JP4215599B2 - 対物レンズ駆動装置および光ピックアップ - Google Patents
対物レンズ駆動装置および光ピックアップ Download PDFInfo
- Publication number
- JP4215599B2 JP4215599B2 JP2003303837A JP2003303837A JP4215599B2 JP 4215599 B2 JP4215599 B2 JP 4215599B2 JP 2003303837 A JP2003303837 A JP 2003303837A JP 2003303837 A JP2003303837 A JP 2003303837A JP 4215599 B2 JP4215599 B2 JP 4215599B2
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- objective lens
- yokes
- contact
- focusing
- 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
Images
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
- G11B7/085—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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1372—Lenses
- G11B7/1374—Objective lenses
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Description
Claims (1)
- 光ディスクの記録面に光を集光する対物レンズと、この対物レンズを光ディスクに接近または離遠する方向および光ディスクの半径方向に動作させるための駆動手段であるフォーカシングコイルとトラッキングコイルと磁石とを有する磁気回路とを備え、前記磁気回路が前記対物レンズの周辺にディスク面内に配置され、フォーカシング方向に沿って伸びる2つ以上の外ヨークと、この外ヨークに取り付けられる2つ以上の磁石と、前記2つ以上の外ヨークの間に設けられた1つ以上の内ヨークと、前記3つ以上のヨーク部材と接触する上ヨーク部材とを有する対物レンズ駆動装置において、
前記外ヨークの1つが他の外ヨークおよび内ヨークの高さより低く形成され、この高さの低い外ヨークは前記上ヨークに形成された屈曲部とディスク面と平行な方向で接触し、他の外ヨークおよび内ヨークは前記上ヨークとフォーカシング方向で接触するようにしたことを特徴とする対物レンズ駆動装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003303837A JP4215599B2 (ja) | 2003-08-28 | 2003-08-28 | 対物レンズ駆動装置および光ピックアップ |
KR1020040038015A KR100587440B1 (ko) | 2003-08-28 | 2004-05-28 | 대물 렌즈 구동 장치 및 광디스크 장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003303837A JP4215599B2 (ja) | 2003-08-28 | 2003-08-28 | 対物レンズ駆動装置および光ピックアップ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005071547A JP2005071547A (ja) | 2005-03-17 |
JP4215599B2 true JP4215599B2 (ja) | 2009-01-28 |
Family
ID=34407693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003303837A Expired - Fee Related JP4215599B2 (ja) | 2003-08-28 | 2003-08-28 | 対物レンズ駆動装置および光ピックアップ |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4215599B2 (ja) |
KR (1) | KR100587440B1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101275318B1 (ko) * | 2011-11-08 | 2013-06-17 | 도시바삼성스토리지테크놀러지코리아 주식회사 | 광 픽업의 렌즈 구동 유닛 및 이를 적용하는 광 디스크 드라이브 |
CN112735484B (zh) * | 2020-12-17 | 2021-12-21 | 中国华录·松下电子信息有限公司 | 一种高精度物镜伺服跟踪装置 |
-
2003
- 2003-08-28 JP JP2003303837A patent/JP4215599B2/ja not_active Expired - Fee Related
-
2004
- 2004-05-28 KR KR1020040038015A patent/KR100587440B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR20050022263A (ko) | 2005-03-07 |
JP2005071547A (ja) | 2005-03-17 |
KR100587440B1 (ko) | 2006-06-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7542384B2 (en) | Objective lens actuator | |
JP5046918B2 (ja) | 移動記憶媒体にアクセスするためのピックアップおよびそのピックアップを有するドライブ | |
JP4215599B2 (ja) | 対物レンズ駆動装置および光ピックアップ | |
JP2010073227A (ja) | 対物レンズ駆動装置および光ピックアップ | |
JP4509854B2 (ja) | 対物レンズ駆動装置,光ピックアップ装置および光ディスク装置 | |
JP2004110971A (ja) | 対物レンズ駆動装置、光ピックアップ装置、及び光ディスク装置 | |
JP3892444B2 (ja) | 対物レンズ駆動装置、およびこれを用いた光ピックアップ装置 | |
JP4137108B2 (ja) | 光ピックアップ装置及び光ディスク装置 | |
JP4533322B2 (ja) | 光ピックアップ | |
JP2005050414A (ja) | 対物レンズ駆動装置および光ディスク装置 | |
JP2897090B2 (ja) | 対物レンズ駆動装置 | |
JP4508134B2 (ja) | 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 | |
JP3556393B2 (ja) | 光ピックアップ | |
JP3919171B2 (ja) | 対物レンズ駆動装置およびそれを備える光ピックアップ装置 | |
JPH0614254Y2 (ja) | 光学式情報読取装置におけるピックアップ装置 | |
JP2005018837A (ja) | 対物レンズ駆動装置 | |
JP4750826B2 (ja) | 光ピックアップ装置 | |
JPH10241174A (ja) | 光ヘッド装置 | |
JP5797571B2 (ja) | 光ピックアップ | |
JP2005056484A (ja) | 対物レンズ駆動装置および光ピックアップ装置 | |
JP3814203B2 (ja) | 対物レンズ駆動装置 | |
JP2007200510A (ja) | 光ピックアップ装置及び光ディスク装置 | |
JP2002288857A (ja) | 光ピックアップアクチュエータ | |
JP2008165919A (ja) | 光ピックアップ及びディスクドライブ装置 | |
JP2006277853A (ja) | 対物レンズ駆動装置とその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20050315 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20050315 |
|
RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20060511 |
|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20060511 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060609 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060609 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20071221 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080108 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080310 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080617 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080805 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20081021 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20081104 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111114 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111114 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121114 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121114 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131114 Year of fee payment: 5 |
|
LAPS | Cancellation because of no payment of annual fees |