DE3524634C2 - - Google Patents

Info

Publication number
DE3524634C2
DE3524634C2 DE3524634A DE3524634A DE3524634C2 DE 3524634 C2 DE3524634 C2 DE 3524634C2 DE 3524634 A DE3524634 A DE 3524634A DE 3524634 A DE3524634 A DE 3524634A DE 3524634 C2 DE3524634 C2 DE 3524634C2
Authority
DE
Germany
Prior art keywords
objective lens
magnetic circuit
yoke
coil
drive
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.)
Expired
Application number
DE3524634A
Other languages
German (de)
English (en)
Other versions
DE3524634A1 (de
Inventor
Toshihiko Tokorozawa Saitama Jp Kurihara
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of DE3524634A1 publication Critical patent/DE3524634A1/de
Application granted granted Critical
Publication of DE3524634C2 publication Critical patent/DE3524634C2/de
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
    • G11B7/0933—Details of stationary parts
    • 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
    • G11B7/0927—Electromechanical actuators for lens positioning for focusing only
    • 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

  • Optical Recording Or Reproduction (AREA)
DE19853524634 1984-07-13 1985-07-10 Antriebs- und stuetzaufbau einer objektivlinse Granted DE3524634A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984105880U JPS6124820U (ja) 1984-07-13 1984-07-13 レンズ駆動装置

Publications (2)

Publication Number Publication Date
DE3524634A1 DE3524634A1 (de) 1986-01-16
DE3524634C2 true DE3524634C2 (en:Method) 1988-11-03

Family

ID=14419245

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853524634 Granted DE3524634A1 (de) 1984-07-13 1985-07-10 Antriebs- und stuetzaufbau einer objektivlinse

Country Status (4)

Country Link
US (1) US4720185A (en:Method)
JP (1) JPS6124820U (en:Method)
DE (1) DE3524634A1 (en:Method)
GB (1) GB2161955A (en:Method)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4842392A (en) * 1986-05-26 1989-06-27 Matsushita Electric Industrial Co., Ltd. Objective lens driving unit
US4905031A (en) * 1987-12-14 1990-02-27 Eastman Kodak Company Axial magnetic actuator
EP0403262A3 (en) * 1989-06-13 1991-10-16 Kabushiki Kaisha Toshiba Electro-magnetic actuator and optical disk
KR920022223A (ko) * 1991-05-13 1992-12-19 강진구 광학계 구동장치
US5386107A (en) * 1991-12-23 1995-01-31 Symbol Technologies, Inc. Scanning arrangement and method in which the focus is varied in operative correlation with the scanning angle
US5302812A (en) * 1991-12-23 1994-04-12 Symbol Technologies, Inc. Laser scanning device with automatic range and spot size adjustment
US5272569A (en) * 1992-06-01 1993-12-21 Eastman Kodak Company Apparatus for a fine adjustment focus actuator in an optical information storage system
US5563871A (en) * 1993-11-09 1996-10-08 International Business Machines Corporation. Rotary actuator with a magnetic bias bearing configuration for rotating an optical element in an optical data storage system
US5626034A (en) * 1995-11-17 1997-05-06 Manley; David Mixed refrigerants in ethylene recovery
US6098877A (en) * 1997-05-21 2000-08-08 Symbol Technologies, Inc. Interface and method for controlling an optical reader having a scanning module
JP4654358B2 (ja) * 2005-03-11 2011-03-16 シコー株式会社 レンズ駆動装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932700A (en) * 1974-02-04 1976-01-13 Zenith Radio Corporation Focus tracking registration for optical reproducing systems
US4422169A (en) * 1980-10-20 1983-12-20 Discovision Associates Lens assembly for a video recorder-playback machine
GB2088646B (en) * 1980-10-24 1984-09-12 Sony Corp Pick-up assemblies for disc players
JPS57122030U (en:Method) * 1981-01-26 1982-07-29
JPS57176543A (en) * 1981-04-20 1982-10-29 Sony Corp Optical type track scanner
JPS57198548A (en) * 1981-05-29 1982-12-06 Victor Co Of Japan Ltd Readout lens device
JPS57210456A (en) * 1981-06-22 1982-12-24 Sony Corp Objective lens device
JPS5848033U (ja) * 1981-09-22 1983-03-31 萬世工業株式会社 レンズ駆動装置
FR2522860B1 (fr) * 1982-03-02 1989-07-13 Thomson Csf Tete optique d'ecriture-lecture d'un disque optique et dispositif optique associe a une telle tete
US4568142A (en) * 1982-04-26 1986-02-04 Hitachi, Ltd. Objective lens drive apparatus
JPS59104735A (ja) * 1982-12-08 1984-06-16 Sony Corp 対物レンズ駆動装置
JPS59104733A (ja) * 1982-12-08 1984-06-16 Pioneer Electronic Corp 光学式情報読取装置における光学系駆動装置
US4566089A (en) * 1983-03-30 1986-01-21 Mitsubishi Denki Kabushiki Kaisha Deviation correction apparatus for optical disc light beams
JPS59168839U (ja) * 1983-04-28 1984-11-12 パイオニア株式会社 光学式情報読取装置における光学部品の駆動機構
NL8303700A (nl) * 1983-10-27 1985-05-17 Philips Nv Electro-optische inrichting.

Also Published As

Publication number Publication date
US4720185A (en) 1988-01-19
DE3524634A1 (de) 1986-01-16
GB8517551D0 (en) 1985-08-14
GB2161955A (en) 1986-01-22
JPS6124820U (ja) 1986-02-14

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8120 Willingness to grant licences paragraph 23
D2 Grant after examination
8364 No opposition during term of opposition