JPS5753835A - Light beam deflecting device - Google Patents

Light beam deflecting device

Info

Publication number
JPS5753835A
JPS5753835A JP12810680A JP12810680A JPS5753835A JP S5753835 A JPS5753835 A JP S5753835A JP 12810680 A JP12810680 A JP 12810680A JP 12810680 A JP12810680 A JP 12810680A JP S5753835 A JPS5753835 A JP S5753835A
Authority
JP
Japan
Prior art keywords
permanent magnets
magnets
repulsive force
same time
opposite
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
JP12810680A
Other languages
Japanese (ja)
Inventor
Koji Kamisaka
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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
Application filed by Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP12810680A priority Critical patent/JPS5753835A/en
Publication of JPS5753835A publication Critical patent/JPS5753835A/en
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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To ensure the accurate irradiation of laser beam and at the same time to simplify the control for distribution of an optical system, by fixing the permanent magnets at the outer circumference of a lens holder and arranging the magnets opposite to the permanent magnets to vary the magnetic foece to vary the repulsive force. CONSTITUTION:Permanent magnets 16a-16d are attached at the outer circumference of a lens holder 15 of a reading lens 14 and at the same time permanent magnets 17a-17d are attached at the tips of cores 19a-19d wound by energizing coils 18a-18d forming an electromagnet and opposite to the magnets 16a-16d, respectively. These permanent magnets are set opposite to each other among those having the same polarity to case the repulsive force. In such constitution, the energizing current is flowed to one or adjacent two of the coils 18a-18d to cause the repulsive force among the magnets to give oscillating motion to the upper edge of the holder 15 in every direction. The degree of oscillation is adjusted by the energizing intensity. As a result, the laser beam can be accurately irradiated and at the same time, the control of distribution can be simplified for an optical system.
JP12810680A 1980-09-16 1980-09-16 Light beam deflecting device Pending JPS5753835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12810680A JPS5753835A (en) 1980-09-16 1980-09-16 Light beam deflecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12810680A JPS5753835A (en) 1980-09-16 1980-09-16 Light beam deflecting device

Publications (1)

Publication Number Publication Date
JPS5753835A true JPS5753835A (en) 1982-03-31

Family

ID=14976531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12810680A Pending JPS5753835A (en) 1980-09-16 1980-09-16 Light beam deflecting device

Country Status (1)

Country Link
JP (1) JPS5753835A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557564A (en) * 1983-10-27 1985-12-10 U.S. Philips Corporation Movable scanning unit for an optical recording or playback apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557564A (en) * 1983-10-27 1985-12-10 U.S. Philips Corporation Movable scanning unit for an optical recording or playback apparatus

Similar Documents

Publication Publication Date Title
ES2104581T3 (en) METHOD AND APPARATUS TO REGULATE THE MOVEMENT OF IONS THROUGH A MEMBRANE.
KR870010506A (en) Magneto-optical recording device
US2933612A (en) Line tracer scanning head
ATE160655T1 (en) LINEAR MOTOR FOR EXTENDED MOVEMENT
JPS5774839A (en) Optical head
JPS5778653A (en) Laser recording method
DE69006304D1 (en) High power laser source with optical control of beam scanning.
EP0167843A3 (en) Arrangement for the external modulation of radiation emitted by a high-performance co2 laser
JPS5753835A (en) Light beam deflecting device
JPH0380014B2 (en)
JPS5472045A (en) Automatic focus control device
FR2402884A1 (en) DEVICE FOR FOCUSING ELECTROMAGNETIC RADIATION ON A SAMPLE
DK0473971T3 (en) Apparatus for carrying and moving a head for focusing a laser beam
DE3687840D1 (en) OPTICAL SCANNER UNIT.
JPS54109801A (en) Optical reader
JPS56141662A (en) Light beam scanner
JPS5284748A (en) Device for finely adjusting position at which laser light is focused
GB1245783A (en) Photochromic display device
JPS551186A (en) Electron beam exposure apparatus
JPS5680834A (en) Optical information reader
JPS57127932A (en) Multiaxis driving device
JPS56123079A (en) Image information reader
GB1375710A (en)
JPS5769540A (en) Optical information recording and producting device
SU629838A1 (en) Quasi-optical lens