BE876144A - Dispositif pour l'exploration point par point d'une face d'information - Google Patents

Dispositif pour l'exploration point par point d'une face d'information

Info

Publication number
BE876144A
BE876144A BE0/195074A BE195074A BE876144A BE 876144 A BE876144 A BE 876144A BE 0/195074 A BE0/195074 A BE 0/195074A BE 195074 A BE195074 A BE 195074A BE 876144 A BE876144 A BE 876144A
Authority
BE
Belgium
Prior art keywords
point
exploration
information face
face
information
Prior art date
Application number
BE0/195074A
Other languages
English (en)
French (fr)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of BE876144A publication Critical patent/BE876144A/xx

Links

Classifications

    • 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
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/4233—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive element [DOE] contributing to a non-imaging application
    • G02B27/4238—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive element [DOE] contributing to a non-imaging application in optical recording or readout devices
    • 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
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microscoopes, Condenser (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Numerical Control (AREA)
BE0/195074A 1978-05-11 1979-05-09 Dispositif pour l'exploration point par point d'une face d'information BE876144A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7805069A NL7805069A (nl) 1978-05-11 1978-05-11 Inrichting voor puntsgewijze aftasting van een infor- matievlak.

Publications (1)

Publication Number Publication Date
BE876144A true BE876144A (fr) 1979-11-09

Family

ID=19830816

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/195074A BE876144A (fr) 1978-05-11 1979-05-09 Dispositif pour l'exploration point par point d'une face d'information

Country Status (22)

Country Link
US (1) US4242579A (es)
JP (1) JPS54155008A (es)
AR (1) AR219161A1 (es)
AT (1) AT372799B (es)
AU (1) AU528609B2 (es)
BE (1) BE876144A (es)
BR (1) BR7902788A (es)
CA (1) CA1145040A (es)
DD (1) DD143832A5 (es)
DE (1) DE2917932C2 (es)
DK (1) DK150046C (es)
ES (1) ES480406A1 (es)
FR (1) FR2425694B1 (es)
GB (1) GB2021281B (es)
IT (1) IT1112554B (es)
NL (1) NL7805069A (es)
NO (1) NO791541L (es)
NZ (1) NZ190392A (es)
PL (1) PL131561B1 (es)
SE (1) SE443466B (es)
YU (1) YU110079A (es)
ZA (1) ZA792065B (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5856236A (ja) * 1981-09-28 1983-04-02 Hitachi Ltd 光学的トラック位置検出装置およびそれを用いた光学的記録再生装置
US4534021A (en) * 1981-12-10 1985-08-06 Discovision Associates Angularly multiplexed optical recording medium
JPS59119548A (ja) * 1982-12-25 1984-07-10 Pioneer Electronic Corp 光学式ピツクアツプ装置
JPS63225927A (ja) * 1987-03-13 1988-09-20 Pioneer Electronic Corp 焦点誤差検出装置
NL8801327A (nl) * 1988-05-24 1989-12-18 Philips Nv Methode voor het optisch aftasten van een informatievlak en optische registratiedragers en aftastinrichtingen geschikt voor toepassing van de methode.
JP2002518781A (ja) * 1998-06-15 2002-06-25 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 光記録担体の走査装置
EP0965981A3 (en) * 1998-06-16 2009-11-25 Koninklijke Philips Electronics N.V. Device for scanning an optical record carrier
CN1764961A (zh) * 2003-03-28 2006-04-26 皇家飞利浦电子股份有限公司 光学记录载体和光学扫描设备
ATE366423T1 (de) * 2003-07-04 2007-07-15 Koninkl Philips Electronics Nv Optisches beugungselement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770340A (en) * 1972-08-21 1973-11-06 Technical Operations Inc Coherent optical system with expanded bandwidth and noise suppression
US3919562A (en) * 1974-05-20 1975-11-11 Zenith Radio Corp Slit detector for optical detector system
NL177157C (nl) * 1975-02-28 1985-08-01 Philips Nv Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestruktuur.
US4065786A (en) * 1975-09-30 1977-12-27 Rca Corporation Videodisc playback system
NL7600843A (nl) * 1976-01-28 1977-08-01 Philips Nv Inrichting voor het uitlezen van een registratie- drager waarop informatie, bijvoorbeeld en/of ge- luidsinformatie, is aangebracht.
CA1091966A (en) * 1976-10-15 1980-12-23 Chiaki Kojima Apparatus for reading signals recorded on a record carrier

Also Published As

Publication number Publication date
DK150046B (da) 1986-11-24
NZ190392A (en) 1982-06-29
YU110079A (en) 1982-06-30
DD143832A5 (de) 1980-09-10
DE2917932A1 (de) 1979-11-15
FR2425694A1 (fr) 1979-12-07
JPS6343820B2 (es) 1988-09-01
AT372799B (de) 1983-11-10
ZA792065B (en) 1980-12-31
US4242579A (en) 1980-12-30
AU4681079A (en) 1979-11-15
GB2021281B (en) 1982-06-23
CA1145040A (en) 1983-04-19
AR219161A1 (es) 1980-07-31
DK189679A (da) 1979-11-12
NO791541L (no) 1979-11-13
PL215491A1 (es) 1980-03-24
PL131561B1 (en) 1984-11-30
JPS54155008A (en) 1979-12-06
IT1112554B (it) 1986-01-20
SE7903979L (sv) 1979-11-12
SE443466B (sv) 1986-02-24
NL7805069A (nl) 1979-11-13
ATA352079A (de) 1983-03-15
FR2425694B1 (fr) 1988-07-08
ES480406A1 (es) 1979-12-16
AU528609B2 (en) 1983-05-05
GB2021281A (en) 1979-11-28
DE2917932C2 (de) 1983-01-20
DK150046C (da) 1987-07-13
BR7902788A (pt) 1979-11-27
IT7922460A0 (it) 1979-05-08

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