KR0134462B1 - 한쪽면에 복수개의 기록층을 형성한 광디스크용 광 픽업 시스템 - Google Patents
한쪽면에 복수개의 기록층을 형성한 광디스크용 광 픽업 시스템Info
- Publication number
- KR0134462B1 KR0134462B1 KR1019940027372A KR19940027372A KR0134462B1 KR 0134462 B1 KR0134462 B1 KR 0134462B1 KR 1019940027372 A KR1019940027372 A KR 1019940027372A KR 19940027372 A KR19940027372 A KR 19940027372A KR 0134462 B1 KR0134462 B1 KR 0134462B1
- Authority
- KR
- South Korea
- Prior art keywords
- laser
- optical disk
- laser beam
- optical
- laser diode
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 70
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 239000010410 layer Substances 0.000 description 14
- 230000010287 polarization Effects 0.000 description 10
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method 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
- 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
-
- 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
- G11B7/1356—Double or multiple prisms, i.e. having two or more prisms in cooperation
-
- 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
- G11B7/127—Lasers; Multiple laser arrays
-
- 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
- G11B7/131—Arrangement of detectors in a multiple array
-
- 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
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
- G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete 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
- G11B7/08—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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims (2)
- 한쪽면에 복수개의 기록층을 가지는 광디스크를 기록/ 재생하는 광 픽업 시스템에 있어서, 상기 광디스크를 중심으로 서로 대면하도록 직각 방향으로 배열설치되며, 각각 다른 파장의 레이저 빔을 주사하는 제1 및 제2 레이저 다이오드와; 상기 광디스크와 대향하는 위치에 마련되는 포토 다이오드와; 상기 제1 및 제2 레이저 다이오드의 광 경로상에 위치되며, 상기 제1 및 제2 레이저 다이오드로부터 주사된 레이저 빔을 선택적으로 상기 광디스크상에 집속시키고, 상기 광디스크로부터 반사된 빔을 선택적으로 상기 포토 다이오드에 집속시키는 분광수단과; 상기 분광수단과 상기 광디스크사이에 위치되며, 상기 제1 및 제2 다이오드로부터 주사되어진 레이저 빔을 상기 광디스크에 집속시키는 집속수단;을 포함하며, 상기 분광수단은 각각 인접된 면이 상호 밀착되어 사각형상을 이루되, 제1, 2 삼각 프리즘 및 제1, 3 삼각 프리즘은 상기 제1 레이저 다이오드와 대응되고, 제 2, 4 삼각 프리즘 및 제 3, 4 삼각 프리즘은 상기 제2 레이저 다이오드와 대응되는 제1, 2, 3, 4 삼각 프리즘과;상기 제1, 2 삼각 프리즘사이에 도포되며, 상기 제1 레이저 다이오드로부터 주사된 레이저 빔은 반반사 반투과시키고, 상기 제2 레이저 다이오드로부터 주사된 레이저 빔은 전투과시키는 제1 코팅 반사막과; 상기 제1, 3 삼각 프리즘사이에 도포되며, 상기 제1레이저 다이오드로부터 주사된 레이저 빔은 전투과시키고, 상기 제2레이저 다이오드로부터 주사된 레이저 빔은 전반사시키는 제2코팅 반사막과; 상기 제2, 4 삼각 프리즘사이에 도포되며, 상기 제2레이저 다이오드로부터 주사된 레이저 빔은 반반사 반투과시키고, 상기 제1레이저 다이오드로부터 주사된 레이저 빔은 전투과시키는 제3코팅 반사막과; 상기 제3, 4 삼각 프리즘 사이에 도포되며, 상기 제2 레이저 다이오드로부터 주사된 레이저 빔은 전투과시키고, 상기 제1레이저 다이오드로부터 주사된 레이저 빔은 전반사시키는 제4 코팅 반사막을 포함하는 것을 특징으로 하는 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템.
- 제1항에 있어서, 상기 포토 다이오드가, 2분할 포토 다이오드인 것을 특징으로 하는 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940027372A KR0134462B1 (ko) | 1994-10-26 | 1994-10-26 | 한쪽면에 복수개의 기록층을 형성한 광디스크용 광 픽업 시스템 |
US08/528,644 US5646929A (en) | 1994-10-26 | 1995-09-07 | Optical pickup device |
CN95117641A CN1139263A (zh) | 1994-10-26 | 1995-10-24 | 光拾取装置 |
JP7278956A JPH08212587A (ja) | 1994-10-26 | 1995-10-26 | 光ピックアップ装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940027372A KR0134462B1 (ko) | 1994-10-26 | 1994-10-26 | 한쪽면에 복수개의 기록층을 형성한 광디스크용 광 픽업 시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960015443A KR960015443A (ko) | 1996-05-22 |
KR0134462B1 true KR0134462B1 (ko) | 1998-04-20 |
Family
ID=19395888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940027372A KR0134462B1 (ko) | 1994-10-26 | 1994-10-26 | 한쪽면에 복수개의 기록층을 형성한 광디스크용 광 픽업 시스템 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5646929A (ko) |
JP (1) | JPH08212587A (ko) |
KR (1) | KR0134462B1 (ko) |
CN (1) | CN1139263A (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100734106B1 (ko) * | 1999-12-08 | 2007-06-29 | 엘지전자 주식회사 | 광픽업 장치 |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0745983A3 (en) * | 1995-05-31 | 1998-03-04 | Daewoo Electronics Co., Ltd | Optical pickup |
JPH1055566A (ja) * | 1996-04-26 | 1998-02-24 | Daewoo Electron Co Ltd | 光ピックアップ装置 |
KR100238281B1 (ko) * | 1997-03-14 | 2000-01-15 | 윤종용 | 호환형 광픽업장치 |
US5879827A (en) * | 1997-10-10 | 1999-03-09 | Minnesota Mining And Manufacturing Company | Catalyst for membrane electrode assembly and method of making |
KR19990074812A (ko) * | 1998-03-14 | 1999-10-05 | 윤종용 | 호환형 광픽업장치 |
KR19980071939A (ko) * | 1998-07-04 | 1998-10-26 | 성재갑 | 고순도 에폭시 화합물의 제조 방법 |
KR100348560B1 (ko) * | 1998-07-04 | 2002-09-18 | (주)베이크라이트코리아 | 고순도 바이페닐 에폭시 수지의 제조 방법 |
TW540038B (en) * | 1998-10-13 | 2003-07-01 | Matsushita Electric Ind Co Ltd | Recording/reproducing apparatus for optical information recording medium and optical head |
KR100616527B1 (ko) * | 1999-06-18 | 2006-08-28 | 주식회사 케이씨씨 | 3겹 강관 하도용 열경화성 분체도료 조성물 |
KR100694253B1 (ko) * | 2000-07-11 | 2007-03-14 | 엘지전자 주식회사 | 다층 기록/재생용 광픽업장치 |
TW514899B (en) * | 2000-10-27 | 2002-12-21 | Matsushita Electric Ind Co Ltd | Optical pickup device and optical disk driver |
KR20030000850A (ko) * | 2001-06-27 | 2003-01-06 | 삼성전기주식회사 | 광 픽업용 프리즘 |
JP2003059107A (ja) * | 2001-08-08 | 2003-02-28 | Nec Corp | 多層記録層を有する光ディスク、光ディスク製造方法、光ディスク装置ならびに光ディスク記録再生方法 |
US20040156302A1 (en) * | 2003-01-07 | 2004-08-12 | Matsushita Electric Industrial Co., Ltd. | Optical head |
US20050105450A1 (en) * | 2003-11-19 | 2005-05-19 | Cookson Christopher J. | Optical disc player having a read head with dual laser beam sources |
US7234787B2 (en) * | 2004-01-08 | 2007-06-26 | Eastman Kodak Company | Liquid level detection method and apparatus |
EP1754398A4 (en) * | 2004-05-15 | 2010-03-24 | Stablcor Inc | LADDER PLATE WITH GUIDING SUPPORTING KERN WITH RESIN-FILLED CHANNELS |
CN100383885C (zh) * | 2004-06-07 | 2008-04-23 | 清华大学 | 数字通用光盘的光学头驱动单元性能评价调整方法 |
US20110138481A1 (en) * | 2008-06-17 | 2011-06-09 | Lg Electronics Inc. | Recording medium, and recording/reproducing method and recording/reproducing apparatus for recording medium |
JP4577450B2 (ja) * | 2009-11-12 | 2010-11-10 | エプソントヨコム株式会社 | 光学デバイス及び光ピックアップ |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936338A (ja) * | 1982-08-24 | 1984-02-28 | Matsushita Electric Ind Co Ltd | 光デイスク記録再生方法 |
NL9002841A (nl) * | 1990-12-21 | 1992-07-16 | Philips Nv | Werkwijze en inrichting voor het langs optische weg inschrijven, uitlezen, en wissen van een meervlaks registratiedrager, en registratiedrager geschikt voor deze werkwijze en inrichting. |
-
1994
- 1994-10-26 KR KR1019940027372A patent/KR0134462B1/ko not_active IP Right Cessation
-
1995
- 1995-09-07 US US08/528,644 patent/US5646929A/en not_active Expired - Fee Related
- 1995-10-24 CN CN95117641A patent/CN1139263A/zh active Pending
- 1995-10-26 JP JP7278956A patent/JPH08212587A/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100734106B1 (ko) * | 1999-12-08 | 2007-06-29 | 엘지전자 주식회사 | 광픽업 장치 |
Also Published As
Publication number | Publication date |
---|---|
US5646929A (en) | 1997-07-08 |
KR960015443A (ko) | 1996-05-22 |
CN1139263A (zh) | 1997-01-01 |
JPH08212587A (ja) | 1996-08-20 |
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