ATE452404T1 - Optischer kopf - Google Patents

Optischer kopf

Info

Publication number
ATE452404T1
ATE452404T1 AT00956819T AT00956819T ATE452404T1 AT E452404 T1 ATE452404 T1 AT E452404T1 AT 00956819 T AT00956819 T AT 00956819T AT 00956819 T AT00956819 T AT 00956819T AT E452404 T1 ATE452404 T1 AT E452404T1
Authority
AT
Austria
Prior art keywords
correcting element
phase correcting
optical head
head device
power supply
Prior art date
Application number
AT00956819T
Other languages
English (en)
Inventor
Takuji Nomura
Koichi Murata
Original Assignee
Asahi Glass Co Ltd
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
Priority claimed from JP2000196926A external-priority patent/JP4915028B2/ja
Priority claimed from JP2000245457A external-priority patent/JP5005850B2/ja
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Application granted granted Critical
Publication of ATE452404T1 publication Critical patent/ATE452404T1/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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • 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
    • 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
    • G11B7/1392—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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/18—Function characteristic adaptive optics, e.g. wavefront correction
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
AT00956819T 1999-09-02 2000-08-30 Optischer kopf ATE452404T1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP24928599 1999-09-02
JP2000196926A JP4915028B2 (ja) 1999-09-02 2000-06-29 光ヘッド装置
JP2000245457A JP5005850B2 (ja) 2000-08-14 2000-08-14 光ヘッド装置
PCT/JP2000/005889 WO2001018801A1 (fr) 1999-09-02 2000-08-30 Tete optique

Publications (1)

Publication Number Publication Date
ATE452404T1 true ATE452404T1 (de) 2010-01-15

Family

ID=27333813

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00956819T ATE452404T1 (de) 1999-09-02 2000-08-30 Optischer kopf

Country Status (6)

Country Link
US (1) US7054253B1 (de)
EP (1) EP1136993B1 (de)
KR (1) KR100740481B1 (de)
AT (1) ATE452404T1 (de)
DE (1) DE60043531D1 (de)
WO (1) WO2001018801A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6690500B2 (en) * 2000-06-30 2004-02-10 Pioneer Corporation Aberration correction apparatus and method
JP2005522669A (ja) 2001-08-20 2005-07-28 バイオサイト インコーポレイテッド 卒中および脳損傷の診断マーカーおよびその使用方法
JP3844460B2 (ja) * 2002-08-05 2006-11-15 パイオニア株式会社 空間光変調器
WO2004042715A1 (ja) * 2002-11-08 2004-05-21 Citizen Watch Co., Ltd. 液晶光学素子及び光学装置
EP1602964A4 (de) * 2003-03-07 2008-08-13 Asahi Glass Co Ltd Optisches dämpfungsglied und optische kopfeinrichtung
JP2005071424A (ja) * 2003-08-28 2005-03-17 Pioneer Electronic Corp 収差補正装置および光学式記録媒体再生装置
US7406007B2 (en) * 2003-09-02 2008-07-29 Matsushita Electric Industrial Co., Ltd. Optical disc apparatus and spherical aberration correction controlling apparatus
JP2005122828A (ja) * 2003-10-16 2005-05-12 Pioneer Electronic Corp 光ピックアップ装置および光学記録媒体再生装置
JP4300138B2 (ja) * 2004-03-09 2009-07-22 パイオニア株式会社 収差補正装置、並びに光ピックアップの制御装置、制御方法及び制御プログラム
JP2006031771A (ja) * 2004-07-13 2006-02-02 Pioneer Electronic Corp 収差補正素子、光ピックアップ及び情報機器
JP4215011B2 (ja) * 2004-09-27 2009-01-28 ソニー株式会社 光ピックアップ及びこれを用いた光ディスク装置
CN101133449B (zh) 2005-03-03 2010-08-11 西铁城控股株式会社 液晶光学元件
JP4609301B2 (ja) * 2005-12-14 2011-01-12 船井電機株式会社 光ピックアップ装置
JP5452542B2 (ja) * 2011-04-21 2014-03-26 株式会社日立メディアエレクトロニクス 光ピックアップ装置および光ディスク装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127322A (en) * 1975-12-05 1978-11-28 Hughes Aircraft Company High brightness full color image light valve projection system
JP2628630B2 (ja) 1986-01-24 1997-07-09 オリンパス光学工業株式会社 液晶ミラーレンズ
US5084777A (en) * 1989-11-14 1992-01-28 Greyhawk Systems, Inc. Light addressed liquid crystal light valve incorporating electrically insulating light blocking material of a-SiGe:H
JP3241781B2 (ja) * 1991-08-22 2001-12-25 松下電器産業株式会社 光ヘッド装置および光情報記録装置、光情報再生装置
JPH0874033A (ja) 1994-09-02 1996-03-19 Asahi Glass Co Ltd 液晶表示用電極
US5594565A (en) 1994-12-02 1997-01-14 General Electric Company Programmable liquid crystal wavefront device
US5905558A (en) * 1995-08-29 1999-05-18 Canon Kabushiki Kaisha Circuit plate, process for producing same and liquid crystal device including same
JP3443226B2 (ja) 1995-08-31 2003-09-02 パイオニア株式会社 光ピックアップ
JP3799756B2 (ja) 1996-07-23 2006-07-19 旭硝子株式会社 光ヘッド装置
JP3504082B2 (ja) 1996-09-03 2004-03-08 パイオニア株式会社 収差補正光学装置及び記録媒体再生装置
JP3814366B2 (ja) * 1997-02-07 2006-08-30 シチズン時計株式会社 液晶波面変調装置及びその駆動方法
JPH10334491A (ja) 1997-05-27 1998-12-18 Pioneer Electron Corp 液晶駆動信号生成装置及び液晶駆動信号生成装置を備えた光ディスク再生（記録）装置
JP3488056B2 (ja) * 1997-10-03 2004-01-19 パイオニア株式会社 収差補正装置及び情報再生装置
US6480454B1 (en) * 1998-12-15 2002-11-12 Matsushita Electric Industrial Co., Ltd. Optical element, optical head using the optical element, and optical recording and reproducing apparatus using the optical element
US20020036958A1 (en) * 2000-07-24 2002-03-28 Hidenori Wada Optical element, optical head, optical recording/reproducing apparatus and optical recording/reproducing method
JP2002237076A (ja) * 2001-02-06 2002-08-23 Pioneer Electronic Corp 収差補正装置

Also Published As

Publication number Publication date
KR100740481B1 (ko) 2007-07-19
WO2001018801A1 (fr) 2001-03-15
EP1136993A1 (de) 2001-09-26
EP1136993B1 (de) 2009-12-16
DE60043531D1 (de) 2010-01-28
US7054253B1 (en) 2006-05-30
EP1136993A4 (de) 2002-08-07
KR20010099774A (ko) 2001-11-09

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