KR970011407B1 - 박형광디스크에 기록재생가능한 광디스크기록재생장치 - Google Patents
박형광디스크에 기록재생가능한 광디스크기록재생장치 Download PDFInfo
- Publication number
- KR970011407B1 KR970011407B1 KR1019910006383A KR910006383A KR970011407B1 KR 970011407 B1 KR970011407 B1 KR 970011407B1 KR 1019910006383 A KR1019910006383 A KR 1019910006383A KR 910006383 A KR910006383 A KR 910006383A KR 970011407 B1 KR970011407 B1 KR 970011407B1
- Authority
- KR
- South Korea
- Prior art keywords
- optical
- recording
- optical disc
- optical disk
- thickness
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 title claims description 144
- 239000000758 substrate Substances 0.000 claims description 49
- 230000004075 alteration Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 206010010071 Coma Diseases 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- 239000012782 phase change material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—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
- G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive 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
- G11B7/12—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
- G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
- G11B7/13925—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means
-
- 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
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
-
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00454—Recording involving phase-change effects
-
- 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
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
Claims (2)
- 레이저광원(9)과, 상기 레이저광원의 출사광을 집광하는 집광수단(10)과, 광디스크(2)와, 상기 광디스크를 장착하는 모터(4)와, 집광된 굉빔(16)을 광디스크(2)의 기록재생면(8)에 포커스하는 조리개렌즈(18)와, 상기 광디스크기록재생면으로 부터의 반사광을 분리하는 반사광분리수단(11,12)과, 분리된 반사광을 수광하는 광검출수단(14)과, 상기 광디스크의 기재두께의 따른 광로정을 지닌 적어도 1개의 평행평판(19)과, 상기 평행평판을 상기 조리개렌즈와 상기 광디스크와의 사이에 광축과 직각으로 출입시키고 교환수단(20)을 구비하고, 상기 광디스크는, 기재두께 1.2mm인 제1광디스크와 기재두께 0.6mm인 제2광디스크이며, 상기 조리개렌즈는 상기 제1광디스크에 수차를 최소로 설계하고, 상기 평행평판은 상기 제1, 제2광디스크의 기재두께의 차 0.6mm와 동등한 광로정을 가지며, 상기 교환수단은 상기 제2광디스크가 상기 모터에 장착된 때, 상기 평행평판을 상기 조리개렌즈의 출사부위에 장착해서, 기재 두께의 차를 보정을 행하도록 한 것을 특징으로 하는 광헤드.
- 레이저광원(9)과, 상기 레이저광원의 출사광을 집광하는 집광수단(10)과, 광디스크(2)와, 상기 광디스크를 장착하는 모터(4)와, 집광된 광빔(16)을 광디스크(2)의 기록재생면(8)에 포커스하는 조리개렌즈(18)와, 상기 광디스크기록재생면으로 부터의 반사광을 분리하는 반사광분리수단(11,12)과, 분리된 반사광을 수광하는 광검출수단(14)과, 광디스크의 기재두께에 다른 광로정을 가진 적어도 1매의 평행평판(19)과, 상기 평행평판을 상기 조리개렌즈와 상기 광디스크와의 사이에 광축과 직각으로 출입시키고 교환수단(20)을 구비하고, 상기 광디스크는, 기재두께 1.2mm인 제1광디스크와 기재두께 0.6mm인 제2광디스크이며, 상기 조리개렌즈는 상기 제1광디스크에 수차를 최소를 설계하고, 상기 평행평판은 상기 제1, 제2광디스크의 기재두께의 차 0.6mm와 동등한 광로정을 가지며, 상기 교환수단은 상기 제2광디스크가 상기 모터에 장착된 때, 상기 평행평판을 상기 조리개렌즈의 출사부위에 장착해서, 기재두께의 차를 보정하여, 제1, 제2광디스크에 신호의 기록재생을 행하도록 한 것을 특징으로 하는 광디스크기록재생장치.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950026513A KR100232048B1 (ko) | 1990-04-20 | 1995-08-25 | 박형디스크기재를 가진 광디스크 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10615790 | 1990-04-20 | ||
JP2-106157 | 1990-04-20 | ||
JP2-328715 | 1990-11-27 | ||
JP32871590 | 1990-11-27 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950026513A Division KR100232048B1 (ko) | 1990-04-20 | 1995-08-25 | 박형디스크기재를 가진 광디스크 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR910018990A KR910018990A (ko) | 1991-11-30 |
