FR2294605A1 - Transducteur electrodynamique - Google Patents

Transducteur electrodynamique

Info

Publication number
FR2294605A1
FR2294605A1 FR7441133A FR7441133A FR2294605A1 FR 2294605 A1 FR2294605 A1 FR 2294605A1 FR 7441133 A FR7441133 A FR 7441133A FR 7441133 A FR7441133 A FR 7441133A FR 2294605 A1 FR2294605 A1 FR 2294605A1
Authority
FR
France
Prior art keywords
movable system
winding
designed
optical reading
electrodynamic transducer
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.)
Withdrawn
Application number
FR7441133A
Other languages
English (en)
Inventor
Roland Malissin
Gerald Roullet
Claude Monlouis
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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt SA
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 Thomson-Brandt SA filed Critical Thomson-Brandt SA
Priority to FR7441133A priority Critical patent/FR2294605A1/fr
Priority to NL7514438A priority patent/NL7514438A/xx
Priority to IT3017975A priority patent/IT1050331B/it
Priority to DE19752556112 priority patent/DE2556112A1/de
Priority to JP14831675A priority patent/JPS5187081A/ja
Publication of FR2294605A1 publication Critical patent/FR2294605A1/fr
Withdrawn legal-status Critical Current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
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Indicating Measured Values (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
FR7441133A 1974-12-13 1974-12-13 Transducteur electrodynamique Withdrawn FR2294605A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7441133A FR2294605A1 (fr) 1974-12-13 1974-12-13 Transducteur electrodynamique
NL7514438A NL7514438A (nl) 1974-12-13 1975-12-11 Elektrodynamische inrichting voor het overbrengen van vermogen.
IT3017975A IT1050331B (it) 1974-12-13 1975-12-11 Trasuttore elttrodinaimico
DE19752556112 DE2556112A1 (de) 1974-12-13 1975-12-12 Elektrodynamischer wandler
JP14831675A JPS5187081A (ja) 1974-12-13 1975-12-12 Denkikikaitekitoransudeyuusa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7441133A FR2294605A1 (fr) 1974-12-13 1974-12-13 Transducteur electrodynamique

Publications (1)

Publication Number Publication Date
FR2294605A1 true FR2294605A1 (fr) 1976-07-09

Family

ID=9146141

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7441133A Withdrawn FR2294605A1 (fr) 1974-12-13 1974-12-13 Transducteur electrodynamique

Country Status (5)

Country Link
JP (1) JPS5187081A (fr)
DE (1) DE2556112A1 (fr)
FR (1) FR2294605A1 (fr)
IT (1) IT1050331B (fr)
NL (1) NL7514438A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0055646A2 (fr) * 1980-12-29 1982-07-07 Thomson-Csf Dispositif optique d'accès à une piste sur un support d'information mobile
EP0063934A2 (fr) * 1981-04-27 1982-11-03 Sony Corporation Dispositifs optiques pour commander un faisceau lumineux
EP0036224B1 (fr) * 1980-03-19 1983-09-21 Koninklijke Philips Electronics N.V. Dispositif pour le pivotement d'un élément optique par commande électrodynamique
FR2537734A1 (fr) * 1982-12-08 1984-06-15 Sony Corp Dispositif de commande d'objectif

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58179635U (ja) * 1982-05-25 1983-12-01 株式会社三協精機製作所 ピックアップの対物レンズ駆動装置
DE3315848A1 (de) * 1983-04-30 1984-10-31 Philips Patentverwaltung Gmbh, 2000 Hamburg Aktuatorvorrichtung an schreib- und lesegeraeten zur staendigen korrektur der raeumlichen stellung eines schreib- oder lesemittels, insbesondere eines strahlenbuendels

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0033047A1 (fr) * 1980-01-24 1981-08-05 Thomson-Csf Equipage mobile d'un lecteur enregistreur de vidéodisque, et lecteur enregistreur de vidéodisque comprenant un tel équipage
EP0036224B1 (fr) * 1980-03-19 1983-09-21 Koninklijke Philips Electronics N.V. Dispositif pour le pivotement d'un élément optique par commande électrodynamique
EP0055646A2 (fr) * 1980-12-29 1982-07-07 Thomson-Csf Dispositif optique d'accès à une piste sur un support d'information mobile
EP0055646A3 (en) * 1980-12-29 1982-08-04 Thomson-Csf Device for optically accessing a track on a movable information carrier
US4589102A (en) * 1980-12-29 1986-05-13 Thomson-Csf Device for compensating the lack of balance of a deviating mirror belonging to an optical system for illuminating a data medium
EP0063934A2 (fr) * 1981-04-27 1982-11-03 Sony Corporation Dispositifs optiques pour commander un faisceau lumineux
EP0063934A3 (en) * 1981-04-27 1983-11-09 Sony Corporation Optical devices for controlling a light beam
FR2537734A1 (fr) * 1982-12-08 1984-06-15 Sony Corp Dispositif de commande d'objectif

Also Published As

Publication number Publication date
JPS5187081A (ja) 1976-07-30
NL7514438A (nl) 1976-06-15
DE2556112A1 (de) 1976-06-24
IT1050331B (it) 1981-03-10

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Legal Events

Date Code Title Description
ST Notification of lapse