ES8105876A1 - Un sistema optico de deteccion de error de enfoque - Google Patents

Un sistema optico de deteccion de error de enfoque

Info

Publication number
ES8105876A1
ES8105876A1 ES495326A ES495326A ES8105876A1 ES 8105876 A1 ES8105876 A1 ES 8105876A1 ES 495326 A ES495326 A ES 495326A ES 495326 A ES495326 A ES 495326A ES 8105876 A1 ES8105876 A1 ES 8105876A1
Authority
ES
Spain
Prior art keywords
error detection
detection system
radiation
reflecting surface
focussing
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
ES495326A
Other languages
English (en)
Other versions
ES495326A0 (es
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 ES495326A0 publication Critical patent/ES495326A0/es
Publication of ES8105876A1 publication Critical patent/ES8105876A1/es
Expired legal-status Critical Current

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
    • G11B7/0908—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
    • G11B7/0909—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 by astigmatic methods

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

ELEMENTO OPTICO, DEFLECTOR DEL HAZ DE RADIACION E INTRODUCTOR DE ASTIGMATISMO, QUE FORMA PARTE DE UN SISTEMA OPTIMO DE DETECCION DE ERROR DE ENFOQUE. CONSISTE EN UN PRISMA TRIANGULAR DE UN MATERIAL TRANSPARENTE, SITUADO ENTRE LA FUENTE DE RADIACION Y EL SISTEMA DE OBJETIVO E INCLINADO RESPECTO AL EJE PRINCIPAL DEL HAZ DE RADIACION. LA CARA MAS PROXIMA A LA FUENTE DE RADIACION ES PARCIALMENTE REFLECTORA Y PUEDE SER UN ESPEJO SEMITRANSPARENTE. LA OTRA CARA PUEDE ESTAR RECUBIERTA DE UNA CAPA REFLECTORA. EXISTEN VARIANTES DE FORMA Y REALIZACION.
ES495326A 1979-09-28 1980-09-25 Un sistema optico de deteccion de error de enfoque Expired ES8105876A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7907216A NL7907216A (nl) 1979-09-28 1979-09-28 Optisch fokusfout-detektiestelsel.

Publications (2)

Publication Number Publication Date
ES495326A0 ES495326A0 (es) 1981-06-01
ES8105876A1 true ES8105876A1 (es) 1981-06-01

Family

ID=19833932

Family Applications (1)

Application Number Title Priority Date Filing Date
ES495326A Expired ES8105876A1 (es) 1979-09-28 1980-09-25 Un sistema optico de deteccion de error de enfoque

Country Status (10)

Country Link
US (1) US4358200A (es)
JP (1) JPS5657013A (es)
AU (1) AU6270980A (es)
CA (1) CA1144792A (es)
DE (1) DE3035719A1 (es)
ES (1) ES8105876A1 (es)
FR (1) FR2466787B1 (es)
GB (1) GB2059057B (es)
IT (1) IT1132757B (es)
NL (1) NL7907216A (es)

Families Citing this family (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS573235A (en) * 1980-06-07 1982-01-08 Ricoh Co Ltd Focus controlling method
JPS5737742A (en) * 1980-08-19 1982-03-02 Olympus Optical Co Ltd Method and device for optical information recording
JPS5752006A (en) * 1980-08-19 1982-03-27 Olympus Optical Co Ltd Method and device for detecting focus
JPS5766533A (en) * 1980-10-09 1982-04-22 Olympus Optical Co Ltd Optical information reader
JPS5774837A (en) * 1980-10-25 1982-05-11 Olympus Optical Co Ltd Signal detection system of optical information reproducing device
FR2502800A1 (fr) * 1981-03-24 1982-10-01 Thomson Csf Senseur optique d'asservissement de focalisation
JPS5810713A (ja) * 1981-07-14 1983-01-21 Dainippon Screen Mfg Co Ltd 光ビ−ム分配器
US4532619A (en) * 1982-01-22 1985-07-30 Hitachi, Ltd. Method and apparatus for reducing semiconductor laser optical noise
FR2523350B1 (fr) * 1982-03-09 1987-05-22 Thomson Csf Tete optique dans un dispositif d'enregistrement-lecture d'un support d'information
NL8202058A (nl) * 1982-05-19 1983-12-16 Philips Nv Opto-elektronisch fokusfout-detektiestelsel.
GB2122835B (en) * 1982-06-30 1986-08-06 Eastman Kodak Co Rangefinder
US4499569A (en) * 1982-09-07 1985-02-12 Discovision Associates Writing beam focus monitor
JPS59119548A (ja) * 1982-12-25 1984-07-10 Pioneer Electronic Corp 光学式ピツクアツプ装置
JPS59162514A (ja) * 1983-03-08 1984-09-13 Dainippon Screen Mfg Co Ltd 画像走査記録装置における焦点調整方法
JPS59167863A (ja) * 1983-03-14 1984-09-21 Minolta Camera Co Ltd 光デイスク用光学系
JPS6117232A (ja) * 1984-07-04 1986-01-25 Canon Inc 光ヘツド装置
JPH0746439B2 (ja) * 1985-04-09 1995-05-17 キヤノン株式会社 光ヘツド装置
JPS61178740A (ja) * 1985-02-05 1986-08-11 Canon Inc 光ヘツド装置
US4733065A (en) * 1984-06-27 1988-03-22 Canon Kabushiki Kaisha Optical head device with diffraction grating for separating a light beam incident on an optical recording medium from a light beam reflected therefrom
JPS6139942A (ja) * 1984-08-01 1986-02-26 Matsushita Electric Ind Co Ltd 光ピツクアツプ
JPS6161240A (ja) * 1984-09-03 1986-03-29 Hitachi Ltd 光学式信号再生装置
JPH0619838B2 (ja) * 1984-12-26 1994-03-16 株式会社日立製作所 光学式再生装置
JPH067658B2 (ja) * 1985-02-15 1994-01-26 株式会社リコー カラ−画像読取装置
JPS61236035A (ja) * 1985-04-09 1986-10-21 Sony Corp 光学ヘツド
JPS61264521A (ja) * 1985-05-20 1986-11-22 Hitachi Ltd 光学式読取再生装置
JPH0831212B2 (ja) * 1985-06-17 1996-03-27 パイオニア株式会社 光学式ピックアップ装置
JPS61292231A (ja) * 1985-06-19 1986-12-23 Akai Electric Co Ltd 光ピツクアツプ装置
JPS629537A (ja) * 1985-07-08 1987-01-17 Pioneer Electronic Corp 光学式ピツクアツプ装置
US4778984A (en) * 1985-10-16 1988-10-18 Canon Denshi Kabushiki Kaisha Apparatus for detecting focus from astigmatism
JPS62208440A (ja) * 1986-03-07 1987-09-12 Mitsubishi Electric Corp 光ピツクアツプ
JP2634797B2 (ja) * 1986-01-24 1997-07-30 日本電気株式会社 光ヘッド装置
JPH0750532B2 (ja) * 1986-05-26 1995-05-31 日本電気株式会社 光ヘツド装置
JPH0630164B2 (ja) * 1985-12-16 1994-04-20 キヤノン株式会社 光ヘツド装置
FR2597249B1 (fr) * 1986-04-11 1988-06-17 Thomson Csf Dispositif de lecture optique de support d'enregistrement optique
EP0241942B1 (en) * 1986-04-18 1992-03-04 Mitsubishi Denki Kabushiki Kaisha Optical type head device
JPH0810854Y2 (ja) * 1986-05-12 1996-03-29 パイオニア株式会社 光磁気記録媒体再生装置
US5189651A (en) * 1986-05-12 1993-02-23 Pioneer Electronic Corporation Optical system in magneto-optical recording and reproducing device
JPH07114025B2 (ja) * 1986-06-13 1995-12-06 三菱電機株式会社 光学式情報再生装置
JP2618868B2 (ja) * 1986-10-31 1997-06-11 三菱電機株式会社 光学ヘツドユニット
KR900008380B1 (ko) * 1986-07-01 1990-11-17 미쓰비시덴기 가부시기 가이샤 광학식 헤드장치
JPH0810851Y2 (ja) * 1986-07-01 1996-03-29 三洋電機株式会社 光ピツクアツプ装置
NL8601876A (nl) * 1986-07-18 1988-02-16 Philips Nv Inrichting voor het aftasten van een optische registratiedrager.
NL8601974A (nl) * 1986-08-01 1988-03-01 Philips Nv Inrichting voor het met optische straling aftasten van een stralingsreflekterend informatievlak.
JPS6358630A (ja) * 1986-08-29 1988-03-14 Mitsubishi Electric Corp 光学式情報再生装置
EP0258890B1 (en) * 1986-09-02 1993-03-31 Fuji Photo Film Co., Ltd. Optical pickup apparatus
US4789977A (en) * 1986-11-06 1988-12-06 Laser Magnetic Storage International Company Optical data recording device
JPS63153732A (ja) * 1986-12-18 1988-06-27 Canon Electronics Inc 焦点検出装置
JPH0675307B2 (ja) * 1987-01-30 1994-09-21 富士写真フイルム株式会社 光磁気記録媒体用ピツクアツプ
JPH06101138B2 (ja) * 1987-03-19 1994-12-12 松下電器産業株式会社 光ヘツド装置
