KR960038775A - 다층 기록막을 갖는 광디스크용 광픽업 장치 - Google Patents
다층 기록막을 갖는 광디스크용 광픽업 장치 Download PDFInfo
- Publication number
- KR960038775A KR960038775A KR1019950008719A KR19950008719A KR960038775A KR 960038775 A KR960038775 A KR 960038775A KR 1019950008719 A KR1019950008719 A KR 1019950008719A KR 19950008719 A KR19950008719 A KR 19950008719A KR 960038775 A KR960038775 A KR 960038775A
- Authority
- KR
- South Korea
- Prior art keywords
- optical
- objective lens
- pickup apparatus
- recording film
- spot
- Prior art date
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
- G11B7/12—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
- G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
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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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
-
- 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
- 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
- G11B7/09—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
- G11B7/0945—Methods for initialising servos, start-up sequences
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
다층 기록막을 갖는 광디스크용 광픽업 장치가 개시되어 있다.
본 장치는 광디스크(50)를 향하여 광을 발생하고 그 광디스크(50)에서 반사하는 광을 수광하는 고정광학계(30)와, 이 고정광학계(30)에서 출사된 광을 수렴하여 광디스크(50)에 스폿을 형성하기 위한 대물렌즈(39)와, 이 대물렌즈(39)의 초점위치오차를 보상하도록 그 대물렌즈(39)를 구동하는 액츄에이터와, 광디스크(50)의 선택된 어느 한 기록막으로 대물렌즈(39)에 의한 스폿을 이동시키는 스폿이동수단을 구비하는 것을 특징으로 한다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명의 일 실시예에 따른 다층 기록막을 갖는 광디스크용 광픽업 장치의 광학적 구성을 보인 배치도, 제3도는 본 발명의 다른 실시예에 따른 다층 기록막을 갖는 광디스크용 광픽업 장치의 광학적 구성을 보인 배치도.
Claims (3)
- 다층 기록막을 갖는 광디스크용 광픽업 장치에 있어서, 상기 광디스크를 향하여 광을 발생하고 그 광디스크에서 반사하는 광을 수광하는 고정광학계와, 이 고정광학계에서 출사된 광을 수렴하여 상기 광디스크에 스폿을 형성하기 위한 대물렌즈와, 이 대물렌즈의 초점위치오차를 보상하도록 그 대물렌즈를 구동하는 액츄에어터와, 상기 광디스크의 선택된 어느 한 기록막으로 상기 대물렌즈에 의한 수폿을 이동시키는 스폿이동수단을 구비하는 것을 특징으로 하는 다층 기록막을 갖는 광디스크용 광픽업 장치.
- 제1항에 있어서, 상기 스폿이동수단은 광축방향으로 움직이도록 양의 굴절력을 가지는 렌즈유니트와, 이 렌즈유니트의 외주를 감싸도록 설치된 코일부와, 이 코일부에 마주하는 외주에 고정 형성된 자석부로 이루어진 것을 특징으로 하는 다층 기록막을 갖는 광디스크용 광픽업 장치.
- 제1항에 있어서, 상기 대물렌즈를 통하여 상기 광디스크에 조사 투과된 광량 분포를 검출하여 광 스폿이 형성되는 광디스크의 기록막을 감지하는 센싱수단이 상기 광디스크의 후면에 더 구비된 것을 특징으로 하는 다층 기록막을 갖는 광디스크용 광픽업 장치.※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950008719A KR0147628B1 (ko) | 1995-04-13 | 1995-04-13 | 다층 기록막을 갖는 광디스크용 광픽업 장치 |
US08/628,328 US5691971A (en) | 1995-04-13 | 1996-04-05 | Multiple recording layer focusing of a light spot with an addition of zoom lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950008719A KR0147628B1 (ko) | 1995-04-13 | 1995-04-13 | 다층 기록막을 갖는 광디스크용 광픽업 장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960038775A true KR960038775A (ko) | 1996-11-21 |
KR0147628B1 KR0147628B1 (ko) | 1998-10-15 |
Family
ID=19412150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950008719A KR0147628B1 (ko) | 1995-04-13 | 1995-04-13 | 다층 기록막을 갖는 광디스크용 광픽업 장치 |
Country Status (2)
Country | Link |
---|---|
US (1) | US5691971A (ko) |
KR (1) | KR0147628B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100373536B1 (ko) * | 1999-09-22 | 2003-02-25 | 엘지전자 주식회사 | 휴대형 광디스크 장치와 이에 적합한 광디스크 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5966362A (en) * | 1995-11-02 | 1999-10-12 | Konica Corporation | Optical system for recording and reproducing for use in optical information recording medium |
JPH09251662A (ja) * | 1996-03-15 | 1997-09-22 | Sony Corp | 記録媒体記録再生装置および記録媒体記録再生方法 |
