TW200634795A - Optical head with switchable diameter of the radiation spot on the radiation detector - Google Patents
Optical head with switchable diameter of the radiation spot on the radiation detectorInfo
- Publication number
- TW200634795A TW200634795A TW094139973A TW94139973A TW200634795A TW 200634795 A TW200634795 A TW 200634795A TW 094139973 A TW094139973 A TW 094139973A TW 94139973 A TW94139973 A TW 94139973A TW 200634795 A TW200634795 A TW 200634795A
- Authority
- TW
- Taiwan
- Prior art keywords
- radiation
- diameter
- scanning
- radiation spot
- dvd
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title abstract 5
- 230000005855 radiation Effects 0.000 title abstract 5
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 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
- G11B7/12—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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
- G02B26/005—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid based on electrowetting
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/12—Fluid-filled or evacuated lenses
- G02B3/14—Fluid-filled or evacuated lenses of variable focal length
-
- 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
- G11B7/135—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
- G11B7/1372—Lenses
-
- 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
- G11B7/1372—Lenses
- G11B7/1378—Separate aberration correction lenses; Cylindrical lenses to generate astigmatism; Beam expanders
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optical Head (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04105799 | 2004-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200634795A true TW200634795A (en) | 2006-10-01 |
Family
ID=35709244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW094139973A TW200634795A (en) | 2004-11-16 | 2005-11-14 | Optical head with switchable diameter of the radiation spot on the radiation detector |
Country Status (9)
Country | Link |
---|---|
US (1) | US7706234B2 (zh) |
EP (1) | EP1815468B1 (zh) |
JP (1) | JP2008521151A (zh) |
KR (1) | KR20070086103A (zh) |
CN (1) | CN101061539B (zh) |
AT (1) | ATE398827T1 (zh) |
DE (1) | DE602005007627D1 (zh) |
TW (1) | TW200634795A (zh) |
WO (1) | WO2006054215A1 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7436587B2 (en) * | 2006-03-23 | 2008-10-14 | Mitutoyo Corporation | Variable focal length constant magnification lens assembly |
JP2009176391A (ja) * | 2008-01-28 | 2009-08-06 | Sony Corp | 光ピックアップ及び光ディスク装置 |
JP5225005B2 (ja) * | 2008-02-08 | 2013-07-03 | 三菱電機株式会社 | 光ピックアップ装置及び光ディスク装置 |
KR101289071B1 (ko) | 2011-05-06 | 2013-07-22 | 도시바삼성스토리지테크놀러지코리아 주식회사 | 광픽업 및 이를 적용한 광정보저장매체 시스템 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3160163B2 (ja) | 1994-10-24 | 2001-04-23 | シャープ株式会社 | 光ピックアップの光スポット径調整方法および光ピックアップの受光素子並びに光ピックアップ |
JPH09167364A (ja) | 1995-12-14 | 1997-06-24 | Sharp Corp | 光ピックアップ装置 |
US5841735A (en) * | 1996-07-09 | 1998-11-24 | The United States Of America As Represented By The Secretary Of The Navy | Method and system for processing acoustic signals |
JPH1092000A (ja) * | 1996-09-13 | 1998-04-10 | Nec Corp | 光ヘッド装置 |
JPH10177738A (ja) * | 1996-12-17 | 1998-06-30 | Sankyo Seiki Mfg Co Ltd | 光ピックアップ装置 |
US6208609B1 (en) * | 1998-11-12 | 2001-03-27 | New Dimension Research & Instrument, Inc. | Optical system with interactive data capability |
KR100369467B1 (ko) * | 1998-11-17 | 2003-04-03 | 삼성전자 주식회사 | 광픽업장치 |
JP2000221388A (ja) * | 1999-01-29 | 2000-08-11 | Fuji Photo Optical Co Ltd | 光束径可変型対物レンズおよびこれを用いた光学装置 |
KR100575633B1 (ko) | 1999-12-31 | 2006-05-03 | 엘지전자 주식회사 | 이종 광디스크 겸용 광픽업 조정방법과 그에 적합한광픽업 장치 |
KR100438701B1 (ko) * | 2001-09-17 | 2004-07-05 | 삼성전자주식회사 | 호환형 광픽업 및 그 광축을 맞추기 위한 조정방법 |
CN1299280C (zh) | 2002-01-17 | 2007-02-07 | 皇家飞利浦电子股份有限公司 | 光学扫描装置 |
US20030147331A1 (en) * | 2002-02-07 | 2003-08-07 | G-Bond Optoelectronics, Inc. | Optical pickup diffracting one of two laser beams to a single detector |
US7126903B2 (en) | 2002-02-14 | 2006-10-24 | Koninklijke Philips Electronics N. V. | Variable focus lens |
KR20030095437A (ko) * | 2002-06-10 | 2003-12-24 | 삼성전자주식회사 | 반복 기록 특성을 향상시킬 수 있는 기록 장치 및 방법 |
KR100480615B1 (ko) * | 2002-09-06 | 2005-03-31 | 삼성전자주식회사 | 2파장 광원 모듈을 채용한 광픽업 |
EP1543513A1 (en) * | 2002-09-19 | 2005-06-22 | Koninklijke Philips Electronics N.V. | Optical scanning device |
CN100342258C (zh) | 2002-10-25 | 2007-10-10 | 皇家飞利浦电子股份有限公司 | 变焦透镜 |
AU2003280157A1 (en) | 2002-12-04 | 2004-06-23 | Koninklijke Philips Electronics N.V. | Objective lens and scanning device using such an objective lens |
JP2004206743A (ja) * | 2002-12-24 | 2004-07-22 | Ricoh Co Ltd | 光ピックアップ装置及び光ディスク装置 |
-
2005
- 2005-11-11 EP EP05802340A patent/EP1815468B1/en not_active Not-in-force
- 2005-11-11 WO PCT/IB2005/053718 patent/WO2006054215A1/en active IP Right Grant
- 2005-11-11 US US11/718,921 patent/US7706234B2/en not_active Expired - Fee Related
- 2005-11-11 DE DE602005007627T patent/DE602005007627D1/de active Active
- 2005-11-11 JP JP2007540810A patent/JP2008521151A/ja active Pending
- 2005-11-11 AT AT05802340T patent/ATE398827T1/de not_active IP Right Cessation
- 2005-11-11 CN CN2005800392308A patent/CN101061539B/zh not_active Expired - Fee Related
- 2005-11-11 KR KR1020077013260A patent/KR20070086103A/ko not_active Application Discontinuation
- 2005-11-14 TW TW094139973A patent/TW200634795A/zh unknown
Also Published As
Publication number | Publication date |
---|---|
WO2006054215A1 (en) | 2006-05-26 |
US20080205241A1 (en) | 2008-08-28 |
CN101061539B (zh) | 2010-09-29 |
KR20070086103A (ko) | 2007-08-27 |
EP1815468A1 (en) | 2007-08-08 |
CN101061539A (zh) | 2007-10-24 |
US7706234B2 (en) | 2010-04-27 |
JP2008521151A (ja) | 2008-06-19 |
DE602005007627D1 (de) | 2008-07-31 |
ATE398827T1 (de) | 2008-07-15 |
EP1815468B1 (en) | 2008-06-18 |
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