KR880006659A - 광학픽업장치 - Google Patents

광학픽업장치 Download PDF

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Publication number
KR880006659A
KR880006659A KR870012507A KR870012507A KR880006659A KR 880006659 A KR880006659 A KR 880006659A KR 870012507 A KR870012507 A KR 870012507A KR 870012507 A KR870012507 A KR 870012507A KR 880006659 A KR880006659 A KR 880006659A
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KR
South Korea
Prior art keywords
light beam
prism
incident
optical axis
reflected light
Prior art date
Application number
KR870012507A
Other languages
English (en)
Other versions
KR960000828B1 (ko
Inventor
히로시 요시마츠
Original Assignee
오가 노리오
소니 가부시키 가이샤
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 오가 노리오, 소니 가부시키 가이샤 filed Critical 오가 노리오
Publication of KR880006659A publication Critical patent/KR880006659A/ko
Application granted granted Critical
Publication of KR960000828B1 publication Critical patent/KR960000828B1/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
    • G11B7/12—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
    • 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • 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
    • 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

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

내용 없음

Description

광학픽업장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본원 발명에 관한 광학픽업장치의 일례를 간략화하여 도시한 구성도,
제2도 및 제3도는 제1도에 도시한 예에 사용된 검광자의 설명을 위한 도면.

Claims (1)

  1. 광빔발생원과, 이 광빔발생원으로 부터 광 빔을 기록매체에 집속상태하에 입사시키는 동시에 상기 기록매체로부터의 반사광 빔을 받는 대물렌즈와, 상기 광빔발생원으로부터 상기 대물렌즈에 입사하는 광 빔과 상기 대물렌즈를 통과한 반사광 빔과를 분리하는 빔스플리터와, 각기 수정으로 형성된 제1의 프리즘과 제2의 프리즘이 맞붙여져 구성되어서, 상기 빔스플리터로 부터의 반사광 빔이 상기 제1의 프리즘으로 부터 입사하여 상기 제2의 프리즘에 이르는 위치에 배설되고, 상기 제1의 프리즘에 있어서의 광학측이 입사하는 반사광 빔의 광축(光軸)에 실질적으로 직교하는 면내에 있으며, 또한 상기 입사하는 반사광 빔의 편광면(偏光面)에 대하여 소정의 각도만큼 경사진 것으로 되는 동시에, 상기 제2의 프리즘에 있어서의 광학축이 상기 입사하는 반사광 빔의 광축에 실질적으로 직교하는 면내에 있으며, 또한 상기 제1의 프리즘에 있어서의 광학축과 소정의 각도를 이루는 것으로 되어서, 상기 입사하는 반사광 빔에 의거한 최소한 3줄기의 광 빔을 출사(出射)시키는 검광자(檢光子)와, 이 검광자로부터 출사하는 상기 3줄기의 광 빔을 개별적으로 검출하는 복수의 광검출소자가 내장된 광검출유닛과를 구비하여 이루어진 광학픽업장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019870012507A 1986-11-15 1987-11-06 광학픽업장치 KR960000828B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP86-172416 1986-11-15
JP61272416A JPH0677351B2 (ja) 1986-11-15 1986-11-15 光学ピツクアツプ装置
JP86-272416 1986-11-15

Publications (2)

Publication Number Publication Date
KR880006659A true KR880006659A (ko) 1988-07-23
KR960000828B1 KR960000828B1 (ko) 1996-01-13

Family

ID=17513602

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870012507A KR960000828B1 (ko) 1986-11-15 1987-11-06 광학픽업장치

Country Status (5)

Country Link
US (1) US4771414A (ko)
EP (1) EP0270874B1 (ko)
JP (1) JPH0677351B2 (ko)
KR (1) KR960000828B1 (ko)
DE (1) DE3778323D1 (ko)

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JPH0777038B2 (ja) * 1986-12-25 1995-08-16 ソニー株式会社 光学ピツクアツプ装置
JPH0789415B2 (ja) * 1987-01-29 1995-09-27 日本電気株式会社 光学ヘツド
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US5132950A (en) * 1989-05-02 1992-07-21 Pioneer Electronic Corporation Optical head having a prism for splitting a beam of light into two polarized light beams
JP2902415B2 (ja) * 1989-09-14 1999-06-07 シャープ株式会社 光学ヘッド
JPH03116567A (ja) * 1989-09-29 1991-05-17 Canon Inc 光磁気情報再生装置
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KR950013702B1 (ko) * 1993-07-15 1995-11-13 엘지전자주식회사 광자기 디스크의 광픽업 장치
JP3541893B2 (ja) * 1993-08-06 2004-07-14 ソニー株式会社 光磁気記録媒体再生装置
US5694385A (en) * 1993-09-24 1997-12-02 Ricoh Comany, Ltd. Optical pickup apparatus
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JP3318636B2 (ja) * 1994-03-31 2002-08-26 ソニー株式会社 サーボ装置、光ディスク再生装置
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Also Published As

Publication number Publication date
JPH0677351B2 (ja) 1994-09-28
KR960000828B1 (ko) 1996-01-13
EP0270874A2 (en) 1988-06-15
JPS63127436A (ja) 1988-05-31
EP0270874B1 (en) 1992-04-15
DE3778323D1 (de) 1992-05-21
US4771414A (en) 1988-09-13
EP0270874A3 (en) 1989-02-01

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