CN1981332A - 拾光器 - Google Patents

拾光器 Download PDF

Info

Publication number
CN1981332A
CN1981332A CNA2005800225409A CN200580022540A CN1981332A CN 1981332 A CN1981332 A CN 1981332A CN A2005800225409 A CNA2005800225409 A CN A2005800225409A CN 200580022540 A CN200580022540 A CN 200580022540A CN 1981332 A CN1981332 A CN 1981332A
Authority
CN
China
Prior art keywords
sub
beamlet
fact
light
optical element
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.)
Pending
Application number
CNA2005800225409A
Other languages
English (en)
Chinese (zh)
Inventor
小野将之
西本雅彦
中森达哉
中西直树
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of CN1981332A publication Critical patent/CN1981332A/zh
Pending legal-status Critical Current

Links

Images

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
    • G11B7/08—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
    • 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
    • G11B7/08—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
    • G11B7/0941—Methods and circuits for servo gain or phase compensation during operation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
CNA2005800225409A 2005-02-15 2005-09-21 拾光器 Pending CN1981332A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP037010/2005 2005-02-15
JP2005037010A JP2006228260A (ja) 2005-02-15 2005-02-15 光ピックアップ

Publications (1)

Publication Number Publication Date
CN1981332A true CN1981332A (zh) 2007-06-13

Family

ID=36916257

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2005800225409A Pending CN1981332A (zh) 2005-02-15 2005-09-21 拾光器

Country Status (7)

Country Link
US (1) US20080074966A1 (enExample)
EP (1) EP1860653A1 (enExample)
JP (1) JP2006228260A (enExample)
KR (1) KR20070104208A (enExample)
CN (1) CN1981332A (enExample)
TW (1) TW200629259A (enExample)
WO (1) WO2006087843A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102446517A (zh) * 2010-09-30 2012-05-09 三洋电机株式会社 光拾波器装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4106072B1 (ja) * 2006-12-18 2008-06-25 松下電器産業株式会社 光ピックアップ装置
EP2141699A1 (en) * 2008-06-30 2010-01-06 Deutsche Thomson OHG Apparatus for reading from an optical recording medium
US8630154B2 (en) * 2010-05-11 2014-01-14 Thomson Licensing, LLC Apparatus comprising a pickup providing multiple beams

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63138625U (enExample) * 1987-03-04 1988-09-13
JPH07320287A (ja) * 1994-05-24 1995-12-08 Olympus Optical Co Ltd 光ピックアップ装置
JPH11296879A (ja) * 1998-04-02 1999-10-29 Sony Corp 光ディスク装置とその制御方法
JP3527705B2 (ja) * 1999-12-28 2004-05-17 シャープ株式会社 光ピックアップ及びトラッキングサーボ方法
JP2003162831A (ja) * 2001-11-27 2003-06-06 Sharp Corp 光ピックアップ装置
JP3826082B2 (ja) * 2002-08-23 2006-09-27 シャープ株式会社 光ピックアップ装置
JP2004253111A (ja) * 2003-01-31 2004-09-09 Sharp Corp 光ピックアップ装置
JP2004355790A (ja) * 2003-05-08 2004-12-16 Sharp Corp ホログラム結合体およびその製造方法、ホログラムレーザユニットならびに光ピックアップ装置
JP3779705B2 (ja) * 2003-08-13 2006-05-31 Ｔｄｋ株式会社 光ヘッド、ｌｄモジュール、光記録再生装置及び光記録再生装置に用いる回折素子
JP2005182938A (ja) * 2003-12-22 2005-07-07 Matsushita Electric Ind Co Ltd 光ピックアップ装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102446517A (zh) * 2010-09-30 2012-05-09 三洋电机株式会社 光拾波器装置

Also Published As

Publication number Publication date
US20080074966A1 (en) 2008-03-27
WO2006087843A1 (ja) 2006-08-24
EP1860653A1 (en) 2007-11-28
KR20070104208A (ko) 2007-10-25
JP2006228260A (ja) 2006-08-31
TW200629259A (en) 2006-08-16

Similar Documents

Publication Publication Date Title
CN101471100B (zh) 光拾取器装置和光盘装置
CN100568355C (zh) 拾光器
JP3527705B2 (ja) 光ピックアップ及びトラッキングサーボ方法
US7751297B2 (en) Optical pickup device
TW200834568A (en) Optical pickup device
CN100416673C (zh) 光学拾取头
US20090190457A1 (en) Optical head device and optical information reproducing device
JP3974079B2 (ja) 光ピックアップ
CN1981332A (zh) 拾光器
CN101083095A (zh) 光拾取装置
KR100723116B1 (ko) 광 헤드의 초점 어긋남 오차 신호 검출 방법 및 그것을이용한 광 기록 재생 장치
JP4396596B2 (ja) 光ピックアップ
JP2012113767A (ja) 光ピックアップ装置およびこれを備えた光情報記録再生装置
KR20070020726A (ko) 기록층의 두께 변화에 따른 구면 수차를 탐지하고 보상하는광픽업 장치
JP2006268974A (ja) 光半導体装置
JP2010267349A (ja) 光ヘッド装置、ホログラム素子、光集積素子、光情報処理装置および信号検出方法
TW200828290A (en) Optical pickup device
KR20070016969A (ko) 광 픽업
JP2006120242A (ja) 光ヘッドの誤差信号検出方法及びそれを用いた光ヘッド並びにそれを用いた光記録再生装置
JP2007122792A (ja) 回折格子、光ピックアップ装置
JP2012133852A (ja) 光ピックアップ
JP2012119047A (ja) 光ピックアップおよび当該光ピックアップを備える光ディスク装置

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication