SE437737B - Optisk avlesningsenhet for avsokning av en uppteckningsberare med en stralningsreflekterande, sparvis anordnad informationsstruktur under rorelse av uppteckningsberaren och avlesningsenheten relativt varandra - Google Patents

Optisk avlesningsenhet for avsokning av en uppteckningsberare med en stralningsreflekterande, sparvis anordnad informationsstruktur under rorelse av uppteckningsberaren och avlesningsenheten relativt varandra

Info

Publication number
SE437737B
SE437737B SE7708701A SE7708701A SE437737B SE 437737 B SE437737 B SE 437737B SE 7708701 A SE7708701 A SE 7708701A SE 7708701 A SE7708701 A SE 7708701A SE 437737 B SE437737 B SE 437737B
Authority
SE
Sweden
Prior art keywords
recorder
reading unit
sparely
scaning
structure under
Prior art date
Application number
SE7708701A
Other languages
English (en)
Swedish (sv)
Other versions
SE7708701L (sv
Inventor
J P J Heemskerk
K A Immink
C A J Simons
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 SE7708701L publication Critical patent/SE7708701L/xx
Publication of SE437737B publication Critical patent/SE437737B/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/062—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying the potential of the electrodes
    • H01S5/06233—Controlling other output parameters than intensity or frequency
    • H01S5/06243—Controlling other output parameters than intensity or frequency controlling the position or direction of the emitted beam

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)
SE7708701A 1976-08-02 1977-07-29 Optisk avlesningsenhet for avsokning av en uppteckningsberare med en stralningsreflekterande, sparvis anordnad informationsstruktur under rorelse av uppteckningsberaren och avlesningsenheten relativt varandra SE437737B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7608561A NL7608561A (nl) 1976-08-02 1976-08-02 Optische uitleeseenheid voor het aftasten van een registratiedrager voorzien van een stra- lingsreflekterende informatiestruktuur.

Publications (2)

Publication Number Publication Date
SE7708701L SE7708701L (sv) 1978-02-03
SE437737B true SE437737B (sv) 1985-03-11

Family

ID=19826682

Family Applications (3)

Application Number Title Priority Date Filing Date
SE7708701A SE437737B (sv) 1976-08-02 1977-07-29 Optisk avlesningsenhet for avsokning av en uppteckningsberare med en stralningsreflekterande, sparvis anordnad informationsstruktur under rorelse av uppteckningsberaren och avlesningsenheten relativt varandra
SE8405522A SE453440B (sv) 1976-08-02 1984-11-02 Optisk avlesningsenhet for avsokning av en uppteckningsberare med en stralningsreflekterande informationsstruktur
SE8405523A SE8405523D0 (sv) 1976-08-02 1984-11-02 Optisk avlesningsenhet for avsokning av en uppteckningsberare med en stralningsreflekterande informationsstruktur

Family Applications After (2)

Application Number Title Priority Date Filing Date
SE8405522A SE453440B (sv) 1976-08-02 1984-11-02 Optisk avlesningsenhet for avsokning av en uppteckningsberare med en stralningsreflekterande informationsstruktur
SE8405523A SE8405523D0 (sv) 1976-08-02 1984-11-02 Optisk avlesningsenhet for avsokning av en uppteckningsberare med en stralningsreflekterande informationsstruktur

Country Status (22)

Country Link
US (1) US4365323A (nl)
JP (4) JPS5317706A (nl)
AR (1) AR216770A1 (nl)
AT (1) AT369937B (nl)
AU (1) AU514749B2 (nl)
BE (1) BE857364A (nl)
BR (1) BR7705041A (nl)
CA (1) CA1109559A (nl)
CH (1) CH623147A5 (nl)
DE (3) DE2760057C2 (nl)
DK (1) DK341777A (nl)
ES (1) ES461197A1 (nl)
FR (1) FR2360957A1 (nl)
GB (1) GB1584664A (nl)
IT (1) IT1085620B (nl)
MX (1) MX143157A (nl)
NL (1) NL7608561A (nl)
NO (1) NO772674L (nl)
NZ (1) NZ184779A (nl)
PL (1) PL116457B1 (nl)
SE (3) SE437737B (nl)
ZA (1) ZA773820B (nl)

