KR970705136A - 부분 반사 박막층을 갖는 이중층 광학 매체(dual layer optical medium having partially reflecting thin film layer) - Google Patents

부분 반사 박막층을 갖는 이중층 광학 매체(dual layer optical medium having partially reflecting thin film layer) Download PDF

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KR970705136A
KR970705136A KR1019970700735A KR19970700735A KR970705136A KR 970705136 A KR970705136 A KR 970705136A KR 1019970700735 A KR1019970700735 A KR 1019970700735A KR 19970700735 A KR19970700735 A KR 19970700735A KR 970705136 A KR970705136 A KR 970705136A
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layer
reflective layer
medium
data
laser beam
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KR1019970700735A
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비. 힌츠 마이클
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원본미기재
미네소타 마이닝 앤드 매뉴팩츄어링 컴패니
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Publication of KR970705136A publication Critical patent/KR970705136A/ko

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    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24062—Reflective layers
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G11B7/2548—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of inorganic materials
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G11B7/2585—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on aluminium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/146—Laser beam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/21—Circular sheet or circular blank

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  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

본 발명은 투명한 기재(14), 부분 반사층(16), 투명한 공간층(18) 및 고도로 반사하는 층(20)을 포함하는 이중층 예비-기록된 광학적 디스크(12)에 관한 것이다. 데이타 피트 유형(15)는 상기 부분 반사층에 인접한 기재상에 제공되며, 또 다른 유형의 데이타 피트(19)는 고도로 반사하는 층에 인접한 공간층상에 제공된다. 부분 반사층은 실리콘 카바이드로 만들어질 수 있다. 기재-입사 빔은 레이저가 어느 층에 집중되느냐에 따라 데이타 피트 유형내에 코드화되는 데이타를 판독하는 데 사용할 수 있다. 상기 이중층 디스크의 데이타 저장 용량은 종래의 단일층 디스크의 두배이다.

Description

부분 반사 박막층을 갖는 이중층 광학 매체 (DUAL LAYER OPTICAL MEDIUM HAVING PARTIALLY REFLECTING THIN FILM LAYER).
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 광학적 데이타 저장 시스템을 보여준다.

Claims (10)

