DE60212955D1 - Optisches abtastgerät - Google Patents

Optisches abtastgerät

Info

Publication number
DE60212955D1
DE60212955D1 DE60212955T DE60212955T DE60212955D1 DE 60212955 D1 DE60212955 D1 DE 60212955D1 DE 60212955 T DE60212955 T DE 60212955T DE 60212955 T DE60212955 T DE 60212955T DE 60212955 D1 DE60212955 D1 DE 60212955D1
Authority
DE
Germany
Prior art keywords
disk
proportion
intensity
polarisation
beam splitter
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
Application number
DE60212955T
Other languages
English (en)
Other versions
DE60212955T2 (de
Inventor
T Jutte
Peter Coops
J Vrehen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Application granted granted Critical
Publication of DE60212955D1 publication Critical patent/DE60212955D1/de
Publication of DE60212955T2 publication Critical patent/DE60212955T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • G11B7/1395—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
    • 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
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1263—Power control during transducing, e.g. by monitoring
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Microscoopes, Condenser (AREA)
  • Holo Graphy (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
DE60212955T 2001-04-17 2002-04-11 Optisches abtastgerät Expired - Lifetime DE60212955T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01201392 2001-04-17
EP01201392 2001-04-17
PCT/IB2002/001309 WO2002089126A1 (en) 2001-04-17 2002-04-11 Optical scanning device

Publications (2)

Publication Number Publication Date
DE60212955D1 true DE60212955D1 (de) 2006-08-17
DE60212955T2 DE60212955T2 (de) 2007-02-15

Family

ID=8180160

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60212955T Expired - Lifetime DE60212955T2 (de) 2001-04-17 2002-04-11 Optisches abtastgerät

Country Status (7)

Country Link
US (1) US6650613B2 (de)
EP (1) EP1382037B1 (de)
JP (1) JP4330882B2 (de)
KR (1) KR100893722B1 (de)
AT (1) ATE332561T1 (de)
DE (1) DE60212955T2 (de)
WO (1) WO2002089126A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040030950A (ko) * 2001-08-10 2004-04-09 코닌클리케 필립스 일렉트로닉스 엔.브이. 광학주사장치
US8750702B1 (en) * 2002-06-21 2014-06-10 Rockstar Consortium Us Lp Passive optical loopback
AU2003302966A1 (en) 2002-12-16 2004-07-09 Koninklijke Philips Electronics N.V. Apparatus having an optical head for reading and/or writing data stored in an optical carrier and method involved in this apparatus
US20110051587A1 (en) * 2009-08-25 2011-03-03 Jinn-Kang Wang Structure For Optical Pickup Head
KR200453697Y1 (ko) * 2011-01-16 2011-05-19 이영조 열수축튜브로 코팅한 낚시찌

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4965780A (en) * 1987-08-12 1990-10-23 Digital Equipment Corporation Magneto-optical data recording device using a wavelength and polarization-sensitive splitter
JPH0287337A (ja) * 1988-09-22 1990-03-28 Canon Inc 光ヘッド
US5544144A (en) * 1990-11-14 1996-08-06 Asahi Kogaku Kogyo Kabushiki Kaisha Optical head structure having compactly arranged parts
JP3239962B2 (ja) * 1992-09-10 2001-12-17 キヤノン株式会社 光学的情報記録再生装置
US5513164A (en) * 1992-09-11 1996-04-30 Kabushiki Kaisha Toshiba Optical recording and reproducing apparatus
JPH06176426A (ja) * 1992-12-08 1994-06-24 Sony Corp 光学ピックアップ装置
JPH09147407A (ja) * 1995-11-22 1997-06-06 Matsushita Electric Ind Co Ltd 光ヘッド
KR100219666B1 (ko) * 1996-07-15 1999-09-01 윤종용 광자기 기록/재생 장치
US6275461B1 (en) * 1996-08-29 2001-08-14 Samsung Electronic Co., Ltd. Optical pickup using an optical phase plate
JPH10312575A (ja) * 1997-05-09 1998-11-24 Pioneer Electron Corp 光ピックアップ装置
JPH1186317A (ja) * 1997-09-12 1999-03-30 Toshiba Corp 光ピックアップ装置
EP0911818A1 (de) * 1997-10-27 1999-04-28 Deutsche Thomson-Brandt Gmbh Kompakter optischer Abtastkopf mit zweifacher Wellenlänge
US6240053B1 (en) * 1998-05-07 2001-05-29 Ricoh Company, Ltd. Optical pickup device
JP3382846B2 (ja) * 1998-05-11 2003-03-04 日本電気株式会社 光ヘッド及び光ヘッドに於ける光源出力のモニター方法
JPH11345427A (ja) * 1998-06-01 1999-12-14 Hitachi Ltd 光ヘッドおよびそれを用いた光学的情報記録再生装置
KR100604788B1 (ko) * 1998-10-23 2006-07-26 삼성전자주식회사 호환형 광픽업장치
TW479253B (en) * 1998-12-17 2002-03-11 Konishiroku Photo Ind Objective lens for correcting chromatic aberration for use in recording toor reproducing from optical information recording medium and optical pickup apparatus therewith
JP2001035030A (ja) * 1999-07-22 2001-02-09 Hitachi Ltd 光学的情報記録再生装置及び光ヘッド並びに光学的記録媒体

Also Published As

Publication number Publication date
WO2002089126A1 (en) 2002-11-07
ATE332561T1 (de) 2006-07-15
DE60212955T2 (de) 2007-02-15
EP1382037B1 (de) 2006-07-05
JP4330882B2 (ja) 2009-09-16
KR100893722B1 (ko) 2009-04-17
EP1382037A1 (de) 2004-01-21
JP2004520676A (ja) 2004-07-08
US20030039197A1 (en) 2003-02-27
KR20030095186A (ko) 2003-12-18
US6650613B2 (en) 2003-11-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition