JP4666236B2 - 光ピックアップ及びディスクドライブ装置 - Google Patents
光ピックアップ及びディスクドライブ装置 Download PDFInfo
- Publication number
- JP4666236B2 JP4666236B2 JP2008150412A JP2008150412A JP4666236B2 JP 4666236 B2 JP4666236 B2 JP 4666236B2 JP 2008150412 A JP2008150412 A JP 2008150412A JP 2008150412 A JP2008150412 A JP 2008150412A JP 4666236 B2 JP4666236 B2 JP 4666236B2
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- JP
- Japan
- Prior art keywords
- tracking
- magnet
- pole
- objective lens
- movable block
- 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
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-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
-
- 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
-
- 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
-
- 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
-
- 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
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08582—Sled-type positioners
-
- 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
Claims (5)
- ディスクテーブルに装着されるディスク状記録媒体の半径方向へ移動される移動ベースと、
前記移動ベースに配置され、移動ベースに固定された固定ブロック側にのみ磁気回路が設けられた対物レンズを有する対物レンズ駆動装置とを備え、
前記対物レンズ駆動装置は、
前記移動ベースに固定された固定ブロックと、
前記対物レンズと該対物レンズを保持するレンズホルダーとを有し前記固定ブロックに対して少なくとも前記ディスク状記録媒体の記録面に離接する方向であるフォーカス方向及び前記ディスク状記録媒体の略半径方向であるトラッキング方向へ動作される可動ブロックと、
前記固定ブロックと前記可動ブロックを連結する複数の支持バネと、
前記可動ブロックを前記フォーカス方向へ動作させるフォーカス用マグネットと、
前記可動ブロックを前記トラッキング方向へ動作させ2極に着磁されたトラッキング用マグネットと、
前記フォーカス用マグネットに対向して位置されるフォーカス用コイルと、
前記トラッキング用マグネットに対向して位置され前記トラッキング方向に離隔して位置する一対のトラッキング用コイルとを備え、
前記トラッキング用マグネットのN極とS極が前記トラッキング方向において隣接して位置され、
前記トラッキング用マグネットのN極とS極の境界線が一直線を除く任意の線分によって形成され、
前記トラッキング用マグネットをフォーカス方向における中央線によって2等分したときに、N極とS極をそれぞれ前記中央線を基準とした線対称の形状に形成し、
前記トラッキング用マグネットを前記フォーカス方向において結合された少なくとも二つの部材によって形成し、
前記トラッキング用マグネットのN極とS極の境界線を、前記フォーカス方向に対して傾斜された連続する2直線によって形成した
光ピックアップ。 - 前記トラッキング用マグネットのN極とS極の境界線がそれぞれ連続した3本の直線部によって構成されている
請求項1に記載の光ピックアップ。 - 前記トラッキング用マグネットのN極とS極の境界線がそれぞれ連続した5本の直線部によって構成されている
請求項1に記載の光ピックアップ。 - 前記トラッキング用マグネットがそれぞれ上下方向において結合された三つの部材である上側マグネット、中側マグネット及び下側マグネットによって構成されている
請求項1に記載の光ピックアップ。 - ディスク状記録媒体が装着されるディスクテーブルと、
前記ディスクテーブルに装着されるディスク状記録媒体の半径方向へ移動される移動ベースと該移動ベースに配置され、移動ベースに固定された固定ブロック側にのみ磁気回路が設けられた対物レンズを有する対物レンズ駆動装置とを備えると共に前記ディスクテーブルに装着される前記ディスク状記録媒体に対して対物レンズを介してレーザー光を照射する光ピックアップとを備え、
前記対物レンズ駆動装置は、
前記移動ベースに固定された固定ブロックと、
前記対物レンズと該対物レンズを保持するレンズホルダーとを有し前記固定ブロックに対して少なくとも前記ディスク状記録媒体の記録面に離接する方向であるフォーカス方向及び前記ディスク状記録媒体の略半径方向であるトラッキング方向へ動作される可動ブロックと、
前記固定ブロックと前記可動ブロックを連結する複数の支持バネと、
前記可動ブロックを前記フォーカス方向へ動作させるフォーカス用マグネットと、
前記可動ブロックを前記トラッキング方向へ動作させ2極に着磁されたトラッキング用マグネットと、
前記フォーカス用マグネットに対向して位置されるフォーカス用コイルと、
前記トラッキング用マグネットに対向して位置され前記トラッキング方向に離隔して位置する一対のトラッキング用コイルとを備え、
前記トラッキング用マグネットのN極とS極が前記トラッキング方向において隣接して位置され、
前記トラッキング用マグネットのN極とS極の境界線が一直線を除く任意の線分によって形成され、
前記トラッキング用マグネットをフォーカス方向における中央線によって2等分したときに、N極とS極をそれぞれ前記中央線を基準とした線対称の形状に形成し、
前記トラッキング用マグネットを前記フォーカス方向において結合された少なくとも二つの部材によって形成し、
前記トラッキング用マグネットのN極とS極の境界線を、前記フォーカス方向に対して傾斜された連続する2直線によって形成した
ディスクドライブ装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008150412A JP4666236B2 (ja) | 2008-06-09 | 2008-06-09 | 光ピックアップ及びディスクドライブ装置 |
US12/434,035 US8028310B2 (en) | 2008-06-09 | 2009-05-01 | Optical pickup and disk drive device |
TW098117480A TWI390522B (zh) | 2008-06-09 | 2009-05-26 | 光拾取器及碟片驅動裝置 |
KR1020090050362A KR20090127817A (ko) | 2008-06-09 | 2009-06-08 | 광 픽업 및 디스크 드라이브 장치 |
CN200910146491XA CN101604536B (zh) | 2008-06-09 | 2009-06-09 | 光学拾取器和磁盘驱动装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008150412A JP4666236B2 (ja) | 2008-06-09 | 2008-06-09 | 光ピックアップ及びディスクドライブ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009295256A JP2009295256A (ja) | 2009-12-17 |
JP4666236B2 true JP4666236B2 (ja) | 2011-04-06 |
Family
