DE69025855D1 - Antriebseinheit für Objektivlinse - Google Patents

Antriebseinheit für Objektivlinse

Info

Publication number
DE69025855D1
DE69025855D1 DE69025855T DE69025855T DE69025855D1 DE 69025855 D1 DE69025855 D1 DE 69025855D1 DE 69025855 T DE69025855 T DE 69025855T DE 69025855 T DE69025855 T DE 69025855T DE 69025855 D1 DE69025855 D1 DE 69025855D1
Authority
DE
Germany
Prior art keywords
drive unit
objective lens
objective
lens
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 - Fee Related
Application number
DE69025855T
Other languages
English (en)
Other versions
DE69025855T2 (de
Inventor
Kikuo Yoshikawa
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE69025855D1 publication Critical patent/DE69025855D1/de
Publication of DE69025855T2 publication Critical patent/DE69025855T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G11B7/0935—Details of the moving parts
DE1990625855 1989-11-10 1990-10-30 Antriebseinheit für Objektivlinse Expired - Fee Related DE69025855T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1291183A JP2757891B2 (ja) 1989-11-10 1989-11-10 アクチュエータ

Publications (2)

Publication Number Publication Date
DE69025855D1 true DE69025855D1 (de) 1996-04-18
DE69025855T2 DE69025855T2 (de) 1996-08-29

Family

ID=17765537

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1990625855 Expired - Fee Related DE69025855T2 (de) 1989-11-10 1990-10-30 Antriebseinheit für Objektivlinse

Country Status (3)

Country Link
EP (1) EP0427441B1 (de)
JP (1) JP2757891B2 (de)
DE (1) DE69025855T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5519677A (en) * 1993-03-22 1996-05-21 Sony Corporation Biaxial actuator for driving an objective lens in both focusing and tracking directions
KR100298825B1 (ko) 1996-08-19 2001-10-26 하시모토 야스고로 대물 렌즈 구동 장치 및 이를 이용한 광디스크 장치
DE69836003T2 (de) * 1997-08-27 2007-05-10 NHK Spring Co., Ltd., Yokohama Stellglied für eine Objektivlinse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818066A (en) * 1984-01-30 1989-04-04 Canon Kabushiki Kaisha Objective lens driving device
JPH0668843B2 (ja) * 1985-08-16 1994-08-31 ソニー株式会社 光学ピツクアツプ装置
US5206762A (en) * 1988-12-01 1993-04-27 Kabushiki Kaisha Toshiba Viscoelastic substance and objective lens driving apparatus with the same
JP2706327B2 (ja) * 1989-09-28 1998-01-28 キヤノン株式会社 対物レンズ駆動装置

Also Published As

Publication number Publication date
JPH03154235A (ja) 1991-07-02
EP0427441B1 (de) 1996-03-13
EP0427441A3 (en) 1991-11-06
EP0427441A2 (de) 1991-05-15
DE69025855T2 (de) 1996-08-29
JP2757891B2 (ja) 1998-05-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee