KR950034131A - 광학장치 - Google Patents

광학장치 Download PDF

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Publication number
KR950034131A
KR950034131A KR1019950004554A KR19950004554A KR950034131A KR 950034131 A KR950034131 A KR 950034131A KR 1019950004554 A KR1019950004554 A KR 1019950004554A KR 19950004554 A KR19950004554 A KR 19950004554A KR 950034131 A KR950034131 A KR 950034131A
Authority
KR
South Korea
Prior art keywords
light
optical
magneto
light receiving
feedback
Prior art date
Application number
KR1019950004554A
Other languages
English (en)
Inventor
겐지 사하라
히로노부 나루이
마사또 도이
오사무 마쓰다
Original Assignee
오가 노리오
소니 가부시기가이샤
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 가부시기가이샤 filed Critical 오가 노리오
Publication of KR950034131A publication Critical patent/KR950034131A/ko

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Classifications

    • 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
    • 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
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
  • Light Receiving Elements (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

광자기신호를 검출하는 광학장치의 구성의 간결화, 소형화를 도모한다.
광자기신호를 검출하는 광학장치에 있어서, 발광부와 수광부가 공통의 기판상에 근접 배치되고, 발광부로부터의 출사광의 광자기매체(36)로부터의 귀환광을 수광부에 의해 공초점(共焦点) 근방에서 수광검출하는 광학소자(1)와, 다른 수광소자(32)를 구비하고, 광자기매체(36)로부터의 귀환광을 분할하여, 한쪽의 귀환광을 광학소자(1)의 수광부(32)에서 수광하고, 다른쪽의 귀환광을 다른 수광소자(32)에서 수광검출하도록 구성한다.

Description

광학장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 관한 광학장치의 일예를 나타낸 구성도, 제2도는 본 발명에 관한 광학장치의 다른 예를 나타낸 구성도, 제3도는 본 발명에 관한 광학장치의 다른 예를 나타낸 구성도, 제4도는 본 발명에 사용하는 광학소자의 설명을 위한 구성도.

Claims (3)

  1. 광자기신호를 검출하는 광학장치에 있어서, 발광부와 수광부가 공통의 기판상에 근접 배치되고, 상기 발광부로부터의 출사광의 광자기매체로부터의 귀환광을 상기 수광부에 의해 공초점(共焦点) 근방에서 수광검출 하는 광학소자와, 다른 수광소자를 구비하고, 광자기매체로부터의 귀환광을 분할하여, 한쪽의 귀환광을 상기 광학소자의 수광부에서 수광검출하고, 다른쪽의 귀환광을 상기 다른 수광소자에서 수광검출하는 것을 특징으로 하는 광학장치.
  2. 제1항에 있어서, 상기 다른 수광소자를 사용한 차동(差動)구조에 의해 상기 다른 쪽의 귀환광을 수광하여 광자기신호를 차동검출하는 것을 특징으로 하는 광학장치.
  3. 제1항에 있어서, 좌선광판(左旋光板)과 우선광판으로 이루어지는 편광수단을 배설하고, 상기 출사광을 상기 한쪽의 선광판을 통과시켜서 광자기매체에 조사(照射)하고, 이 광자기매체로부터의 귀환광을 상기 다른 쪽의 선광판을 통과시켜서, 2분할된 각각의 귀환광을 상기 광학소자의 수광부와 상기 다른 수광소자에 수광하고, 상기 광학소자의 수광부와 상기 다른 수광소자를 사용한 차동구조에 의해 광자기신호를 차동 검출하는 특징으로 하는 광학장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950004554A 1994-03-08 1995-03-07 광학장치 KR950034131A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1994-37255 1994-03-08
JP03725594A JP3541416B2 (ja) 1994-03-08 1994-03-08 光学装置

Publications (1)

Publication Number Publication Date
KR950034131A true KR950034131A (ko) 1995-12-26

Family

ID=12492545

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950004554A KR950034131A (ko) 1994-03-08 1995-03-07 광학장치

Country Status (7)

Country Link
US (2) US5568463A (ko)
EP (1) EP0671734B1 (ko)
JP (1) JP3541416B2 (ko)
KR (1) KR950034131A (ko)
CN (1) CN1073259C (ko)
DE (1) DE69520901T2 (ko)
MY (1) MY113350A (ko)

Families Citing this family (15)

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JP3541416B2 (ja) * 1994-03-08 2004-07-14 ソニー株式会社 光学装置
JPH0894938A (ja) * 1994-09-21 1996-04-12 Sony Corp 共焦点顕微鏡並びに光記録再生装置
JPH08235663A (ja) * 1995-02-24 1996-09-13 Sony Corp 光学素子
JP3882210B2 (ja) * 1995-09-13 2007-02-14 ソニー株式会社 光学装置
FR2739965B1 (fr) * 1995-10-17 1997-11-07 Thomson Csf Dispositif emetteur-recepteur de lumiere et systeme de lecture optique
JPH09128772A (ja) * 1995-11-01 1997-05-16 Sony Corp 光学ピックアップ
US5859814A (en) * 1996-10-18 1999-01-12 The Board Of Trustees Of The Leland Stanford Junior University Magneto-optic recording system and method
US6121603A (en) * 1997-12-01 2000-09-19 Hang; Zhijiang Optical confocal device having a common light directing means
US6614825B1 (en) 1999-10-05 2003-09-02 Zhijiang Hang Monolithic VCSEL-based optical pickup and servo control device
JP3659089B2 (ja) * 1999-10-25 2005-06-15 株式会社日立製作所 光ヘッド及びそれを用いた光学的情報媒体記録再生装置
KR100421269B1 (ko) 2000-03-15 2004-03-09 가부시끼가이샤 도시바 광 헤드 장치용 기판 유닛과 그 제조 방법
US7569860B2 (en) * 2004-01-20 2009-08-04 Binoptics Corporation Integrated photonic devices
JP6044239B2 (ja) * 2012-10-01 2016-12-14 セイコーエプソン株式会社 撮像装置および医療機器
EP3470872B1 (en) * 2017-10-11 2021-09-08 Melexis Technologies NV Sensor device
CN110095426B (zh) * 2019-04-12 2022-01-07 华中科技大学鄂州工业技术研究院 一种基于红外发射和探测集成芯片的红外气体传感器

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US4918675A (en) * 1986-12-04 1990-04-17 Pencom International Corporation Magneto-optical head with separate optical paths for error and data detection
JPH0770065B2 (ja) * 1988-04-20 1995-07-31 シャープ株式会社 光ピックアップ装置
US5161148A (en) * 1988-08-05 1992-11-03 Matsushita Electric Industrial Co., Ltd. Optical pick-up using wavelength guide with grating coupler therein
JPH0724112B2 (ja) * 1988-12-19 1995-03-15 ローム株式会社 レーザダイオードユニットの取り付け方法
US5119352A (en) * 1990-08-17 1992-06-02 Hewlett-Packard Company Magneto optic data storage read out apparatus and method
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Also Published As

Publication number Publication date
EP0671734B1 (en) 2001-05-16
MY113350A (en) 2002-01-31
US5708645A (en) 1998-01-13
JP3541416B2 (ja) 2004-07-14
CN1073259C (zh) 2001-10-17
JPH07244881A (ja) 1995-09-19
DE69520901D1 (de) 2001-06-21
DE69520901T2 (de) 2001-11-29
CN1115388A (zh) 1996-01-24
EP0671734A1 (en) 1995-09-13
US5568463A (en) 1996-10-22

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