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NL7904724A - Optische aftastinrichting met fokusseerstelsel. - Google Patents

Optische aftastinrichting met fokusseerstelsel. Download PDF

Info

Publication number
NL7904724A
NL7904724A NL7904724A NL7904724A NL7904724A NL 7904724 A NL7904724 A NL 7904724A NL 7904724 A NL7904724 A NL 7904724A NL 7904724 A NL7904724 A NL 7904724A NL 7904724 A NL7904724 A NL 7904724A
Authority
NL
Netherlands
Prior art keywords
signal
focus
detector
focusing
record carrier
Prior art date
Application number
NL7904724A
Other languages
English (en)
Dutch (nl)
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
Priority to NL7904724A priority Critical patent/NL7904724A/nl
Priority to US06/085,459 priority patent/US4357696A/en
Priority to AR281047A priority patent/AR222079A1/es
Priority to CA000353809A priority patent/CA1145038A/en
Priority to MX182770A priority patent/MX147804A/es
Priority to EP80200550A priority patent/EP0021510B1/en
Priority to AT80200550T priority patent/ATE22629T1/de
Priority to DK254880A priority patent/DK150764C/da
Priority to DE8080200550T priority patent/DE3071786D1/de
Priority to NZ194050A priority patent/NZ194050A/xx
Priority to ES492463A priority patent/ES8102395A1/es
Priority to BR8003727A priority patent/BR8003727A/pt
Priority to AU59332/80A priority patent/AU537317B2/en
Priority to JP8156580A priority patent/JPS567249A/ja
Publication of NL7904724A publication Critical patent/NL7904724A/nl

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
    • G11B7/08—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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
NL7904724A 1979-06-18 1979-06-18 Optische aftastinrichting met fokusseerstelsel. NL7904724A (nl)

Priority Applications (14)

Application Number Priority Date Filing Date Title
NL7904724A NL7904724A (nl) 1979-06-18 1979-06-18 Optische aftastinrichting met fokusseerstelsel.
US06/085,459 US4357696A (en) 1979-06-18 1979-10-17 Optical scanning apparatus with focussing system
AR281047A AR222079A1 (es) 1979-06-18 1980-05-14 Aparato de exploracion optica con conjunto de enfoque
CA000353809A CA1145038A (en) 1979-06-18 1980-06-11 Optical scanning apparatus with focussing system
MX182770A MX147804A (es) 1979-06-18 1980-06-13 Mejoras en aparato para explorar opticamente una portadora de grabacion
EP80200550A EP0021510B1 (en) 1979-06-18 1980-06-13 Optical scanning apparatus with focussing system
AT80200550T ATE22629T1 (de) 1979-06-18 1980-06-13 Optischer abtast-apparat mit fokussierungssystem.
DK254880A DK150764C (da) 1979-06-18 1980-06-13 Optisk skanderingsapparat med fokuseringssystem
DE8080200550T DE3071786D1 (en) 1979-06-18 1980-06-13 Optical scanning apparatus with focussing system
NZ194050A NZ194050A (en) 1979-06-18 1980-06-16 Optically read record focus control
ES492463A ES8102395A1 (es) 1979-06-18 1980-06-16 Un aparato para explorar opticamente un soporte de registro
BR8003727A BR8003727A (pt) 1979-06-18 1980-06-16 Equipamento para se esquadrinhar oticamente um portador de registros
AU59332/80A AU537317B2 (en) 1979-06-18 1980-06-17 Optically reading a record cainer
JP8156580A JPS567249A (en) 1979-06-18 1980-06-18 Optical scan device for record carrier

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7904724A NL7904724A (nl) 1979-06-18 1979-06-18 Optische aftastinrichting met fokusseerstelsel.
NL7904724 1979-06-18

Publications (1)

Publication Number Publication Date
NL7904724A true NL7904724A (nl) 1980-12-22

Family

ID=19833368

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7904724A NL7904724A (nl) 1979-06-18 1979-06-18 Optische aftastinrichting met fokusseerstelsel.

