DE2556112A1 - Elektrodynamischer wandler - Google Patents

Elektrodynamischer wandler

Info

Publication number
DE2556112A1
DE2556112A1 DE19752556112 DE2556112A DE2556112A1 DE 2556112 A1 DE2556112 A1 DE 2556112A1 DE 19752556112 DE19752556112 DE 19752556112 DE 2556112 A DE2556112 A DE 2556112A DE 2556112 A1 DE2556112 A1 DE 2556112A1
Authority
DE
Germany
Prior art keywords
magnetic field
turns
conductive winding
winding
additional
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.)
Pending
Application number
DE19752556112
Other languages
German (de)
English (en)
Inventor
Roland Malissin
Claude Monlouis
Gerald Roullet
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
Publication of DE2556112A1 publication Critical patent/DE2556112A1/de
Pending 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

  • Indicating Measured Values (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Optical Recording Or Reproduction (AREA)
DE19752556112 1974-12-13 1975-12-12 Elektrodynamischer wandler Pending DE2556112A1 (de)

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
DE2556112A1 true DE2556112A1 (de) 1976-06-24

Family

ID=9146141

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752556112 Pending DE2556112A1 (de) 1974-12-13 1975-12-12 Elektrodynamischer wandler

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (6)

* 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
NL8001617A (nl) * 1980-03-19 1981-10-16 Philips Nv Inrichting voor het elektrodynamisch bestuurbaar zwenken van een optisch element.
FR2497378B1 (fr) * 1980-12-29 1985-06-28 Thomson Csf Dispositif compensateur de desequilibre d'un miroir de renvoi appartenant a un systeme optique d'eclairement d'un support d'information
JPS57178233A (en) * 1981-04-27 1982-11-02 Sony Corp Supporting structure of optical system
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
JPS59104735A (ja) * 1982-12-08 1984-06-16 Sony Corp 対物レンズ駆動装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
JPS5187081A (ja) 1976-07-30
FR2294605A1 (fr) 1976-07-09
NL7514438A (nl) 1976-06-15
IT1050331B (it) 1981-03-10

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