KR970011407B1 true KR970011407B1 (ko) | 1997-07-10 |
Family
ID=26446323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910006383A Expired - Lifetime KR970011407B1 (ko) | 1990-04-20 | 1991-04-20 | 박형광디스크에 기록재생가능한 광디스크기록재생장치 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5148421A (ko) |
EP (4) | EP0862166B1 (ko) |
KR (1) | KR970011407B1 (ko) |
DE (3) | DE69132425T2 (ko) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5235581A (en) * | 1990-08-09 | 1993-08-10 | Matsushita Electric Industrial Co., Ltd. | Optical recording/reproducing apparatus for optical disks with various disk substrate thicknesses |
EP0569597B1 (en) * | 1991-11-20 | 1998-07-15 | Sony Corporation | Optical disk apparatus |
JP2807589B2 (ja) * | 1992-02-13 | 1998-10-08 | シャープ株式会社 | 光源ユニット及び該光源ユニットを使用した光学ヘッド |
JPH0636517A (ja) * | 1992-07-16 | 1994-02-10 | Matsushita Electric Ind Co Ltd | 光情報記録再生装置 |
JP2532818B2 (ja) | 1993-02-01 | 1996-09-11 | 松下電器産業株式会社 | 対物レンズおよび光ヘッド装置 |
US5815293A (en) | 1993-02-01 | 1998-09-29 | Matsushita Electric Industrial Co., Ltd. | Compound objective lens having two focal points |
CN1707312A (zh) * | 1993-08-04 | 2005-12-14 | 松下电器产业株式会社 | 物镜单元、光学装置及光学信息系统 |
US5729510A (en) * | 1994-01-19 | 1998-03-17 | Kabushiki Kaisha Toshiba | Optical head used for recording on optical recording medium having various thicknesses, warpage and the like |
JP3240846B2 (ja) * | 1994-08-12 | 2001-12-25 | 松下電器産業株式会社 | 光ヘッド |
JP3519804B2 (ja) * | 1994-11-10 | 2004-04-19 | オリンパス株式会社 | 光ピックアップ装置 |
EP1150281B1 (en) * | 1995-02-02 | 2004-05-12 | Pioneer Electronic Corporation | Optical pickup apparatus and identification apparatus for identifying the type of optical record medium |
US5625609A (en) * | 1995-03-13 | 1997-04-29 | International Business Machines Corporation | Multiple data layer optical disk drive system with fixed aberration correction and optimum interlayer spacing |
US5742441A (en) * | 1995-04-07 | 1998-04-21 | Discovision Associates | Method and apparatus for aligning an objective lens |
US5708633A (en) * | 1995-06-07 | 1998-01-13 | Discovision Associates | Method and apparatus for manufacturing information storage devices |
EP0836738B1 (en) * | 1995-07-05 | 2008-08-27 | Yenploy Pty. Ltd. | Optical storage system |
JPH09115178A (ja) * | 1995-10-17 | 1997-05-02 | Toshiba Corp | 光ヘッド装置およびその製造方法 |
DE19611904A1 (de) * | 1996-03-26 | 1997-10-02 | Thomson Brandt Gmbh | Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger |
US6016301A (en) * | 1996-04-01 | 2000-01-18 | Sony Corporation | Optical pickup device and optical disc reproducing apparatus |
JPH10106019A (ja) * | 1996-09-24 | 1998-04-24 | Nec Corp | 2波長分離型光ヘッド |
JPH10172243A (ja) * | 1996-12-11 | 1998-06-26 | Sony Corp | 円盤状記録媒体および円盤状記録媒体再生装置 |
KR100554068B1 (ko) * | 1998-02-12 | 2006-02-22 | 삼성전자주식회사 | 니어필드형 광학적 저장매체 및 이를 위한 광학적 데이터저장시스템 |
JP2000030257A (ja) * | 1998-07-08 | 2000-01-28 | Taiyo Yuden Co Ltd | 光情報媒体とその記録方法 |
US6839306B1 (en) * | 2000-07-28 | 2005-01-04 | Terastar Corporation | Optical near-field second surface recording |
WO2004008446A2 (en) * | 2002-07-11 | 2004-01-22 | Glud & Marstrand A/S | A compensated optical storage medium |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130243A (en) * | 1981-02-05 | 1982-08-12 | Toshiba Corp | Information storage medium |
JPS59198537A (ja) * | 1983-04-22 | 1984-11-10 | Matsushita Electric Ind Co Ltd | 光学的記録再生装置 |
US4561086A (en) * | 1983-05-12 | 1985-12-24 | Eastman Kodak Company | Optical write/read unit with selective-transparency cover |
JPS60243834A (ja) * | 1984-05-18 | 1985-12-03 | Matsushita Electric Ind Co Ltd | 光学ヘツド |
DE3533647C2 (de) * | 1984-09-20 | 1994-09-01 | Pioneer Electronic Corp | Optisches Informationsaufzeichnungs- und Wiedergabegerät |
GB2168166B (en) * | 1984-10-25 | 1989-06-01 | Olympus Optical Co | Graded refractive index lens system |
US4712207A (en) * | 1985-03-18 | 1987-12-08 | Rca Corporation | Apparatus for erasing information on a reversible optical recording medium |
JPS6266433A (ja) * | 1985-09-19 | 1987-03-25 | Mitsubishi Electric Corp | 光学式ヘツド装置 |
JPH071560B2 (ja) * | 1985-09-20 | 1995-01-11 | オリンパス光学工業株式会社 | 光学式記録再生装置 |
US4892606A (en) * | 1986-08-28 | 1990-01-09 | Canon Kabushiki Kaisha | Optical recording medium having space therein and method of manufacturing the same |
JPS6396745A (ja) * | 1986-10-13 | 1988-04-27 | Matsushita Electric Ind Co Ltd | 光学ヘツド |
EP0288570B1 (en) * | 1986-10-29 | 1995-06-14 | Dai Nippon Insatsu Kabushiki Kaisha | Draw type optical recording medium |
EP0345273B1 (en) * | 1987-02-13 | 1996-02-28 | The Dow Chemical Company | Optical recording medium |
US4959824A (en) * | 1987-07-31 | 1990-09-25 | Minolta Camera Kabushiki Kaisha | Optical information record/pickup head assembly |
JP2655923B2 (ja) * | 1990-01-22 | 1997-09-24 | シャープ株式会社 | 光ヘッド装置 |
JPH03225650A (ja) * | 1990-01-31 | 1991-10-04 | Sony Corp | 光ディスクシステム |
-
1991
- 1991-04-16 US US07/685,409 patent/US5148421A/en not_active Ceased
- 1991-04-19 EP EP98104596A patent/EP0862166B1/en not_active Expired - Lifetime
- 1991-04-19 DE DE69132425T patent/DE69132425T2/de not_active Expired - Lifetime
- 1991-04-19 DE DE69132426T patent/DE69132426T2/de not_active Expired - Lifetime
- 1991-04-19 EP EP19910106332 patent/EP0452953A3/en not_active Withdrawn
- 1991-04-19 EP EP98104595A patent/EP0862165B1/en not_active Expired - Lifetime
- 1991-04-19 EP EP98104594A patent/EP0855702B1/en not_active Expired - Lifetime
- 1991-04-19 DE DE69132579T patent/DE69132579T2/de not_active Expired - Lifetime
- 1991-04-20 KR KR1019910006383A patent/KR970011407B1/ko not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5148421A (en) | 1992-09-15 |
DE69132579D1 (de) | 2001-05-10 |
DE69132425D1 (de) | 2000-10-26 |
EP0452953A3 (en) | 1992-11-25 |
EP0855702A3 (en) | 1998-09-02 |
DE69132579T2 (de) | 2001-06-28 |
EP0452953A2 (en) | 1991-10-23 |
DE69132425T2 (de) | 2001-03-08 |
EP0855702A2 (en) | 1998-07-29 |
EP0862165B1 (en) | 2000-09-20 |
EP0855702B1 (en) | 2000-09-20 |
EP0862166A1 (en) | 1998-09-02 |
DE69132426D1 (de) | 2000-10-26 |
KR910018990A (ko) | 1991-11-30 |
EP0862166B1 (en) | 2000-09-20 |
EP0862165A1 (en) | 1998-09-02 |
DE69132426T2 (de) | 2001-03-08 |
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