KR910008670A - 광학정보기록재생용 광헤드 - Google Patents

광학정보기록재생용 광헤드 Download PDF

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Publication number
KR910008670A
KR910008670A KR1019900017393A KR900017393A KR910008670A KR 910008670 A KR910008670 A KR 910008670A KR 1019900017393 A KR1019900017393 A KR 1019900017393A KR 900017393 A KR900017393 A KR 900017393A KR 910008670 A KR910008670 A KR 910008670A
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KR
South Korea
Prior art keywords
light
receiving diode
light receiving
optical
order diffracted
Prior art date
Application number
KR1019900017393A
Other languages
English (en)
Other versions
KR940000419B1 (ko
Inventor
가즈오 노다
에이이찌 나까무라
Original Assignee
오까다 미노루
닛폰 콘럭스 캄파니 리미티드
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 오까다 미노루, 닛폰 콘럭스 캄파니 리미티드 filed Critical 오까다 미노루
Publication of KR910008670A publication Critical patent/KR910008670A/ko
Application granted granted Critical
Publication of KR940000419B1 publication Critical patent/KR940000419B1/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
    • 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
    • G11B7/08—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
    • G11B7/13—Optical detectors therefor
    • 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
    • G11B7/1362—Mirrors
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

내용 없음.

Description

광학정보기록재생용 광헤드
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 광헤드의 광학계구성을 나타낸 도면.
제2도, 제3도, 제6도 및 제7도는 3개의 소자로 이루어진 수광다이오드와 이 수광다이오드에 의해 수신된 광점의 일례를 나타낸 도면.

Claims (4)

  1. 광정보기록매체상에 0차 회절광, +1차 회절광, -1차 회절광으로 이루어진 3광비임을 조사하는 투광계와, 상기 기록매체로부터 반사된 3광비임을 수신하는 수광계로 구성되고, 상기 수광계는 에지미러를 구비하여 상기 기록매체로부터 반사된 3광 비임중 0차 회절광의 약 1/2과 _1차 회절광의 전부가 상기 에지멀의 영향없이 제1수광다이오드에 의해 수취되고, 상기 0차 회절광의 나머지 약 1/2과 상기 -1차 회절광의 전부가 상기 에지머러에 의해 반사되어 제2수광다이오드에 의해 수취되며, 포커싱제어신호, 트랙킹제어신호 및 정보신호가 상기 제1수광다이오드 또는 상기 제2수광다이오드의 출력으로부터 얻어지거나 상기 제1수광다이오드와 상기 제2수광다이오드로부터의 조합출력으로 얻어지는 것을 특징으로 하는 광학정보기록재생용 광헤드.
  2. 제1항에 있어서, 상기 포커싱제어신호와 상기 정보신호는 상기 0차 회절광으로부터 얻어지고, 상기 트랙킹제어신호는 상기 +1차 회절광과 상기 -1차 회절광으로부터 얻어지는 것을 특징으로 하는 광학정보기록재생용 광헤드.
  3. 제1항에 있어서, 상기 제1수광다이오드와 상기 제2수광다이오드는 각각 3개의 소자 또는 4개의 소자로 구성되어 상기 소자사이의 분할선이 상기 에지미러의 에지에 평행하게 되는 것을 특징으로 하는 광학정보기록재새용 광헤드.
  4. 제1항에 있어서, 상기 제1수광다이오드 또는 상기 제2수광다이오드로부터의 출력 또는 이들의 조합출력이 서어보증폭기에 의해 증폭되어 포커싱제어 및 트랙킹제어에 사용되는 것을 특징으로 하는 광학정보기록재생용 광헤드.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900017393A 1989-10-30 1990-10-30 광학정보기록재생용 광헤드 KR940000419B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1-282167 1989-10-30
JP89-282167 1989-10-30
JP1282167A JP2710675B2 (ja) 1989-10-30 1989-10-30 光学情報記録再生用光ヘッド

Publications (2)

Publication Number Publication Date
KR910008670A true KR910008670A (ko) 1991-05-31
KR940000419B1 KR940000419B1 (ko) 1994-01-20

Family

ID=17648973

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900017393A KR940000419B1 (ko) 1989-10-30 1990-10-30 광학정보기록재생용 광헤드

Country Status (8)

Country Link
US (1) US5084851A (ko)
EP (1) EP0426053B1 (ko)
JP (1) JP2710675B2 (ko)
KR (1) KR940000419B1 (ko)
AU (1) AU640176B2 (ko)
CA (1) CA2028562C (ko)
DE (1) DE69022951T2 (ko)
ES (1) ES2080776T3 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100761980B1 (ko) * 2006-07-20 2007-09-28 황현식 발열매트의 온도 조절기 회로
KR20160001962A (ko) 2014-06-30 2016-01-07 길종진 프리볼트 온도조절 장치 및 방법

