KR960032348A - 광학소자 - Google Patents

광학소자 Download PDF

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Publication number
KR960032348A
KR960032348A KR1019960004246A KR19960004246A KR960032348A KR 960032348 A KR960032348 A KR 960032348A KR 1019960004246 A KR1019960004246 A KR 1019960004246A KR 19960004246 A KR19960004246 A KR 19960004246A KR 960032348 A KR960032348 A KR 960032348A
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KR
South Korea
Prior art keywords
light
polarizer
optical
emitting portion
difference
Prior art date
Application number
KR1019960004246A
Other languages
English (en)
Inventor
오사무 마쓰다
Original Assignee
이데이 노부유키
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 이데이 노부유키, 소니 가부시기가이샤 filed Critical 이데이 노부유키
Publication of KR960032348A publication Critical patent/KR960032348A/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
    • 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • 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
    • G11B7/133—Shape of individual detector elements
    • 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
    • G11B7/0901—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 track following only
    • 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
    • G11B7/0912—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 by push-pull method

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

Abstract

광학픽업 등에 적용하는 광학소자의 구조의 간단화, 소형화를 도모한다.
발광부와 복수의 수광부와 홀로그램소자와 편광자(偏光子)를 가지는 광학계에 있어서, 발광부로부터 출사(出射)하여, 피조사부(被照射部)에서 반사된 귀환광을, 홀로그램 소자를 통과하여 회절분리하고, 분리된 회절광을 편광자에서 편광분리하고, 편광자를 투과한 한쪽의 편광성분을 복수의 수광부중, 제1의 수광부에서 검출하고, 편광자에서 반사한 다른 쪽의 편광성분을 제2의 수광부에서 검출하고, 제1과 제2의 수광부에서의 광강도의 차분(差分)에 의하여 광자기신호를 검출하도록 구성한다.

Description

광학 소자
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 관한 광학소자의 일예를 나타낸 평면도
제2도는 본 발명에 관한 광학소자의 일예를 나타낸 단면도
제3도는 본 발명에 관한 광학소자에 있어서의 광결합소자만을 나타낸 평면도
제4도는 본 발명의 동작설명을 위한 설명도
제5도 A,B,C는 본 발명에 관한 광학소자의 제조공정도
제7도는 광결합소자의 원리적 설명을 위한 광학장치의 구성도
제8도는 광결합소자의 설명도
제11도 D,E,F는 광결합소자의 대표적 제조공정도

Claims (3)

  1. 발광부와 복수의 수광부와 홀로그램소자와 편광자(偏光子)를 가지는 광학계에 있어서, 상기 발광부로부터 출사(出射)하여, 피조사부(被照射部)에서 반사된 귀환광을, 상기 홀로그램 소자를 통과하여 회절분리되고, 분리된 회절광을 상기 편광자에서 편광분리하고, 상기 편광자를 투과한 한쪽의 편광성분을 상기 복수의 수광부중, 제1의 수광부에서 검출하고, 상기 편광자에서 반사한 다른 쪽의 편광성분을 제2의 수광부에서 검출하고, 상기 제1과 제2의 수광부에서의 광강도의 차분(差分)에 의하여 광자기신호를 검출하는 것을 특징으로하는 광학소자.
  2. 제1항에 있어서, 상기 편광자는 와이어그리드인 것을 특징으로하는 광학소자.
  3. 제1항 또는 제2항에 있어서, 상기 발광부는 수평공진기형 레이저와, 이 수평공진기형 레이저의 한쪽의 공진기끝면에 면한 반사부에 의하여 이루어지는 것을 특징으로하는 광학소자.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960004246A 1995-02-24 1996-02-23 광학소자 KR960032348A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7037183A JPH08235663A (ja) 1995-02-24 1995-02-24 光学素子
JP95-37183 1995-02-24

Publications (1)

Publication Number Publication Date
KR960032348A true KR960032348A (ko) 1996-09-17

Family

ID=12490480

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960004246A KR960032348A (ko) 1995-02-24 1996-02-23 광학소자

Country Status (4)

Country Link
US (1) US5703861A (ko)
EP (1) EP0729143A2 (ko)
JP (1) JPH08235663A (ko)
KR (1) KR960032348A (ko)

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US20080136955A1 (en) * 1996-09-27 2008-06-12 Tessera North America. Integrated camera and associated methods
US8153957B2 (en) * 1996-09-27 2012-04-10 Digitaloptics Corporation East Integrated optical imaging systems including an interior space between opposing substrates and associated methods
US6188062B1 (en) * 1998-04-08 2001-02-13 Hoetron, Inc. Laser/detector hybrid with integrated mirror and diffracted returned beam
US20040041081A1 (en) 2002-08-30 2004-03-04 Feldman Michael R. Integrated optical transceiver and related methods
US20070181781A1 (en) 2001-03-06 2007-08-09 Digital Optics Corporation Integrated optical transceiver
JP3791584B2 (ja) * 1999-12-28 2006-06-28 セイコーエプソン株式会社 面発光型半導体レーザおよび面発光型半導体レーザアレイ
US7842914B2 (en) 2000-03-06 2010-11-30 Tessera North America, Inc. Optoelectronic package, camera including the same and related methods
AU2001247286A1 (en) * 2000-03-06 2001-09-17 Digital Optics Corporation Integrated optical transceiver and related methods
US7085050B2 (en) * 2001-12-13 2006-08-01 Sharp Laboratories Of America, Inc. Polarized light beam splitter assembly including embedded wire grid polarizer
US6961291B2 (en) * 2002-04-03 2005-11-01 Plasmon Lms, Inc. System for enhanced astigmatic focus signal detection
JP2003303975A (ja) * 2002-04-08 2003-10-24 Opnext Japan Inc モニタ用フォトダイオード付光モジュール。
US20050023490A1 (en) * 2003-07-29 2005-02-03 Imation Corp. Edge sensing of data storage media
US20070110361A1 (en) * 2003-08-26 2007-05-17 Digital Optics Corporation Wafer level integration of multiple optical elements
JP2005235276A (ja) * 2004-02-18 2005-09-02 Tdk Corp 光ヘッド、光再生装置及び光記録再生装置
JP4093213B2 (ja) 2004-07-29 2008-06-04 松下電器産業株式会社 半導体レーザ装置およびそれを用いた光ピックアップ装置
JP4095623B2 (ja) * 2005-04-05 2008-06-04 株式会社日立製作所 磁気光融合記録装置用ヘッド及びその製造方法
JP4842763B2 (ja) * 2006-10-23 2011-12-21 株式会社リコー 光学素子および光学装置
CN102142468A (zh) * 2010-12-17 2011-08-03 西南技术物理研究所 带光子陷阱的光电探测芯片
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Also Published As

Publication number Publication date
EP0729143A2 (en) 1996-08-28
EP0729143A3 (ko) 1996-09-04
US5703861A (en) 1997-12-30
JPH08235663A (ja) 1996-09-13

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