  1. 하나의 주 표면내에 피트 유형(15)를 갖는 투명한 기재(14); 상기 피트 유형에 인접하며, 500 내지 850mm 파장 범위에서 측정할때 실성분 n(2.6〈n〈3.2) 및 허성분 K(0.4 이하)을 갖는 굴절률을 갖는 부분 반사층(16); 투명한 중합체 공간층(18); 및 고도로 반사하는 층(20)을 순차적으로 포함하는 광학적 저장 매체(12).
  2. 하나의 주 표면내에 제 1 데이타 피트 유형(15)를 갖는 투명한 기재(14); 상기 제 1 데이타 피트 유형에 인접하며, 실리콘 카바이드를 포함하는 부분 반사층(16); 부분 반사층에 마주한 공간층의 한 사이드상에 존재하는 하나의 주 표면내에, 제 2 데이타 피트 유형(19)를 갖는 투명한 공간층(18); 및 상기 제 2 데이타 피트 유형에 인접하게 제공되는 고도로 반사하는 층(20)을 순차적으로 포함하는 이중층 예비 기록된 광학적 디스크(12).
  3. 제1항 또는 제2항에 있어서, 상기 부분 반사층은 ±10%의 부분 반사층 두께 변화에 걸쳐 ±0.03이하씩 변화하는 내부 표면 반사도를 갖는 매체.
  4. 제1항 또는 제2항에 있어서, 상기 부분 반사층은 약 5 내지 약 15%의 산소 원자를 함유하는 실리콘 카바이드를 포함하는 매체.
  5. 제1항에 있어서, 상기 공간층은 약 5 내지 100㎛범위의 두께를 갖는 매체.
  6. 제1항 또는 제2항에 있어서, 부분 반사층은 30 내지 80nm 두께를 갖는 매체.
  7. 제2항에 있어서, 부분 반사층내의 실리콘 대 탄소 비는 약 1:1.3인 매체.
  8. 제2항에 있어서, 상기 공간층은 광중합체를 포함하며 약 5 내지 100㎛범위의 두께를 갖는 매체.
  9. 하나의 주 표면내에 피트 유형(15)를 갖는 투명한 기재(14); 실리콘 카바이드를 포함하는 부분 반사층(16), 투명한 중합체 공간층(18); 및 고도로 반사하는 층(20)을 순차적으로 포함하는 광학적 저장 매체(12); 상기 기재를 통과하여 매체내로 들어가도록 위치시킨, 촛점을 맞춘 레이저 빔(30); 레이저 빔의 촛점위치를 조정하기 위한 수단(이것에 의해 부분 반사층 또는 고도로 반사하는 층 중 하나위에 상기 빔을 집중시킬 수 있음); 및 상기 매체를 나오는 반사된 레이저 빔을 감지하도록 위치시킨 광감지기(32)를 포함하는 광학적 저장 시스템(10).
  10. 하나의 주 표면내에 제 1 데이타 피트 유형(15)를 갖는 투명한 기재(14); 상기 제 1 데이타 피트 유형에 인접하며, 500 내지 850nm 파장 범위에서 측정할때, 실성분 n(2.6〈n〈3.2) 및 허성분 K(0.4 이하)을 갖는 굴절률을 갖는 부분 반사층(16); 부분 반사층에 마주한 공간층의 한 사이드상에 존재하는 하나의 주 표면내에, 제 2 데이타 피트 유형(19)를 갖는 투명한 공간층(18); 및 상기 제 2 데이타 피트 유형에 인접하게 제공되는 고도로 반사하는 층(20)을 순차적으로 포함하는 이중층 예비 기록된 광학적 디스크(12); 상기 기재를 통과하여 매체내로 들어가도록 위치시킨, 촛점을 맞춘 레이저 빔(30); 레이저 빔의 촛점위치를 조정하기 위한 수단(이것에 의해 부분 반사층 또는 고도로 반사하는 층 중 하나위에 상기 빔을 집중시킬 수 있음); 및 상기 디스크를 나오는 반사된 레이저 빔을 감지하도록 위치시킨 광감지기(32)를 포함하는 예비-기록된 이중층 광학적 디스크 저장 시스템(10).
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970700735A 1994-08-05 1995-06-05 부분 반사 박막층을 갖는 이중층 광학 매체(dual layer optical medium having partially reflecting thin film layer) KR970705136A (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/286,289 US5540966A (en) 1994-08-05 1994-08-05 Dual layer optical medium having partially reflecting thin film layer
US08/286,289 1994-08-05
PCT/US1995/007096 WO1996004650A1 (en) 1994-08-05 1995-06-05 Dual layer optical medium having partially reflecting thin film layer

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KR970705136A true KR970705136A (ko) 1997-09-06

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US (3) US5540966A (ko)
EP (1) EP0775357B1 (ko)
JP (1) JPH10503872A (ko)
KR (1) KR970705136A (ko)
CN (1) CN1134774C (ko)
CA (1) CA2194227A1 (ko)
DE (1) DE69508258T2 (ko)
MX (1) MX9700859A (ko)
WO (1) WO1996004650A1 (ko)

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CA2194227A1 (en) 1996-02-15
US5540966A (en) 1996-07-30
EP0775357B1 (en) 1999-03-10
WO1996004650A1 (en) 1996-02-15
CN1134774C (zh) 2004-01-14
MX9700859A (es) 1997-04-30
DE69508258T2 (de) 1999-09-09
US5679429A (en) 1997-10-21
EP0775357A1 (en) 1997-05-28
CN1155347A (zh) 1997-07-23
US5993930A (en) 1999-11-30
DE69508258D1 (de) 1999-04-15
JPH10503872A (ja) 1998-04-07

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