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JPH03157843A (ja) * 1989-11-16 1991-07-05 Sony Corp 光学ピックアップ装置
JP2711010B2 (ja) * 1990-04-04 1998-02-10 株式会社日本コンラックス 光学ヘッド
US5278397A (en) * 1991-07-25 1994-01-11 Symbol Technologies, Inc. Multi-resolution bar code reader
JP3246608B2 (ja) * 1991-11-18 2002-01-15 パイオニア株式会社 光学式情報再生装置
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
JP2726584B2 (ja) * 1991-11-25 1998-03-11 三菱電機株式会社 対物レンズ駆動装置
JPH05242512A (ja) * 1991-12-19 1993-09-21 Matsushita Electric Ind Co Ltd 光ディスク装置
JPH05205294A (ja) * 1992-01-28 1993-08-13 Olympus Optical Co Ltd 光学的情報記録再生装置
JPH05307848A (ja) * 1992-05-01 1993-11-19 Ricoh Co Ltd 閉ループ制御システムおよび光ディスク装置のサーボ装置
JP2897532B2 (ja) * 1992-06-02 1999-05-31 日本電気株式会社 相変化型光ディスクの再生方法
JP2825718B2 (ja) * 1992-12-02 1998-11-18 シャープ株式会社 光学式記録再生装置
AU661796B2 (en) * 1993-10-18 1995-08-03 Nec Corporation Phase-change type optical disk device and optical head to be used therein
KR950015241A (ko) * 1993-11-16 1995-06-16 배순훈 광픽업의 포커스에러 검출방법 및 그 장치
JP3533836B2 (ja) * 1996-08-08 2004-05-31 ミツミ電機株式会社 光ディスクドライブのミラー信号演算回路
JP3402997B2 (ja) * 1997-03-12 2003-05-06 株式会社リコー 光ピックアップ装置
JP2001307348A (ja) 2000-04-20 2001-11-02 Seiko Instruments Inc 近視野光ヘッド
US7450477B2 (en) * 2004-11-22 2008-11-11 Samsung Electronics Co., Ltd. Optical pickup having a polarization beam splitter

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Publication number Priority date Publication date Assignee Title
JPS57108811A (en) * 1980-12-26 1982-07-07 Hitachi Ltd Optical focus position detector
US4504938A (en) * 1981-04-07 1985-03-12 Victor Company Of Japan, Limited Device for feedback controlling focus of an optical system in an information recording/reproducing apparatus
US4621353A (en) * 1982-09-09 1986-11-04 Burroughs Corporation Optical memory system providing improved focusing control and improved beam combining and separating apparatus
JPS601632A (ja) * 1983-06-18 1985-01-07 Mitsubishi Electric Corp 光学式情報記録再生装置
JPS60167139A (ja) * 1984-02-10 1985-08-30 Hitachi Ltd 光学的情報記録再生装置の光学ヘツド
US4724533A (en) * 1984-06-15 1988-02-09 Matsushita Electric Industrial Co., Ltd. Optical head
JPS6142738A (ja) * 1984-08-06 1986-03-01 Hikari Yokoekawa 光学式記録再生システム
KR900003686B1 (ko) * 1985-11-27 1990-05-30 마쯔시다덴기산교 가부시기가이샤 광학기록 재생장치
JPH0827965B2 (ja) * 1986-08-29 1996-03-21 株式会社日立製作所 光学式再生装置
US4873678A (en) * 1986-12-10 1989-10-10 Hitachi, Ltd. Optical head and optical information processor using the same
US4907847A (en) * 1987-09-28 1990-03-13 Nec Home Electronics Ltd. Optical pickup and hologram therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100761980B1 (ko) * 2006-07-20 2007-09-28 황현식 발열매트의 온도 조절기 회로
KR20160001962A (ko) 2014-06-30 2016-01-07 길종진 프리볼트 온도조절 장치 및 방법

Also Published As

Publication number Publication date
ES2080776T3 (es) 1996-02-16
US5084851A (en) 1992-01-28
EP0426053B1 (en) 1995-10-11
CA2028562C (en) 1995-07-18
KR940000419B1 (ko) 1994-01-20
AU640176B2 (en) 1993-08-19
EP0426053A2 (en) 1991-05-08
DE69022951T2 (de) 1996-03-14
JP2710675B2 (ja) 1998-02-10
JPH03142720A (ja) 1991-06-18
DE69022951D1 (de) 1995-11-16
CA2028562A1 (en) 1991-05-01
AU6555490A (en) 1991-05-02
EP0426053A3 (en) 1991-12-18

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