Country Status (14)

Country Link
US (1) US4357696A (da)
EP (1) EP0021510B1 (da)
JP (1) JPS567249A (da)
AR (1) AR222079A1 (da)
AT (1) ATE22629T1 (da)
AU (1) AU537317B2 (da)
BR (1) BR8003727A (da)
CA (1) CA1145038A (da)
DE (1) DE3071786D1 (da)
DK (1) DK150764C (da)
ES (1) ES8102395A1 (da)
MX (1) MX147804A (da)
NL (1) NL7904724A (da)
NZ (1) NZ194050A (da)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57181433A (en) * 1981-04-22 1982-11-08 Olympus Optical Co Ltd Tracking system for optical disc reproducer
JPS57208642A (en) * 1981-06-18 1982-12-21 Toshiba Corp Focus controller
US4418405A (en) * 1981-06-29 1983-11-29 Rca Corporation Lens positioning controller for optical playback apparatus
JPS5877035A (ja) * 1981-10-08 1983-05-10 Mitsubishi Electric Corp 自動焦点引込み装置
JPS5885940A (ja) * 1981-11-17 1983-05-23 Hitachi Ltd 光デイスクの自動焦点引込み方法
NL8105347A (nl) * 1981-11-26 1983-06-16 Philips Nv Inrichting voor het optisch aftasten van een schijfvormige registratiedrager.
JPS58150145A (ja) * 1982-03-03 1983-09-06 Toshiba Corp 光学式デジタルデイスクプレ−ヤのトラツキング制御回路
NL8300291A (nl) * 1983-01-27 1984-08-16 Philips Nv Inrichting voor het uitlezen van een optische registratiedrager.
JP2548106B2 (ja) * 1984-05-23 1996-10-30 ソニー株式会社 光学式デイスクプレ−ヤのトラツキング・サ−ボコントロ−ル装置
US4899327A (en) * 1985-02-04 1990-02-06 International Business Machines Corporation Focus servo loop correction
US4823330A (en) * 1985-02-04 1989-04-18 International Business Machines Corporation Focus servo loop off-set compensation
US4755036A (en) * 1985-02-07 1988-07-05 Brother Kogyo Kabushiki Kaisha Apparatus for deflecting light beam
JPS61188748A (ja) * 1985-02-16 1986-08-22 Brother Ind Ltd 光学ヘツド
JPH06101127B2 (ja) * 1985-03-13 1994-12-12 シャープ株式会社 光学ヘツド
JPH0736233B2 (ja) * 1985-04-16 1995-04-19 オリンパス光学工業株式会社 光学的情報記録再生装置
JP2629170B2 (ja) * 1985-06-08 1997-07-09 ブラザー工業株式会社 レーザプリンタ
JPS6232425A (ja) * 1985-08-05 1987-02-12 Brother Ind Ltd 光偏向器
JPS62237433A (ja) * 1986-04-09 1987-10-17 Brother Ind Ltd 光偏向器
JPS6370203A (ja) * 1986-09-11 1988-03-30 Brother Ind Ltd 屈折率分布型光導波路レンズの製造方法
JP2706237B2 (ja) * 1986-09-20 1998-01-28 ブラザー工業株式会社 レーザプリンタ
JPH0777048B2 (ja) * 1987-06-26 1995-08-16 三菱電機株式会社 記録媒体駆動装置
US4998233A (en) * 1988-02-12 1991-03-05 International Business Machines Corporation Acquiring focus in optical systems using a focus error signal and a laser drive signal
FR2632438A1 (fr) * 1988-06-07 1989-12-08 Philips Nv Enregistreur magneto-optique a champ magnetique module
JP2642672B2 (ja) * 1988-06-29 1997-08-20 富士通株式会社 光ディスク装置
JPH04307429A (ja) * 1991-04-04 1992-10-29 Matsushita Electric Ind Co Ltd フォーカス制御装置
JP3769666B2 (ja) * 2000-11-09 2006-04-26 日本電気株式会社 収差補正方法および光ディスク装置
US8638437B2 (en) 2008-02-14 2014-01-28 J.A. Woollam Co., Inc. System and method of aligning a sample
US8064055B2 (en) * 2008-02-14 2011-11-22 J.A. Woollam Co., Inc. System and method of aligning a sample
US8983787B1 (en) 2008-12-12 2015-03-17 Martin M. Liphardt Method of evaluating data quality

