KR0134276B1 - 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템 - Google Patents
한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템Info
- Publication number
- KR0134276B1 KR0134276B1 KR1019940027373A KR19940027373A KR0134276B1 KR 0134276 B1 KR0134276 B1 KR 0134276B1 KR 1019940027373 A KR1019940027373 A KR 1019940027373A KR 19940027373 A KR19940027373 A KR 19940027373A KR 0134276 B1 KR0134276 B1 KR 0134276B1
- Authority
- KR
- South Korea
- Prior art keywords
- polarized light
- polarization
- optical
- optical disk
- polarizing
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 63
- 230000010287 polarization Effects 0.000 claims abstract description 43
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 description 15
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
Classifications
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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
- G11B7/08—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
- G11B7/135—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
-
- 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
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
-
- 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Head (AREA)
Abstract
Description
Claims (1)
- 한쪽면에 복수개의 기록층을 가지는 광 디스크를 기록/ 재생하는 광 픽업시스템에 있어서, 상기 광 디스크를 중심으로 서로 대면하도록 직각 방향으로 배열설치되며, 각각 다른 파장의 P편광 또는 S편광 레이저를 발생하는 제1 및 제2 편광 레이저와; 상기 광 디스크와 대향하여, 상기 제1 및 제2 편광 레이저의 광 경로상에 위치되며, 상기 제1 및 제2편광 레이저로부터 주사된 편광을 선택적으로 상기 광 디스크상에 집속시키고, 상기 광 디스크로부터 반사된 빔을 전반사시키는 편광 프리즘과; 상기 편광 프리즘의 일측면에 마련되어, 주사된 편광을 다른 편광으로 변환시키는 변환판과; 상기 편광 프리즘과 상기 광 디스크사이에 위치되며, 상기 제1 및 제2 편광 레이저로부터 주사되어진 편광을 상기 광 디스크에 집속시키는 집속수단과; 상기 편광 프리즘과 상기 제1편광 레이저사이 및 상기 편광 프리즘과 상기 제2 편광 레이저사이에 각각 마련된 콜리메이터 렌즈와; 를 포함하는 것을 특징으로 하는 한쪽면에 복수개의 기록층을 가지는 광 디스크용 광 픽업 시스템.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940027373A KR0134276B1 (ko) | 1994-10-26 | 1994-10-26 | 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템 |
US08/528,645 US5671206A (en) | 1994-10-26 | 1995-09-07 | Optical pickup device |
CN95117639A CN1140301A (zh) | 1994-10-26 | 1995-10-24 | 光拾取装置 |
JP7278958A JPH08212594A (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 |
---|---|---|---|
KR1019940027373A KR0134276B1 (ko) | 1994-10-26 | 1994-10-26 | 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960015444A KR960015444A (ko) | 1996-05-22 |
KR0134276B1 true KR0134276B1 (ko) | 1998-04-20 |
Family
ID=19395889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940027373A KR0134276B1 (ko) | 1994-10-26 | 1994-10-26 | 한쪽면에 복수개의 기록층을 형성한 광 디스크용 광 픽업 시스템 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5671206A (ko) |
JP (1) | JPH08212594A (ko) |
KR (1) | KR0134276B1 (ko) |
CN (1) | CN1140301A (ko) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19643105A1 (de) * | 1996-10-21 | 1998-04-23 | Thomson Brandt Gmbh | Gerät zum Lesen oder Beschreiben eines optischen Aufzeichnungsträgers |
KR100238074B1 (ko) * | 1997-01-20 | 2000-02-01 | 윤종용 | Dvd 및 cd-r에 호환하는 광픽업 |
JP3718941B2 (ja) * | 1997-02-26 | 2005-11-24 | ソニー株式会社 | 光ディスク装置 |
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 |
TWI276852B (en) * | 2005-11-07 | 2007-03-21 | Yi-Jiun Ren | Optical configuration for generating polarization conversion |
WO2007108516A1 (ja) * | 2006-03-22 | 2007-09-27 | Matsushita Electric Industrial Co., Ltd. | レーザ穿孔装置およびレーザ穿孔方法 |
JP2009087413A (ja) * | 2007-09-28 | 2009-04-23 | Hitachi Media Electoronics Co Ltd | 光ディスクドライブ装置、光ピックアップ及びそれに用いられる光学部品 |
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 KR1019940027373A patent/KR0134276B1/ko not_active IP Right Cessation
-
1995
- 1995-09-07 US US08/528,645 patent/US5671206A/en not_active Expired - Fee Related
- 1995-10-24 CN CN95117639A patent/CN1140301A/zh active Pending
- 1995-10-26 JP JP7278958A patent/JPH08212594A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
CN1140301A (zh) | 1997-01-15 |
JPH08212594A (ja) | 1996-08-20 |
US5671206A (en) | 1997-09-23 |
KR960015444A (ko) | 1996-05-22 |
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