JPS5778642A - Movable optical device - Google Patents

Movable optical device

Info

Publication number
JPS5778642A
JPS5778642A JP15211380A JP15211380A JPS5778642A JP S5778642 A JPS5778642 A JP S5778642A JP 15211380 A JP15211380 A JP 15211380A JP 15211380 A JP15211380 A JP 15211380A JP S5778642 A JPS5778642 A JP S5778642A
Authority
JP
Japan
Prior art keywords
optical axis
actuator
objective lens
driving
housing
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
JP15211380A
Other languages
Japanese (ja)
Inventor
Shinichi Tanaka
Tadashi Abe
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15211380A priority Critical patent/JPS5778642A/en
Publication of JPS5778642A publication Critical patent/JPS5778642A/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

Abstract

PURPOSE:To simplify a driving device, by providing plural driving devices whose driving directions meet at right angles, in the direction different from the optical axis, and driving an objective lens. CONSTITUTION:A magnetic circuit 10 is fixed to the housing, a spiral coil 9 is inserted into the gap, by which a movable part of the first actuator is formed. An objective lens 8 is driven in the symmetrical direction relating to an optical axis 15 by the second actuator being not shown in the figure, which has been placed at a symmetrical position against the first actuator relating to the optical axis 15, and the first actuator. A cylindrical slider 14 which slides in parallel with the optical axis 15 through the inside of a cylindrical guide 13 fixed to the housing, and the objective lens 8 are fitted by a parallel spring 12, and the objective lens 8 is displaced without inclining the optical axis.
JP15211380A 1980-10-31 1980-10-31 Movable optical device Pending JPS5778642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15211380A JPS5778642A (en) 1980-10-31 1980-10-31 Movable optical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15211380A JPS5778642A (en) 1980-10-31 1980-10-31 Movable optical device

Publications (1)

Publication Number Publication Date
JPS5778642A true JPS5778642A (en) 1982-05-17

Family

ID=15533334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15211380A Pending JPS5778642A (en) 1980-10-31 1980-10-31 Movable optical device

Country Status (1)

Country Link
JP (1) JPS5778642A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195337A (en) * 1983-04-20 1984-11-06 Matsushita Electric Ind Co Ltd Optical pickup

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195337A (en) * 1983-04-20 1984-11-06 Matsushita Electric Ind Co Ltd Optical pickup
JPH0546020B2 (en) * 1983-04-20 1993-07-12 Matsushita Electric Ind Co Ltd

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