
CA (1) CA1177165A (de)
DE (1) DE3240734C2 (de)
FR (1) FR2519458B1 (de)
GB (1) GB2109583B (de)
NL (1) NL8204248A (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8304212A (nl) * 1983-12-07 1984-10-01 Philips Nv Enkelvoudige collimatorlens met een asferisch oppervlak.
CA1258906A (en) * 1985-04-22 1989-08-29 Hiroshi Oinoue Semiconductor laser apparatus for optical head
JPS61269235A (ja) * 1985-05-24 1986-11-28 Omron Tateisi Electronics Co 光情報処理装置
JPS61269233A (ja) * 1985-05-24 1986-11-28 Omron Tateisi Electronics Co 光情報処理装置
JPH0687099B2 (ja) * 1986-10-08 1994-11-02 富士通株式会社 レ−ザ光走査装置
CA2079620A1 (en) * 1991-10-25 1993-04-26 Roeland M. T. Hekker Holographic elements for an optical recording system
US5272690A (en) * 1992-03-05 1993-12-21 International Business Machines Corporation Hologram element system
WO1996030903A2 (en) * 1995-03-29 1996-10-03 Philips Electronics N.V. Optical unit comprising a radiation source, a detector and a grating, and scanning device including the optical unit
GB0408383D0 (en) 2004-04-15 2004-05-19 Koninkl Philips Electronics Nv A radio network and a method of operating a radio network

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245882A (en) * 1977-11-04 1981-01-20 Environmental Research Institute Of Michigan Doubly modulated on-axis thick hologram optical element
CH621426A5 (de) * 1976-05-12 1981-01-30 Philips Nv

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003059A (en) * 1974-02-07 1977-01-11 Canon Kabushiki Kaisha Optical recorder having focus controlling means
NL7608561A (nl) * 1976-08-02 1978-02-06 Philips Nv Optische uitleeseenheid voor het aftasten van een registratiedrager voorzien van een stra- lingsreflekterende informatiestruktuur.
CA1091966A (en) * 1976-10-15 1980-12-23 Chiaki Kojima Apparatus for reading signals recorded on a record carrier
NL7713711A (nl) * 1977-12-12 1979-06-14 Philips Nv Optisch uitleeseenheid voor het uitlezen van een bewegende informatiedrager, in het bijzonder voor het uitlezen van een videoplaat.
JPS54109801A (en) * 1978-02-17 1979-08-28 Toshiba Corp Optical reader
JPS5573934A (en) * 1978-11-20 1980-06-04 Mansei Kogyo Kk Reader for optical information
JPS55163566A (en) * 1979-06-05 1980-12-19 Sony Corp Hologram lens and its production and optical system signal using this hologram lens
JPS5647933A (en) * 1979-09-25 1981-04-30 Sony Corp Optical signal head
JPS5680836A (en) * 1979-12-07 1981-07-02 Seiko Instr & Electronics Ltd Optical information reader

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH621426A5 (de) * 1976-05-12 1981-01-30 Philips Nv
US4245882A (en) * 1977-11-04 1981-01-20 Environmental Research Institute Of Michigan Doubly modulated on-axis thick hologram optical element

Also Published As

Publication number Publication date
JPS5880139A (ja) 1983-05-14
NL8204248A (nl) 1983-06-01
GB2109583B (en) 1985-07-17
AU9007182A (en) 1983-05-12
DE3240734A1 (de) 1983-05-19
GB2109583A (en) 1983-06-02
DE3240734C2 (de) 1995-11-30
FR2519458A1 (fr) 1983-07-08
KR880002635B1 (en) 1988-12-07
CA1177165A (en) 1984-10-30
KR840002561A (ko) 1984-07-02
FR2519458B1 (fr) 1991-07-19
ATA403082A (de) 1984-04-15
AU556305B2 (en) 1986-10-30

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Legal Events

Date Code Title Description
ELA Expired due to lapse of time
ELJ Ceased due to non-payment of the annual fee