US4879706A (en) * 1987-07-29 1989-11-07 Laser Magnetic Storage International Company Method and apparatus for focus and tracking in an optical disk system
EP0305169B1 (en) * 1987-08-24 1994-05-11 Sharp Kabushiki Kaisha Optical pickup apparatus and optical grating assembly therefor
DE68909663T2 (de) * 1988-04-26 1994-04-07 Philips Nv Anordnung zum optischen Abtasten eines magneto-optischen Aufzeichnungsträgers.
US5066138A (en) * 1988-06-16 1991-11-19 Mitsubishi Denki Kabushiki Kaisha Optical head apparatus
NL8901245A (nl) * 1989-05-19 1990-12-17 Philips Nv Retrofokus objektieflens en optische aftastinrichting voorzien van een dergelijke lens.
CA2012401C (en) * 1989-05-26 1994-05-10 Anthony G. Dewey Focus-error detection using prism-enhanced spot size monitoring
JPH02311816A (ja) * 1989-05-27 1990-12-27 Sharp Corp ビーム変換装置
US5233444A (en) * 1989-07-25 1993-08-03 Olympus Optical Co., Ltd. Focus error detecting apparatus
US4998011A (en) * 1989-11-17 1991-03-05 Applied Magnetics Corporation Flat plate focus sensing apparatus
JP2684822B2 (ja) * 1990-06-06 1997-12-03 松下電器産業株式会社 光ピックアップヘッド装置
US5245174A (en) * 1990-10-15 1993-09-14 Applied Magnetics Corporation Focus sensing apparatus utilizing a reflecting surface having variable reflectivity
GB2248989B (en) * 1990-10-15 1995-05-24 Applied Magnetics Corp Focus sensing apparatus and method
JP2865223B2 (ja) * 1990-12-28 1999-03-08 松下電子工業株式会社 光ピックアップ用偏光板および光ピックアップ装置
US5751480A (en) * 1991-04-09 1998-05-12 Canon Kabushiki Kaisha Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit
JPH04318333A (ja) * 1991-04-17 1992-11-09 Matsushita Electric Ind Co Ltd 光ヘッド装置
US5568315A (en) * 1991-05-28 1996-10-22 Discovision Associates Optical beamsplitter
US5331622A (en) * 1991-05-28 1994-07-19 Applied Magnetics Corporation Compact optical head
JP3241781B2 (ja) * 1991-08-22 2001-12-25 松下電器産業株式会社 光ヘッド装置および光情報記録装置、光情報再生装置
JPH0554409A (ja) * 1991-08-27 1993-03-05 Nikon Corp 焦点検出光学系
JP3246608B2 (ja) * 1991-11-18 2002-01-15 パイオニア株式会社 光学式情報再生装置
JP2975466B2 (ja) * 1991-11-18 1999-11-10 パイオニア株式会社 光学式情報再生装置
JP3109877B2 (ja) * 1991-11-18 2000-11-20 パイオニア株式会社 光学式情報再生装置
JP2660140B2 (ja) * 1992-11-20 1997-10-08 キヤノン株式会社 光ヘッド装置
EP0605929B1 (en) * 1993-01-04 1998-07-29 Koninklijke Philips Electronics N.V. Device for optically scanning a surface
KR100326688B1 (ko) * 1993-01-04 2002-06-20 요트.게.아. 롤페즈 광주사장치및방사원검출장치
US6648227B2 (en) * 2000-10-20 2003-11-18 Symbol Technologies, Inc. Scanning module for a bar code reader with a focusing lens
TW287239B (es) * 1994-06-07 1996-10-01 Philips Electronics Nv
TW265419B (es) * 1994-06-07 1995-12-11 Philips Electronics Nv
JP2502482B2 (ja) * 1995-02-27 1996-05-29 キヤノン株式会社 光ヘッド装置
US5926450A (en) * 1995-03-15 1999-07-20 U.S. Philips Corporation Device for optically scanning record carriers of different thicknesses
US5642441A (en) * 1995-10-24 1997-06-24 Neopath, Inc. Separation apparatus and method for measuring focal plane
WO1997020311A1 (en) * 1995-11-27 1997-06-05 Philips Electronics N.V. Optical apparatus for scanning a tape-shaped record carrier
JPH11501443A (ja) * 1995-12-27 1999-02-02 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 光学的に読取可能な記録媒体を走査する装置
US5652744A (en) * 1996-02-08 1997-07-29 Industrial Technology Research Institute Single surface diffractive element for optical pickup heads
US5939710A (en) * 1996-09-30 1999-08-17 Daewoo Electronics Co., Ltd. Optical pickup system incorporating therein a beam splitter having a phase layer
FR2754096B1 (fr) * 1996-09-30 1999-12-10 Daewoo Electronics Co Ltd Dispositif a capteur optique de type compact
JPH10333025A (ja) 1997-05-28 1998-12-18 Pioneer Electron Corp 光ピックアップ装置
DE19930628A1 (de) * 1999-07-02 2001-02-01 Graul Renate Topographiemeßgerät
US6476382B1 (en) * 2000-09-27 2002-11-05 Carnegie Mellon University System and method for measuring the size of a focused optical spot
WO2003025919A1 (en) * 2001-09-20 2003-03-27 Koninklijke Philips Electronics N.V. Optical unit for an optical scanning device
US20040090667A1 (en) * 2002-03-22 2004-05-13 Carl-Zeiss-Stiftung Trading As Carl Zeiss Microscopy system
JP2006252599A (ja) * 2005-03-08 2006-09-21 Mitsubishi Electric Corp 光学装置及びそれを用いた光デイスク装置
JP2009110558A (ja) * 2007-10-26 2009-05-21 Sanyo Electric Co Ltd 光ピックアップ装置
DE102022114792B3 (de) 2022-06-13 2023-11-02 Sick Ag Lichtsenderanordnung und optoelektronische sensoranordnung

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE736396C (de) * 1936-06-25 1943-06-15 Klangfilm G M B H Einrichtung zur UEberwachung des wirklichen Spaltes und seines Bildes auf dem Film in Tonaufzeichnungsgeraeten
US2579177A (en) * 1943-08-23 1951-12-18 Miles George Herbert Optical projection apparatus
US2664024A (en) * 1949-03-23 1953-12-29 Zeiss Opton Optische Werke Wave length indicator in spectral apparatus
US2896499A (en) * 1956-02-24 1959-07-28 Philips Corp Colour-selective optical system corrected with regard to astigmatism
US3669673A (en) * 1970-10-23 1972-06-13 Rca Corp Recording of a continuous tone focused image on a diffraction grating
NL182990C (nl) * 1975-07-07 1988-06-16 Philips Nv Inrichting voor het uitlezen van een stralingsreflekterende registratiedrager.
US4025949A (en) * 1975-12-31 1977-05-24 Zenith Radio Corporation Symmetrical astigmatic focus sensing system
DE2622113C3 (de) * 1976-05-18 1982-04-08 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Optische Vorrichtung zur Korrektur der sphärischen Aberration eines sphärischen Hohlspiegels
NL7708200A (nl) * 1976-07-28 1978-01-31 Hitachi Ltd Automatische scherpstellingsinrichting.
NL7703077A (nl) * 1977-03-22 1978-09-26 Philips Nv Inrichting voor het uitlezen van een stralings- reflekterende registratiedrager.
NL7703076A (nl) * 1977-03-22 1978-09-26 Philips Nv Inrichting voor het uitlezen van een stralings- reflekterende registratiedrager.
JPS5439101A (en) * 1977-08-30 1979-03-26 Olympus Optical Co Ltd Automatic focusing method
JPS55927A (en) * 1978-06-16 1980-01-07 Pioneer Video Corp Focus servo unit of optical information reader