ID=41400212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008150412A Expired - Fee Related JP4666236B2 (ja) | 2008-06-09 | 2008-06-09 | 光ピックアップ及びディスクドライブ装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8028310B2 (ja) |
JP (1) | JP4666236B2 (ja) |
KR (1) | KR20090127817A (ja) |
CN (1) | CN101604536B (ja) |
TW (1) | TWI390522B (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10359597B2 (en) * | 2016-08-24 | 2019-07-23 | Tdk Taiwan Corp. | Optical system |
US11243370B2 (en) | 2016-08-24 | 2022-02-08 | Tdk Taiwan Corp. | Optical system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001222830A (ja) * | 2000-02-08 | 2001-08-17 | Pioneer Electronic Corp | ディスクプレーヤのレンズ駆動装置 |
JP2006294157A (ja) * | 2005-04-13 | 2006-10-26 | Tdk Corp | 光ピックアップアクチュエータと光ピックアップと光記録再生装置 |
JP2007149310A (ja) * | 2005-10-25 | 2007-06-14 | Sony Corp | 光ピックアップ及び光ディスク装置 |
JP2007149303A (ja) * | 2005-10-25 | 2007-06-14 | Sony Corp | 光ピックアップ及び光ディスク装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2326430A (en) * | 1940-06-14 | 1943-08-10 | Gen Motors Corp | Propeller manufacture |
MY109874A (en) * | 1992-12-17 | 1997-09-30 | Koninklijke Philips Electronics Nv | Scanning device and optical player comprising the scanning device |
JPH10334486A (ja) | 1997-05-27 | 1998-12-18 | Mitsumi Electric Co Ltd | 光ピックアップ |
DE60029901T2 (de) * | 1999-10-15 | 2006-12-21 | Pioneer Corporation | Linsenantriebsvorrichtung |
US20030016597A1 (en) * | 2001-07-18 | 2003-01-23 | Takashi Haruguchi | Actuator apparatus for optical pickup having tilt control |
JP4522027B2 (ja) * | 2001-07-31 | 2010-08-11 | パイオニア株式会社 | アクチュエータ用マグネット、アクチュエータ、および、着磁装置 |
EP1355301A3 (en) * | 2002-04-20 | 2006-03-29 | Lg Electronics Inc. | Optical pick-up actuator |
KR100878525B1 (ko) * | 2002-05-24 | 2009-01-13 | 삼성전자주식회사 | 광픽업 액츄에이터 |
JP2004005813A (ja) * | 2002-05-31 | 2004-01-08 | Tdk Corp | 光ヘッド装置及びそれを用いた光再生装置 |
JP2005251358A (ja) * | 2004-03-08 | 2005-09-15 | Sankyo Seiki Mfg Co Ltd | 対物レンズ駆動装置、及びそれを備えた光ヘッド装置 |
JP2008523532A (ja) * | 2004-12-09 | 2008-07-03 | トムソン ライセンシング | 光スキャナ用のアクチュエータ |
KR20060074443A (ko) * | 2004-12-27 | 2006-07-03 | 엘지전자 주식회사 | 광 픽업 액츄에이터 |
JP2006202380A (ja) | 2005-01-19 | 2006-08-03 | Sony Corp | 光ピックアップおよび光ディスク装置 |
JP4537309B2 (ja) * | 2005-03-29 | 2010-09-01 | 富士通株式会社 | 光ピックアップ |
JP4486020B2 (ja) * | 2005-09-30 | 2010-06-23 | 株式会社日立メディアエレクトロニクス | 光ピックアップ装置 |
TWI322424B (en) * | 2005-12-27 | 2010-03-21 | Ind Tech Res Inst | Objective lens deiving apparatus |
-
2008
- 2008-06-09 JP JP2008150412A patent/JP4666236B2/ja not_active Expired - Fee Related
-
2009
- 2009-05-01 US US12/434,035 patent/US8028310B2/en not_active Expired - Fee Related
- 2009-05-26 TW TW098117480A patent/TWI390522B/zh not_active IP Right Cessation
- 2009-06-08 KR KR1020090050362A patent/KR20090127817A/ko not_active Application Discontinuation
- 2009-06-09 CN CN200910146491XA patent/CN101604536B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001222830A (ja) * | 2000-02-08 | 2001-08-17 | Pioneer Electronic Corp | ディスクプレーヤのレンズ駆動装置 |
JP2006294157A (ja) * | 2005-04-13 | 2006-10-26 | Tdk Corp | 光ピックアップアクチュエータと光ピックアップと光記録再生装置 |
JP2007149310A (ja) * | 2005-10-25 | 2007-06-14 | Sony Corp | 光ピックアップ及び光ディスク装置 |
JP2007149303A (ja) * | 2005-10-25 | 2007-06-14 | Sony Corp | 光ピックアップ及び光ディスク装置 |
Also Published As
Publication number | Publication date |
---|---|
TW201007722A (en) | 2010-02-16 |
CN101604536B (zh) | 2011-11-02 |
JP2009295256A (ja) | 2009-12-17 |
CN101604536A (zh) | 2009-12-16 |
TWI390522B (zh) | 2013-03-21 |
KR20090127817A (ko) | 2009-12-14 |
US8028310B2 (en) | 2011-09-27 |
US20090303844A1 (en) | 2009-12-10 |
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