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KR960015444A - 광 픽업 - Google Patents

광 픽업 Download PDF

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Publication number
KR960015444A
KR960015444A KR1019940027373A KR19940027373A KR960015444A KR 960015444 A KR960015444 A KR 960015444A KR 1019940027373 A KR1019940027373 A KR 1019940027373A KR 19940027373 A KR19940027373 A KR 19940027373A KR 960015444 A KR960015444 A KR 960015444A
Authority
KR
South Korea
Prior art keywords
polarized light
optical disk
optical
polarizing prism
scanned
Prior art date
Application number
KR1019940027373A
Other languages
English (en)
Other versions
KR0134276B1 (ko
Inventor
최양오
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 KR1019940027373A priority Critical patent/KR0134276B1/ko
Priority to US08/528,645 priority patent/US5671206A/en
Priority to CN95117639A priority patent/CN1140301A/zh
Priority to JP7278958A priority patent/JPH08212594A/ja
Publication of KR960015444A publication Critical patent/KR960015444A/ko
Application granted granted Critical
Publication of KR0134276B1 publication Critical patent/KR0134276B1/ko

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
    • G11B7/08—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
    • G11B7/12—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
    • G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • 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
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
    • 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
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)

Abstract

본 발명은 광 픽업을 개시한다.
본 발명은, 광 디스크를 중심으로 하여 각각 P편광 또는 S편광을 발생시키며 서로 대면하도록 직각 방향으로 배열 설치된 제1,2편광레이저; 제1,2편광레이저의 광경로상에 위치되며, 제l,2편광레이저로부터 주사된 편광을 전반사 시키는 편광 프리즘; 광 디스크와 대향되는 편광 프리즘의 일측면에 마련되어 주사되어진 편광을 다른 편광으로 변환시키는 변환판; 편광 프리즘과 광 디스크 사이에 위치되며 제1,2편광 레이저로부터 주사되어진 편광을 광 디스크에 집속시키는 집속수단을 포함하여 된 것으로서, P, S편광을 발생시키는 편광 레이저와 변환판 그리고 편광 프리즘을 통해 한쪽면에 복수의 기록층을 가지는 광 디스크에 기록/재생을 용이하게 행할 수 있으며, 특히 광 손실이 거의 발생되지 않음으로써 광효율의 향상을 동시에 꾀할수 있는 이점이 있다.

Description

광 픽업
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 본 발명에 따른 광 픽업의 개략도.

Claims (2)

  1. 광 디스크를 중심으로 하여 각각 P편광 또는 S편광을 발생시키며 서로 대면하도록 직각 방향으로 배열 설치된 제1,2편광 레이저; 상기 제1,2편광 레이저의 광 경로상에 위치되며, 제1,2편광 레이저로부터 주사된 편광을 전반사 시키는 편광 프리즘; 상기 광 디스크와 대향되는 편광 프리즘의 일측면에 마련되어 주사되어진 편광을 다른 편광으로 변환시키는 변환판; 상기 편광 프리즘과 광 디스크 사이에 위치되며 제1,2편광레이저로 주사되어진 편광을 광 디스크에 집속시키는 집속수단을 포함하여 된 것을 특징으로 하는 광 픽업.
  2. 제1항에 있어서, 상기 편광 프리즘과 제1,2편광 레이저 사이에 콜리베이터렌즈를 더 마련하여 된 것을 특징으로 하는 광 픽업.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940027373A 1994-10-26 1994-10-26 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템 KR0134276B1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019940027373A KR0134276B1 (ko) 1994-10-26 1994-10-26 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템
US08/528,645 US5671206A (en) 1994-10-26 1995-09-07 Optical pickup device
CN95117639A CN1140301A (zh) 1994-10-26 1995-10-24 光拾取装置
JP7278958A JPH08212594A (ja) 1994-10-26 1995-10-26 光ピックアップ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940027373A KR0134276B1 (ko) 1994-10-26 1994-10-26 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템

Publications (2)

Publication Number Publication Date
KR960015444A true KR960015444A (ko) 1996-05-22
KR0134276B1 KR0134276B1 (ko) 1998-04-20

Family

ID=19395889

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940027373A KR0134276B1 (ko) 1994-10-26 1994-10-26 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템

Country Status (4)

Country Link
US (1) US5671206A (ko)
JP (1) JPH08212594A (ko)
KR (1) KR0134276B1 (ko)
CN (1) CN1140301A (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100595412B1 (ko) * 1996-10-21 2006-09-22 도이체 톰손-브란트 게엠베하 광기록매체로부터판독또는이에기록하기위한장치

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100238074B1 (ko) * 1997-01-20 2000-02-01 윤종용 Dvd 및 cd-r에 호환하는 광픽업
JP3718941B2 (ja) * 1997-02-26 2005-11-24 ソニー株式会社 光ディスク装置
JP2003059107A (ja) * 2001-08-08 2003-02-28 Nec Corp 多層記録層を有する光ディスク、光ディスク製造方法、光ディスク装置ならびに光ディスク記録再生方法
US20040156302A1 (en) * 2003-01-07 2004-08-12 Matsushita Electric Industrial Co., Ltd. Optical head
TWI276852B (en) * 2005-11-07 2007-03-21 Yi-Jiun Ren Optical configuration for generating polarization conversion
CA2646716A1 (en) * 2006-03-22 2007-09-27 Matsushita Electric Industrial Co. Ltd. Laser perforation device and laser perforation method
JP2009087413A (ja) * 2007-09-28 2009-04-23 Hitachi Media Electoronics Co Ltd 光ディスクドライブ装置、光ピックアップ及びそれに用いられる光学部品

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5936338A (ja) * 1982-08-24 1984-02-28 Matsushita Electric Ind Co Ltd 光デイスク記録再生方法
NL9002841A (nl) * 1990-12-21 1992-07-16 Philips Nv Werkwijze en inrichting voor het langs optische weg inschrijven, uitlezen, en wissen van een meervlaks registratiedrager, en registratiedrager geschikt voor deze werkwijze en inrichting.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100595412B1 (ko) * 1996-10-21 2006-09-22 도이체 톰손-브란트 게엠베하 광기록매체로부터판독또는이에기록하기위한장치

Also Published As

Publication number Publication date
US5671206A (en) 1997-09-23
JPH08212594A (ja) 1996-08-20
CN1140301A (zh) 1997-01-15
KR0134276B1 (ko) 1998-04-20

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