Also Published As

Publication number Publication date
NL7907216A (nl) 1981-03-31
JPS5657013A (en) 1981-05-19
IT8024923A0 (it) 1980-09-25
FR2466787A1 (fr) 1981-04-10
FR2466787B1 (fr) 1986-03-28
DE3035719A1 (de) 1981-04-09
DE3035719C2 (es) 1989-03-09
CA1144792A (en) 1983-04-19
ES495326A0 (es) 1981-06-01
GB2059057A (en) 1981-04-15
JPH028379B2 (es) 1990-02-23
IT1132757B (it) 1986-07-02
US4358200A (en) 1982-11-09
GB2059057B (en) 1983-09-21
AU6270980A (en) 1981-04-09

Similar Documents

Publication Publication Date Title
ES8105876A1 (es) Un sistema optico de deteccion de error de enfoque
JPS51113706A (en) Optically focusing device for focusing radiation beam
US4812643B1 (en) Detector device for a blade tracking system having two sensors
JPS5753832A (en) Method and device for recording of optical information
ATE81560T1 (de) Vorrichtung zum abtasten einer informationsflaeche mittels optischer strahlung.
DE3166473D1 (en) Focus detector
SE8207002L (sv) Optisk fokuseringsfeldetekteringsanordning
GR3003610T3 (es)
DE3270640D1 (en) Off-axis light beam defect detector
CA2252019A1 (en) Optical density measuring apparatus
GB1263563A (en) Optical measuring apparatus
JPS57192920A (en) Scanning optical system for compensating plane falling
ES504391A0 (es) Un aparato para escribir y-o leer informacion con ayuda de un haz de radiacion
NZ186732A (en) Focussing of read beam on optically readable record by astigmatic lens
US3745566A (en) Optical radiation detector
JPS57111838A (en) Optical information reader
JPS56160631A (en) Measuring apparatus for thickness and eccentricity of lens or the like
JPS57154206A (en) Focusing device
JPS5767815A (en) Measuring method for position of reflector using light
JPS57105832A (en) Detector for optical position
GB2022823A (en) A Device for Determining the Quality of the Finish Optical Surfaces
JPS57206810A (en) Measuring device for shielding device
JPS53107865A (en) Detector of minute undulations
JPS5250703A (en) Optical reading device for recording materials
GB570022A (en) A projection system for the inspection of internal surfaces