ATE295986T1 - Optische kopfanordnung - Google Patents

Optische kopfanordnung

Info

Publication number
ATE295986T1
ATE295986T1 AT01302574T AT01302574T ATE295986T1 AT E295986 T1 ATE295986 T1 AT E295986T1 AT 01302574 T AT01302574 T AT 01302574T AT 01302574 T AT01302574 T AT 01302574T AT E295986 T1 ATE295986 T1 AT E295986T1
Authority
AT
Austria
Prior art keywords
height
foreign material
sil
magnetic field
information reading
Prior art date
Application number
AT01302574T
Other languages
English (en)
Inventor
Osamu Kasono
Yoshiaki Kojima
Yasumitsu Wada
Original Assignee
Pioneer Corp
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 Pioneer Corp filed Critical Pioneer Corp
Application granted granted Critical
Publication of ATE295986T1 publication Critical patent/ATE295986T1/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
    • G11B7/1387—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector using the near-field effect
    • 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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0927—Electromechanical actuators for lens positioning for focusing only
    • 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
    • G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
    • 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
    • G11B7/122—Flying-type heads, e.g. analogous to Winchester type in magnetic recording

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
AT01302574T 2000-03-24 2001-03-20 Optische kopfanordnung ATE295986T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000083500A JP3919149B2 (ja) 2000-03-24 2000-03-24 光ヘッド装置

Publications (1)

Publication Number Publication Date
ATE295986T1 true ATE295986T1 (de) 2005-06-15

Family

ID=18600125

Family Applications (1)

Application Number Title Priority Date Filing Date
AT01302574T ATE295986T1 (de) 2000-03-24 2001-03-20 Optische kopfanordnung

Country Status (5)

Country Link
US (1) US6996043B2 (de)
EP (1) EP1136989B1 (de)
JP (1) JP3919149B2 (de)
AT (1) ATE295986T1 (de)
DE (1) DE60110858T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003223704A (ja) * 2002-01-25 2003-08-08 Fujitsu Ltd 磁気ヘッドおよびデータ記録再生装置
CN101263556A (zh) * 2005-09-12 2008-09-10 皇家飞利浦电子股份有限公司 检查折射元件清洁状态的方法及近场型光学扫描装置
WO2009027918A1 (en) * 2007-08-30 2009-03-05 Koninklijke Philips Electronics N.V. Near field optical recording device and method of operating a near field optical recording device
WO2009027924A1 (en) * 2007-08-30 2009-03-05 Koninklijke Philips Electronics N.V. Method of operating a near field optical recording device and near field optical recording device
NL2006458A (en) 2010-05-05 2011-11-08 Asml Netherlands Bv Lithographic apparatus and device manufacturing method.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH535430A (de) * 1971-02-17 1973-03-31 Gretag Ag Verfahren und Vorrichtung zur Detektierung von staubförmigen Partikeln
US4402607A (en) * 1980-05-16 1983-09-06 Gca Corporation Automatic detector for microscopic dust on large-area, optically unpolished surfaces
JPH05234117A (ja) * 1991-12-24 1993-09-10 Internatl Business Mach Corp <Ibm> 光ヘッド装置及び光ディスク記憶システム
US5436464A (en) * 1992-04-13 1995-07-25 Nikon Corporation Foreign particle inspecting method and apparatus with correction for pellicle transmittance
US6178157B1 (en) * 1996-04-15 2001-01-23 Digital Papyrus Corporation Flying head with adjustable actuator load
US6166808A (en) * 1996-12-24 2000-12-26 U.S. Philips Corporation Optical height meter, surface-inspection device provided with such a height meter, and lithographic apparatus provided with the inspection device
US6130418A (en) * 1997-10-06 2000-10-10 U.S. Philips Corporation Optical scanning unit having a main lens and an auxiliary lens
JP3611955B2 (ja) * 1997-10-15 2005-01-19 パイオニア株式会社 光ディスク原盤の製造方法

Also Published As

Publication number Publication date
EP1136989B1 (de) 2005-05-18
US20010024422A1 (en) 2001-09-27
US6996043B2 (en) 2006-02-07
EP1136989A2 (de) 2001-09-26
JP3919149B2 (ja) 2007-05-23
DE60110858T2 (de) 2006-05-04
EP1136989A3 (de) 2003-01-08
DE60110858D1 (de) 2005-06-23
JP2001266343A (ja) 2001-09-28

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties