KR960025413A - 다층 디스크용 광 픽업 - Google Patents

다층 디스크용 광 픽업 Download PDF

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Publication number
KR960025413A
KR960025413A KR1019940037245A KR19940037245A KR960025413A KR 960025413 A KR960025413 A KR 960025413A KR 1019940037245 A KR1019940037245 A KR 1019940037245A KR 19940037245 A KR19940037245 A KR 19940037245A KR 960025413 A KR960025413 A KR 960025413A
Authority
KR
South Korea
Prior art keywords
laser diode
laser
triangular prism
beam scanned
optical disk
Prior art date
Application number
KR1019940037245A
Other languages
English (en)
Other versions
KR100213282B1 (ko
Inventor
이광석
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940037245A priority Critical patent/KR100213282B1/ko
Priority to JP7350440A priority patent/JPH08241531A/ja
Priority to US08/578,303 priority patent/US5627814A/en
Priority to CN95120500A priority patent/CN1132899A/zh
Publication of KR960025413A publication Critical patent/KR960025413A/ko
Application granted granted Critical
Publication of KR100213282B1 publication Critical patent/KR100213282B1/ko

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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
    • 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
    • G11B7/0908—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 for focusing only
    • 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
    • G11B7/0908—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 for focusing only
    • G11B7/0916—Foucault or knife-edge methods
    • 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
    • G11B7/1359—Single prisms
    • 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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • 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
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers

Abstract

본 발명은 다층 디스크용 광 픽업을 개시한다.
본 발명은, 광 디스크를 중심으로 하여 직각 방향으로 배열 설치되며, 다른 파장의 레이저 빔을 주사하는 제1, 2레이저 다이오드와; 제1, 2레이저 다이오드에 대하여 나이프 에지를 이루도록 그 단부가 광축선상에 위치된 삼각 프리즘과; 제1레이저 다이오드와 대면하는 삼각 프리즘의 일측면상에 도포되며, 제1레이저 다이오드로 부터 주사된 빔은 전반사 시키고 제2레이저 다이오드로 부터 주사된 빔은 전투과 시키는 제1코팅층과; 제2레이저 다이오드와 대면하는 삼각 프리즘의 일측면상에 도포되며, 제2레이저 다이오드로 부터 주사된 빔은 전반사 시키고 제1레이저 다이오드로 부터 주사된 빔은 전투과시키는 제2코팅층과; 삼각 프리즘의 하부에 위치되며, 제1, 2레이저 다이오드에 의해 주사되고 광 디스크에 의해 반사되어진 빔으로 부터 신호를 검출하는 2분할 포토 다이오드를 포함하여 된 것으로서, 소정파장의 레이저 빔을 주사하는 제1, 2레이저와 이를 선택적으로 광 디스크 및 포토 다이오드에 집속하는 나이프 에지를 이루는 삼각 프리즘을 통해 한쪽면에 복수의 기록층을 가지는 광 디스크에 기록/재생을 용이하게 행할 수 있다.

Description

다층 디스크용 광 픽업
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 본 발명에 따른 다층 디스크용 광 픽업을 개념적으로 도시한 개념도.

Claims (1)

  1. 광 디스크를 중심으로 하여 서로 직각 방향으로 배열 설치되며, 각각 다른 파장의 레이저 빔을 주사하는 제1, 2레이저 다이오드와; 상기 제1, 2레이저 다이오드에 대하여 나이프 에지를 이루도록 그 단부가 광축선상에 위치된 삼각 프리즘과; 상기 제1레이저 다이오드와 대면하는 삼각 프리즘의 일측면상에 도포되며, 제1레이저 다이오드로 부터 주사된 빔은 전반사 시키고 제2레이저 다이오드로 부터 주사된 빔은 전투과 시키는 제1코팅층과; 상기 제2레이저 다이오드와 대면하는 삼각 프리즘의 일측면상에 도포되며, 제2레이저 다이오드로 부터 주사된 빔은 전반사 시키고 제1레이저 다이오드로 부터 주사된 빔은 전투과 시키는 제2코팅층과; 상기 삼각 프리즘의 하부에 위치되며, 제1, 2레이저 다이오드에 의해 주사되고 광 디스크에 의해 반사되어진 빔으로 부터 신호를 검출하는 2분할 포토 다이오드를 포함하여 된 것을 특징으로 하는 다층 디스크용 광 픽업.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940037245A 1994-12-27 1994-12-27 다층 디스크용 광 픽업 KR100213282B1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019940037245A KR100213282B1 (ko) 1994-12-27 1994-12-27 다층 디스크용 광 픽업
JP7350440A JPH08241531A (ja) 1994-12-27 1995-12-22 光ピックアップシステム
US08/578,303 US5627814A (en) 1994-12-27 1995-12-26 Optical pickup system for reading information recorded on an optical disk having multiple recording surfaces
CN95120500A CN1132899A (zh) 1994-12-27 1995-12-27 用于读取记录在光盘上的信息的光学读取系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940037245A KR100213282B1 (ko) 1994-12-27 1994-12-27 다층 디스크용 광 픽업

Publications (2)

Publication Number Publication Date
KR960025413A true KR960025413A (ko) 1996-07-20
KR100213282B1 KR100213282B1 (ko) 1999-08-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940037245A KR100213282B1 (ko) 1994-12-27 1994-12-27 다층 디스크용 광 픽업

Country Status (4)

Country Link
US (1) US5627814A (ko)
JP (1) JPH08241531A (ko)
KR (1) KR100213282B1 (ko)
CN (1) CN1132899A (ko)

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KR100253810B1 (ko) * 1997-07-10 2000-04-15 구자홍 이파장 광원모듈 및 그를 이용한 광픽업장치
KR100293464B1 (ko) * 1998-04-07 2001-07-12 구자홍 이파장광원모듈및그의제조방법과그를이용한광픽업장치

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US5726969A (en) * 1994-12-28 1998-03-10 Matsushita Electric Industrial Co., Ltd. Optical recording medium having dual information surfaces
JP2995003B2 (ja) * 1995-05-08 1999-12-27 三洋電機株式会社 光学式再生装置
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US6160787A (en) * 1996-01-11 2000-12-12 Wea Manufacturing, Inc. Multiple layer optical recording medium for use with two different wavelength laser beams
US6016301A (en) * 1996-04-01 2000-01-18 Sony Corporation Optical pickup device and optical disc reproducing apparatus
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JP3112841B2 (ja) * 1996-08-27 2000-11-27 日本電気株式会社 光ピックアップ装置
US6266314B1 (en) * 1996-10-01 2001-07-24 Matsushita Electric Industrial Co., Ltd. Optical pickup device
US6556533B1 (en) 1996-10-01 2003-04-29 Matsushita Electric Industrial Co., Ltd. Optical pickup device
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JPH10308031A (ja) * 1997-05-06 1998-11-17 Sankyo Seiki Mfg Co Ltd 光ピックアップ装置
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US6288986B1 (en) 1999-01-12 2001-09-11 Siros Technologies, Inc. Focus error signal generation using a birefringent plate with confocal detection
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US6111828A (en) * 1999-01-12 2000-08-29 Siros Technologies, Inc. Focus error signal generation using confocally filtered detection
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US6269057B1 (en) 1999-01-12 2001-07-31 Siros Technologies, Inc. Focus error signal generation using a birefringent lens with confocal detection
KR100585065B1 (ko) * 1999-07-20 2006-06-01 삼성전자주식회사 광출력모듈 및 이를 채용한 호환형 광픽업장치
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
TWI225243B (en) * 2000-10-13 2004-12-11 Matsushita Electric Ind Co Ltd Optical head and apparatus for and method of storing and reproducing optical information
CN108896557B (zh) * 2018-06-27 2021-06-11 上海工程技术大学 一种镜片正边沿倒角爆边瑕疵的检测装置及方法

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US5161243A (en) * 1986-01-21 1992-11-03 Matsushita Electric Industrial Co., Ltd. Tracking system for an optical recording/reproducing apparatus having a plurality of light spots
US5341355A (en) * 1988-05-20 1994-08-23 Ricoh Company, Ltd. Multibeam optical pickup and servo method thereof
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US5295125A (en) * 1992-02-03 1994-03-15 Hitachi, Ltd. Optical head device for recording/reproduction for recording medium using plural light spots
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100253810B1 (ko) * 1997-07-10 2000-04-15 구자홍 이파장 광원모듈 및 그를 이용한 광픽업장치
KR100293464B1 (ko) * 1998-04-07 2001-07-12 구자홍 이파장광원모듈및그의제조방법과그를이용한광픽업장치

Also Published As

Publication number Publication date
CN1132899A (zh) 1996-10-09
US5627814A (en) 1997-05-06
KR100213282B1 (ko) 1999-08-02
JPH08241531A (ja) 1996-09-17

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