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FR2474740A1 (fr) * 1980-01-24 1981-07-31 Thomson Csf Equipage mobile d'un lecteur enregistreur de videodisque, et lecteur enregistreur de videodisque comprenant un tel equipage
JPS56127938A (en) * 1980-03-07 1981-10-07 Seiko Instr & Electronics Ltd Optical reproducer
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JPS57111838A (en) * 1980-12-27 1982-07-12 Olympus Optical Co Ltd Optical information reader
JPS5873023A (ja) * 1981-10-27 1983-05-02 Pioneer Electronic Corp 情報読取装置におけるトラツキングサ−ボ信号発生装置
JPS5880139A (ja) * 1981-11-04 1983-05-14 Sony Corp 光学ヘツド
FR2521377A1 (fr) * 1982-01-28 1983-08-12 Ricoh Kk Appareil d'enregistrement et de lecture optique
US4574371A (en) 1982-02-20 1986-03-04 Olympus Optical Company Limited Apparatus for recording and reproducing information on an optical disc
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JPS5936338A (ja) * 1982-08-24 1984-02-28 Matsushita Electric Ind Co Ltd 光デイスク記録再生方法
US4621353A (en) * 1982-09-09 1986-11-04 Burroughs Corporation Optical memory system providing improved focusing control and improved beam combining and separating apparatus
US4559622A (en) * 1982-09-09 1985-12-17 Burroughs Corporation Optical memory system providing improved focus detection and control by detecting reflected beam diameter variations at spaced predetermined locations in the system
US4622659A (en) * 1982-09-09 1986-11-11 Burroughs Corporation Focus detection and control apparatus for maintaining accurate focusing in an optical memory system by detecting reflected beam diameter variations at spaced predetermined locations
US4720088A (en) * 1983-05-18 1988-01-19 Canon Kabushiki Kaisha Optical system supporting device
NL8303168A (nl) * 1983-09-14 1985-04-01 Philips Nv Inrichting voor het uitlezen van balken gecodeerde informatie.
NL8400632A (nl) * 1984-02-29 1985-09-16 Philips Nv Inrichting voor het opwekken van elektromagnetische straling.
DE3413748A1 (de) * 1984-04-12 1985-10-17 Telefunken electronic GmbH, 7100 Heilbronn Optisches system
US4742506A (en) * 1984-07-12 1988-05-03 Sony Corporation Tracking error detecting apparatus for an optical head with skew error reduction by using an inclined header portion
JPH0762913B2 (ja) * 1984-08-17 1995-07-05 株式会社日立製作所 自動焦点制御方法
JPS61174021U (nl) * 1986-03-20 1986-10-29
JP2772521B2 (ja) * 1987-11-04 1998-07-02 旭光学工業株式会社 投光反射型光検出器の光学系
US5043569A (en) * 1987-11-04 1991-08-27 Asahi Kogaku Kogyo Kabushiki Kaisha Optical system of laser beam reader
US5047625A (en) * 1987-11-04 1991-09-10 Asahi Kogaku Kogyo Kabushiki Kaisha Optical system of laser beam reader
US5179269A (en) * 1989-03-01 1993-01-12 Asahi Kogaku Kogyo Kabushiki Kaisha Bar code reader having an automatically actuated visible light laser beam
NL8901442A (nl) * 1989-06-07 1991-01-02 Philips Nv Werkwijze en inrichting voor het bepalen van de positie van een vlak.
JPH0756706B2 (ja) * 1991-09-13 1995-06-14 株式会社日立製作所 光ディスク装置
JPH07140381A (ja) * 1993-11-18 1995-06-02 Sony Corp コマ収差補正方法
JPH0983082A (ja) * 1995-09-19 1997-03-28 Hitachi Ltd 半導体レーザ素子及び光ディスク装置、並びに光軸調整方法
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Also Published As

Publication number Publication date
ES461197A1 (es) 1978-06-01
BR7705041A (pt) 1978-06-06
JPH01264637A (ja) 1989-10-20
GB1584664A (en) 1981-02-18
JPS5317706A (en) 1978-02-18
DE2734257C2 (de) 1984-01-19
AU2741777A (en) 1979-02-01
FR2360957B1 (nl) 1985-04-05
ATA569577A (de) 1982-06-15
DK341777A (da) 1978-02-03
AT369937B (de) 1983-02-10
SE8405522L (sv) 1984-11-02
IT1085620B (it) 1985-05-28
NO772674L (no) 1978-02-03
DE2760056A1 (nl) 1982-09-16
SE8405523L (sv) 1984-11-02
FR2360957A1 (fr) 1978-03-03
PL199971A1 (pl) 1978-04-24
BE857364A (fr) 1978-02-01
SE7708701L (sv) 1978-02-03
JPS638536B2 (nl) 1988-02-23
NL7608561A (nl) 1978-02-06
NZ184779A (en) 1980-08-26
US4365323A (en) 1982-12-21
CH623147A5 (nl) 1981-05-15
SE8405523D0 (sv) 1984-11-02
ZA773820B (en) 1979-01-31
PL116457B1 (en) 1981-06-30
AR216770A1 (es) 1980-01-31
CA1109559A (en) 1981-09-22
SE453440B (sv) 1988-02-01
JPH01271925A (ja) 1989-10-31
AU514749B2 (en) 1981-02-26
DE2734257A1 (de) 1978-02-09
MX143157A (es) 1981-03-25
JPH01264638A (ja) 1989-10-20
SE8405522D0 (sv) 1984-11-02
DE2760057C2 (de) 1985-11-14

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