KR100633201B1 - 광픽업용 엑츄에이터 - Google Patents
광픽업용 엑츄에이터 Download PDFInfo
- Publication number
- KR100633201B1 KR100633201B1 KR1019990061233A KR19990061233A KR100633201B1 KR 100633201 B1 KR100633201 B1 KR 100633201B1 KR 1019990061233 A KR1019990061233 A KR 1019990061233A KR 19990061233 A KR19990061233 A KR 19990061233A KR 100633201 B1 KR100633201 B1 KR 100633201B1
- Authority
- KR
- South Korea
- Prior art keywords
- coil
- magnetic flux
- focusing coil
- actuator
- focusing
- Prior art date
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
- G11B7/09—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
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
자기회로 주변에 위치하는 서브 코일과, 자기회로로부터 발생되어 서브 코일을 쇄교하는 누설자속을 제어하기 위한 자속제어부재를 구비한다.
Claims (5)
- 대물렌즈에 대하여 비대칭 구조를 갖는 가동부와, 영구자석 및 요오크를 포함하는 고정부로 구성된 광픽업 액츄에이터에 있어서,상기 영구자석, 상기 요오크, 그리고 트랙킹 코일 및 포커싱 코일로 구성된 자기회로에서 발생되어, 상기 포커싱 코일의 서브 코일부와 쇄교하는 누설 자속을 조절하기 위한 자속제어부재를 설치하되,상기 자속제어부재는, 상기 요오크의 상부에 형성된 개구부를 차폐하기 위한 강철 계통의 자성체 또는 영구자석의 캡 부재가 사용되며,상기 캡 부재에는, 소정 형상의 홀이 형성되어 있는 것을 특징으로 하는 광픽업용 액츄에이터.
- 삭제
- 제 1 항에 있어서,상기 캡부재의 길이 및 높이는, 포커싱 구동의 중심점과, 상기 가동부의 질량 중심 사이의 거리에 의해 결정되는 것을 특징으로 하는 광픽업용 액츄에이터.
- 삭제
- 제 1 항에 있어서,상기 캡부재의 크기는, 상기 자기회로에서 발생되어 상기 포커싱 코일의 서브 코일부와 쇄교하는 누설 자속량에 의해 결정되는 것을 특징으로 하는 광픽업용 액츄에이터.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990061233A KR100633201B1 (ko) | 1999-12-23 | 1999-12-23 | 광픽업용 엑츄에이터 |
US09/686,788 US6788638B1 (en) | 1999-12-23 | 2000-10-12 | Optical pickup actuator having a magnetic flux-controlling member |
JP2000384787A JP2001202640A (ja) | 1999-12-23 | 2000-12-19 | 光ピックアップアクチュエータ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990061233A KR100633201B1 (ko) | 1999-12-23 | 1999-12-23 | 광픽업용 엑츄에이터 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20010057822A KR20010057822A (ko) | 2001-07-05 |
KR100633201B1 true KR100633201B1 (ko) | 2006-10-11 |
Family
ID=19628880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019990061233A KR100633201B1 (ko) | 1999-12-23 | 1999-12-23 | 광픽업용 엑츄에이터 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6788638B1 (ko) |
JP (1) | JP2001202640A (ko) |
KR (1) | KR100633201B1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100611337B1 (ko) * | 2001-09-19 | 2006-08-11 | 주식회사 만도 | 브레이크시스템용 솔레노이드밸브 |
US7193937B2 (en) * | 2002-10-04 | 2007-03-20 | Matsushita Electric Industrial Co., Ltd. | Objective lens driving device and optical disk apparatus |
CN101461026B (zh) * | 2006-06-07 | 2012-01-18 | Fei公司 | 与包含真空室的装置一起使用的滑动轴承 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3317519B2 (ja) | 1992-07-01 | 2002-08-26 | オリンパス光学工業株式会社 | 光学系駆動装置 |
JP3371384B2 (ja) | 1993-09-22 | 2003-01-27 | ソニー株式会社 | 二軸アクチュエータ |
JPH07147021A (ja) | 1993-11-22 | 1995-06-06 | Tdk Corp | 対物レンズ駆動装置 |
JPH0877584A (ja) * | 1994-08-31 | 1996-03-22 | Pioneer Electron Corp | 対物レンズ駆動装置 |
JP3640220B2 (ja) | 1995-03-24 | 2005-04-20 | Tdk株式会社 | 光ディスク装置の対物レンズ駆動装置 |
JPH0935294A (ja) | 1995-07-13 | 1997-02-07 | Sony Corp | 二軸アクチュエータ |
KR200146342Y1 (ko) * | 1996-12-30 | 1999-06-15 | 전주범 | 디브이디용 슬라이딩 액츄에이터 |
KR100220520B1 (ko) * | 1997-02-28 | 1999-09-15 | 전주범 | 광픽업 액츄에이터 |
JPH1186307A (ja) | 1997-09-11 | 1999-03-30 | Canon Electron Inc | 対物レンズ駆動装置 |
TW360400U (en) * | 1997-10-30 | 1999-06-01 | Ind Tech Res Inst | Magnetic floating actuator |
-
1999
- 1999-12-23 KR KR1019990061233A patent/KR100633201B1/ko active IP Right Grant
-
2000
- 2000-10-12 US US09/686,788 patent/US6788638B1/en not_active Expired - Lifetime
- 2000-12-19 JP JP2000384787A patent/JP2001202640A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
KR20010057822A (ko) | 2001-07-05 |
JP2001202640A (ja) | 2001-07-27 |
US6788638B1 (en) | 2004-09-07 |
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