ATE537539T1 - Optische lesekopfvorrichtung - Google Patents

Optische lesekopfvorrichtung

Info

Publication number
ATE537539T1
ATE537539T1 AT09012717T AT09012717T ATE537539T1 AT E537539 T1 ATE537539 T1 AT E537539T1 AT 09012717 T AT09012717 T AT 09012717T AT 09012717 T AT09012717 T AT 09012717T AT E537539 T1 ATE537539 T1 AT E537539T1
Authority
AT
Austria
Prior art keywords
coma aberration
objective lens
variation
ambient temperature
lens
Prior art date
Application number
AT09012717T
Other languages
English (en)
Inventor
Noritaka Tanabe
Original Assignee
Funai Electric Co
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 Funai Electric Co filed Critical Funai Electric Co
Application granted granted Critical
Publication of ATE537539T1 publication Critical patent/ATE537539T1/de

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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective 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
    • 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
    • G11B7/13927—Means for controlling the beam wavefront, e.g. for correction of aberration active, e.g. controlled by electrical or mechanical means during transducing, e.g. to correct for variation of the spherical aberration due to disc tilt or irregularities in the cover layer thickness
    • 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
    • G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/0857—Arrangements for mechanically moving the whole head
    • G11B7/08582—Sled-type positioners
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
AT09012717T 2008-10-08 2009-10-07 Optische lesekopfvorrichtung ATE537539T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008261259A JP4803235B2 (ja) 2008-10-08 2008-10-08 光ピックアップ装置

Publications (1)

Publication Number Publication Date
ATE537539T1 true ATE537539T1 (de) 2011-12-15

Family

ID=41409228

Family Applications (1)

Application Number Title Priority Date Filing Date
AT09012717T ATE537539T1 (de) 2008-10-08 2009-10-07 Optische lesekopfvorrichtung

Country Status (4)

Country Link
US (1) US8300514B2 (de)
EP (1) EP2175448B1 (de)
JP (1) JP4803235B2 (de)
AT (1) ATE537539T1 (de)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07282453A (ja) 1994-04-08 1995-10-27 Sony Corp 光ディスク駆動装置
EP0800170B1 (de) * 1996-04-03 2006-03-22 Konica Corporation Optische Anordnung zum Beschreiben und/oder Lesen eines optischen Aufzeichnungsmediums
JP2002140831A (ja) 2000-11-02 2002-05-17 Sharp Corp 光ピックアップ装置
WO2002080157A1 (fr) 2001-03-30 2002-10-10 Sony Corporation Dispositif de reproduction optique et d'enregistrement sur disques optiques
JP2003287675A (ja) 2002-01-22 2003-10-10 Konica Corp 集光光学系、光ピックアップ装置、記録・再生装置、収差補正素子及び対物レンズ
JPWO2005074388A1 (ja) 2004-02-09 2007-09-13 コニカミノルタオプト株式会社 光ピックアップ装置及び光情報記録及び／又は再生装置
US7990819B2 (en) * 2004-04-22 2011-08-02 Panasonic Corporation Optical head apparatus and optical information apparatus
WO2006006381A1 (ja) * 2004-07-13 2006-01-19 Konica Minolta Opto, Inc. 光ピックアップ装置
CN101027722B (zh) * 2004-07-23 2011-08-10 松下电器产业株式会社 光盘设备
US20060028935A1 (en) * 2004-08-03 2006-02-09 Matsushita Electric Industrial Co., Ltd. Optical pickup device, optical disk apparatus, and light-receiving unit
JP4522829B2 (ja) * 2004-11-22 2010-08-11 株式会社リコー 光ピックアップ及び補正用収差発生方法とこれを用いた光情報処理装置
JP2007004854A (ja) 2005-06-22 2007-01-11 Hitachi Ltd 光ディスク装置
JP2007133967A (ja) 2005-11-10 2007-05-31 Canon Inc 光学式情報記録再生装置
JP4487972B2 (ja) 2006-04-26 2010-06-23 パナソニック株式会社 光ディスクドライブ装置
JP2008097661A (ja) 2006-10-06 2008-04-24 Sanyo Electric Co Ltd 光ピックアップ装置
US20100067356A1 (en) * 2006-12-20 2010-03-18 Hideyuki Fujii Optical element for optical pickup device, optical pickup device and method for assembling optical pickup device
JP4840167B2 (ja) 2007-01-31 2011-12-21 船井電機株式会社 光ディスク装置

Also Published As

Publication number Publication date
US20100085862A1 (en) 2010-04-08
JP2010092535A (ja) 2010-04-22
JP4803235B2 (ja) 2011-10-26
US8300514B2 (en) 2012-10-30
EP2175448A1 (de) 2010-04-14
EP2175448B1 (de) 2011-12-14

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