KR100399038B1 - 압전 세라믹 작동기를 이용한 cd-rom/dvd-rom - Google Patents
압전 세라믹 작동기를 이용한 cd-rom/dvd-rom Download PDFInfo
- Publication number
- KR100399038B1 KR100399038B1 KR10-1999-0001578A KR19990001578A KR100399038B1 KR 100399038 B1 KR100399038 B1 KR 100399038B1 KR 19990001578 A KR19990001578 A KR 19990001578A KR 100399038 B1 KR100399038 B1 KR 100399038B1
- Authority
- KR
- South Korea
- Prior art keywords
- actuator
- rom
- piezoelectric ceramic
- objective lens
- optical pickup
- Prior art date
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Classifications
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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
- G11B7/09—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
- G11B7/0937—Piezoelectric actuators
-
- 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
- G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
-
- 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)
Abstract
Description
Claims (4)
- 디스크(35)의 대물렌즈(33)를 광축 방향으로 움직여서 디스크(35)의 반사면이 초점 심도 내에 들어오도록 상기 대물 렌즈(33)의 위치를 조정하는 포커싱용 압전 세라믹 작동기(43)와, 아주 미세한 간격으로 나열되어 있는 상기 디스크(45)의 트랙을 추적하기 위해 상기 대물 렌즈(33)의 위치를 마이크로하게 이동시키도록 하는 트랙킹용 압전 세라믹 작동기(44)로 구성되며, 상기 포커싱용 압전 세라믹 작동기(43)는 상기 대물렌즈(33) 홀더(4)의 베이스(46)측 측면 중앙에 상하로 선회 가능하게 장착되어 있으며, 상기 트랙킹용 압전세라믹 작동기(44)는 상기 홀더(40)의 베이스(46)측 측면의 상기 바이모프(51) 좌우측에 좌우로 선회 가능하게 장착된 2개의 압전 작동기로 구성되어 대물렌즈(33)를 직접 포커싱 및 트랙킹 방향으로 동시에 위치 추적 제어할 수 있게 포함한 구성으로 이루어짐을 특징으로 하는 압전 세라믹 작동기를 이용한 CD-ROM/DVD-ROM 광픽업 장치.
- 제1 항에 있어서, 상기 포커싱용 압전 세라믹 작동기(43)와 상기 트랙킹용 압전 세라믹 작동기(44)는 중앙의 심 재료(49), 상기 심 재료(49)의 상하면에 각각 부착되는 압전 세라믹(47)으로 구성된 압전 세라믹 바이모프(51)로 이루어져 있으며, 상기 심 재료(49)에는 음의 공통전극(50)이 부착되고, 상기 압전 세라믹(47)에는 양의 전극(48)이 부착되어 있는 것을 특징으로 하는 세라믹 압전 작동기를 이용한 CD-ROM/DVD-ROM 광픽업 장치.
- 삭제
- 제1 항 또는 제2 항에 있어서, 상기 포커싱용 압전 세라믹 작동기(43)는 상기 대물렌즈 홀더(40)의 상기 베이스(46)측 측면에 횡방향으로 배열되어 있는 상기 바이모프(51)와, 상기 바이모프(51)의 상기 홀더(40) 측 끝단에 사하로 피벗 회전 가능하도록 형성된 힌지(42)로 이루어져 있으며, 상기 트랙킹용 압전 세라믹 작동기(44)는 상기 대물렌즈 홀더(40)의 상기 베이스(46) 측 측면 양단에 상기 작동기(43)를 사이에 두고 종방향으로 배열되어 있는 2개의 상기 바이모프(51)와, 상기 2개의 바이모프(51)의 상기 홀더(40) 측 끝단에 좌우로 피벗 회전 가능하도록 각각 형성된 2개의 힌지(45)로 이루어져 있는 것을 특징으로 하는 세라믹 압전 작동기를 이용한 CD-ROM/DVD-ROM 광픽업 장치.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1999-0001578A KR100399038B1 (ko) | 1999-01-20 | 1999-01-20 | 압전 세라믹 작동기를 이용한 cd-rom/dvd-rom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1999-0001578A KR100399038B1 (ko) | 1999-01-20 | 1999-01-20 | 압전 세라믹 작동기를 이용한 cd-rom/dvd-rom |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000051248A KR20000051248A (ko) | 2000-08-16 |
KR100399038B1 true KR100399038B1 (ko) | 2003-09-22 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR10-1999-0001578A KR100399038B1 (ko) | 1999-01-20 | 1999-01-20 | 압전 세라믹 작동기를 이용한 cd-rom/dvd-rom |
Country Status (1)
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KR (1) | KR100399038B1 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100467838B1 (ko) * | 2001-12-26 | 2005-01-24 | 삼성전기주식회사 | 광 픽업 액추에이터 |
KR20110117405A (ko) | 2010-04-21 | 2011-10-27 | 도시바삼성스토리지테크놀러지코리아 주식회사 | 광학적 콜리메이터 조립체 및 이를 적용하는 광 픽업 장치 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07153100A (ja) * | 1993-11-30 | 1995-06-16 | Nikon Corp | トラッキング用アクチュエータ |
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1999
- 1999-01-20 KR KR10-1999-0001578A patent/KR100399038B1/ko not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07153100A (ja) * | 1993-11-30 | 1995-06-16 | Nikon Corp | トラッキング用アクチュエータ |
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KR20000051248A (ko) | 2000-08-16 |
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