Nothing Special   »   [go: up one dir, main page]

FR2425782B1 - Appareil de lecture d'informations optiques - Google Patents

Appareil de lecture d'informations optiques

Info

Publication number
FR2425782B1
FR2425782B1 FR7911773A FR7911773A FR2425782B1 FR 2425782 B1 FR2425782 B1 FR 2425782B1 FR 7911773 A FR7911773 A FR 7911773A FR 7911773 A FR7911773 A FR 7911773A FR 2425782 B1 FR2425782 B1 FR 2425782B1
Authority
FR
France
Prior art keywords
optical information
reading apparatus
information reading
optical
reading
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
FR7911773A
Other languages
English (en)
Other versions
FR2425782A1 (fr
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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
Priority claimed from JP5436778A external-priority patent/JPS54146612A/ja
Priority claimed from JP5436678A external-priority patent/JPS54146611A/ja
Priority claimed from JP6377478A external-priority patent/JPS54155802A/ja
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to FR7911773A priority Critical patent/FR2425782B1/fr
Publication of FR2425782A1 publication Critical patent/FR2425782A1/fr
Application granted granted Critical
Publication of FR2425782B1 publication Critical patent/FR2425782B1/fr
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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0937—Piezoelectric actuators
    • 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
FR7911773A 1978-05-10 1979-05-09 Appareil de lecture d'informations optiques Expired FR2425782B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7911773A FR2425782B1 (fr) 1978-05-10 1979-05-09 Appareil de lecture d'informations optiques

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP5436778A JPS54146612A (en) 1978-05-10 1978-05-10 Optical information read device
JP5436678A JPS54146611A (en) 1978-05-10 1978-05-10 Objective lens driving gear
JP6377478A JPS54155802A (en) 1978-05-30 1978-05-30 Objective lens driving device
FR7911773A FR2425782B1 (fr) 1978-05-10 1979-05-09 Appareil de lecture d'informations optiques

Publications (2)

Publication Number Publication Date
FR2425782A1 FR2425782A1 (fr) 1979-12-07
FR2425782B1 true FR2425782B1 (fr) 1988-02-12

Family

ID=27446394

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7911773A Expired FR2425782B1 (fr) 1978-05-10 1979-05-09 Appareil de lecture d'informations optiques

Country Status (1)

Country Link
FR (1) FR2425782B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052829B (en) * 1979-04-27 1983-01-12 Olympus Optical Co Apparatus for driving objective lens in tracking direction
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
GB2088646B (en) * 1980-10-24 1984-09-12 Sony Corp Pick-up assemblies for disc players
JPS5848033U (ja) * 1981-09-22 1983-03-31 萬世工業株式会社 レンズ駆動装置
US4553227A (en) * 1982-04-23 1985-11-12 Tokyo Shibaura Denki Kabushiki Kaisha Optical pickup
US4658390A (en) * 1983-04-18 1987-04-14 Sharp Kabushiki Kaisha Optical focus position control in an optical memory system
DE3500671A1 (de) * 1985-01-11 1986-07-17 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Lesevorrichtung zum optischen abtasten von auf einem beweglichen plattenfoermigen traeger aufgezeichneten informationen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530258A (en) * 1968-06-28 1970-09-22 Mca Technology Inc Video signal transducer having servo controlled flexible fiber optic track centering
FR2174353A5 (fr) * 1972-02-29 1973-10-12 Thomson Csf
US3932700A (en) * 1974-02-04 1976-01-13 Zenith Radio Corporation Focus tracking registration for optical reproducing systems
US3941927A (en) * 1974-11-11 1976-03-02 Battelle Development Corporation Optical fiber deflection device
JPS51114102A (en) * 1975-04-01 1976-10-07 Victor Co Of Japan Ltd Signal reading and control device for disc player
DE2661050C2 (fr) * 1975-10-08 1987-06-25 Olympus Optical Co., Ltd., Tokio/Tokyo, Jp
NL178915C (nl) * 1976-01-16 1986-06-02 Philips Nv Automatisch optisch focusseersysteem.
NL176315C (nl) * 1976-05-12 1985-03-18 Philips Nv Optische aftastinrichting.
DE2626470A1 (de) * 1976-06-12 1977-12-22 Philips Patentverwaltung Vorrichtung zur verstellung eines optischen elementes fuer einen rotierenden datentraeger

Also Published As

Publication number Publication date
FR2425782A1 (fr) 1979-12-07

Similar Documents

Publication Publication Date Title
FR2445580B1 (fr) Appareil d'enregistrement optique d'informations
FR2420794B1 (fr) Appareil de lecture optique
FR2598546B1 (fr) Dispositif d'entrainement d'un objectif d'appareil de lecture d'informations optiques
FR2422209B1 (fr) Dispositif de lecture optique
FR2332577A1 (fr) Appareil de lecture d'informations par voie optique
GB2025090B (en) Optical information recording apparatus
FR2304981A1 (fr) Dispositif d'enregistrement optique d'informations
FR2516687B1 (fr) Enregistrement d'informations pour systeme optique de lecture et d'enregistrement
FR2313731A1 (fr) Appareil de reproduction d'informations
GB2016744A (en) Optical read/write apparatus
FR2325987A1 (fr) Dispositif de lecture optique d'un enregistrement
FR2459513B1 (fr) Unite optique de traitement d'informations
FR2504302B1 (fr) Appareil de lecture d'un disque optique
FR2613866B1 (fr) Appareil d'enregistrement et de reproduction optique d'information
FR2439677B1 (fr) Procede et appareil d'enregistrement d'informations fixes et variables
FR2549272B1 (fr) Appareil de lecture optique d'informations enregistrees
FR2533732B1 (fr) Appareil de reproduction optique
FR2418514B1 (fr) Support d'enregistrement optique de l'information
BE870702A (fr) Agencement de transmission optique d'informations
FR2475776B1 (fr) Appareil de lecture de support d'enregistrement en forme de disque
FR2300388A1 (fr) Appareil de restitution optique d'informations
FR2540272B1 (fr) Dispositif de lecture d'un support d'information optique
FR2575578B1 (fr) Appareil d'enregistrement et de reproduction optiques d'informations
FR2580413B1 (fr) Appareil d'enregistrement-reproduction optiques d'informations
FR2472243B1 (fr) Dispositif d'enregistrement optique

Legal Events

Date Code Title Description
ST Notification of lapse