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ES480406A1 - Un aparato para explorar por puntos una superficie de infor-macion. - Google Patents

Un aparato para explorar por puntos una superficie de infor-macion.

Info

Publication number
ES480406A1
ES480406A1 ES480406A ES480406A ES480406A1 ES 480406 A1 ES480406 A1 ES 480406A1 ES 480406 A ES480406 A ES 480406A ES 480406 A ES480406 A ES 480406A ES 480406 A1 ES480406 A1 ES 480406A1
Authority
ES
Spain
Prior art keywords
information surface
scanning
pointwise
pointwise scanning
resolution
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
ES480406A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES480406A1 publication Critical patent/ES480406A1/es
Expired legal-status Critical Current

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)

Abstract

Un aparato para explorar por puntos una superficie de información, en particular un aparato para leer un soporte de registro con una estructura de información ópticamente legible, cuyo aparato comprende una fuente de radiación, un sistema de objetivo de iluminación para enfocar el haz de exploración emitido por la fuente de radiación en un punto o traza de exploración sobre la superficie de información , y un sistema de objetivo de observación para concentrar la radiación procedente de la superficie de información sobre el plano de un sistema de detección sensible a la radiación, caracterizado porque el sistema de objetivo de observación está dispuesto asimétricamente con relación al subhaz de orden cero de la radiación que procede de la superficie está constituido por un detector cuya dimensión en la dirección de exploración es pequeña.
ES480406A 1978-05-11 1979-05-09 Un aparato para explorar por puntos una superficie de infor-macion. Expired ES480406A1 (es)

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
ES480406A1 true ES480406A1 (es) 1979-12-16

Family

ID=19830816

Family Applications (1)

Application Number Title Priority Date Filing Date
ES480406A Expired ES480406A1 (es) 1978-05-11 1979-05-09 Un aparato para explorar por puntos una superficie de infor-macion.

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.
WO1999066504A2 (en) * 1998-06-15 1999-12-23 Koninklijke Philips Electronics N.V. Device for scanning an optical record carrier
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
TW200508662A (en) * 2003-07-04 2005-03-01 Koninkl Philips Electronics Nv Optical diffraction element

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
NL7805069A (nl) 1979-11-13
PL215491A1 (es) 1980-03-24
AR219161A1 (es) 1980-07-31
DE2917932C2 (de) 1983-01-20
JPS54155008A (en) 1979-12-06
DD143832A5 (de) 1980-09-10
FR2425694B1 (fr) 1988-07-08
AT372799B (de) 1983-11-10
GB2021281A (en) 1979-11-28
PL131561B1 (en) 1984-11-30
DK150046B (da) 1986-11-24
CA1145040A (en) 1983-04-19
ATA352079A (de) 1983-03-15
AU4681079A (en) 1979-11-15
IT7922460A0 (it) 1979-05-08
AU528609B2 (en) 1983-05-05
NZ190392A (en) 1982-06-29
BE876144A (fr) 1979-11-09
IT1112554B (it) 1986-01-20
BR7902788A (pt) 1979-11-27
SE7903979L (sv) 1979-11-12
DE2917932A1 (de) 1979-11-15
DK189679A (da) 1979-11-12
NO791541L (no) 1979-11-13
YU110079A (en) 1982-06-30
DK150046C (da) 1987-07-13
JPS6343820B2 (es) 1988-09-01
FR2425694A1 (fr) 1979-12-07
ZA792065B (en) 1980-12-31
US4242579A (en) 1980-12-30
SE443466B (sv) 1986-02-24
GB2021281B (en) 1982-06-23

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