JP4396523B2 - 光記録媒体からの読出し及び/又は光記録媒体への書込みのための装置 - Google Patents
光記録媒体からの読出し及び/又は光記録媒体への書込みのための装置 Download PDFInfo
- Publication number
- JP4396523B2 JP4396523B2 JP2004566020A JP2004566020A JP4396523B2 JP 4396523 B2 JP4396523 B2 JP 4396523B2 JP 2004566020 A JP2004566020 A JP 2004566020A JP 2004566020 A JP2004566020 A JP 2004566020A JP 4396523 B2 JP4396523 B2 JP 4396523B2
- Authority
- JP
- Japan
- Prior art keywords
- detector
- data
- recording medium
- data layer
- optical recording
- 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 - Fee Related
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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
- G11B7/12—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
- G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
-
- 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
- G11B7/1353—Diffractive elements, e.g. holograms or gratings
-
- 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
- G11B7/12—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
- G11B7/1395—Beam splitters or combiners
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Description
2 コリメータレンズ
3、12 ビームスプリッタ
4、19 LC素子
5 4分の1波長板
6 対物レンズ
7 記録媒体
8 回転ドライブ
9 回転軸
10 焦点レンズ
11 円柱レンズ
13、15、17、18、20 検出器
16 回折レンズ
Claims (5)
- 上下に配置される少なくとも2つのデータ層を有する光記録媒体からの読出し及び/又は該光記録媒体への書込みに用いられ、該光記録媒体のデータ層からの読出し及び/又は該光記録媒体のデータ層への書込みのための入力ビームにより該光記録媒体に発生する収差を補正する装置を有し、
入力ビームと前記データ層から戻るビームとは、前記収差を補正する装置を通過する時、相互に実質的に垂直な偏光方向を有し、
前記収差を補正するための前記装置は、前記戻りビームが影響されることなくそれを通過するよう設定されており、
前記戻りビームは、少なくとも1つの検出器上へ結像され、
前記戻りビームにより発生する前記収差を補償するための補正手段が更なるビームパスに提供され、
前記補正手段は、前記戻りビームを2つ以上の部分ビームに分割する手段であり、個々の該部分ビームが、1つの前記検出器上に向けられ、
個々の前記検出器は1つのデータ層に割り当てられていることを特徴とする装置。 - 前記収差を補正するための装置は、前記収差のバランスを取るために1つの偏光方向にのみ波面を影響させる液晶素子から成り、4分の1波長板が、前記収差を補正するため、前記装置の下流であって入力ビームの方向に配置されることを特徴とする請求項1に記載の装置。
- 前記補正手段は、前記戻りビームにより通過される一つ以上のビームスプリッタであり、それぞれの該検出器は、前記光記録媒体から前記検出器までの光パスの長さが、各データ層に対して収差のない結像がそれぞれのデータ層に割り当てられたそれぞれの検出器上で得られるように、データ層のそれぞれについて最適化されるように構成されることを特徴とする請求項1又は2に記載の装置。
- 前記補正手段は、前記戻りビームにより通過される回折レンズであり、それぞれの該検出器は、前記光記録媒体から前記検出器までの前記光パスの長さが、各データ層に対して収差のない結像がそれぞれのデータ層に割り当てられたそれぞれの検出器上で得られるように、データ層のそれぞれについて最適化されるように構成されることを特徴とする請求項1又は2に記載の装置。
- 前記データ信号は、前記検出器の信号の和により得られ、焦点誤り信号及び/又はトラック誤り信号は、前記それぞれのデータ層について最適化された前記検出器の信号により得られ、前記光記録媒体から前記検出器までの光パスの長さがそれぞれのデータ層について最適化されていることを特徴とする請求項3又は4に記載の装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10300810A DE10300810A1 (de) | 2003-01-10 | 2003-01-10 | Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger |
PCT/EP2003/014735 WO2004064049A2 (en) | 2003-01-10 | 2003-12-22 | Apparatus for reading from and/or writing to optical recording media |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006513515A JP2006513515A (ja) | 2006-04-20 |
JP4396523B2 true JP4396523B2 (ja) | 2010-01-13 |
Family
ID=32519853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004566020A Expired - Fee Related JP4396523B2 (ja) | 2003-01-10 | 2003-12-22 | 光記録媒体からの読出し及び/又は光記録媒体への書込みのための装置 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7385905B2 (ja) |
EP (1) | EP1581940B1 (ja) |
JP (1) | JP4396523B2 (ja) |
KR (1) | KR101013763B1 (ja) |
CN (1) | CN100361211C (ja) |
AU (1) | AU2003296709A1 (ja) |
DE (2) | DE10300810A1 (ja) |
WO (1) | WO2004064049A2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1462206A1 (fr) * | 2003-03-26 | 2004-09-29 | Lasag Ag | dispositif laser pour percer des trous dans des composants d'un dispositif d'injection d'un fluide |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5621717A (en) * | 1995-06-07 | 1997-04-15 | International Business Machines Corporation | Reading optical disks having substrates with diverse axial thicknesses |
HU224675B1 (hu) * | 1995-08-30 | 2005-12-28 | Samsung Electronics Co. Ltd. | Memória diszk letapogató optikai eszköz |
US5907530A (en) * | 1995-08-30 | 1999-05-25 | Samsung Electronics Co., Ltd. | Optical pickup device |
US5798994A (en) * | 1996-01-16 | 1998-08-25 | Kamatani; Yasuo | Multi-layered optical disk reading method using liquid crystal diffraction device |
JPH10269611A (ja) | 1997-03-27 | 1998-10-09 | Pioneer Electron Corp | 光ピックアップ及びそれを用いた多層ディスク再生装置 |
US6151154A (en) * | 1998-03-12 | 2000-11-21 | Pioneer Electronic Corporation | Optical pickup, aberration correction unit and astigmatism measurement method |
EP0984440A3 (en) * | 1998-09-04 | 2000-05-24 | Matsushita Electric Industrial Co., Ltd. | Aberration detection device and optical information recording and reproducing apparatus |
JP3666632B2 (ja) * | 1998-12-11 | 2005-06-29 | パイオニア株式会社 | 収差補正装置及びこれを用いた光ピックアップ装置 |
US20020036958A1 (en) | 2000-07-24 | 2002-03-28 | Hidenori Wada | Optical element, optical head, optical recording/reproducing apparatus and optical recording/reproducing method |
JP4136273B2 (ja) * | 2000-05-24 | 2008-08-20 | パイオニア株式会社 | 収差補正ユニット、光ピックアップ装置及び記録再生装置 |
US7012875B2 (en) * | 2000-09-06 | 2006-03-14 | Hitachi, Ltd. | Optical disk apparatus using focal shift signals to control spherical aberration |
JP2002237076A (ja) * | 2001-02-06 | 2002-08-23 | Pioneer Electronic Corp | 収差補正装置 |
JP2003067966A (ja) * | 2001-06-13 | 2003-03-07 | Sony Corp | 光学ピックアップ装置 |
US7206277B2 (en) * | 2001-07-27 | 2007-04-17 | Pioneer Corporation | Optical pickup device and focal error detecting device therefor and wave aberration and focal error detecting device therefor |
-
2003
- 2003-01-10 DE DE10300810A patent/DE10300810A1/de not_active Withdrawn
- 2003-12-22 AU AU2003296709A patent/AU2003296709A1/en not_active Abandoned
- 2003-12-22 CN CNB2003801080380A patent/CN100361211C/zh not_active Expired - Fee Related
- 2003-12-22 DE DE60320853T patent/DE60320853D1/de not_active Expired - Lifetime
- 2003-12-22 KR KR1020057012615A patent/KR101013763B1/ko not_active IP Right Cessation
- 2003-12-22 US US10/541,761 patent/US7385905B2/en not_active Expired - Fee Related
- 2003-12-22 JP JP2004566020A patent/JP4396523B2/ja not_active Expired - Fee Related
- 2003-12-22 EP EP03815070A patent/EP1581940B1/en not_active Expired - Fee Related
- 2003-12-22 WO PCT/EP2003/014735 patent/WO2004064049A2/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP1581940B1 (en) | 2008-05-07 |
US20060256693A1 (en) | 2006-11-16 |
AU2003296709A1 (en) | 2004-08-10 |
EP1581940A2 (en) | 2005-10-05 |
AU2003296709A8 (en) | 2004-08-10 |
KR20050095840A (ko) | 2005-10-04 |
CN1735935A (zh) | 2006-02-15 |
CN100361211C (zh) | 2008-01-09 |
DE60320853D1 (de) | 2008-06-19 |
JP2006513515A (ja) | 2006-04-20 |
KR101013763B1 (ko) | 2011-02-14 |
WO2004064049A3 (en) | 2004-10-28 |
US7385905B2 (en) | 2008-06-10 |
WO2004064049A2 (en) | 2004-07-29 |
DE10300810A1 (de) | 2004-07-22 |
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