AU2003263538A1 - Optical scanning device with two three-spot gratings - Google Patents

Optical scanning device with two three-spot gratings

Info

Publication number
AU2003263538A1
AU2003263538A1 AU2003263538A AU2003263538A AU2003263538A1 AU 2003263538 A1 AU2003263538 A1 AU 2003263538A1 AU 2003263538 A AU2003263538 A AU 2003263538A AU 2003263538 A AU2003263538 A AU 2003263538A AU 2003263538 A1 AU2003263538 A1 AU 2003263538A1
Authority
AU
Australia
Prior art keywords
scanning device
optical scanning
gratings
spot
spot gratings
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.)
Abandoned
Application number
AU2003263538A
Inventor
Petrus T. Jutte
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
Publication of AU2003263538A1 publication Critical patent/AU2003263538A1/en
Abandoned 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
    • G11B7/125—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
    • G11B7/08—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
    • G11B7/0903—Multi-beam tracking systems
    • 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
    • G11B7/1381—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
    • 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)
AU2003263538A 2002-10-02 2003-09-30 Optical scanning device with two three-spot gratings Abandoned AU2003263538A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02079098 2002-10-02
EP02079098.6 2002-10-02
PCT/IB2003/004299 WO2004032126A1 (en) 2002-10-02 2003-09-30 Optical scanning device with two three-spot gratings

Publications (1)

Publication Number Publication Date
AU2003263538A1 true AU2003263538A1 (en) 2004-04-23

Family

ID=32050050

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003263538A Abandoned AU2003263538A1 (en) 2002-10-02 2003-09-30 Optical scanning device with two three-spot gratings

Country Status (3)

Country Link
AU (1) AU2003263538A1 (en)
TW (1) TW200415607A (en)
WO (1) WO2004032126A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7548359B2 (en) 2002-11-13 2009-06-16 Asahi Glass Company, Limited Double-wavelength light source unit and optical head device having four diffraction gratings
WO2004044905A1 (en) * 2002-11-13 2004-05-27 Asahi Glass Company, Limited Double-wavelength light source unit and optical head device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000123403A (en) * 1998-10-19 2000-04-28 Victor Co Of Japan Ltd Optical pickup and optical device
KR20000066666A (en) * 1999-04-20 2000-11-15 윤종용 Optical system of DVD-ROM capable of play DVD-RAM
JP2001256670A (en) * 2000-03-10 2001-09-21 Sony Corp Optical pickup device and optical disk device
KR100341335B1 (en) * 2000-05-18 2002-06-22 윤종용 Optical disc player and a method for recording information on a disc of the optical disc player or a method for playing the optical disc player
JP2002063732A (en) * 2000-08-22 2002-02-28 Pioneer Electronic Corp Optical pickup device
KR100809974B1 (en) * 2000-09-25 2008-03-06 코닌클리케 필립스 일렉트로닉스 엔.브이. Optical scanning device
JP4345256B2 (en) * 2001-02-14 2009-10-14 旭硝子株式会社 Wavelength selective diffraction element and optical head device
JP2003006891A (en) * 2001-06-21 2003-01-10 Sankyo Seiki Mfg Co Ltd Optical pickup
US6822771B2 (en) * 2001-09-28 2004-11-23 Ricoh Company, Ltd. Optical pickup unit and optical disk drive for accurate and stable information recording and reproduction
JP2003162831A (en) * 2001-11-27 2003-06-06 Sharp Corp Optical pickup
JP2003196860A (en) * 2001-12-27 2003-07-11 Ricoh Co Ltd Optical pickup device and optical disk device
KR100472443B1 (en) * 2002-03-19 2005-02-21 삼성전자주식회사 Optical pick-up apparatus

Also Published As

Publication number Publication date
WO2004032126A1 (en) 2004-04-15
TW200415607A (en) 2004-08-16

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase