KR960032338A - 속응답 광변조장치 - Google Patents

속응답 광변조장치 Download PDF

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Publication number
KR960032338A
KR960032338A KR1019950003761A KR19950003761A KR960032338A KR 960032338 A KR960032338 A KR 960032338A KR 1019950003761 A KR1019950003761 A KR 1019950003761A KR 19950003761 A KR19950003761 A KR 19950003761A KR 960032338 A KR960032338 A KR 960032338A
Authority
KR
South Korea
Prior art keywords
optical modulator
lenses
light source
optical
light modulator
Prior art date
Application number
KR1019950003761A
Other languages
English (en)
Other versions
KR100200840B1 (ko
Inventor
유장훈
성평용
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 KR1019950003761A priority Critical patent/KR100200840B1/ko
Priority to US08/508,250 priority patent/US6243216B1/en
Priority to JP7196562A priority patent/JP3033676B2/ja
Priority to FR9509370A priority patent/FR2731085B1/fr
Publication of KR960032338A publication Critical patent/KR960032338A/ko
Application granted granted Critical
Publication of KR100200840B1 publication Critical patent/KR100200840B1/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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/128—Modulators
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/0102—Constructional details, not otherwise provided for in this subclass
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0305—Constructional arrangements
    • G02F1/0311—Structural association of optical elements, e.g. lenses, polarizers, phase plates, with the crystal
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/11—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Head (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

기록재생용 광픽업에 있어서의 고밀도 기록을 위한 속응답 광변조장치가 개시되어 있다. 그 장치는 광원(1)과 광변조기(4) 및 이들 사이의 2매의 렌즈(2,3)를 포함하며, 그 렌즈(2,3) 사이의 거리가 각각의 초점거리의 합보다 짧게 구성된다. 이러한 조건으로 최적화된 장치는 그 광원(1)에서 광변조기(4)까지의 전체의 길이를 변경시키지 않고 렌즈(2,3)의 위치만을 변화시켜 광변조(4) 중심에서의 광스폿 크기를 조절하는 것이 가능하다. 따라서 고밀도 기록을 위한 광변조에 있어서 원하는 사양에 맞춰 응답성을 빠르게 하고 높은 광효율을 위한 최적확가 가능한 것이다.<제3도>

Description

속응답 광변조장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 본 발명의 실시예에 따른 광변조장치의 광학적 구성을 보인 배치도.

Claims (2)

  1. 광원과 광변조기를 포함하며, 이 광원과 광변조기 사이에 차례로 배치되어 광원에서 발생되는 광을 광변조기의 중심에 집속하는 2매의 렌즈를 구비하는 광변조장치에 있어서, 상기 2매의 렌즈 사이의 거리가 그 2매의 렌즈 각각의 초점거리의 합보다 짧게 구성된 것을 특징으로 하는 속응답 광변조장치.
  2. 제1항에 있어서, 상기 광원에서 광변조기까지의 길이가 고정되고 상기 2매의 렌즈를 선택적으로 이동시킬 수 있게 된 것을 특징으로 하는 속응답 광변조장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950003761A 1995-02-25 1995-02-25 속응답 광변조장치 KR100200840B1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019950003761A KR100200840B1 (ko) 1995-02-25 1995-02-25 속응답 광변조장치
US08/508,250 US6243216B1 (en) 1995-02-25 1995-07-27 Fast responding optical modulator
JP7196562A JP3033676B2 (ja) 1995-02-25 1995-08-01 光変調装置
FR9509370A FR2731085B1 (fr) 1995-02-25 1995-08-01 Modulateur optique a reponse rapide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950003761A KR100200840B1 (ko) 1995-02-25 1995-02-25 속응답 광변조장치

Publications (2)

Publication Number Publication Date
KR960032338A true KR960032338A (ko) 1996-09-17
KR100200840B1 KR100200840B1 (ko) 1999-06-15

Family

ID=19408799

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950003761A KR100200840B1 (ko) 1995-02-25 1995-02-25 속응답 광변조장치

Country Status (4)

Country Link
US (1) US6243216B1 (ko)
JP (1) JP3033676B2 (ko)
KR (1) KR100200840B1 (ko)
FR (1) FR2731085B1 (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020176147A1 (en) * 2001-05-25 2002-11-28 Romanovsky Alexander B. High speed electro-optic modulator
JP3873770B2 (ja) * 2002-02-19 2007-01-24 ソニー株式会社 光学式ヘッド装置、および、光学式記録・再生装置
JP2008021890A (ja) * 2006-07-14 2008-01-31 Semiconductor Energy Lab Co Ltd レーザー光照射装置およびレーザー光照射方法
US11606539B1 (en) * 2017-12-21 2023-03-14 Apple Inc. Imaging system

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4813070B1 (ko) * 1967-04-20 1973-04-25
HU175630B (hu) * 1976-12-15 1980-09-28 Mta Szamitastech Autom Kutato Lazernoe ustrojstvo dlja registracii dannykh i signalov
JPS60229007A (ja) 1984-04-27 1985-11-14 Matsushita Electric Ind Co Ltd 非等方的光スポツト形成方法
US4752922A (en) * 1984-07-06 1988-06-21 Storage Technology Partners 11 Optical disk recording and readout system having read, write and coarse light beams
US4952035A (en) * 1985-03-22 1990-08-28 Canon Kabushiki Kaisha Optical element and device using same
JPS62183418A (ja) * 1986-02-07 1987-08-11 Fujitsu Ltd 光デイスク用光学系
US5025446A (en) * 1988-04-01 1991-06-18 Laserscope Intra-cavity beam relay for optical harmonic generation
JP2801257B2 (ja) * 1989-04-07 1998-09-21 シチズン時計株式会社 光ビーム走査装置
US5130996A (en) * 1990-11-30 1992-07-14 Hoya Corporation Solid-state laser device capable of generating a harmonic laser beam at a high conversion efficiency
US5377212A (en) * 1991-10-17 1994-12-27 Hitachi, Ltd. Solid-state laser device including uniaxial laser crystal emitting linearly polarized fundamental wave and nonlinear optical crystal emitting linearly polarized harmonic wave
JPH05205269A (ja) * 1992-01-28 1993-08-13 Olympus Optical Co Ltd データ記録方法
JP3297505B2 (ja) * 1992-08-07 2002-07-02 松下電器産業株式会社 光ヘッド装置及び光情報装置
JPH06258573A (ja) * 1993-03-05 1994-09-16 Konica Corp 光情報媒体の記録再生用光学系

Also Published As

Publication number Publication date
FR2731085B1 (fr) 1997-12-26
US6243216B1 (en) 2001-06-05
KR100200840B1 (ko) 1999-06-15
JPH08249703A (ja) 1996-09-27
JP3033676B2 (ja) 2000-04-17
FR2731085A1 (fr) 1996-08-30

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