JPH10188301A (ja) * | 1996-12-20 | 1998-07-21 | Sony Corp | 光ディスク記録再生装置および方法 |
JPH11110794A (ja) * | 1997-09-30 | 1999-04-23 | Sony Corp | レンズ駆動装置及び光学ヘッド |
DE69937102T2 (de) * | 1998-12-10 | 2008-06-05 | Koninklijke Philips Electronics N.V. | Vorrichtung zur optischen abtastung eines aufzeichnungsträgers |
US6111828A (en) * | 1999-01-12 | 2000-08-29 | Siros Technologies, Inc. | Focus error signal generation using confocally filtered detection |
US6269057B1 (en) | 1999-01-12 | 2001-07-31 | Siros Technologies, Inc. | Focus error signal generation using a birefringent lens with confocal detection |
US6322933B1 (en) | 1999-01-12 | 2001-11-27 | Siros Technologies, Inc. | Volumetric track definition for data storage media used to record data by selective alteration of a format hologram |
US6256271B1 (en) | 1999-01-12 | 2001-07-03 | Siros Technologies, Inc. | Focus error signal generation using two polarizers in confocal configuration |
US6288986B1 (en) | 1999-01-12 | 2001-09-11 | Siros Technologies, Inc. | Focus error signal generation using a birefringent plate with confocal detection |
US6512606B1 (en) | 1999-07-29 | 2003-01-28 | Siros Technologies, Inc. | Optical storage media and method for optical data storage via local changes in reflectivity of a format grating |
US6322931B1 (en) | 1999-07-29 | 2001-11-27 | Siros Technologies, Inc. | Method and apparatus for optical data storage using non-linear heating by excited state absorption for the alteration of pre-formatted holographic gratings |
US6310850B1 (en) | 1999-07-29 | 2001-10-30 | Siros Technologies, Inc. | Method and apparatus for optical data storage and/or retrieval by selective alteration of a holographic storage medium |
JP2001176121A (ja) | 1999-12-17 | 2001-06-29 | Olympus Optical Co Ltd | 情報記録再生装置の光学素子支持装置 |
JP2002092926A (ja) * | 2000-09-14 | 2002-03-29 | Sony Corp | 光ヘッドおよび光ピックアップ |
WO2005066945A1 (en) * | 2004-01-12 | 2005-07-21 | Mempile Inc. | Lens actuator assembly for optical head |
KR20090030859A (ko) * | 2007-09-21 | 2009-03-25 | 엘지전자 주식회사 | 렌즈 유닛과 광학 시스템, 기록 재생 장치 및 기록 재생방법 |
CN105511047B (zh) * | 2015-12-29 | 2019-09-20 | 上海比路电子股份有限公司 | 一种光学变焦马达 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4376303A (en) * | 1980-12-19 | 1983-03-08 | Rca Corporation | Quasi-zoom lens optical focus sensor |
JPS61160714A (ja) * | 1985-01-09 | 1986-07-21 | Canon Inc | 焦点距離可変レンズ |
JP3266627B2 (ja) * | 1991-10-11 | 2002-03-18 | 株式会社日立製作所 | 情報再生装置 |
US5251198A (en) * | 1992-05-29 | 1993-10-05 | Strickler James H | Reading device for multi-layered optical information carrier |
US5499231A (en) * | 1994-11-15 | 1996-03-12 | International Business Machines Corporation | Optical disk drive with multiple data layer disk and system for focusing the optical beam |
KR100200837B1 (ko) * | 1995-01-24 | 1999-06-15 | 윤종용 | 다층 기록막을 갖는 광디스크를 위한 광픽업 |
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1995
- 1995-04-13 KR KR1019950008719A patent/KR0147628B1/ko not_active IP Right Cessation
-
1996
- 1996-04-05 US US08/628,328 patent/US5691971A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100373536B1 (ko) * | 1999-09-22 | 2003-02-25 | 엘지전자 주식회사 | 휴대형 광디스크 장치와 이에 적합한 광디스크 |
Also Published As
Publication number | Publication date |
---|---|
US5691971A (en) | 1997-11-25 |
KR0147628B1 (ko) | 1998-10-15 |
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