JPS55146636A - Objective lens driver - Google Patents

Objective lens driver

Info

Publication number
JPS55146636A
JPS55146636A JP5223679A JP5223679A JPS55146636A JP S55146636 A JPS55146636 A JP S55146636A JP 5223679 A JP5223679 A JP 5223679A JP 5223679 A JP5223679 A JP 5223679A JP S55146636 A JPS55146636 A JP S55146636A
Authority
JP
Japan
Prior art keywords
objective lens
fixed
arrow
movable member
tracking error
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.)
Granted
Application number
JP5223679A
Other languages
Japanese (ja)
Other versions
JPH0132579B2 (en
Inventor
Toru Musha
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
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP5223679A priority Critical patent/JPS55146636A/en
Priority to GB8011937A priority patent/GB2052829B/en
Priority to US06/139,756 priority patent/US4479051A/en
Priority to FR8008310A priority patent/FR2455331B1/en
Priority to NL8002157A priority patent/NL192640C/en
Priority to DE3015042A priority patent/DE3015042C2/en
Publication of JPS55146636A publication Critical patent/JPS55146636A/en
Publication of JPH0132579B2 publication Critical patent/JPH0132579B2/ja
Granted 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

Landscapes

  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To make it possible to move an objective lens in a fixed direction as much as fixed by flowing currents through a couple of coils corresponding to a tracking error. CONSTITUTION:Yokes 2 and 2' are coupled with permanent magnets 1 fitted to fixed members 10 and 10', and movable member 6 made of a permanent magnet is arranged between those yokes, which are wound with coils 4 and 4' to provide a magnetic field as shown by arrow A. Movable member 6 is anchored to lens holding frame 8 holding object lens 7 and while one-side terminals of leaf springs 9 and 9' are fixed to holding frame 8, the other-side ones are also bonded to fixed members 10 and 10'. Thus, objective lens 7 is installed being displaceable crossing its optical axis and information track at right angles as shown by arrow B. Supplying coils 4 and 4' with currents corresponding to a tracking error applies movable member 6 made of the permanent magnet with arrow-B-directional force, and therefore objective lens 7 is displaced in the same direction, thereby correcting the tracking error.
JP5223679A 1979-04-27 1979-04-27 Objective lens driver Granted JPS55146636A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP5223679A JPS55146636A (en) 1979-04-27 1979-04-27 Objective lens driver
GB8011937A GB2052829B (en) 1979-04-27 1980-04-10 Apparatus for driving objective lens in tracking direction
US06/139,756 US4479051A (en) 1979-04-27 1980-04-14 Apparatus for driving objective lens in tracking direction
FR8008310A FR2455331B1 (en) 1979-04-27 1980-04-14 LENS CONTROL APPARATUS FOR CORRECTING POSITION ERRORS
NL8002157A NL192640C (en) 1979-04-27 1980-04-14 Apparatus for controlling an objective lens for use in an optical information reading system.
DE3015042A DE3015042C2 (en) 1979-04-27 1980-04-18 Adjusting device for the illumination objective of a playback device for plate-shaped, optically readable, rotating recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5223679A JPS55146636A (en) 1979-04-27 1979-04-27 Objective lens driver

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP9586286A Division JPS621134A (en) 1986-04-26 1986-04-26 Optical lens driving device

Publications (2)

Publication Number Publication Date
JPS55146636A true JPS55146636A (en) 1980-11-15
JPH0132579B2 JPH0132579B2 (en) 1989-07-06

Family

ID=12909083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5223679A Granted JPS55146636A (en) 1979-04-27 1979-04-27 Objective lens driver

Country Status (1)

Country Link
JP (1) JPS55146636A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200948A (en) * 1981-06-02 1982-12-09 Toshiba Corp Optical information reader
JPS5812145A (en) * 1981-07-13 1983-01-24 Matsushita Electric Ind Co Ltd Driving device of objective lens
JPS5862832A (en) * 1981-10-07 1983-04-14 Sanyo Electric Co Ltd Lens driving mechanism of optical disk player
US4386823A (en) * 1980-06-16 1983-06-07 Olympus Optical Co. Ltd. Objective lens driving device
JPS58182137A (en) * 1982-04-16 1983-10-25 Matsushita Electric Ind Co Ltd Holding device of movable body
JPS59101040A (en) * 1982-11-30 1984-06-11 Akai Electric Co Ltd Beam shutter for optical pickup

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332009U (en) * 1976-08-26 1978-03-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332009U (en) * 1976-08-26 1978-03-20

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386823A (en) * 1980-06-16 1983-06-07 Olympus Optical Co. Ltd. Objective lens driving device
JPS57200948A (en) * 1981-06-02 1982-12-09 Toshiba Corp Optical information reader
JPS5812145A (en) * 1981-07-13 1983-01-24 Matsushita Electric Ind Co Ltd Driving device of objective lens
JPH0313650B2 (en) * 1981-07-13 1991-02-25 Matsushita Electric Ind Co Ltd
JPS5862832A (en) * 1981-10-07 1983-04-14 Sanyo Electric Co Ltd Lens driving mechanism of optical disk player
JPS58182137A (en) * 1982-04-16 1983-10-25 Matsushita Electric Ind Co Ltd Holding device of movable body
JPH0145143B2 (en) * 1982-04-16 1989-10-02 Matsushita Electric Ind Co Ltd
JPS59101040A (en) * 1982-11-30 1984-06-11 Akai Electric Co Ltd Beam shutter for optical pickup
JPH0526257B2 (en) * 1982-11-30 1993-04-15 Akai Electric

Also Published As

Publication number Publication date
JPH0132579B2 (en) 1989-07-06

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