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500162A (en) * 1968-03-27 1970-03-10 Sangamo Electric Co System for providing dc values representative of phase difference
NL172202C (nl) * 1971-03-11 1983-07-18 Philips Nv Inrichting voor het uitlezen van een plaatvormige informatiedrager bevattende in optische vorm gecodeerde beeld- en/of geluidssignalen.
AR205243A1 (es) * 1972-05-11 1976-04-21 Philips Nv Aparato para la lectura de un portador de grabacion reflector plano
NL160138C (nl) * 1972-05-11 1979-09-17 Philips Nv Inrichting voor het uitlezen van een vlakke registratie- drager.
NL7211998A (da) * 1972-09-02 1974-03-05
FR2222666B1 (da) * 1973-03-19 1976-11-05 Thomson Brandt
NL7313454A (nl) * 1973-10-01 1975-04-03 Philips Nv Opto-elektronisch stelsel voor het bepalen van een king tussen de werkelijke positie van een stralings kterend vlak in een optisch afbeeldingsstelsel en d ste positie van dit vlak.
NL7402504A (nl) * 1974-02-25 1975-08-27 Philips Nv Inrichting voor het langs optische weg uitlezen van een registratiedrager.
DE2453364C3 (de) * 1973-11-09 1979-02-22 Hitachi, Ltd., Tokio Automatische Fokussiervorrichtung
FR2251876B1 (da) * 1973-11-16 1977-09-23 Thomson Brandt
JPS5137248A (en) * 1974-09-26 1976-03-29 Victor Company Of Japan Kogakubiimu no shotenchoseihoshiki
AR205839A1 (es) * 1974-09-30 1976-06-07 Mca Disco Vision Servodisposicion para recorrer opticamente y leer simultaneamente un canal de informacion almacenado en un disco de video
US4057833A (en) * 1974-10-03 1977-11-08 U.S. Philips Corporation Centering detection system for an apparatus for playing optically readable record carriers
NL7414776A (nl) * 1974-11-13 1976-05-17 Philips Nv Inrichting voor het uitlezen van een registra- tiedrager met een optische informatiestruktuur.
NL177157C (nl) * 1975-02-28 1985-08-01 Philips Nv Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestruktuur.
NL182990C (nl) * 1975-07-07 1988-06-16 Philips Nv Inrichting voor het uitlezen van een stralingsreflekterende registratiedrager.
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.
NL7708200A (nl) * 1976-07-28 1978-01-31 Hitachi Ltd Automatische scherpstellingsinrichting.
NL7608561A (nl) * 1976-08-02 1978-02-06 Philips Nv Optische uitleeseenheid voor het aftasten van een registratiedrager voorzien van een stra- lingsreflekterende informatiestruktuur.
NL7703123A (nl) * 1977-03-23 1978-09-26 Philips Nv Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager.

Also Published As

Publication number Publication date
ES492463A0 (es) 1980-12-16
ES8102395A1 (es) 1980-12-16
DK150764C (da) 1988-01-18
BR8003727A (pt) 1981-01-13
DE3071786D1 (en) 1986-11-06
EP0021510A1 (en) 1981-01-07
JPS567249A (en) 1981-01-24
ATE22629T1 (de) 1986-10-15
AU5933280A (en) 1981-01-08
DK254880A (da) 1980-12-19
US4357696A (en) 1982-11-02
AR222079A1 (es) 1981-04-15
AU537317B2 (en) 1984-06-14
CA1145038A (en) 1983-04-19
NZ194050A (en) 1983-07-29
DK150764B (da) 1987-06-15
EP0021510B1 (en) 1986-10-01
MX147804A (es) 1983-01-12

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