KR940024714A - 광픽업 - Google Patents

광픽업 Download PDF

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Publication number
KR940024714A
KR940024714A KR1019930007481A KR930007481A KR940024714A KR 940024714 A KR940024714 A KR 940024714A KR 1019930007481 A KR1019930007481 A KR 1019930007481A KR 930007481 A KR930007481 A KR 930007481A KR 940024714 A KR940024714 A KR 940024714A
Authority
KR
South Korea
Prior art keywords
recording medium
optical
optical recording
reflected light
optical pickup
Prior art date
Application number
KR1019930007481A
Other languages
English (en)
Other versions
KR100230227B1 (ko
Inventor
이철우
정종삼
김응호
Original Assignee
김광호
삼성전자 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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019930007481A priority Critical patent/KR100230227B1/ko
Priority to JP6007534A priority patent/JPH06349104A/ja
Publication of KR940024714A publication Critical patent/KR940024714A/ko
Priority to US08/609,003 priority patent/US5617398A/en
Application granted granted Critical
Publication of KR100230227B1 publication Critical patent/KR100230227B1/ko

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/108—Beam splitting or combining systems for sampling a portion of a beam or combining a small beam in a larger one, e.g. wherein the area ratio or power ratio of the divided beams significantly differs from unity, without spectral selectivity
    • 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
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/12—Beam splitting or combining systems operating by refraction only
    • G02B27/126—The splitting element being a prism or prismatic array, including systems based on total internal reflection
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/144—Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/16—Beam splitting or combining systems used as aids for focusing
    • 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
    • G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
    • 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
    • G11B7/1372—Lenses
    • 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
    • G11B7/1395—Beam splitters or combiners
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G11B11/10541—Heads for reproducing
    • G11B11/10543—Heads for reproducing using optical beam of radiation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Head (AREA)

Abstract

광 또는 광자기 기록매체의 정보를 기록재생하는 광픽업이 개시되어 있다. 개시된 광픽업은 부품의 최적한 배치를 위하여 반사광을 두개의 편광성분을 분할하는 웨라스톤 프리즘과 그 분할되는 반사광을 수광하는 2개의 광검출소자를 구비한다.이와같은 광픽업은 광학부품의 배치에 있어서 불필요한 공간과 소요부품수를 극소화하여 초소형 제작에 매우 유리하다.

Description

광픽업
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명에 의한 광픽업의 광학적 구성을 보인 배치도이다.

Claims (1)

  1. 광기록매체의 정보를 기록재생하는 광픽업에 있어서, 광기록매체를 향해 입사광을 발생하는 광발생소자; 그 입사광을 광기록매체 집속하는 대물렌즈; 상기 광발생소자와 대물렌즈 사이에 배치되어 그 입사광을 직진시키고 광기록매체의 반사광을 P편광성분과 S편광성분으로 분할하는 웰라스톤 프리즘; 상기 웰라스톤 프리즘에 의하여 분할되는 광기록매체로부터의 반사광을 수광하는 적어도 하나의 광검출소자를 구비하여 된 것을 특징으로 하는 광픽업.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930007481A 1993-04-30 1993-04-30 광픽업 KR100230227B1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019930007481A KR100230227B1 (ko) 1993-04-30 1993-04-30 광픽업
JP6007534A JPH06349104A (ja) 1993-04-30 1994-01-27 光ピックアップ
US08/609,003 US5617398A (en) 1993-04-30 1996-02-29 In-line optical pickup using Wollaston Prism and collimating lens directing polarized light components to detectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930007481A KR100230227B1 (ko) 1993-04-30 1993-04-30 광픽업

Publications (2)

Publication Number Publication Date
KR940024714A true KR940024714A (ko) 1994-11-18
KR100230227B1 KR100230227B1 (ko) 1999-11-15

Family

ID=19354789

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930007481A KR100230227B1 (ko) 1993-04-30 1993-04-30 광픽업

Country Status (3)

Country Link
US (1) US5617398A (ko)
JP (1) JPH06349104A (ko)
KR (1) KR100230227B1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100259372B1 (ko) * 1997-06-04 2000-06-15 김영환 광픽업 장치

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6327238B1 (en) * 1997-08-29 2001-12-04 Matsushita Electric Industrial Co., Ltd. Optical disk device
JP2001201615A (ja) * 2000-01-21 2001-07-27 Sony Corp 光学素子および光ピックアップ
US6453324B1 (en) * 2000-03-30 2002-09-17 Unisys Corporation Method for maintaining a version history of objects in a repository
US7218591B2 (en) * 2002-04-17 2007-05-15 Sharp Kabushiki Kaisha Optical pickup apparatus
JP3866691B2 (ja) * 2003-07-01 2007-01-10 シャープ株式会社 光ピックアップ装置およびそれを備えてなる光ディスク装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5724033A (en) * 1980-07-18 1982-02-08 Sharp Corp Pickup device
JP2539350B2 (ja) * 1983-12-16 1996-10-02 株式会社日立製作所 光ヘツド装置
JPS60131648A (ja) * 1983-12-19 1985-07-13 Toshiba Corp 光学ヘツド
EP0222238B2 (en) * 1985-11-11 1998-02-11 Sharp Kabushiki Kaisha Pick-up device
DE3787285T2 (de) * 1987-10-19 1994-03-31 Hitachi Ltd Optischer Aufbau mit einer phasenstarr gekoppelten Laserdiodenzeile.
JPH01151022A (ja) * 1987-12-09 1989-06-13 Sharp Corp 光ピックアップ装置
FR2646245B1 (fr) * 1989-04-25 1991-06-14 Thomson Csf Dispositif de lecture optique pour support d'enregistrement optique
JP2902415B2 (ja) * 1989-09-14 1999-06-07 シャープ株式会社 光学ヘッド
US5202869A (en) * 1990-04-20 1993-04-13 Sharp Kabushiki Kaisha Optical head device including diffraction grating
JPH04170724A (ja) * 1990-11-05 1992-06-18 Nec Gumma Ltd 光学式ピックアップ装置
JP3109877B2 (ja) * 1991-11-18 2000-11-20 パイオニア株式会社 光学式情報再生装置
US5258967A (en) * 1992-02-24 1993-11-02 Eastman Kodak Company Method and apparatus for separating a first optical control radiation from a second optical control radiation in a read/write head for use in an optical storage and retrieval system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100259372B1 (ko) * 1997-06-04 2000-06-15 김영환 광픽업 장치

Also Published As

Publication number Publication date
KR100230227B1 (ko) 1999-11-15
US5617398A (en) 1997-04-01
JPH06349104A (ja) 1994-12-22

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