JPS5782235A - Optical pickup - Google Patents

Optical pickup

Info

Publication number
JPS5782235A
JPS5782235A JP15922680A JP15922680A JPS5782235A JP S5782235 A JPS5782235 A JP S5782235A JP 15922680 A JP15922680 A JP 15922680A JP 15922680 A JP15922680 A JP 15922680A JP S5782235 A JPS5782235 A JP S5782235A
Authority
JP
Japan
Prior art keywords
coil
actuator
focus control
tracking
mirror
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
JP15922680A
Other languages
Japanese (ja)
Other versions
JPS6233654B2 (en
Inventor
Kenjiro Kime
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP15922680A priority Critical patent/JPS5782235A/en
Publication of JPS5782235A publication Critical patent/JPS5782235A/en
Publication of JPS6233654B2 publication Critical patent/JPS6233654B2/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
    • 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
    • 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
    • G11B7/0932—Details of sprung supports

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To obtain a small-sized optical pickup providing a two-axis actuator, by constituting a focus control actuator and a tracking actuator in one body and omitting a mirror. CONSTITUTION:An incident light passes through a mirror barrel 1 and is focused by an objective lens 10. A focus control actuator is constituted by a magnetic circuit (not shown) consisting of a ringlike magnet and a yoke under an external frame 8 and by a coil 4 connected to a coil holder 3. When a correction current flows to the coil 4, the mirror barrel 1 is slided and displaced toward axial direction in a bearing 2 for focus control. A tracking actuator is constituted by a magnetic circuit consisting of a magnet 13a and a yoke 13b above the external frame 8 and by a coil 12. When a correction current flows to the coil 12, the bearing 2 is displaced toward the arrow B against the elastic force of hollow cylindrical rubber 5 for tracking control.
JP15922680A 1980-11-11 1980-11-11 Optical pickup Granted JPS5782235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15922680A JPS5782235A (en) 1980-11-11 1980-11-11 Optical pickup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15922680A JPS5782235A (en) 1980-11-11 1980-11-11 Optical pickup

Publications (2)

Publication Number Publication Date
JPS5782235A true JPS5782235A (en) 1982-05-22
JPS6233654B2 JPS6233654B2 (en) 1987-07-22

Family

ID=15689089

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15922680A Granted JPS5782235A (en) 1980-11-11 1980-11-11 Optical pickup

Country Status (1)

Country Link
JP (1) JPS5782235A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990240A (en) * 1982-11-16 1984-05-24 Olympus Optical Co Ltd Objective driving device
US4866690A (en) * 1985-07-19 1989-09-12 Yamaha Corporation Vibration imparted focus search devices in an optical type disc playback device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5161726A (en) * 1974-11-27 1976-05-28 Nippon Musical Instruments Mfg

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5161726A (en) * 1974-11-27 1976-05-28 Nippon Musical Instruments Mfg

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990240A (en) * 1982-11-16 1984-05-24 Olympus Optical Co Ltd Objective driving device
JPH0435813B2 (en) * 1982-11-16 1992-06-12 Olympus Optical Co
US4866690A (en) * 1985-07-19 1989-09-12 Yamaha Corporation Vibration imparted focus search devices in an optical type disc playback device

Also Published As

Publication number Publication date
JPS6233654B2 (en) 1987-07-22

Similar Documents

Publication Publication Date Title
JPS57103131A (en) Biaxial driver
JPS55117745A (en) Disk reproducing device using optical stylus
JPS57178233A (en) Supporting structure of optical system
JPS57120240A (en) Optical disk player
JPS5771532A (en) Two axia driver
JPS5793307A (en) Automatic focusing system
JPS5720927A (en) Objective lens driver
JPS5782235A (en) Optical pickup
JPS57198548A (en) Readout lens device
JPS5782234A (en) Optical head
JPS5718035A (en) Optical recording and reproducing device
EP0773537A3 (en) Drive apparatus for objective lens
JPS54161929A (en) Auto focusing moving mechanism
JPS54146612A (en) Optical information read device
JPS53129605A (en) Focus controller of optical reproducer
JPS55146636A (en) Objective lens driver
JPS5542368A (en) Pickup controller
JPS5788534A (en) Controller for light converging position
JPS57100634A (en) Controller for light focusing position of optical information device
JPS57100633A (en) Controller for light focusing position
JPS56117337A (en) Driving device for objective lens
JPS547927A (en) Photographic lens of excellent focusing operation
JPS5771529A (en) Movable lens for controlling focus
JPS56156938A (en) Focus control device of laser beam
JPS57200949A (en) Optical recording information reader