JP4508134B2 - 対物レンズアクチュエータ及びそれを備えた光ピックアップ装置 - Google Patents
対物レンズアクチュエータ及びそれを備えた光ピックアップ装置 Download PDFInfo
- Publication number
- JP4508134B2 JP4508134B2 JP2006056313A JP2006056313A JP4508134B2 JP 4508134 B2 JP4508134 B2 JP 4508134B2 JP 2006056313 A JP2006056313 A JP 2006056313A JP 2006056313 A JP2006056313 A JP 2006056313A JP 4508134 B2 JP4508134 B2 JP 4508134B2
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- tilt
- coil
- lens holder
- lens actuator
- 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
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
- G11B7/0935—Details of the moving 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
- G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
- G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
5 対物レンズ
8 対物レンズアクチュエータ
9 ベース
10 対物レンズホルダ
11a、11b 永久磁石
13 フォーカス用コイル
15a、15b チルト用コイル
21a、21b、22a、22b 辺(チルト方向の駆動に有効に寄与する辺)
Claims (5)
- 対物レンズを保持する対物レンズホルダを前記対物レンズの光軸方向であるフォーカス方向と、前記フォーカス方向と垂直な方向であるトラッキング方向と、前記フォーカス方向と前記トラッキング方向との両方に直交する軸の軸周り方向であるチルト方向と、に駆動可能とする対物レンズアクチュエータにおいて、
前記対物レンズホルダの前記チルト方向への駆動は、対物レンズアクチュエータを構成するベース上に設けられる磁石が形成する磁界と前記対物レンズホルダに少なくとも1つ設けられるチルト用コイルを流れる電流との作用によって行われ、
前記対物レンズホルダの前記フォーカス方向への駆動は、前記磁界と、前記ベースと略平行となるように巻回された状態で前記対物レンズホルダに設けられるフォーカス用コイルとの作用によって行われ、
前記チルト用コイルは、
前記フォーカス用コイルの上側或いは下側に配置されるとともに、
前記チルト用コイルが有する複数の辺のうち前記チルト用コイルに前記電流を流した場合に前記磁界との作用により前記チルト方向への駆動に有効に寄与する辺の延長線上に、前記対物レンズホルダが前記チルト方向に駆動する場合の回転中心が存在するように、前記ベースに対して傾いて配置されていることを特徴とする対物レンズアクチュエータ。 - 前記チルト用コイルは略矩形状に巻回されて成ることを特徴とする請求項1に記載の対物レンズアクチュエータ。
- 前記チルト用コイルは複数個設けられ、前記対物レンズを挟む両側に同一数だけ配置されることを特徴とする請求項1又は請求項2に記載の対物レンズアクチュエータ。
- 前記チルト用コイルは、前記フォーカス用コイルよりも前記ベース側に配置されることを特徴とする請求項1から請求項3のうちのいずれか1項に記載の対物レンズアクチュエータ。
- 請求項1から請求項4のうちのいずれか1項に記載の対物レンズアクチュエータを備えることを特徴とする光ピックアップ装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006056313A JP4508134B2 (ja) | 2006-03-02 | 2006-03-02 | 対物レンズアクチュエータ及びそれを備えた光ピックアップ装置 |
US11/712,487 US7636279B2 (en) | 2006-03-02 | 2007-03-01 | Objective lens actuator and optical pickup device having the same |
DE102007010333A DE102007010333A1 (de) | 2006-03-02 | 2007-03-02 | Objektivlinsenaktuator und denselben aufweisende optische Abnehmervorrichtung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006056313A JP4508134B2 (ja) | 2006-03-02 | 2006-03-02 | 対物レンズアクチュエータ及びそれを備えた光ピックアップ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007234156A JP2007234156A (ja) | 2007-09-13 |
JP4508134B2 true JP4508134B2 (ja) | 2010-07-21 |
Family
ID=38471328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006056313A Expired - Fee Related JP4508134B2 (ja) | 2006-03-02 | 2006-03-02 | 対物レンズアクチュエータ及びそれを備えた光ピックアップ装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7636279B2 (ja) |
JP (1) | JP4508134B2 (ja) |
DE (1) | DE102007010333A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5226654B2 (ja) * | 2009-12-18 | 2013-07-03 | 株式会社日立メディアエレクトロニクス | 対物レンズ駆動装置および光ピックアップ |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005038527A (ja) * | 2003-07-16 | 2005-02-10 | Sony Corp | 光ピックアップ及びディスクドライブ装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04245034A (ja) | 1991-01-31 | 1992-09-01 | Toshiba Corp | 光学ヘッド装置 |
JPH06251405A (ja) | 1993-02-25 | 1994-09-09 | Matsushita Electric Ind Co Ltd | 光ディスク装置 |
DE19951862A1 (de) | 1999-10-27 | 2001-05-03 | Thomson Brandt Gmbh | Optische Abtasteinrichtung |
TWI269275B (en) | 2000-11-01 | 2006-12-21 | Koninkl Philips Electronics Nv | Optical scanning device comprising a tiltable lens system |
KR100436720B1 (ko) * | 2001-08-28 | 2004-06-22 | 삼성전기주식회사 | 광픽업 액츄에이터 |
JP2003123288A (ja) * | 2001-10-12 | 2003-04-25 | Funai Electric Co Ltd | 対物レンズ支持装置 |
KR100881666B1 (ko) | 2002-07-09 | 2009-02-06 | 삼성전자주식회사 | 광픽업의 대물렌즈 구동장치 |
JP2004326885A (ja) * | 2003-04-23 | 2004-11-18 | Funai Electric Co Ltd | 光ヘッドの対物レンズ駆動装置 |
-
2006
- 2006-03-02 JP JP2006056313A patent/JP4508134B2/ja not_active Expired - Fee Related
-
2007
- 2007-03-01 US US11/712,487 patent/US7636279B2/en not_active Expired - Fee Related
- 2007-03-02 DE DE102007010333A patent/DE102007010333A1/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005038527A (ja) * | 2003-07-16 | 2005-02-10 | Sony Corp | 光ピックアップ及びディスクドライブ装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2007234156A (ja) | 2007-09-13 |
US7636279B2 (en) | 2009-12-22 |
DE102007010333A1 (de) | 2007-11-08 |
US20070206461A1 (en) | 2007-09-06 |
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